Category Archives: Galvanized Steel

Galvanized Crash Barriers

Ensuring Road Safety with Galvanized Crash Barriers!

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As individuals, we need to ensure that road safety measures are taken with high priority so that there is no loss to the lives of any people. One of the initiatives considered for road safety is having galvanized crash barriers that remain rust-free. The most common crash barriers on busy roads are metal beam crash barriers or guardrails. The design of these barriers is in such a form that provides accurate protection to vehicle occupants during traffic accidents. However, these metal beams undergo a proper galvanisation process before getting installed at the site. It is extremely affordable and comes with a top-notch hot-dip zinc coating.

Using the proper approach of galvanization, the barriers will remain rust-free, l will have considerably long durability, and it will look like a brand new deployment for an extended period. Since these crash barriers are integral to road safety measures, we adhere to the following standards and guidelines when processing work for the road crash barrier galvanization.

It is always noticed that roadside accidents occur only when there is ignorance and a casual approach while driving vehicles. The moment leads to life-threatening events, and people may face the consequences. Thus, sign boards must be installed on the roadsides to avoid such events and be more careful. With a need for crash barriers, another thing that is taken into consideration is proper calculations that determine the appropriate requirements, such as the size, length, speed, and volume of the traffic. The perfect place for installing barriers is at bridge ends, crossroads, deep slopes, poles, or areas that may pose a danger.

Different Types of Crash Barriers

There are multiple types of crash barriers which are used. The demand for galvanized barriers depends on the core requirements. Once we know which kind of crash barrier is required, we proceed with galvanization work by providing galvanized steels. The list of the kinds of barriers are listed below,

– Road Signage and Markings

– Synergy with Road Lighting

– Traffic Calming Measures

– Emergency and Breakdown Lanes

Are you Looking for Reliable Galvanization Service Providers for Crash Barriers?

We are the leading and renowned name in the industry, providing all significant galvanisation types of work. When it comes to road safety measures, proper galvanization is required. Hence, you can contact us, and we assure you that with correct adherence to the standards and process, we will provide accurate Galvanization services.

Galvanized Steel

Galvanized Steel: The Ultimate Guide to Understanding its Properties and Applications

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Introduction

The undertaking of the galvanizing method is increasing day by day, as they proved it to be an effective method for steel corrosion protection. It is essential not because zinc can form a dense protective layer on the steel surface but also because zinc has the capacity for a cathodic protection effect. Therefore, if, at any moment, the layer of galvanized steel is damaged, it can still help prevent and protect the base of the iron with the help of cathodic protection material corrosion.

The undertaking of Galvanizing refers to a technology used for surface treatment of coating the layer of zinc at the base of the metal, alloys, or other materials. The entire process plays an essential role in aesthetics and rust prevention.

Zinc can form a film with good corrosion resistance at the surface of the steel and corrosive environment. It is the process that will help protect the complete layer of zinc along with the steel matrix. The entire process will help create a protective base and property which is nontoxic and inexpensive.

Application Areas of Galvanized Steel

The galvanized steel sheet is prepared with a hot dip galvanized or electro-galvanized layer on the surface. These sheets are now widely used in construction, vehicle, ship, container manufacturing, and electromechanical industries.

Many of these galvanized sheets are used to manufacture automobiles, refrigerated containers, construction sections, HVAC facilities, and furniture.

The application of galvanization is the primary technology for the anti-corrosion of the steel process and its products. The material used is hot-dip and electroplating zinc. So it is because it creates a standard procedure with the help of a zinc, which is low in count, but the layer on the iron substrate is an anode coating with a general corrosive source and medium.

Galvanized Steel: Properties

While working on galvanized steel, there are multiple levels of properties that need to be taken into consideration. These are the base for the overall Galvanized Steel. Having said this, let us briefly discuss some of them with you.

Corrosion resistance

The covering of the surface of the steel is with a zinc layer. It has a certain level of thickness and a dense structure that prevents the blocking and contacting of corrosive solution and steel. Therefore it is the process of controlling the steel from being damaged and corrupted by the answer.

The formation of the zinc layer is thin and has dense and insoluble zinc oxide that is created on the surface of the air. Therefore, the process will help prevent the steel substrate from getting rust and damaged while in contact with the air. In addition, if the zinc oxide reacts with other components in the air, it forms an insoluble zinc salt that is better anti-corrosion for long-term effects and benefits. Therefore, the iron zinc alloy is the safety coat with an anti-corrosion long-term impact when considered for steel.

Abrasion resistance

The zinc-iron has good and sustainable abrasion resistance that helps keep the bond strong and with mutual dissolution.

Formability

The zinc coating helps the layer of allow have good durability and is firmly associated with the steel substrate. It is the process used more in forming industrial production, and the possibility of any damage is not seen with zinc coating.

Durability

For any steel structure parts, there is a need to have long-term durability of the product, and it is possible only when they are dipped in a hot-dip galvanization solution. Considering this property is helpful and effectively works to help a beneficial turning stage of the steel structural parts.

Excellent surface appearance

The overall appearance and look of the steel plate should look good and bright. Hence the undertaking of galvanization is a must. However, considering this will help the sheet look more colourful and more beautiful, that will not harm the product from its use.

Weldability

Developing galvanized products demands to weld; the step must be practical and adequately coated to make the welding process easier and faster.

Paintability

Although there is no firm requirement to get the steel painted, to a certain extent, the team demands to get it painted, which will deliver an accurate view and precision. Therefore, consider having painted for automobiles, furniture manufacturing, and other products requiring galvanized steel.

Recyclable

Due to the galvanizing process, the life of the steel is extended. Therefore, zinc and steel can be recycled without damaging the chemical and physical properties.

Conclusion

To sum up, galvanized steel sheet has excellent use and multiple benefits compared to ordinary steel. Hence, if you want accurate and long-term stability for the materials, you can connect with us, and our team will assist you more.

Galvanized Steel

Is Galvanized Steel Rust? Here Is The Best Way To Prevent Rusting.

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It is not a secret anymore that the materials of buildings are super strong with the help of a chemical bond that forms between raw steel and zinc. For a healthy and robust building structure, the contractors and the owners must have a strong material available only with the help of extremely corrosion galvanized steel materials.

These are the materials that can withstand extreme weather and the materials that are surrounded by steel. Galvanizers is the leading shop destination that keeps the most extensive inventory of standard and custom galvanized steel products based on the requirement of the customers. Also, adhering to necessary thickness standards makes producing these steel galvanizers possible.

But considering all these aspects, it is the builders and the project managers who have one common query for galvanized steel, and that is “rust.” So, to maintain its durability, let us share the details on galvanized steel and a closer look at its coating that helps set the material apart from the rest.

Does Galvanized Steel Rust?

If Rust is a primary concern, then the option here is to use the set of metal that does not rust, and another opportunity to it is either to get it coated. One of the metals that do not rust or that you are looking for is stainless steel. It is the material that carries with it a cost penalty but has a performance level. The undertaking of the process of coating the metal is less expensive, and often it is easy to work with them. 

While thinking of coating the steel, the first thing that comes to mind is getting them painted. It helps the protection look for mild steel performance but does not last long. Hence, the best option is to get it galvanized. But yes, the biggest question is, does galvanized steel rust?

The answer to it is yes and no. The zinc coating applied over the steel’s top is called Galvanization. It helps the steel prevent Rust and corrosion for longer than paint. Want to understand how it is possible, continue the reading further.

Process of Galvanizing Preventing Rust

Let us start by sharing some essential details. Corrosion takes place when the metal breaks down and there is an attack of oxygen at the surface. The decay experienced by iron is the root cause of the materials that have Rust. Iron oxide is created by rusting and the flakes that get away from the body of the metal. It is all, therefore, exposing the new metal to oxygen.

Similarly, some metals do not rust and create an oxide layer. These metals are aluminum and stainless. All these details and services resist the process of further corrosion. Then comes zinc, the metal that does not get rusted, and thus it has an exciting bond with steel.

Thus, if you need the steel coating to be solid and last for a long, the ideal option is to have the galvanization process done with the layer of zinc.

Zinc is the only material that helps prevent oxygen and water from reaching the steel beneath. The process is only possible with the help of zinc formation from a layer of zinc oxide on its surface. Wherever moisture is present, the process of generating zinc carbonate is possible. It further delivers the metal into a dull gray colour that is insoluble in the water and stops any further changes from chemical changes.

Factors Affecting Galvanized Rust

It is a fact that zinc carbonate is insoluble, but that does not means that the process of rusting is not possible. Multiple factors may affect the galvanization rust. Some of the effects to it are,

  • Environmental imbalances cause a humidity level. The approx percentage of humidity measurement is around 60% to 70%.
  • A mixture of salt in the water and air.
  • Conditions where the coating has a frequency of wet or soaked surfaces.
  • Urban atmosphere occurs due to sulphur dioxide.

Similarly, multiple reasons affect galvanization rusting.

Conclusion:

Galvanizes is the leading shop destination to help its clients provide the best and most reliable solutions for delivering the best-galvanized materials. To know more in detail, connect with us today!

Galvanized Steel Defects and Causes in Galvanized Coatings.

Galvanized Steel Defects and Causes in Galvanized Coatings

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Hot Dip Galvanizing process is a work that comes with numerous types of defects. Today we will be discussing and explaining the causes of defects and variations that arise in its appearance.

The detail listing for these Galvanised Steel Coating are listed below. Let us get to know about them in-depth.

Defects in Galvanized Steel Coatings

Ungalvanized Weld Areas

The coating that is missed on the areas welded, senses the presence of welding slags. These details are monitored on the welds, thus it is core responsibility of a fabricator to ensure that they remove all the welding slags before the galvanizers are dispatched to the respective unit.

Dark Staining Adjacent to Welds

During the galvanizing process it is necessary that the steel coating is not missed. Here it is necessary to prepare the chemicals that help penetrate the unsealed overlaps on the galvanizers. If these galvanizers have poor quality welds, that needs to be boiled at the time of galvanization. The entire process causes the missing coating and the surface is left contaminated at the time of galvanizing.

Furthermore,anhydrous fluxing salts that are available on the connection will absorb the atmospheric moisture and will leach the galvanizing surface. The complete process of leaching of these salts will reach equilibrium. Hence, it is necessary that the areas are washed properly and no left particles are available during the leaching process and its work.

Dull Gray or Mottled Coatings

The production of thicker galvanized coating will be at the duller side as compared to regular coatings. It is due to the use of reactive steel. These coatings possess a longer life and the only reason for it is because it has greater thickness and higher appearance. All this is not in anyone’s control and the functionality of steel metallurgy is different from regular Galvanized Steel Coatings process.

Dross Pimples/Inclusions

The development process of dross occurs when the galvanization is in the form of zinc-iron crystals. Here the melting point will be at the higher side as compared to the metal in the zinc bath. The drosses that are trapped on the coating of galvanizers will be giving a gritty or rough look. The active components of dross additions is the coating is not harming the performance level. Here the corrosion resistance of zinc dross matches the coating that is available at the galvanizing process.

White Storage Staining

The steel galvanizing coating once done will be stored in wet places with items stacked. Here it is something that will not be in a well-ventilated condition which will react with the atmospheric moisture and develop a hefty amount of white zinc hydroxide deposits on the surface of the galvanizing coating.

Ash Staining

It is a responsibility of fabricatore to make sure that the zinc ashes are developed during the galvanizing process that is immersing in the zinc. These are the molten zinc staked at the bottom of the galvanizers while getting it removed from the galvanizing bath. It is observed that these ashes are trapped where it is not possible to reach, hence it gets stuck to the outer side of the coating at the time of work when removal process is done from the bath. These ashes may be available in lighter brown stain or a dull surface appearance after the complete removal process. It does not get impacted with the overall performance of the galvanized steel coating.

Runs, Drainage Spikes, and Puddling

During the hot-dip galvanizing process, there are defects that cannot be avoided for regular items, and these cannot be tolerated for a longer time. It is because it does not affect the assembly and the functionality of the item. Here it also poses a way for safety risk to get handling of the services accurately.

Bare Patches

The patches occur in uncoated areas of the galvanized work. The core reason to it is due to the non preparing of the surface precisely and properly. It will further be considered as an insufficient pretreatment in degreasing, and pre-fluxing. Thus it is necessary that the fabricator works in these respective areas with the help of suggested techniques for the galvanizing process.

Rust Staining

To remove the rust and stain from the galvanized coating it is necessary to use wire brushing. The uncoated steel is exposed from these steel coatings and will quicken corrosion and strain where the contact occurs.

Similarly there are multiple reasons and causes that occur in Galvanised Coatings. But with our manufacturing organization we help our clients meet their expectations and deliver them hassle-free work.

Dark Staining Adjacent to Welds

During the galvanizing process it is necessary that the steel coating is not missed. Here it is necessary to prepare the chemicals that helps penetrate the unsealed overlaps on the galvanizers. If these galvanizers have poor quality welds, that needs to be boiled at the time of galvanization. The entire process causes the missing of coating and the surface is left contaminated at the time of galvanizing.

Furthermore, anhydrous fluxing salts that are available on the connection will absorb the atmospheric moisture and will leach the galvanizing surface. The complete process of leaching of these salts will reach equilibrium. Hence, it is necessary that the areas are washed properly and no left particles are available during the leaching process and its work.

Dull Gray or Mottled Coatings

The production of thicker galvanized coating will be at the duller side as compared to regular coatings. It is due to the use of reactive steel. These coatings possess a longer life and the only reason to it is because it has greater thickness and higher appearance. All this is not in anyone’s control and the functionality of steel metallurgy is different from regular Galvanized Steel Coatings process.

Dross Pimples/Inclusions

The development process of dross occurs when the galvanization is in the form of zinc-iron crystals. Here the melting point will be at the higher side as compared to the metal in the zinc bath. The drosses that are trapped on the coating of galvanizers will be giving a gritty or rough look. The active components of dross additions is the coating is not harming the performance level. Here the corrosion resistance of zinc dross matches the coating that is available at the galvanizing process.

White Storage Staining

The steel galvanizing coating once done will be stored in wet places with items stacked. Here it is something that will not be in a well-ventilated condition which will react with the atmospheric moisture and develop a hefty amount of white zinc hydroxide deposits on the surface of the galvanizing coating.

Ash Staining

It is a responsibility of fabricatore to make sure that the zinc ashes are developed during the galvanizing process that is immersing in the zinc. These are the molten zinc staked at the bottom of the galvanizers while getting it removed from the galvanizing bath. It is observed that these ashes are trapped where it is not possible to reach, hence it gets stuck to the outer side of the coating at the time of work when removal process is done from the bath. These ashes may be available in lighter brown stain or a dull surface appearance after the complete removal process. It does not get impacted with the overall performance of the galvanized steel coating.

Runs, Drainage Spikes, and Puddling

During the hot-dip galvanizing process, there are defects that cannot be avoided for regular items, and these cannot be tolerated for a longer time. It is because it does not affect the assembly and the functionality of the item. Here it also poses a way for safety risk to get handling of the services accurately.

Bare Patches

The patches occurs in uncoated areas of the galvanized work. The core reason to it is due to the non preparing of the surface precisely and properly. It will further be considered as an insufficient pretreatment in degreasing, and pre-fluxing. Thus it is necessary that the fabricator works in these respective areas with the help of suggested techniques for the galvanizing process.

Rust Staining

To remove the rust and stain from the galvanized coating it is necessary to use wire brushing. The uncoated steel is exposed from these steel coatings and will quicken corrosion and strain where the contact occurs.

Similarly there are multiple reasons and caused that occurs in Galvanised Coatings. But with our manufacturing organization we help our clients meet their expectation and deliver them hassle-free work.

Final Words

Galvanizers, is the leading manufacturing unit that helps its clients overcome all such defects and causes which lead to easy accommodation of the work with details and proper deliverables.

Benefits of Galvanized Steel Structures

Benefits of Galvanized Steel Structures

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Galvanized Steel Structures

In an industrial finishing process, Hot-Dip Galvanizing plays an important role. It is the process that provides proper corrosion protection to Galvanized steel structures. The immersing of structures is in a bath of 450°C molten zinc. It undergoes several layers of zinc that help extend the structure’s life for some more years. It is the work used in both commercial and industrial sectors, as it has maximum corrosion protection for any product and steel structure.

In this article, we will be listing the benefits of Galvanized steel structures that need to be known by industrial and commercial sectors.

Cost Effective:

The process of Galvanizing is deficient as compared to other most commonly used coatings recommended for steel. The work of galvanizing is to ensure that the steels are protected. Because of the use of galvanizing technology, the cost of labor application has risen compared to the factory’s operational work.

Reduces Maintenance:

For the long-term durability of the steel structures, the use of galvanizing is considered. It is the stage where the cost and maintenance of the construction reduce as it lasts for a long. Only the cost and maintenance rise for the plants in remote areas, or the situation is that the plants are no longer in existence.

Extended Shelf Life:

The galvanized steel coatings helps increases the shelf life of the structure along with preventing them from severe exposure. Structural members’ shelf life is significantly increased with proper coating and finishing work, even in extreme urban and coastal directions.

Reliability:

Galvanizing is carried out with two significant standards that help increase performance and coating life. It delivers the maximum strength and with the highest thickness applied that are reliable and predictable.

Hard Coating:

The galvanizing coating is quite unique, which is why it is reliable and durable. To avoid mechanical damage for any reason, the galvanizing company uses the technology of metallurgical structure for the steel members.

High Protective Level:

The unique galvanizing coating helps protect the structure that may have been damaged during transit. The entire process is automated. Galvanized coatings are preferable to steel members to keep them safe from damage and other problems. It is a way better option than organic coatings.

Full-fledged protection:

Every part of a galvanized article is protected, and the industries that provide galvanizing services follow the necessary detailing and ensure the utmost security for the structures. No layers are applied to a structure or fabrication after the fulfilment of the system with the same method and protection technique.

Easy Inspection:

The team uses multiple stages to ensure that galvanized coatings are assessed readily and are simple to install. Companies working on this technology use a process that has an easy layer with continuous efforts and the highest thickness testing that is non-destructive.

Erection Time High:

Once the galvanized steel members are received at the site, they are ready for use. Here the staff has not had to invest additional time and energy to prepare the surface, inspect the area, and get the painting done. The steel members are ready to use with a completely assembled structure that is ready to be used for the next construction project.

No Natural reasons can delay the process of galvanization. It is because the protective coating can easily be applied to the surface of steel members in a fraction of the time.

Conclusion:

Galvanizers is the leading and trusted name in the market for providing the best Galvanizing services. The company has a team of skilled staff who put their input into getting the galvanization coating done quickly in the steel structure. To know more about it, get in touch with us today.

Electro Galvanised Steel

Electro Galvanized Steel Vs Galvanized Steel

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Suggested Topic: Know the Differences Between Electro Galvanised Steel and Galvanised Steel

Galvanization is the process where you apply a protective coating of zinc on the iron or steel to prevent it from rusting. While doing this method, one should take proper care of the same. This process can be hazardous to the person if not done correctly. It will also cause damage or malfunction of the equipment, instrument, and many more.

Before choosing the process, one must indulge in thorough research and understand the difference between electro-galvanized steel and galvanized steel. Knowing the difference can help a person to be safe while selecting the right and most appropriate method and product according to the specific requirement and needs of the business. Otherwise, it can just be a waste of money and time.

Difference between electro-galvanized steel and galvanized steel

Here are some basic differences between galvanized steel and electro-galvanizing.

  • In the case of galvanized steel, one needs to follow up a rigid cleaning process. This process is also known as the 7-bath process. But when it comes to electro-galvanizing, one need not have to follow such stringent cleaning methods.
  • To achieve the galvanized steel coating, the steel is said to get dipped in the molten zinc bath at a temperature variation of 460° c. But for the electro galvanization, the steel gets prepared in a cathode in the electrolytic cell that forms a coating while using the electroplating process.
  • Electro-galvanizing indeed has a very low life ranging from several months to a few years. But in the case of galvanized steel, the average lifespan is between 20 years to 50 years. However, electro galvanization produces an excellent finish. But the galvanized steel offers an unpleasant and dull finish.
  • Above all, the coating thickness of the galvanized steel is about 80 to 100um. Also, the thickness depends entirely upon the dipping duration. The composition and the roughness of the steel affect the same. When it comes to electro galvanization, the coaching thickness is about 10 to 12 um. The current density and the temperature of the electrolyte determine the thickness of the coating in this case.
  • The galvanized steel offers a non-uniform coating. But in the case of electro-galvanized steel, one can expect a uniform coating.

 Cost

When it comes to the cost, galvanized steel, having a normal coat thickness, becomes 40% more expensive than electro-galvanized steel. The electro-galvanized steel has a normal coat thickness, which makes it a lot affordable. The cost happens to increase proportionately with the higher coating thickness.

It becomes extremely necessary for a person to choose a reputed company to select either electro-galvanized steel or galvanized steel to get top-class service.

Why Choose Tanya Galvanizers

Tanya Galvanizers provides the best quality service and products according to your needs and requirements. Whether it is electro-galvanized steel or galvanizing steel, we are the leading name in the market.

Since we have decades of industry experience, we provide the best solution for your requirement. If you are looking for either electro-galvanized steel or galvanized steel, we would be happy to help you.

 

Difference Between Electro Galvanized Vs. Hot Dip Galvanization Steel

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The process of galvanization is extremely crucial when it comes to businesses related metal industry. The main reason being galvanization protects the metal from all natural elements increasing the longevity of the metal. There are usually two types of galvanization that are done to metal they are Electro Galvanization and Hot Dip Galvanization.

In order to understand which galvanization is better for your business, let’s take a look at how each process of galvanization works and what are differences between them!

What is Hot Dip Galvanization?

Hot-dip galvanizing process is one of the most used application of galvanizing process. This process highlights coating a steel or iron object by submerging it into a bath of molten zinc. The bath of molten zinc showcases temperatures around 840°F (449°C). Once removed from the bath, the zinc coating on the iron or steel’s exterior reacts with oxygen in the atmosphere to form (ZnO) Zinc oxide. This Zinc oxide further reacts with carbon dioxide in the atmosphere to form a more compact protective layer known as (ZnCO3) Zinc carbonate. This Zinc carbonate reflects a dull grayish film, which is relatively stable and adheres tightly to the surface of the steel or iron. This results in the hot-dip galvanizing process to create a chemical balance, which ensures that the zinc is chemically bonded to the underlying metal and becomes part of the steel or metal that is being protected through the hot dip galvanizing process.

What is Electro Galvanization?

Electro galvanizing is an electroplating technique used to place a layer of zinc metal on top of a steel surface. It involves immersing a steel component into a solution containing zinc salts followed by the application of electricity to induce an electrochemical reaction on top of the steel. The cold dip approach in comparison to hot dip galvanization process, the electro galvanizing approach provides a thinner coating and more aesthetic appearances method as well. The zinc-rich paints used in cold galvanizing are different from conventional coatings due to the presence of a binding compound. These binders allow the zinc to mechanically bond to the steel to offer an effective level of protection.

Let’s take a look at how each of the process is different from each other.

Comparison Chart between Hot Dip Galvanization and Electro Galvanization

Comparison Chart between Hot Dip Galvanization and Electro Galvanization-Tanya Galvanizers India

In the lights of the differences it is clearly evident how hot dip galvanization is different from electro galvanization process. It is completely based on your organizational requirement you should select your ideal choice of galvanization for your business. To know more about galvanization or for expert advices please get in touch with us.

Why Choose Us

At Galvanizer our team work relentlessly to come up with innovation’s that can deliver you ultimate experience of galvanized products. Our multi-lateral testing and development process ensures delivering our client premiere quality of galvanizing process. With decades of industry experience we offer nothing but the best. We provide assistance in helping you select the best solution for your metal business. To know more on service and business related inquiry get in touch with us.

Understanding-the-difference-between-Hot-dipped-galvanized-and-Cold-Galvanizing-steel-

Understanding the difference between Hot dipped galvanized and Cold Galvanizing steel

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Businesses dealing with metals like iron, aluminum, copper and more for the purpose of product development and service-related issues always faces the harsh reality of corrosion a challenge that disrupts the natural flow of these businesses. The process of corrosion highlights a naturally occurring phenomenon where refined metals are naturally converted into more stable composition when comes in contact with air, moisture, humidity and other natural elements to form oxide, sulphide and hydroxide state. These states even though create a more stable composition, but ends up decaying the metal from outside in or inside out. This usually results in weakening of the structure developed with the usage of metal, or result in decaying the metal to such an extent, that it becomes impossible to use the metal for any other function. It is because of the challenges laid down by the process of corrosion on metals, organization’s dealing in metal businesses often have to suffer huge financial losses resulting in loss of goodwill, loss related metal decay and more. It is because of this reason a solution was brought in by metal businesses throughout the globe with the advancement of technology. The solution was galvanization of the metal a solution discovered in 1742 by Melouin a French chemist, where he highlights the application of zinc on the metal surfaces to increase the longevity of the metal. Even though this application of zinc on metal dates back to 2500 B.C. but the discovery of 1742 laid the foundation of exploring the zinc application on metal to the extent where application methods used could result in a change of the timeline for metal longevity. Over the years of technological changes and chemical research two significant approaches of zinc application were discovered, hot and cold dip which functions as a pivotal discovery to today’s galvanization process in the industry.   

The approaches to the process of galvanization on metals as signified earlier are of two types they are hot and cold dip galvanizing. Where both the approaches are ideal for protection against corrosion, but it is thoroughly based on your business requirement you should decide which galvanizing process you should take into account to create a protective layer for your metals used in the business. 

Let’s take a look at what galvanization is and how hot and cold dip galvanizing differs from each other.   

What is Galvanization?

For the common approach of understanding galvanizing process refers to the approach that highlights the application of a zinc coating to the surface of a metal. The usual metal taken into consideration for the process of galvanization are Iron (Fe) and Zinc (Zn). The process of galvanization is principally utilized as a defensive mechanism to prevent corrosion and, likewise, increment the workable existence of the secured metal segment. When appropriately applied to a steel surface, zinc coatings offer two main types of protection: galvanic protection and barrier protection, which in turn increases the longevity of the metal by protecting it against possible corrosion. 

Understanding Barrier Protection

Barrier protection signifies the application of zinc on the surface of metal like steel, where the applied zinc hardens over time to create a sheet of layer on the steel. This sheet of layer acts as a protective agent for the steel by conversion of zinc into zinc oxide through the process of surface electrolyte. The hardened zinc oxide layer in turn protects the steel from corrosion against the electrolyte process that usually takes place when the metal comes in surface contact with air and moisture. This protection layout of barrier protection usually takes place because zinc oxide is impervious to moisture and air. This results in preventing the underlying steel to come in contact with air and moisture, which in turn prevents it from further corrosion and increasing its life to a great extent. 

Understanding Galvanic Protection

Galvanic protection, also known as cathodic protection, protects the underlying steel substrate by corroding preferentially, thus sacrificing itself in the process. This sort of protection is particularly helpful for circumstances where the protected steel may get exposed because of scratches, cuts, marks or loss of coating due to rigorous usage. Since zinc is an exceptionally receptive and electronegative metal, it will assume the role of the anode, which will result it to be corroding first in an event where the steel underneath get exposed to surface contact. This process of approach by zinc will continue to offer galvanic protection until the coating is entirely consumed. This in turn protect the underlying steel for a longer period of time safeguarding it from exposure surface electrolyte process because of chemical balance that has created an equilibrium because of chemical approach that has been applied in covering the steel in the galvanic process, unlike that of barrier protection, where sheet layer removal can expose the steel to vulnerability. 

This chemical approach to protection under galvanic process is divided into particular application methodology they are hot and cold dip galvanizing process. Let’s take a look at how each of these processes functions and how they provide protection to the underlying metal. 

Hot Dip Galvanization

Hot-dip galvanizing process is one of the most used application of galvanizing process. This process highlights coating a steel or iron object by submerging it into a bath of molten zinc. The bath of molten zinc showcases temperatures around 840°F (449°C). Once removed from the bath, the zinc coating on the iron or steel’s exterior reacts with oxygen in the atmosphere to form (ZnO) Zinc oxide. This Zinc oxide further reacts with carbon dioxide in the atmosphere to form a more compact protective layer known as (ZnCO3) Zinc carbonate. This Zinc carbonate reflects a dull grayish film, which is relatively stable and adheres tightly to the surface of the steel or iron. This results in the hot-dip galvanizing process to create a chemical balance, which ensures that the zinc is chemically bonded to the underlying metal and becomes part of the steel or metal that is being protected through the hot dip galvanizing process.

How Hot Dip Galvanization is performed

Though the concept of hot-dip galvanizing may seem simple, the process consists of several crucial steps. The steel first goes through three cleaning stages to prepare its surface for galvanizing; these are degreasing, pickling and fluxing. Degreasing is used to remove dirt, oil and other organic residues; a mild acid bath, or pickling, etches the steel and removes mill scale and iron oxide; and fluxing further removes any oxides and coats the steel with a protective layer that prevents the formation of further oxides on the steel surface prior to galvanizing. Once the cleaning process is completed, and the structure has dried, it is ready to be immersed into the molten zinc bath. Molten zinc flows in and around the iron or steel object, thus thoroughly coating it to protect all surfaces. The coated material is then removed from the bath and air-dried before inspection. 

Cold Dip Galvanization

Cold dip galvanizing is comparatively a much simpler process. The cold dip galvanizing process showcases application of a zinc-rich paint to the surface of a metal or steel element to protect it from corrosion. As such, the term “cold galvanizing” is considered to be a misnomer among some professionals in the coating industry. Zinc paints may be applied by brushes, rollers, spray guns, etc. Coatings may also be applied by the electro galvanizing:”Electro galvanizing is an electroplating technique used to place a layer of zinc metal on top of a steel surface. It involves immersing a steel component into a solution containing zinc salts followed by the application of electricity to induce an electrochemical reaction on top of the steel. The cold dip approach in comparison to hot dip galvanization process, the electro galvanizing approach provides a thinner coating and more aesthetic appearances.” method as well. The zinc-rich paints used in cold galvanizing are different from conventional coatings due to the presence of a binding compound. These binders allow the zinc to mechanically bond to the steel to offer an effective level of protection.

How Cold Dip Galvanizing is performed

Like hot-dip galvanizing, cold galvanizing can provide barrier protection and also some degree of cathodic protection. However, the zinc dust present in the paint or coating must be in high enough concentrations to promote electrical conductivity between the steel and the zinc. The surface preparation required for applying zinc-rich coatings is less demanding than hot-dip techniques. Before coatings operations begin, the surface of the steel must be clean and dry. Usually, a wire brush is first used to remove rust or any other corrosion products that may be present. Dirt, grease, chemicals and other organic compounds must also be removed accordingly. Once the surface is prepared, the zinc coating is applied to the surface in as many coats as required.

The introspection across both hot dip and cold dip galvanizing process clearly showcases how each of the approach is thoroughly different from other even though the processes aims at a common resolution of protecting metal from corrosion. The introspection throw light on how the hot dip is a chemical approach and more long lasting, while cold dip is a more physical surface contact approach, but less consistent in comparison to hot dip. 

If you are into metal businesses related to services and product then galvanization process is a must for your organization. The choice of your galvanizing approach for your metal thoroughly depends on your organizational requirement, however if you want to know more about galvanization and which approach will compliment your business, please get in touch with us. 

Why Choose Us

At Galvanizer our team work relentlessly to come up with innovation’s that can deliver you ultimate experience of galvanized products. Our multi-lateral testing and development process ensures delivering our client premiere quality of galvanizing process. With decades of industry experience we offer nothing but the best. We provide assistance in helping you select the best solution for your metal business. To know more on service and business-related inquiry get in touch with us. 

Maintenance of Galvanized Steel-Tanya Galvanizers

Maintenance of Galvanized Steel

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Some of the tips for maintaining and ca ring for hot-dip galvanized products are.

  • Do not expose your galvanized steel product to environments where pH is below 6 and above 12 for long hours. Outside pH 6-12 range, the galvanized coating is open to quick corrosion. 
  • Do not roughly clean your galvanized product and try avoiding rough washing of your galvanized product altogether. Galvanizing protects the steel from corrosion by developing a thin barrier film of insoluble zinc corrosion products (known as patina) on outer surface of galvanized steel through exposure to atmosphere. Frictional cleaning removes protective patina and galvanized articles have to build this barrier protection again which leads to consuming more zinc. Constant irritational cleaning will consume zinc more quickly and reduce the life of the product.
  • Galvanizing should be cleaned by using alkaline-based cleaners with pH of 12 or lower, water-based emulsifiers or organic solvents. The area should be rinsed with fresh water and wiped clean with a soft cloth.
  • Avoid direct contact of galvanized steel products with dissimilar metals, like copper and brass, in corrosive environments. In case of dissimilar metals being used together make sure that there is an insulator between dissimilar metal and galvanized products.
  • If a galvanizing product is situated in a highly corrosive environment like heavy, coastal, industrial, etc the product should be rinsed with potable water regularly under sheltered conditions.
  • Do not store a galvanized product for a long time in a damp and poorly ventilated condition. The storage location should be dry with effective ventilation.
  • In case of physical damage to the galvanized coating of the product, the damaged area should be repaired in accordance with AS/NZS 4680.

Cleaning Galvanized Steel 

While building or renovation, cement and mortar can be dropped on galvanized steel which is very difficult to remove once hardened. Remove large parts of deposit as close to surface as practicable, after that oxalic acid can be used to remove all the remnants from galvanized steel which should be followed with rinsing. Other acids are effective on mortar or cement, but they are very aggressive on zinc and are not recommended.

Paints, like graffiti, should be removed by thinners. If scraping is required, you can use plastic or wooden scrapers. In case the paint is wet or fresh, normal thinners can be used. Once the paint gets hardened, a non-alkaline stripper can be used. Rinsing is important to remove residues that cause discoloration later or encourage corrosion.

Mild stains can be removed by using common household ammonia cleaners and being sure to rinse the galvanized article with fresh water afterward.

Water draining of other adjacent steelwork which is rusting can flow on galvanized steel and cause brown stain. It can be treated by using commercial oxalic acid or proprietary solution which is generally used for descaling pots and pans. Rinsing with water is important to remove corrosive residues of cleaner.

In order to generally clean bulk contaminants like dirt and dust ordinary laundry soaps can be used. For stubborn or large areas, the use of low-pressure wash in collaboration with cleaning materials like car or truck wash or pure water are effective. Truck and car cleaners minimize corrosion on vehicles metallic parts and are suitable for use on galvanized steel. It is important that the steel is washed down with fresh water after cleaning.

Reasons Why You Need To Use Galvanized Steel-Tanya Galvanizers

Reasons Why You Need To Use Galvanized Steel

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There are innumerous benefits to be derived from using Galvanized steel. This particular element is regarded to be sustainable, honest and proven.

Reasons to choose Hot dip galvanizing services

There are numerous reasons to use galvanized steel, some of which are given below:

  • Honest: Since unique allow development takes place while immersing clean steel into molten zinc, coating becomes effectively part of steel. This element is sure to appear nice and beautiful for a long time.

  • Proven: Galvanized steel is said to share a very long history of more than 200 years. Several examples do exist in different environments about its impeccable performance. In 1944 was constructed a bridge in Dorset at Lydlinch for assisting supply flow during D-Day landings. Callender-Hamilton design was intended originally to serve as temporary bridge. However, this bridge is still in use! On carrying out an inspection in 1999 of the bridge by the Galvanizers Association, it was found to be in top new condition without having any rust signs on its members. The experts are of the opinion that the coating will remain maintenance free for over 100 years.

  • Tough: Galvanizing process is of unique nature. Zinc iron alloy layer series is formed thus offering abrasion resistant and tough coating. It means quick erection of the structures and less damage caused to the site.

  • Sustainable: Galvanizing does offer long term durability due to its low relative environmental burden with regards to energy along with various globally relevant impacts. Studies conducted have revealed high environmental and economic costs that are associated with steel structure requiring repeated maintenance painting. Again lack of attention towards maximum corrosion protection is likely to leave behind damaging economic legacy related to repeated maintenance costs. It is the local authorities who are found to bear the future maintenance costs of social housing projects. Again, galvanized steel being used for public infrastructure projects does lead towards lower maintenance budgets, as well as releasing public funds meant for various purposes.

  • Can provide complete coverage: According to the industry experts, steel gets dipped into molten zinc bath. This means protection can be offered to internal and external surfaces of steel component by hot dip galvanizing.

Related: Hot Dip Galvanizing Process | Tanya Galvanizers

  • Self healing: With regards to steel, zinc tends to corrode, sacrificing itself towards safeguarding the steel. Therefore, such sacrificial protection is offered by hot dip galvanizing. Zinc based corrosion products are said to be deposited upon steel, thereby resealing it from atmosphere and to stop corrosion.

  • Quick: The process of steel being dipped in molten zinc tends to take few minutes. However, it is preparation of steel work does take a good amount of time. In practice, several other works gets processed within the same time. Hence, the typical time for turnaround is approximately 3 days. However, by arrangement, 24 hour turnaround can be offered by galvanizers.

Hot dip galvanizing in Vadodara is offered by some of the reputed providers in the region. Contacting the best ones will help the person to get top quality galvanizing products at affordable rates.

Get in touch with us via Email: info@galvanizers.co.in or
Phone: (0265) 2632517 (O) / +91 8000842648