Surface treatment method for environment-friendly chromium-free zirconium-containing electro-galvanized fingerprint resistant steel sheet

A technology of surface treatment and electro-galvanized sheet, which is applied in the direction of coating, etc., can solve the problems of zinc mist generation, affecting the life of welding parts, and harmful to human body, so as to reduce the voltage of the tank, reduce the chance of strip steel scratching the anode, and reduce power consumption Reduced effect

Inactive Publication Date: 2006-04-26
JIANGYIN CHANGFA FINGERPRINT RESISTANT STEEL PLATE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] European patent application EP156437A1 discloses a "water-based coating, method of coating metal substrate and obtained metal substrate", which uses a binder + at least 2 lubricants, at least one of which is an inorganic coating containing zinc powder. The steel plate obtained by this method can improve the electrical conductivity, but zinc mist is produced during welding, which is harmful to the human body and affects the life of the welded part
In addition, the European patent application EP780452A2 discloses a "water-based coating", which directly uses epoxy-modified acrylic resin as a film-forming agent, but the coating is used for containers and uses post-coating. For those that require pre-coating Electro-galvanized steel coils are not applicable

Method used

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  • Surface treatment method for environment-friendly chromium-free zirconium-containing electro-galvanized fingerprint resistant steel sheet
  • Surface treatment method for environment-friendly chromium-free zirconium-containing electro-galvanized fingerprint resistant steel sheet
  • Surface treatment method for environment-friendly chromium-free zirconium-containing electro-galvanized fingerprint resistant steel sheet

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Step 1. Prepare materials

[0041] 1. Substrate: cold rolled plate

[0042] 2. Plating solution: zinc sulfate

[0043] 3. Coating composition: Take 750kg of acrylic resin, 40kg of silicon dioxide, 90kg of silane bonding agent, 80kg of polytetrafluoroethylene, 5kg of metal zirconium ion and 35kg of polyethylene wax, put them in a mixer, stir and mix evenly to make chromium-free Zirconium anti-fingerprint paint.

[0044] Step 2, using an acidic vertical insoluble anodic electro-galvanizing process to produce an electro-galvanized sheet, forming a uniform and delicate zinc layer on the surface of the cold-rolled sheet.

[0045] Plating tank structure see figure 1 , the present invention adopts 4 identical plating tanks altogether, and each plating tank 5 contains two pairs of anode boxes 4 altogether, and totally 40 fritters are coated with IrO 2 Anode plate.

[0046] The anode box 4 in the plating tank 5 is vertically arranged, and the strip steel 1 is also vertical....

Embodiment 2

[0058] The difference between embodiment 2 and embodiment 1 lies in the coating composition: get acrylic resin 500kg, silicon dioxide 100kg, silane bonding agent 200kg, polytetrafluoroethylene 100kg, metal zirconium ion 15kg, polyethylene wax 85kg and place in a stirring In the container, stir and mix evenly to make chrome-free zirconium-containing anti-fingerprint paint. The rest are the same as example 1.

Embodiment 3

[0060] The difference between embodiment 3 and embodiment 1 lies in the coating composition: get acrylic resin 600kg, silicon dioxide 100kg, silane bonding agent 90kg, polytetrafluoroethylene 100kg, metal zirconium ion 10kg, polyethylene wax 100kg and place in a stirring In the container, stir and mix evenly to make chrome-free zirconium-containing anti-fingerprint paint. The rest are the same as example 1.

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Abstract

The present invention relates to surface treatment of steel plate, and is especially zinc electroplating process to form homogeneous fine zinc layer onto the surface of cold rolled steel plate and environment friendly zirconium-containing no-chromium fingerprint resisting paint for producing zinc electroplating fingerprint resisting steel plate. Cold rolled steel plate is first electroplated with zinc and then coated with fingerprint resisting paint. The production process of fingerprint resisting steel plate features the production process including the first production of zinc electroplated steel plate via vertical anode electroplating process, coating with water-base fingerprint resisting paint with zirconium to replace chromium, and curing through roasting at temperature lower than 125 deg.c to form composite resin film. The electroplated zinc layer has stable and reliable quality and the organic composite resin film has no environmental pollution.

Description

Technical field: [0001] The invention relates to a surface treatment method of an environment-friendly chromium-free zirconium-containing electro-galvanized anti-fingerprint steel plate. It specifically relates to an electro-galvanizing process method for forming a uniform and fine zinc layer on the surface of a cold-rolled steel plate, and an environment-friendly chrome-free zirconium-containing anti-fingerprint coating for manufacturing an electro-galvanized anti-fingerprint steel plate. Background technique: [0002] The anti-fingerprint steel plate is a high value-added product that uses a cold-rolled plate as the substrate after electrogalvanizing, and then coats a 1-3 μm thick organic composite resin film on the surface of the plate. Fingerprint-resistant steel products have a beautiful appearance, [0003] High corrosion resistance, excellent fingerprint resistance, good electrical conductivity, blackening resistance, scratch resistance, high chemical stability; the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/22C09D5/00C09D123/10C25D7/06
Inventor 郭铁波卢熙连南红梅王荣海王劲木朱洪成霍东英
Owner JIANGYIN CHANGFA FINGERPRINT RESISTANT STEEL PLATE
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