Processing technology of zinc-nickel plating alloy

A processing technology, zinc-nickel technology, applied in the field of zinc-nickel alloy processing technology, can solve the problems of poor repeatability, complex process, insufficient corrosion resistance, oxidation resistance and thermal stability, etc., to improve the appearance The effect of high degree, simple process operation, smooth and complete appearance

Inactive Publication Date: 2020-04-24
TIANJIN DAGANG GALVANIZED FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Zinc-nickel alloy plating has been widely used in the electroplating industry. Compared with cadmium plating, zinc-nickel alloy has less environmental pollution and is often used as a substitute for cadmium plating in the aviation industry. However, the process is complicated and the repeatability is poor. , the brightness of the coating and the stability of the plating solution need to be further improved. At the same time, its corrosion resistance, oxidation resistance and thermal stability are not perfect after the surface coating of the workpiece. Therefore, those skilled in the art provide a zinc-nickel coating The processing technology of alloy, to solve the problem that raises in the above-mentioned background technology

Method used

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  • Processing technology of zinc-nickel plating alloy

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Embodiment 1

[0034] A kind of processing technology of galvanized nickel alloy, its processing technology is the following steps:

[0035] S1: Pretreatment, remove the dirt, metal shavings, marks and other attachments on the surface of the workpiece;

[0036] S2: Degreasing the surface, degreasing the large amount of oil stains on the surface of the workpiece;

[0037] S3: Cleaning, using clean flowing water to rinse the workpiece after degreasing in S2, and then hang it;

[0038] S4: Etching and activation, put the workpiece in S3 into the etching solution for immersion, keep the temperature at 20-30°C, and the time is 0.5-3min, it is convenient to remove the slight rust on the surface of the workpiece, activate the metal, and then use running water rinse, dry;

[0039] S5: coating, the workpiece etched by S4 is electroplated with a zinc-nickel alloy plating solution, and after the electroplating is completed, it is rinsed with running water and then dried;

[0040] S6: passivation tre...

Embodiment 2

[0058] A kind of processing technology of galvanized nickel alloy, its processing technology is the following steps:

[0059] S1: Pretreatment, remove the dirt, metal shavings, marks and other attachments on the surface of the workpiece;

[0060] S2: Degreasing the surface, degreasing the large amount of oil stains on the surface of the workpiece;

[0061] S3: Cleaning, using clean flowing water to rinse the workpiece after degreasing in S2, and then hang it;

[0062] S4: Etching and activation, put the workpiece in S3 into the etching solution for immersion, keep the temperature at 20-30°C, and the time is 0.5-3min, it is convenient to remove the slight rust on the surface of the workpiece, activate the metal, and then use running water rinse, dry;

[0063] S5: coating, the workpiece etched by S4 is electroplated with a zinc-nickel alloy plating solution, and after the electroplating is completed, it is rinsed with running water and then dried;

[0064] S6: passivation tre...

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Abstract

The invention discloses a processing technology of a zinc-nickel plating alloy. The processing technology comprises the following steps: S1, pretreatment; S2, surface oil removal; S3, cleaning; S4, etching and activation; S5, plating; S6, passivation treatment; S7, surface treatment; and S8, inspection. During actual use, a zinc-nickel alloy coating layer is plated on the surface of a workpiece; the high-strength bonding force with a workpiece can be realized; the zinc-nickel plating alloy plating layer is fine in appearance, free of pinholes and free of blistering; the attractiveness of the workpiece is further improved; meanwhile, after the workpiece plating is finished, the surface is treated by a treatment liquid; the surface of the workpiece can be further protected, so that the workpiece has good thermal stability, corrosion resistance and oxidation resistance, the surface of the workpiece soaked in the treatment liquid is smooth and complete, and holes and redundant parts are avoided; the process is easy to operate, and the corrosion resistance of the plating layer is still superior to that of a pure zinc plating layer after the plating layer is processed.

Description

technical field [0001] The invention relates to the technical field of processing zinc-nickel alloys, in particular to a processing technology for zinc-nickel alloys. Background technique [0002] As a lightweight engineering structural material, magnesium alloy has high specific strength, high specific stiffness and superior shock absorption performance, and has a wide range of applications in transportation, communication, aviation, aerospace and other fields. However, magnesium alloys have high chemical activity, low electrode potential, and loose oxide film on the surface, resulting in low protection performance, which restricts the application and development of magnesium alloys. This has aroused people's attention to the surface corrosion and protection of magnesium alloy parts, and a lot of research has been done on the surface of magnesium alloys, such as anodic oxidation, chemical conversion film, organic coating, surface plating, etc., especially the use of electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56C25D5/34C25D5/48
CPCC25D3/565C25D5/34C25D5/48
Inventor 张汝山
Owner TIANJIN DAGANG GALVANIZED FACTORY
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