Slag-free low-temperature rapid electrolytic phosphorizing liquid and phosphorizing process thereof

An electrolytic phosphating solution and electrolytic phosphating technology, applied in the field of electrolytic phosphating solution, can solve the problems affecting the stability of the solution and producing solid waste residue, and achieve the effects of meeting the requirements of industrial production, preventing pollution and reducing consumption

Active Publication Date: 2012-10-10
派诺(湖北)绿色化学智造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the selection of zinc or iron as the anode, zinc or iron dissolves into the treatment bath during the electrolysis process, an...

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  • Slag-free low-temperature rapid electrolytic phosphorizing liquid and phosphorizing process thereof

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Embodiment 1

[0031] A slag-free low-temperature rapid electrolytic phosphating solution and phosphating process, including zinc ions 10g / L, calcium ions 2g / L, phosphate 10g / L, nitrate 40g / L, nitroguanidine 2g / L and nickel 0.1g / L, for 70# steel wire with a wire diameter of 3.0mm, the phosphating temperature is 45°C, the phosphating time is 120 seconds, and the current density is 3A / dm 2 , the film weight after phosphating is 4g / m 2 , the phosphating film is complete, and the color is gray and black.

Embodiment 2

[0033] A slag-free low-temperature rapid electrolytic phosphating solution and phosphating process, including zinc ions 30g / L, calcium ions 2g / L, phosphate 60g / L, nitrate 90g / L, hydroxylamine sulfate 5g / L, chlorate 2g / L L and nickel 1g / L, used for 70# steel wire with a wire diameter of 3.0mm, phosphating temperature 45°C, phosphating 60 seconds, current density 5A / dm 2 , the film weight after phosphating is 10g / m 2 , the phosphating film is complete, and the color is black.

Embodiment 3

[0035] A slag-free low-temperature rapid electrolytic phosphating solution, containing zinc ions 80 / L, phosphate 120g / L, nitrate 150g / L, hydroxylamine sulfate 10g / L, citric acid 5g / L, nickel 3g / L and magnesium 7g / L L, for 70# steel wire with a wire diameter of 3.0mm, the temperature of the phosphating solution is 45°C, phosphating for 5 seconds, and the current density is 20A / dm 2 , the film weight after phosphating is 14.7g / m 2 , the phosphating film is complete, and the color is gray and black.

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Abstract

The invention provides slag-free low-temperature rapid electrolytic phosphorizing liquid and a phosphorizing process thereof. The phosphorizing liquid comprises, by mass, zinc ions 10-80g/L, phosphate radicals 10-120g/L, accelerators 41-160g/L, organic acid 0-5g/L and dissolved metal elements 0.1-10g/L, wherein the phosphate radicals refer to P2O5. According to the process, inert titanium plates or titanium nets serve as anodes while treated steel wire rods serve as cathodes, a zinc phosphate film is uniformly formed on the surfaces of the steel wire rods by applying a certain current, and the film weight is higher than 4g/m<2> so as to meet drawing requirements. The phosphorizing temperature ranges from 10 DEG C to 60 DEG C, the phosphorizing time is 5-120 seconds, phosphorized slags are avoided, and accordingly the phosphorizing process has the obvious advantages of high efficiency, energy conservation and environmental protection.

Description

technical field [0001] The invention mainly relates to an electrolytic phosphating solution for rapidly forming a zinc phosphate film on the surface of a metal wire rod at low temperature and its application process, and is mainly used for phosphating treatment before steel wire rod drawing. Background technique [0002] Phosphating treatment refers to the process of treating metal in a solution containing phosphate to form a phosphate chemical conversion film on the surface of the metal. For more than 100 years, phosphating film can be applied to steel, aluminum, magnesium and other metals or alloys, which can not only improve the corrosion resistance, improve the adhesion between the substrate and the coating, but also significantly improve the surface friction properties of the workpiece. Improve the cold workability of the material. The zinc phosphate conversion coating layer has good ductility, and can react with sodium stearate under certain conditions to form a zinc ...

Claims

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Application Information

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IPC IPC(8): C25D11/36
Inventor 季华
Owner 派诺(湖北)绿色化学智造有限公司
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