Importance of Crash barrier Hot Dip Galvanizing

What is Hot Dip Galvanizing?

The process of zinc coating on steel and Iron is known as Hot Dip Galvanizing. This process is widely followed to increase the life of the base metal and to ensure that the base metal does not rust with time. Be it a fabricated or an unfabricated piece of metal, the molten zinc is used to coat the base metal at about 840 degree Fahrenheit while performing a Hot Dip Galvanizing.

What is Crash Barrier?

 Crash barrier is a strong fencing system used usually to barricade roads to avoid accidents or crashes. These fencings are made of solid metals acting as strong protection by the sides.

How does a galvanized crash barrier more efficient?

Galvanizing the crash barriers is the smartest option versus any other paint-on options. This process of galvanizing makes the crash barriers more durable and stronger as it gives a complete coverage. The zinc coat also makes the fences more absorbent to shock as these are abrasion resistant. Galvanizing the barriers also helps as the zinc coating grows parallel on the steel making the edges and corners the same thick. 

Crash barrier hot-dip galvanizing acts as an extra protection when a sudden major accident takes place. This is more in demand when fencing on the highways to avoid fatal incidents. 

Be a part of the environment

Zinc as being a renewable resource and available in abundance makes it more environment friendly option. Also, in the process of galvanizing the zinc does not lose its properties making it even more recyclable.

Crash Barrier is of different types including Roadside, Median, Bridge and work zone barriers. 

Galvanizers make it easy for you to get the safest and the most affordable Crash barrier hot-dip galvanizing possible. They followed a step by step process to ensure galvanizing done right, keeping it safe being on the road. They ensure the best quality of hot-dip galvanizing making it possible for the crash barriers to sustain longer in extreme exposure to the environment.

Inspection of the Hot Dipped Galvanizing Process

Inspection of the Hot Dipped Galvanizing Process

Hot dip galvanizing is the process of application of a zinc coating to steel and iron. The process involves dipping of both unfabricated as well as fabricated pieces of steel, or iron into a bath of molten zinc at about 840 degrees Fahrenheit. Galvanization is done to enhance the ability of the base metal that is iron or steel to last for a longer duration of time without getting corroded or rusted. It is precisely where the importance of galvanizing lies. 

Now, before the hot dipped galvanizing process a lot of steps are carried out to make sure that the entire process is carried out in a smooth and uninterrupted manner. In addition to this, utmost care is taken during the entire process to ensure that the intended results are obtained. The final step in the process of galvanization is inspection. Inspection of hot dipped galvanizing process refers to process of checking of the end product after the completion of the galvanizing process. The inspection of hot dip galvanizing process primarily focuses on the following two points. 

The thickness of zinc coating on the base metal 

The thickness of the coating determines the time frame of protection. Usually, the thicker is the coating of zinc, the longer is the expected life span of the base metal. Here are a few important things to consider.

  • Local coating thickness – It is the mean value of the zinc coating that is obtained from the specified number of measurements within an area of reference
  • Mean coating thickness – It refers to the average value of the local thicknesses on the different base metal pieces in the control sample

The appearance of the zinc coating on the base metal

The appearance after the hot dipped galvanization process refers to the visual inspection that checks for any sharp drops or points or any kind of irregularities. Here are the essential points to consider while inspecting the appearance of the zinc coating.

  • While inspecting visually, the coating of zinc must be free from any sharp points or drops
  • There should not be any irregularities 
  • No areas should be uncoated
  • Presence of any kinds of lighter or darker grey spots 

All the points mentioned above should be carefully inspected to make sure that the end product of hot dipped galvanization process are perfect in all aspects and are ideally suited for the intended purpose of use. 

 

Difference between Hot dip galvanizing and Boronizing-Tanya Galvanizers

Difference Between Hot Dip Galvanizing and Boronizing

Hot dip galvanizing and boronizing are two different processes that involves coating of a base metal or alloy to enhance its life to a significant extent. Both the process forms a protective surface layer on the chosen base metal or alloy but each of the processes are completely different from each other. To learn about the difference between these two processes, let us delve a bit deeper into each process. 

Hot Dip Galvanizing 

Hot dip galvanizing is a process in which the base metal usually steel is dipped into a bath of molten zinc at high temperatures of about 450 degrees Celsius or 840 degrees Fahrenheit. Before dipping, the base metal or steel is cleaned in a caustic solution for removal of dirt and then passed through an acidic solution for removing flakes of iron oxide. The base metal is further cleaned with the help of a chemical cleaning agent like ammonium chloride so that the bonding of the base metal with zinc can be better. 

Boronizing

Boronizing, on the other hand, is process of surface hardening of steel. It is a thermo chemical process for hardening the surface of the base metal usually steel. In this process, boron is added to the base metal or alloy where the atoms of boron are diffused into the surface of the base metal. 

Difference in Functionality

Now, we are clear with the differences between the two processes. Next, we would be learning about the functional differences or the beneficial difference between hot dip galvanizing and boronizing. 

  • Hot dip galvanization of steel helps in the improvement of the corrosion resistance capacity of steel of aby other base metal used. But on the other hand, boronizing case hardens the base metal, thereby providing even higher or superior corrosion resistance. 
  • Boronizing plays a vital role prevention of wear and tear of the base metal, thereby making sure that the base metal becomes highly durable in nature. Reduced wear and tear provide the base metal with great capacity to withstand any external elements without any kind of compromise in the functionality of the base metal so boronized.  
  • Hot dip galvanization only helps in the improvement of the corrosion resistance capacity of the base metal. But boronizing not only case hardens the surface of the base metal but also plays a significant role in improving the temperature stability along with several other mechanical properties of the base metal. 

Why Prashant Galvanizers?

If you are looking forward to premium quality hot dip galvanizing services or boronizing services, do not look any further and come to Prashant Galvanizers. With several years of experience and expertise in this field, Prashant Galvanizers have emerged as one of the top service providers in this field. So, for all sorts of galvanizing or boronizing requirements, all that the users need to do is to get in touch with the expert and dedicated team of Prashant Galvanizers for the best solutions. 

Key Considerations for Hot Dip Galvanizing

Key Considerations for Hot Dip Galvanizing

Hot dip galvanizing is a process where a piece of base metal is immersed into a bath of molten zinc for enhancing the durability and functionality of the base metal. After the completion of the hot dip galvanization process, the base metal is resistant to corrosion and hence appropriately suitable for the intended purpose of use. But the users need to make sure to choose a trusted, reputed, and reliable service provider so that the best practices are followed for the optimum quality galvanizing. One of the most important rules to be followed during the process is that the designer, fabricator, as well as the galvanizer should work together. An appropriate three-way communication plays a vital role in the elimination of most of the problems in the hot dip galvanization process.

To make the entire process smooth and hassle free, we have listed a few of the key considerations for the hot dip galvanizing process. 

Removal of Soil and Grease – Oil, grease, shop oil, and soluble paints are to be removed from the base metal with the help of a hot alkaline cleaner. On the other hand, soils like vinyl, epoxies, welding slag, and asphalt should be removed by grit blasting or other mechanical process of cleaning. 

Pickling – It is the process of chemically cleaning the surface of the base metal. An acid bath is used for the removal of rust and mill scale for providing a chemically clean surface of the base metal. It would be ideal to use hydrochloric acid since it is more environment friendly and does not affect the surface of the base metal. 

Prefluxing – The base metal which is usually steel needs to be immersed in a liquid flux for the removal of oxides and prevent oxidation before finally dipping it into the bath of molten zinc. It would be ideal to use zinc ammonium chloride solution for Prefluxing process.

Galvanizing – The prepared base metal then needs to be immersed into a bath of molten zinc at about 455 degree Celsius or 850 degree Fahrenheit to ensure appropriate metallurgical bonding of zinc to the base metal. 

Finishing – Once the metal is withdrawn from the molten zinc bath, it is essential to remove the excess zinc by draining, vibrating, or centrifuging. Next, it is important to cool the galvanized item in air or by quenching in water. The air quenching process takes a bit longer as compared to the water quenching method but it results in a much better surface finish, and hence an important consideration in architecturally exposed steel. 

Checking or Inspection – Checking or inspection of the final product is the ultimate step as well as consideration in the hot dip galvanizing process. In this step, the thickness and the surface conditions are checked for meeting the quality criteria. 

All these key considerations mentioned above would make sure that the base metal is appropriately galvanized. In this regard, it would be ideal to call in for the helps of a professional service provider for getting the best solutions. In this situation, Prashant Galvanizers would undoubtedly the ideal choice. With several years of experience in this field, Prashant Galvanizers makes sure to provide optimum quality galvanization so that none of the users get even a single chance to complain. So, for all your galvanization requirements, get in touch with the team of Prashant Galvanizers at the earliest. 

Hot Dipped Galvanizing Services In Vadodara-Tanya Galvanizers

Hot Dipped Galvanizing Services In Vadodara

At Vadodara, there are many providers of hot-dipped galvanizing services. However, if you want a reliable and cost-saving service then contact us at Tanya Galvanizers. We have always emphasized quality before quantity and all the services given by us to the companies have been appreciated. 

We do galvanizing works for both public and private sectors like railways, telecommunication, power etc. A well-organized and highly advanced infrastructure helps us in standing apart from our competitors. The sophisticated infrastructure helps us in providing quality products and services. 

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The services we provide include channel sleepers, lifting barriers, clamps, cross-bracing arms, E- brackets, danger boards/clamps, top channels for pin insulators, height gates and footbridges for the railways and items like ‘V’ cross arms among others. We have modern machinery, latest technology and well-expereinced engineers who produce quality products at customized prices. 

We also commission and install hot-dip galvanizing plants for our customers. We provide consultancy only to our trusted clients at present.

Painting A Steel Surface Vs Hot Dip Galvanization To Protect Against Corrosion-Tanya Galvanizers

Painting A Steel Surface Vs Hot Dip Galvanization To Protect Against Corrosion

Hot dip galvanized steel is a steel covered in zinc coating to protect the steel from corrosion. In the galvanizing process, the steel is cleaned and dipped in a bath of molten zinc solution at temperature of approximately 450 degrees.

Liquid zinc sticks to the metal and when the metal is pulled out of bath the zinc gets hardened. As a result there is a really hard outer coating of zinc which protects the inner steel core from corrosion and other types of moisture.

  • Barrier Protection

Barrier protection is the oldest and widely used method for protection against corrosion. It isolates the base metal from the environment. Just like paints, hot dip galvanizing coating provides barrier protection to steel. As long as the barrier is intact, there is no corrosion and the steel is protected. If the barrier gets breached, the corrosion starts.

Two most important properties of barrier protection are abrasion resistance and adhesion to base metal. The impervious and tightly bonded nature of zinc makes galvanizing a good barrier coating. Coating like paint which have pin holes can be penetrated by elements which causes rapid under film corrosion.

  • Cathodic Protection

Cathodic protection is an effective way for protection against corrosion. It requires changing an element of corrosion circuit by introducing a new corrosion element which ensures that the base metal becomes cathodic element of the circuit.

In case of hot dip galvanizing zinc will either corrode or protect to protect the underlying base steel. The cathodic protection ensures that even if the coating gets damaged to the point bare exposed steel, no corrosion will start until the surrounding zinc gets consumed.

  • Zinc Patina

Zinc patina protects zinc coating unlike cathodic and barrier protection which resist corrosion to steel. Zinc begins to corrode when exposed to atmosphere like all metals. Freshly galvanized steel can naturally wither when exposed to dry and wet cycles in the environment.

Fully developed zinc patina is passive and stable film that sticks to the zinc surface and is not soluble to water so it does not get washed off in rain or snow. Zinc patina gets corroded very slowly and protects galvanized coating underneath which brings down the corrosion rate of the steel in the same environment.

As the development of zinc patina takes place, galvanized coating turns in a matte grey color. Zinc patina formation is very important in long-lasting corrosion resistance of hot-dip galvanizing.

Hot dip galvanized coating is resistant to mechanical stress. The resistance is twenty times higher than resistance of PVC coatings and epoxy dust coatings and eight times higher than resistance of epoxy coatings.

One of the advantages of hot-dip galvanizing is there is no doubt about quality as you cannot apply zinc coating to an unclean steel surface while it is possible on the other hand when applying paint.

One of the advantages of hot-dip galvanizing is there is no doubt about quality as you cannot apply zinc coating to an unclean steel surface while it is possible on the other hand when applying paint.

Read more: Can Galvanized Steel be Painted? Precautions to Take

Thus, hot dip galvanizing is a far more lasting and better solution than paint to protect the corrosion of steel surfaces.

Materials Suitable for Hot Dip Galvanizing-Tanya Galvanizers

Materials Suitable for Hot Dip Galvanizing

Hot dip galvanizing process refers to the process of coating the base metal with zinc by dipping the base metal into a bath of molten zinc so as to enhance the durability of the base metal and at the same time prevent it from corrosion. Now, at the time when the decision for galvanizing is finally made, it is to be made sure that the base metal should be appropriately fabricated for high quality galvanizing. There are a number of rules that are required to be followed for perfectly designing the base metal for galvanizing. These rules when applied provides the intended results and ensures maximum protection from corrosion. In an addition to this, following the rules properly also makes sure that the galvanizing personnel is safe, cost of coating is lowered and certainly produces the best quality galvanizing.

At the time of hot dip galvanizing, it is to be made a point that the designer, fabricator as well as the galvanizer should necessarily work together. The proper communication between these three ensures that a wide range of problems during the entire process getting eliminated. Here is a list of the few major steps to be taken in this regard.

  • Removal of soil and grease from the base metal
  • Pickling of the base metal to remove the rust from its surface
  • Fluxing of the base metal for the removal of oxides for the prevention of oxidation prior to dipping into molten zinc
  • Now, galvanizing is done where the base metal is dipped into a bath of molten zinc to form the coating of zinc
  • Then comes the finishing step where the base metal is withdrawn from the bath and the excess zinc is removed by draining by vibrating and for the smaller pieces by centrifuging.
  • Finally, inspection is done to check for any imperfections

Materials Suitable

Almost all of the ferrous materials are suitable for the purpose of hot dip galvanizing. The structural steel metals including the high strength low allow materials are hot dip galvanized after fabrication for obtaining the long lasting protection by the zinc coating.

Here is a list of materials that are suitable for hot dip galvanizing.

  • Cast iron
  • Cast steels
  • Malleable iron
  • Hot and cold rolled steels

Though most of the ferrous materials are suitable for being hot dip galvanized, the characteristics of the galvanized coating so formed is a function of the chemical composition of the material. A reaction between the steel and the molten zinc is the basis of hot dip galvanization which results in the formation of layers of alloy of zinc and iron.

Read more: Hot Dip Galvanizing Process followed at Tanya Galvanizers Vadodara

Why Tanya Galvanizers?

At any point of time, you are looking forward to the premium quality hot dip galvanization services, then Tanya Galvanizers would be the most appropriate choice in this regard. With several years of experience in this field, we aim to offer best hot dip galvanization services so as ensure complete satisfaction among each of the users opting for the same.

Hot Dip Galvanizing Process followed at Tanya Galvanizers Vadodara

Hot Dip Galvanizing Process followed at Tanya Galvanizers Vadodara

Tanya Galvanizers is one of the most trusted, reputed and reliable hot dip galvanizing service providers. The popularity and fame of Tanya Galvanizers can be very well understood since Tanya Galvanizers are the most sought after service provider at the time when it comes to hot dip galvanizing services. But still there are a number of people who are not sure about the exact hot dip galvanizing process followed at Tanya Galvanizers. For them here we have stated the process in details so that all the users are totally clear about the process so followed at the time of hot dip galvanizing by Tanya Galvanizers.

The Process of Hot Dip Galvanizing – Tanya Galvanizers

We all know that hot dip galvanizing is a process of applying a coating of metal on the base material so as to increase the durability, functionality and corrosion resistive power of the base material. In the process of hot dip galvanization, Tanya Galvanizers makes use of a proprietary formulation of the molten metals which necessarily produces the most consistent coating thickness on the base material thereby creating an even as well as enduring finish. So, let us learn about the complete process of hot dip galvanizing at Tanya Galvanizers.

It all Starts with Preparation

The base material so arriving at Tanya Galvanizers which is usually steel first goes through a process of thorough inspection. This is to make sure that the drainage as well as the venting requirements are effectively met. Once the steel is in the staging area, it is handled with extreme care so that the transportation is done quite effectively through the initial process of cleaning. This concludes the process of preparation of steel for galvanizing.

Cleaning the Base Material

The next step cleaning which is one of the most vital part of the overall process of hot dip galvanization. This cleaning process begins with the complete dipping of the base material that is steel in a hot alkali solution for the removal of all organic compounds and dirt. The next step is the acid pickling process that helps in the removal of scale or rust. The ultimate step involved in the process of cleaning is fluxing which helps in the elimination of the surface oxides for the effective promotion of intermetallic development.

Hot Dip Galvanizing

As can be understood from the name, in this step the base material steel is submerged in a bath of molten zinc until the temperature reached is 840 degrees Fahrenheit. At this point of time, zinc reacts with the base material steel for the formation of zinc and iron intermetallic layers on all the surfaces completely leaving not even a minute part. Then it is taken out and cooled which concludes the process of hot dip galvanization.

Read more from our blog: Understanding The Hot Dip Galvanizing Process

Quality Inspection After Dip

This is final step for concluding the overall process of hot dip galvanization. In this step, the galvanized steel is properly cleaned after cooling, then weighed and properly inspected. The use of calibrated instrumentation in this regard makes sure that the quality standards are effectively met along with the thickness of coating, appearance as well as compliance with all of the specifications. All of these are carefully reviewed prior to the final approval of the galvanized steel being ready to be shipped. Now, you have a clear and complete understanding of the hot dip galvanizing process so followed at Tanya Galvanizers. So, for all your hot dip galvanizing needs, do not hesitate to contact Tanya Galvanizers for the best of the services.

Call: (0265) 2632517 / +91 8000842648

The Difference Between Hot Dip Galvanizing and Cold Galvanized-Tanya Galvanizers

The Difference Between Hot Dip Galvanizing and Cold Galvanized

Galvanizing is basically the process of adding a coating on any base metal for the purpose of increasing its strength, efficiency as well as durability. In most of the cases of galvanization, the base metal is steel and zinc is the metal with which the steel is coated. This coating of zinc on stainless steel readily enhances its strength and durability. This is exactly the reason as to why the process of galvanization is so popular. But it is to be kept in mind, that a trusted, reputed and reliable galvanizing service provider like Tanya Galvanizers should be necessarily chosen so as to get the best possible results in this regard.

Now, the process of galvanization is classified into two main types which are as listed below.

  • Hot dip galvanizing
  • Cold galvanized

These two processes of galvanization have the same ultimate motive of application of a coating to the base metal but there are some differences between the two process of galvanization. A detailed explanation of the difference between hot dip galvanization and cold galvanized are as discussed below.

Differences in Terms of Plating

In hot dip galvanization the base metal is dipped into a bath of molten zinc so that a layer of zinc is formed on the base metal where the zinc coat very strongly adheres to the base metal. This process helps in the prevention of the base metal from being corroded thereby enhancing its durability.

On the other hand, cold galvanizing where the zinc salt solution is plated on to the base metal by the process of electrolysis. This process does not involve any kinds of heating. This form of galvanization does not allow the zinc to adhere strongly to the base metal and a wet environment causes the coating to fall off very easily. Cold galvanizing is also referred to as plating.

Differences in Technical Terms

The base metal is first degreased and then followed up with a number of process of like pickling, dipping, drying, immersion in molten zinc & finally cooled in case of hot dip galvanization.

On the other hand, in case of cold galvanizing involves a process of electrolysis of a solution of zinc salt in which the zinc gets deposited on the base metal located at the anode during the process of electrolysis. The base metal so placed at anode during the process of electrolysis goes through the process of degreasing and picking prior to the process.

Differences in the Process of Treatment

Hot dip galvanization is actually a chemical treatment in which an where an electrochemical reaction takes place.

But in case of cold galvanization, a physical treatment takes place in which a layer of zinc just gets brushed on the base metal.

Differences in Function

The base metal is immersed into a bath of molten zinc which forms a uniform layer of zinc on the base metal that strongly adheres to the to its surface thereby enhancing the benefits of the galvanizing process since it resists corrosion, rusting etc. in a much better manner.

During the process of electrolysis in case of cold galvanizing, the zinc is deposited on the base metal at the anode during which is not at all uniform. As it is conducted in a wet environment, the coating layer of zinc falls off quite easily.

Differences in Emissions

Hot dip galvanizing involves much lesser emissions and the galvanized pollutants includes the parts of waste acid pickling mainly.

But the cold galvanized pollutants include parts of electroplating waste, waste acid pickling, liquid waste such as passivation.

Thus, it can be clearly understood that hot dip galvanizing is a much more appropriate and effective option as compared to cold galvanization.

Why Tanya Galvanizers?

At the time of looking forward to the best hot dip galvanizing services, no other option would be as good as Tanya Galvanizers in this regard. With their years of experience and a highly trained team of experts make sure that Tanya Galvanisers is undoubtedly the best when it comes to hot dip galvanization services.

Understanding The Hot Dip Galvanizing Process-Tanya Galvanizers

Understanding The Hot Dip Galvanizing Process

Galvanization is a process in which the base metal is coated with some other material so as to increase the durability, strength as well as functionality of the base metal to a great extent. This is turn is of a great help in enhancing the overall usability of the product. For this reason, the process of galvanization is readily used.

What is Hot Dip Galvanization?

Hot dip galvanization process is the application of a protective coating of zinc on steel so as to increase the durability of steel thereby playing a vital role in the protection of steel from all kinds of corrosion. This is basically the most commonly used methods of galvanization of steel. This process involves submersion of steel which is the base metal in this regard into a bath of molten zinc. Now, since the process involves complete submersion of steel into molten zinc, the coverage is necessarily complete both inside as well as outside. Thus, even if the steel to be galvanized is hollow, the protection is complete thereby making the steel more durable in nature.

How the Process of Galvanization is Carried Out?

The most important part in the process of hot dip galvanization is the preparation of the surface of the steel to be galvanized. It is of immense importance to make sure that the steel to be hot dip galvanized should be completely clean so that the molten zinc is able to form a sound as well as complete metallurgical bond with steel. Now, the overall process of cleaning and preparation of the surface of steel involves the steps that are as listed below.

  • Caustic Cleaning

The process of surface preparation of steel begins with the step of caustic cleaning. As can be understood from the name of the step, it involves the removal of a number of organic impurities such as dirt, grease and oil from the surface of the steel by a hot alkali solution. All the other unwanted substances like asphalt vinyl, epoxies or welding slag is cleaned by mechanical means.

  • Pickling

In this step, scale and rust is removed from the surface of the steel with the help of hydrochloric acid in an appropriate temperature. This step is vital for the purpose of elimination of rust as well as scale from the surface of the steel to be hot dip galvanized.

  • Rinsing

Once the process of chemical cleaning is wrapped up, the steel to be galvanized is then properly washed in water so that the transfer of acid residues to the following stages of galvanization is readily minimised.

  • Fluxing

Fluxing is the ultimate step in the preparation of the surface of steel for the hot dip galvanizing process where all of the oxides are removed and further formation of oxides is prevented thereby playing a crucial role in the promotion of the bonding of the coating of zinc with the steel in the best possible manner.

Now, once the overall process of surface preparation of steel is complete, it is then submerged in a bath molten zinc of approximate temperature of 830 degrees Fahrenheit which contains about 98 percent pure zinc. Then the coated steel is taken out and properly cooled and the hot dip galvanized steel is appropriately ready for use. With this. The process of hot dip galvanization is completed.

Read more: www.galvanizers.co.in/blog/how-we-improve-the-hot-dip-galvanizing-process

Why Choose Tanya Galvanizers?

Tanya Galvanizers is a premier hot dip galvanization service provider where all of the users can be simply assured of getting the best quality galvanized steel. The dedicated team at Tanya Galvanizers taking care of the hot dip galvanization process is adequately trained and vastly experienced so as to necessarily provider the users with the premium quality service. In an addition to this, the experts at Tanya Galvanizers has the required skillset as well as the expertise to make sure the overall process of hot dip galvanization of steel with zinc is carried out smoothly in the best possible way without any kinds of interruptions or problems. So, at any point of time, you are in need of hot dip galvanization services, do not look any further and come to Tanya Galvanizers for getting exactly what you are looking forward to.