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Hot Dipped Galvanized Steel Coil video

Hot Dipped Galvanized Steel Coil

Width: 750-1250mm
Thickness: 0.13-1.5mm
Zinc layer: Z20-Z275
Surface treatment: Zinc
Customization: Support customization
Zinc flakes: Regular/small/zero zinc flakes

Description

Electrogalvanizing, also known as cold galvanizing, is the process of forming a uniform, dense, and well bonded zinc coating on the surface of a work piece using the principle of electrolysis.

 

Classification of Electrogalvanizing

1. Cyanide zinc plating

After using this process for electroplating, the product quality is good, especially for color plating, which maintains good color after passivation.

2. Zinc salt zinc plating

This process evolved from cyanide zinc plating. By using this process, the lattice structure of the coating is columnar, with good corrosion resistance, and is suitable for color zinc plating.

3. Chloride zinc plating

This process is widely used in the electroplating industry, accounting for up to 40% of the total.

4. Sulfate zinc plating

This process is suitable for continuous plating (wire, strip, simple, coarse and large parts, components). Low cost.

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The role of electrogalvanizing

1. Good corrosion resistance, fine and uniform combination, and not easily penetrated by corrosive gases or liquids.

2. Due to the purity of the new layer, it is not easily corroded in acidic or alkaline environments. Long term effective protection of steel body.

3. After chromate passivation, it forms various colors for use, which can be selected according to customer preferences. Galvanizing is aesthetically pleasing and decorative.

4. Zinc coating has good ductility and will not easily fall off during various bending, handling, impact, etc.

 

process flow

1. Electroplating pretreatment

Pre electroplating treatment is the foundation for electroplating and the key to ensuring product quality.

2. Electroplating process control

For different products, the expected service life of the electroplating layer thickness should be determined based on the specific environment used (temperature, humidity, rainfall, atmospheric composition, etc.). Blindly thickening can cause various waste. However, if the thickness is insufficient, it will not meet the expected service life requirements.

3. Post plating treatment

Post electroplating treatment (passivation, hot melting, sealing, and hydrogen removal) is carried out to enhance the protective performance, decorative properties, and other special purposes of the plated parts.

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The difference between electrogalvanizing and hot-dip galvanizing

1. The two principles are different

Electrogalvanizing is the process of attaching a zinc coating to the surface of steel through electrochemical methods, while hot-dip galvanizing is the process of immersing steel in zinc solution, resulting in a zinc coating on the surface of the steel.

2. There is a difference in appearance between the two

If the steel is electroplated, its surface is relatively smooth. If the steel is hot-dip galvanized, its surface is relatively rough.

3. Different application ranges

Hot dip galvanizing is commonly used in outdoor steel such as highway fences, while electro galvanizing is commonly used in indoor steel such as panels.

 

Application

1. In the automotive industry, many internal parts are used;

2. In the electronics industry, headphones are often used, and some screws are also used;

3. Construction engineering mainly involves pipes, sheets, and many screws;

4. Household appliances, internal parts of household appliances, bicycles, locks, kitchens, etc;

5. There are also many applications in engineering machinery and industry, such as screws and nuts, electric tools, wrench pliers;

6. Protect and repair processed galvanized sheets, structural steel, steel roofs, doors and windows, ship equipment severely corroded by seawater, public equipment, various facilities in metallurgical plants, water treatment plants, paper mills, etc.

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RFQ

Q: What can I buy from you?

A: We produce stainless steel, aluminum, color coated galvanized steel, profile steel, etc. You can contact us for any steel you need.

 

Q: Can I customize the size I want?

A: Of course, we support customized production, customized sizes, customized logos, etc., all of which are acceptable.

 

Q: What is the general payment method?

A: Generally speaking, we make payment by TT, with a 30% advance payment deposit and a 70% final payment to be settled upon receipt of a copy of the bill of lading.

 

Q: Can you accept me sending someone to the factory?

A: Of course, we are always welcome.

 

Q: What are the drawbacks of electrogalvanizing?

A: Its anti-corrosion ability will be lower than that of hot-dip galvanizing.

 

Q: Can I have the material list?

A: Yes, we have a material list for each batch of goods, which comes with the goods.

 

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