Benefits of Hot Dip Galvanization

Hot dip galvanization is actually a form of galvanization which involves the coating of iron and steel products with the help of zinc. This process basically alloys with the base metal’s surface at the time when the metal is dipped in a bath of molten zinc with the temperature being at about 449 degrees Centigrade. Now, if you are looking forward to hot dip galvanizing services in Gujarat, you can get it easily since there are a number of services providers. But at this point of time, you need to make sure to choose a trusted, reputed and an experienced service provider. The process of hot dip galvanizing comes with a number of solid advantages which is why it is so much preferred.

  • Prevention of corrosion of the base metal is the ultimate benefit of hot dip galvanization which makes the utilisation of the base metal much more efficient. In an addition to this, hot dip galvanizing makes the base metal quite durable in nature thereby giving it a long life.
  • Hot dip galvanizing offers an extremely competitive first cost. This is because the overall cost of galvanising is much cheaper as compared to the application of other forms of coating. The process of galvanization is a completely mechanised one which takes place in a closely controlled process in a hot dip galvanizing factory.
  • Hot dip galvanizing comes with the lowest lifetime cost because the initial cost is quite low and apart from it, galvanizing lasts long. This is the reason as to why hot dip galvanizing is one of the most versatile as well as the most economical way of protecting the base metal.  Read more: https://www.galvanizers.co.in/blog/how-long-does-hot-dip-galvanized-metal-last/
  • This process is a completely reliable one since it is a simple, straightforward and at the same time a closely controlled one. The thickness of the coating so formed are regular and predictable as well.
  • Hot dip galvanization is a very quick and prompt process which takes only a few hours to be completed. On the other hand, any complicated system of painting might take up to week for completion. Therefore, hot dip galvanization saves a lot of time.

Related: The Importance Of Hot Dip Galvanizing

  • The coating so formed by the procedure gets metallurgically bonded with the base metal which is extremely beneficial and most importantly no other procedure has this feature.
  • This procedure involves the complete dipping of the base metal into molten zinc, thereby providing a complete coverage of coating which is highly advantageous.

Hot Dip Galvanization Service in Vadodara Gujarat-Tanya Galvanizers

So, now it is quite clear as to how important is hot dip galvanizing for the base metal and how it enhances the quality of life of the metal as well as its functionality to a great extent for making it more usable.

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Hot Dip Galvanizing Improves Steel – Here’s Proof

Hot dip galvanizing is the form of galvanization where steel and iron are coated with zinc. The zinc alloys with base of metal. This technique of galvanisation is highly practiced as it provides improvement of life and durable nature of steel.

It is highly beneficial if the products are to be used in corrosive environments. Hot-dip galvanizing dramatically improves the longevity and durability of steel. This is especially important in highly corrosive environments. Hot Galvanizing plants are dedicated to practicing this process.

At times, it happens that the natural weather conditions are as such which supports corrosion. At this point of time, it is quite important to protect against corrosion.  The hot dip galvanising services are quite essential for Crash barriers, Cable trays and earthing materials.

Metal Crash Barriers also called Highway Guardrails have become a necessity today. Road safety and security are of utmost importance and the metal crash barriers help in aiding it by absorbing the impact energy during accidents. It acts as an additional infrastructural support. It consists of W-beam, Post/spacer, end section and fasteners. Thus, hot dip galvanization for the W-beam, Post/spacer and fasteners are extremely important for safety as well as security. Both the W-beam and Post’s channel section use hot rolled sheets, 3mm 2.67mm thick and 5mm thick respectively. Both are hot dip galvanised according to the standards set by the regulating authority. In case of the fasteners the bolts, nuts and washers hot dip galvanization is required and most importantly this needs to be done in accordance to IS 1364 and IS 1367 of grade 4.6 MS.

The hot dip galvanizing services are also available for cable trays. These cable trays are used to give support to the electrical cables that are insulated and utilised in distributing power, communication and control in the electrical wiring of a building. Hot dip galvanizing is necessary in this regard as corrosion of these can lead to catastrophic results which clearly proves how important it is for the prevention of any kinds of disastrous results or outcomes.  Also, it aids in making it longer lasting and durable.

Hot Dip Galvanizing Services-Tanya Galvanizers

Similarly, for earthing strips, the services of hot dip galvanization. Earthing is conducted to connect the metallic parts of electric machines and equipment to the earth plate or earth electrode with use of thick wire that is conductive. Earthing is done to avert dangers due to discharge of electric energy.  Providing hot-dip galvanization for these strips helps ensure appropriate effective efficient and safety in the working of the machines of the industry.

It is extremely important to follow the proper practices of preparation of metal before galvanization is done. The metal is cleaned to remove all contaminants using caustic chemicals and then rinsed followed by further treatment through pickling.

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How To Prepare Hot Dip Galvanized Steel For Powder Coating-Tanya Galvanizers

How To Prepare Hot Dip Galvanized Steel For Powder Coating

The galvanization of steel is a process in which a protective layer of zinc is applied to the steel to make it more durable. One of the popular methods of this galvanizing is hot dip galvanizing, where the steel is dipped into a hot molten zinc. This process has been used for years to protect steel from corrosion and there are many companies who offer hot dip galvanizing services.

However, these hot dip galvanizing services have emerged into the more advanced duplex system. This is basically the way of powder coating the steel after hot dip galvanization. The moment paint and galvanized steel are infused together, the corrosion control becomes stronger thereby protecting the base steel by providing a barrier along with a cathodic protection. Moreover, galvanization prevents the development of iron-oxide, preventing the paint to blister and peel off faster. The paint also slows down the rate of zinc damage.

Characteristics of Coating

It’s important to know the characteristics of steel after galvanizing. It starts to react the moment it’s out of the molten zinc. So, it depends on the environment. Based on this situation galvanized steel is divided into three parts. Newly galvanized, partially weathered and fully weathered. Each of this requires duplex coating, but slightly different from the other, because of the surface material and different characteristics of galvanized steel.

Preparing Hot Dip Galvanized Steel for Powder Coating

The preparation of the hot dip galvanized steel for powder coating or painting involves two steps which are as follows.

Cleaning: The cleaning is done to remove the dirt from the surface. However, it’s important to do this task carefully, because highly acidic or even basic cleaning sometimes scrapes off the zinc from the surface. There are a few types of cleaning methods, like

  • Ammonia cleaning -This is used to clean the parts with ash residue that are left behind because of galvanizing.
  • Alkaline cleaning – Oil, grease and dirt can be removed with this alkaline solution cleaning.
  • Solvent cleaning – Cleans all the volatile compounds.

 

Profiling: To provide a good adhesion to for the paint, it requires the galvanized steel surface to be slightly roughened or ridged.

These two things are to be done perfectly, only then the powder-coat or the paint will stick to the steel. There are 4 types of the profiling method-

  • Abrasive sweep or brush blast – To roughen the galvanized surface this method is used.
  • Acrylic passivation – This method is used to passivate the galvanized surface.
  • Conversion coating – Enhances the durability and adherence of the paint.
  • Paint formulations – This is an alkyd formulation used as the paint.

The galvanizing of steel is an advanced way to make the steel durable and strong. With the advanced method of powder coating or painting, this process has become more advantageous for a long-lasting use.

Inspecting a Hot Dip Galvanizing Structures-Tanya Galvanizers

Inspecting a Hot Dip Galvanizing Structures

The continuous change in the atmospheric condition has given a steep rise to the corrosive action of nature. In such a calamity humans have created galvanized structure to fight the corrosion against their creation. In spite of the effort to keep their creation safe by process of galvanization success is not always fruitful. The main reason for such failure can be summarized under the poor quality of the galvanized structure. To ensure safety and long lasting galvanized structures it is important a thorough inspection is done on the creation. To achieve such durability in a hot dip galvanized structure an inspecting team must keep in mind the following layouts:

1. Appearance

  • Cooling rate: To ensure a durable hot dip galvanized structure, the cooling rate of the product must be above 550F with compression and metallurgical reaction between Iron and Zinc in the solid state. This will ensure uniformity in the colour.

  • Steel Processing: The usage of steel in process of fabrication ensures appearance to be both dull and bright, further inter-metallic formation is created due stresses exerted on the steel during the process. This ensures the protection against corrosive agent stays intact making the structure durable.

2. Surface and Condition:

  • Bare Spots: This generally takes places due to welding slag and rusting on the surface. To avoid bare spot one must ensure the surface area was properly cleaned before the process of galvanization after pre-treatment. In case of high amount bare spots the entire length of the subject must be stripped and re-galvanized.

  • Chain and Wire Marks: During process of transportation chain and wire marks does takes place on the structure. If this results in exposing of the base steel structure, it is important to re-galvanize the area of the structure for better lasting.

  • Clogged holes and Threads: The clogged holes are effect of viscous zinc packed in holes below 3mm. This can be avoided by making the holes larger in size, and if 3mm requirement holes clogged by zinc are utility then they must be centrifuge above 500 Fahrenheit. Similarly in case of clogged thread that is the effect of poor drainage, the same principle is to be applied.

Hot Dip Galvanizing Services-Tanya Galvanizers

3. De-lamination and Peeling: This is usually a coating of Iron and Zinc above the galvanized steel structure that creates a gap between the two layers; it takes places because structures takes a long time to cool down even after brought out from the galvanizing kettle. If peeling the coat meets the required specification of galvanization can be used for further structural demonstration or can be re-galvanized as per requirement. De-lamination usually due to effect of blasting is not the responsibility of the galvanizer.

4. Excess Aluminium in Bath: In case of the process of galvanization Zinc is the major liquid with 98% the rest 2% used is majorly Aluminium – “discretion of galvanizer” as such it creates black mark on the structure. If the spots are visible and small it can be removed. However for huge load the structure must be re-galvanized.

Related: Hot Dip Galvanizing Process | Tanya Galvanizers

These major points during the process of inspection if taken care of, will create a strong galvanized structure for utility purposes.

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Hot Dip Galvanizing Structures After Fabrication-Tanya Galvanizers

Hot Dip Galvanizing Structures After Fabrication

The continuous change in the world’s environment has created a steady rise in the process of corrosion against almost every man made structure across the globe. In such a scenario galvanized structures. i.e. “steel and other materials” are the best resolution to fight against corrosion and other corrosive agents.

In most scenarios’ hot dip of galvanized steel structures are done after the process of fabrication. However, in order to allocate a successful hot dip on fabricated steel structure the organizations providing hot dip galvanized services should take into consideration the following major factors:

  • In order to properly complete hot dip galvanization organization must avoid narrows gap between the plates that has been laid for the process.
  • One should also take a close look that no surfaces are overlapped during the process of hot dip galvanization.
  • Taking proper measures to ensure that no overlapping took place in case of angles when placed back to back and even in case of the channels.
  • While hot dipping fabricated steel it is important to ensure that the gap between the contacting surface and structure should not be more than 2.4mm. This will allow cleaning solution to enter the structure but the entry of zinc can be completely avoided as zinc is harmful for the steel structure during the process of hot dip galvanization.
  • To attain a successful hot dip galvanization process for steel structure it is important that all the welding, are completely sealed and even a opening for a pin is not left over to ensure that no explosion takes places during the process, as trapped air in the structure can give rise to explosion during the process of galvanization.

Hot Dip Galvanizing Services-Tanya Galvanizers

These important points should always be taken care of while hot dipping a fabricated structure for the process of galvanization. Further, it is suggestible to create sub-assemblies and assemblies for progressive dip because this would allow the structure to be submerge in a single go creating a uniform expansion and contraction.

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Guidelines While Welding Galvanized Steel-Tanya Galvanizers

Guidelines While Welding Galvanized Steel

Hot dip galvanizing process is being used to safeguard iron & steel from getting rusted for centuries. It is actually a zinc coating over steel. Similar to paint, it safeguards steel from rusting. This is achieved by forming a barrier between the environment and the steel. However, galvanizing does take a giant step when compared to pain. It offers electrochemical protection to steel. As zinc is found to be electrochemically reactive when compared to steel, the galvanizing coating can prevent steel from getting rusted. Therefore, galvanized steel is considered to be a much superior product when compared to steel being provided with other coating types on it. Even if the coating gets damaged in service or while handling, it safeguards the steel. We provide hot dip galvanizing services at an affordable price. For more details call: 91 8000842648

Galvanized product welding

Welding is done on galvanized steel similar to welding bare steel of similar composition. With some modification, similar welding process, travel speed, amps, volts, etc. could be used, if the switch is created from uncoated steel to that of galvanized steel. This is until zinc coating is found to be unusually thick. It is important to consider the importance of hot dip galvanizing.

Difference between welding uncoated steel and welding galvanized steel is due to low vaporization temperature resulting from zinc coating. It is at 900 F that zinc melts and vaporizes at 1650 F. With steel melting at 2750 F & welding arc temperature being 15000 – 20000 F, zinc close to the weld vaporizes. Zinc is just gone as weld pool freezes.

Hot Dip Galvanizing Services by Prashant Galvanizers:
Cable Trays | Race Ways | Crash Barrier | Earthing Strip Cable

 

Why galvanizing is not done after welding?

The question why not galvanize after fabrication and avoid the problem. Steel products are galvanized always after fabrication since no practical way is present to restore galvanizing effectiveness after welding. It is routinely that galvanizing after fabrication needs to be performed very carefully. Fabrication is to be cleaned with acid, which again is to be neutralized. Then the fabrication is to be immersed in liquid zinc pot at 900 F. Great care is to be taken to ensure that when fabrication is lowered into zinc, it is dry. This is because, trapped water may flash to steam, thus exploding zinc everywhere. Zinc easily flows out and into every nook and corner for achieving complete coverage. It is quite tough if tubes are used for creating fabrication, as tubes are to be open on both its sides to allow proper flow of zinc. Trying to achieve uniform coverage even with the simplest fabrication could prove to be difficult.

Finally, the fabricated product is to be fit properly into the molten zinc pot, which again can be a tough challenge especially by having large structures. It is much easier to galvanize sheets, plates, structural shapes, wires and tubes, prior to creating them into products. This is because they have simple shapes, without any crannies or nooks, no place to trap water or any hidden cavities.

We offer hot dip galvanizing services to Power Plants, Cooling Towers Manufacturers, Railways, Refinery Projects, Fertilizer Industries, Cement Factories, Petrochemical Projects and Large Scale of Industrial Units.

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

The Importance Of Hot Dip Galvanizing- Tanya Galvanizers in Gujarat

The Importance Of Hot Dip Galvanizing

These days, there have emerged numerous companies that has been offering top quality hot dip galvanizing services at affordable rates to its clients. One should not compromise on the quality aspect for price. But before trying to avail such services, it will be first necessary to have a clear understanding why galvanizing is considered to be important and required in the first place. Only then can the best services be availed that can prove to be useful and worth the investment made.

About Galvanization

It is considered to be a process to apply protective zinc coating over metals like iron or steel for avoiding premature corrosion and rust. Galvanized steel’s proponents are known to us this method for repairing or to construct steel structures. For instance, they can benefit immensely from lower repair and maintenance costs associated with it due to its special properties.

Need for protection

Without provide adequate protection, it is quite natural for steel to rust quickly because of atmospheric conditions that it faces with time. Again, the degree of rust is likely to depend upon the environment in which the product is present. Rust is regarded to be iron oxide (which is typically red oxide). It is formed with the oxidation and reduction reaction of oxygen and iron, with the presence of air moisture or water.

Although there are present several protective methods to be followed like plastic coating or painting, these methods tend to have their own drawbacks. If damaged, the steel sections are likely to become rusty, thus causing the protective coating to fall away, thereby making such protection types to be unreliable and non-lasting (always require continued maintenance).

Why use hot dip galvanizing of earthing materials?

Hot dip galvanization according to the industry experts is considered to be a wonderful and time proven method to protect steel materials. All material surfaces with this type are dipped into and then coated with molten zinc completely.

Zinc is said to face slow corrosion, thus providing it with extended life as it safeguards the base metal. With zinc being alloyed to iron, there occurs cathodic protection. It does ensure that the smaller steel areas which are exposed due to damaged do not get compromised by rust. The small damaged areas unlike that of organic coatings do not require touch up. Cathodic protection is sure to last for a long time until there is present zinc layer.

Special care is to be taken if the project needs contact between brass or copper and any galvanized material. It is deemed so in humid or moist environment, since there occurs rapid corrosion of zinc. Water running from brass or copper surface may have sufficient dissolved copper within, thus causing corrosion quickly. In case, it applies to the specific situation, then it can be prevented by ensuring flow of water to copper or brass parts from galvanized materials.

Benefits of galvanizing of sub station structures

There are several benefits to be gained through galvanizing, some of which are given below:

  • Low long term cost and less maintenance
  • Lower cost when compared to stainless
  • Longer life expectancy
  • Coating performance and longevity reliable
  • Protection offered to smaller steel areas exposed due to damage
  • Outstanding resistance offered to mechanical damage
  • Zero lost time with surface inspection, preparation and painting
  • Other types of coating will not offer similar protection

Read more: Sub-Station Structures

Keeping the above benefits in mind, galvanizing is indeed worth the try and effort and a great investment.

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Phone: (0265) 2632517 (O) / +91 8000842648

 

Batch Galvanized Vs Pre-galvanized Products-Applications and benefits

Batch Galvanized Vs Pre-galvanized Products | Applications and benefits

There is a common misconception among many that any type of zinc coating is termed as galvanizing. However, the truth is there are present various processes through which application of zinc coating is possible. HDG or hot dip galvanizing tends to refer to those coatings which are created through immersion of steelwork into zinc in molten form. Two variations are present of HDG process, namely, Pre-galvanizing and Batch Galvanizing.

About Batch Hot Dip Galvanizing

It is a process that is generally used for coating completely fabricated articles. Chemical cleaning is involved of work before immersing in galvanizing bath, specified with EN ISO 1461. The process given below offers full coverage including hollow section internal surfaces without the presence of any uncoated area. Highest corrosion protection level is also offered with the formation of thick coating.

Pregalvanized Steel product

The alternative available will be to take specific product like tubes, wires or sheet and use an automated process to galvanize them.

Pregalvanized Steel Sheet

It is considered to be among the most used of all pregalvanized products, specified with EN 10346. The sheet is uncoiled to be passed through reducing atmosphere before it gets immersed for short time period in galvanizing bath. On withdrawing it from galvanizing bath, there is used a mechanical wiper or air knife for eliminating excess zinc, to produce excellent surface finish. However, the result derived is thin coating varying between 7 and 42 μm depending upon the grade and most products having typical coating thickness of about 20 μm. Once galvanizing is completed, the sheet gets recoiled before the stockholder. It is uncoiled and then cut down for sale to produce uncoated edges.

Pre-galvanized Steel Tubes

Using automated procedure to EN 10240, it is possible to galvanize tubes. Here, immersion times re much shorter and on withdrawal, the tube bore may be blown down by steam to provide adequate surface finish. Coating thickness could be high by about 45-55 μm, even though most of the produced products may have significant thinner coating of about 20 to 30 μm. The tubes can be cut again for resale purpose to size to create uncoated edges.

Pre-galvanized Wire

Wire strands, from practical view point may be coated just using automated process, specified with EN 10244-2. If wiping procedures are used, then there will be shorter immersion times to eliminate excess zinc present and to achieve smooth finish. Again, coating thickness could vary with strand diameter and grade. However, it will be typically around 20 to 30 μm. Although it is not possible to galvanize individual strands to EN-ISO 1461, for such processing mesh can be found suitable for achieving thicker galvanized coating.

Coating comparison

It is essential to understand that both pregalvanized and hot dip galvanizing coatings tend to come with different characteristics. Also, as coating weights get specified for the steel sheet, weights tend to include the sheet’s both sides to ensure that coating life becomes half for equivalent coating weight that is specified within EN 10346.

Choose Tanya Galvanizers for all galvanizing needs

Those interested to get superior quality galvanizing can check out the different types of services offered by ‘Tanya Galvanizers’, the leading company in the domain. They are considered to be cost effective and known not to compromise on the quality aspect. They are completely reliable and can be trusted upon for providing the best and cost effective galvanizing solutions as and when required.

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

What Are The Reasons There Could Be Defects In Galvanizing-Tanya Galvanizers

What Are The Reasons There Could Be Defects In Galvanizing?

Some common defects may arise during hot dip galvanizing process. There are several reasons for the causes of such variations and defects to take place.

Galvanized Coatings: Some defects

  • Ungalvanized weld areas: The weld areas may have some coating misses which could be due to welding shag being present on the welds. The fabricator is required to remove the welding slag before it is delivered to the galvanizer.

  • Mottled or dull gray coatings: Thicker galvanized coatings will be generated by reactive steels which are dull when compared to standard coatings. Such coatings tend to have longer life due to their greater thickness. Moreover, their appearance is steel metallurgy’s function, which is beyond the galvanizer’s control.

  • Dark stains present adjacent to welds: Unsealed overlaps may witness preparation chemicals entering them or poor quality welds simply boil from connection during the galvanizing process. This will only cause coating misses and surface contamination during galvanizing. Moreover, anhydrous fluxing salts remaining within the connection are likely to absorb atmospheric moisture, while leaching onto adjacent galvanized surface. Such salt leaching will each eventually the equilibrium. It is necessary to clean wash the affected areas for removing those slight corrosive leachate.

  • Inclusions/Dross Pimples: During galvanizing process, dross is generated as zinc iron crystals or in the form in higher melting point when compared to metal in zinc bath. Galvanized coating experiences trapped dross which gives out that gritty or rough appearance to the coating. Dross inclusion presence in coatings will not be found to be detrimental to performance of the coating, since zinc dross resistance is identical, similar to that of galvanized coating.

  • Ash staining: During the galvanizing process, there is formation of zinc ash, since it is in zinc that the work gets immersed. The ash that is generated gets skimmed off the molten zinc surface before withdrawal of the work from galvanizing bath. At times, ash can be found to be trapped within the inaccessible areas, while sticking to the external part of the coating, when the bath is exited by the work. A light brown or dull surface stain is left by ash after removal. However, the galvanized coating performance is not affected in any manner.

  • White storage staining: Once galvanizing is completed, the items stacked or stored in poorly ventilated, wet conditions will become white bulky zinc hydroxide deposits upon the galvanized coating surface due to atmospheric moisture reaction.

  • General surface irregularities and striations: Lines thicker than adjacent galvanized coating and ridges may appear due to varying zinc reaction with steel surface. This is more due to the stress areas upon the steel surface or probably the welds presence or weld metal that is modified metallurgy into parent metal. It is regarded to be a common phenomenon faced with tube and pipe products. However, coating performance is not affected in any manner.

  • Bare patches: The uncoated areas of the galvanized work surface are because of inadequate pretreatment in pickling, degreasing, pre-fluxing and poor surface preparation. It is necessary to get the areas repaired by making use of recommend repair procedure or regalvanize the item, if defect is found of sufficient size.

  • Puddling, drainage spikes and runs: They are termed to be unavoidable defects in general item hot dip galvanizing process. They are acceptable unless the function assembly of the item is not affected or safety hazard present in service or handling.

The above are stated to be the few of the reasons for defects to appear in galvanizing and amazing solutions to it.

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What Are The Different Types Of Galvanizing-Tanya Galvanizers

What Are The Different Types Of Galvanizing?

Galvanizing is termed to be among the most widely utilized methods to safeguard metal from corrosion. This method tends to involve applying zinc in thin coating to thick base metal, to help shield the same from surrounding environment. A good number of lamp posts and street signs can be found to have silver color upon them. This silver is stated to be actually zinc coating.

Why Galvanizing?

Having a metal galvanized provides it with anti-corrosion properties. Without using protective zinc coating, metal would be remain exposed to the different elements and oxidize as well as corrode quickly. As a matter of fact, galvanized steel can prove to be cost effective solution when compared to using materials like aluminum or austenitic stainless steel for preventing corrosion. Hot dip galvanizing services in Vadodara offered by the reputed providers can help the organization to stay ahead in competition.

Know the different galvanizing methods

Several processes are involved for galvanizing metal, which are given below:

    • Hot dip galvanizing: Like the name suggestions, this particular tends to involve the base metal getting dipped into molten zinc pool. Initially, the base metal is to be cleaned chemically, manually or probably both for assuring good quality bond that can be achieved between zinc coating and base metal. After getting cleaned, base metal gets fluxed for eliminating residual oxides present after completion of the cleaning process. base metal gets dipped into heated zinc liquid bath to form metallurgical bond. The benefit derived from this specific method is considered to be economical and can be quickly performed to complex shapes. But final coating is stated to be inconsistent and relative to the other processes of galvanizing.

Related: Hot Dip Galvanizing Process | Tanya Galvanizers

    • Electro Galvanizing: This type is said not to make use of molten zinc bath. Rather, the process uses electrical current within an electrolyte solution for transferring the zinc ions into base metal. It involves the electrically reducing zinc ions that are positively charged into zinc metal that gets deposited onto positively charged material. also can be included grain refiners to ensure steel getting smooth zinc coating. This method is applied typically to sheet metal roll. The benefits to be derived from it are precise coating thickness and uniform coating. But the coating may be thinner than zinc coating that is achieved through hot dip galvanizing process, thus resulting in diminished corrosion protection.

Take a look at our blog for Difference Between Hot Dip Galvanizing And Electro-Galvanization

  • Pre-galvanizing: It is a method that is found to be quite similar to that of hot dip galvanizing. However, it is at a steel mill that it gets performed, typically on materials, which have already a particular shape. This method involves metal sheet being rolled through a cleaning process, which is similar to hot dip galvanizing procedure. Then, this metal is passed through pool of liquid hot zinc to be recoiled. A major benefit derived from this particular method is that steel sheet in large coils could be galvanized within a short span of time having more uniform coating, unlike that of hot dip galvanizing. However, the cons are that after pre-galvanized metal fabrication takes place, the uncoated, exposed areas become present. It effectively means, when long sheet coil is cut to small sizes, its edges where metal gets cut remains exposed.

Reputed providers like Galvanizers have their certified hot dip galvanizing plant from where they produce different types of galvanized products like cable trays, crash barrier, race ways, earthing strips, earthing materials, sub-station structures and much more.

Get in touch with us call: (0265) 2632517 (O), Mobile : +91 8000842648