Surface treating agent for galvanized steel sheet, preparation method of surface treating agent, self-lubricating galvanized steel sheet, and preparation method of steel sheet

A technology of surface treatment agent and galvanized steel plate, which is applied in the preparation of steel plate, self-lubricating galvanized steel plate, preparation of surface treatment agent, surface treatment agent for galvanized steel plate, and can solve the problems of accelerated film formation and inapplicability, etc. Achieve the effects of reducing solderability, improving matching, and reducing costs

Active Publication Date: 2021-02-26
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent is a chromium-free passivation technology, which cannot be applied to steel for automobile bodies, which is completely different from the purpose of this technology. At the same time, the use of nickel sulfamate is to use the accelerated film-forming effect of nickel salts

Method used

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  • Surface treating agent for galvanized steel sheet, preparation method of surface treating agent, self-lubricating galvanized steel sheet, and preparation method of steel sheet
  • Surface treating agent for galvanized steel sheet, preparation method of surface treating agent, self-lubricating galvanized steel sheet, and preparation method of steel sheet
  • Surface treating agent for galvanized steel sheet, preparation method of surface treating agent, self-lubricating galvanized steel sheet, and preparation method of steel sheet

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Embodiment Construction

[0055] In order to illustrate the present invention in depth, the present invention is described in detail in conjunction with various examples and comparative examples.

[0056] In a specific embodiment, the solution preparation process of the surface treatment agent is:

[0057] (1) According to Mn 2+ content requirements, calculate Mn(H 2 PO 4 ) 2 4H 2 O requirement, and dissolved in deionized water.

[0058] (2) According to Ni 2+ content requirements, calculate Ni(NH 2 SO 3 ) 2 4H 2 O requirement, and dissolved in deionized water.

[0059] (3) Polyvinylpyrrolidone is dissolved in 10 times the mass of deionized water.

[0060] (4) Mix the three solutions, add deionized water to the target volume, add H 3 PO 4 Adjust pH to target value.

[0061] Table 1 is the surface treatment agent formulations of Examples 1-3 and Comparative Examples 1-2.

[0062] Table 1 surface treatment agent components

[0063] Substrate mn 2+ (mol / L)

Ni 2+ (mol / L...

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Abstract

The invention discloses a surface treating agent for a galvanized steel sheet, a preparation method of the surface treating agent, a self-lubricating galvanized steel sheet, and a preparation method of the steel sheet, and belongs to the field of surface treating agents. The surface treating agent is mainly prepared from the following components: 0.01 mol/L to 0.10 mol/L of Mn<2+>, 0.001 mol/L to0.020 mol/L of Ni<2+>, 0.002 mol/L to 0.040 mol/L of NH2SO3<->, 0.02 mol/L to 0.24 mol/L of PO4<3->, 0.1 g/L to 0.5 g/L of polyvinylpyrrolidone, and the balance water, wherein the pH value of the surface treating agent is 1.5 to 4.0. The preparation method of the surface treating agent comprises the following steps: dissolving Mn(H2PO4)2.4H2O, Ni(NH2SO3)2.4H2O and polyvinylpyrrolidone in water, uniformly mixing, and adjusting the pH value by using H3PO4. The self-lubricating galvanized steel sheet sequentially comprises a galvanized layer, a lubricating film and an antirust layer, the galvanized layer is a pure zinc layer, and the lubricating film is formed by forming a film through the surface treating agent. According to the invention, stripping of the zinc layer on the surface of the steel sheet is reduced, meanwhile, the steel sheet has good phosphatization performance, and the adhesive performance is not reduced.

Description

technical field [0001] The invention belongs to the field of surface treatment agents, and more specifically relates to a surface treatment agent for galvanized steel sheets, a preparation method for the surface treatment agent, and a self-lubricating galvanized steel sheet and a preparation method for steel sheets. Background technique [0002] Galvanized steel sheets are widely used in the automotive industry due to their excellent corrosion resistance. During the forming process of galvanized steel sheet, friction occurs between the softer zinc layer and the mold, which can easily cause the zinc layer to fall off, and form zinc powder accumulation on the mold, which will cause damage to the surface of the part during the subsequent stamping process. Since auto parts, especially outer coverings such as doors and hoods, have extremely high requirements on the appearance quality of the coating, damage to the surface of the parts is not allowed. Therefore, it is necessary to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/18
CPCC23C22/18
Inventor 李子涛刘永刚崔磊葛浩刘珂詹华单梅王辉计遥遥张军王伟峰代朋虎
Owner MAANSHAN IRON & STEEL CO LTD
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