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Preparation method of high-strength steel low-hydrogen-brittleness zinc-nickel alloy electroplating alkaline plating solution

A high-strength steel and zinc-nickel alloy technology, which is applied in the field of alkaline plating solution preparation for high-strength steel and low-hydrogen embrittlement zinc-nickel alloy electroplating, can solve the problems affecting the corrosion resistance and surface quality of the coating, the inclusion of many coatings, and the nickel content of the plating solution Poor dispersibility and other problems, to achieve the effect of improving manufacturability, good coating dispersibility, and improving anti-corrosion performance

Inactive Publication Date: 2020-11-17
SHENYANG AIRCRAFT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are various alkaline zinc-nickel alloy plating solutions prepared at home and abroad, but the nickel content of these plating solutions is poorly dispersed, and the coating has many inclusions, which seriously affects the corrosion resistance and surface quality of the coating.

Method used

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Examples

Experimental program
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Embodiment Construction

[0017] The present invention is further illustrated by the following examples, but not as a limitation of the present invention. Specific materials and their sources used in embodiments of the invention are provided below. However, it should be understood that these are merely exemplary and not intended to limit the present invention, and materials with the same or similar type, model, quality, property or function as the following reagents and instruments can be used to implement the present invention. The experimental methods used in the following examples are conventional methods unless otherwise specified. The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0018] The present invention is further described in conjunction with preparing 100L alkaline electroplating zinc-nickel alloy plating solution, detailed content is as follows:

[0019] 1) Preparation before bath preparation: Before bath prepa...

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Abstract

The invention provides a preparation method of a high-strength steel low-hydrogen-brittleness zinc-nickel alloy electroplating alkaline plating solution. The preparation method comprises the steps ofpreparation before bath solution preparation, preparation of zinc oxide and sodium hydroxide, preparation of a complexing agent and a nickel main salt solution mixed solution, solution feeding of a brightener of 0-0.5 L and an electrolytic solution and the like. The preparation method has the advantages that a high-strength steel surface low-hydrogen-brittleness alkaline zinc-nickel alloy electroplating solution plating layer adopting the formula is good in dispersity, the nickel content on the plating layer surface is well controlled to be specified 8%-16%, the allowable temperature range inthe electroplating process is enlarged, the allowable temperature width of electroplating exceeds 20 DEG C, the manufacturability of electroplating operation is improved, moreover, a complexing agentof the plating layer is stable, the corrosion resistance is improved, no red rust appears after a neutral salt spray test for 4000 hours, meanwhile, low hydrogen brittleness is achieved, and the plating layer is free of inclusions.

Description

technical field [0001] The invention belongs to the technical field of zinc-nickel alloy electroplating surface treatment, and in particular relates to a method for preparing an alkaline plating solution for high-strength steel and low-hydrogen embrittlement zinc-nickel alloy electroplating. Background technique [0002] The zinc-nickel alloy plating solution determines the surface quality of the coating, the nickel content on the surface and whether there are inclusions in the coating. Zinc-nickel alloy plating solution is divided into alkaline plating solution and acidic plating solution. Acidic plating solution has a greater effect of hydrogen embrittlement, so the selection of alkaline plating solution eliminates the hydrogen embrittlement susceptibility of parts, especially high-strength steel. There are various alkaline zinc-nickel alloy plating solutions prepared at home and abroad, but the nickel content of these plating solutions is poorly dispersed, and the coatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56
CPCC25D3/565
Inventor 杨堃胡遐林潘新
Owner SHENYANG AIRCRAFT CORP