A local electroless nickel plating method for complex titanium alloy parts

A local chemical and titanium alloy technology, applied in the direction of liquid chemical plating, metal material coating process, plastic/resin/wax insulator, etc., can solve the impact of product quality, cannot effectively ensure smooth processing of products, and the shape of processed parts is complex and other problems, to achieve good protection effect, protection effect and method reliability improvement, and processing efficiency shortening effect

Active Publication Date: 2019-03-05
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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Problems solved by technology

[0003] At present, there are more and more parts with partial electroless nickel plating on titanium alloy materials of turbofan engines. In the process of partial electroless nickel plating of parts, it is necessary to insulate and protect the non-nickel-plated surface. In the past, insulating varnish, It is protected by wrapping insulating tape and lead tape, but as the shape of the processed parts becomes more and more complex, the traditional protection method can no longer effectively guarantee the smooth processing of the product, which affects the quality of the product, and it is difficult to guarantee the design requirements

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  • A local electroless nickel plating method for complex titanium alloy parts
  • A local electroless nickel plating method for complex titanium alloy parts
  • A local electroless nickel plating method for complex titanium alloy parts

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Embodiment Construction

[0023] Such as figure 1 As shown, the electroless nickel plating of titanium alloy includes degreasing, paint insulation, sand blowing, cold water washing, weak corrosion, cold water washing, electroless nickel plating, cold water washing, hot water washing, insulating paint removal, cold water washing, blowing Drying, inspection, heat treatment and inspection after heat treatment. Among them, the titanium alloy electroless nickel plating process goes through three main processes: sand blowing, weak corrosion, and electroless nickel plating. (1) Sand blowing will affect the surface photometric state, so the non-nickel-plated surface of the part must be protected before sand-blasting, and the adjacent non-nickel-plated surface will also be blown, so the insulating protective film must be Can withstand sand blowing, and the film layer does not fall off. (2) The main component of weak corrosion is HCl (d=1.19) 40ml / L~50ml / L (the acid used in industry is not pure, d=1.19 means t...

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Abstract

The invention discloses a local chemical nickel-plating method for a complex titanium alloy part. A non-nickel-plating surface is coated with H61-1 silicone epoxy heat-resistant paint, the H61-1 silicone epoxy heat-resistant paint comprises a component I, a component II and a component III, the component I comprises organic silicon resin and an organic solvent, the component II is a curing agent, the component III isaluminum paste, and the weight ratio of the component I to the component II to the component III is 100:30:22. The non-nickel-plating surface is subjected to insulation protection, the insulation effect is improved, the quality of a plating layer is guaranteed, and the processing efficiency is improved.

Description

technical field [0001] The invention relates to a method for insulating and protecting a non-nickel-plated surface by local electroless nickel plating of complex titanium alloy materials, which belongs to the surface treatment technology of metal materials. Background technique [0002] Titanium alloy materials have high specific strength, small specific gravity and excellent corrosion resistance, and have been widely used in industries such as aero-engines, spacecraft and rocket engines. In order to further improve the performance of titanium alloys, the surface treatment of titanium alloys, such as nickel plating, etc., has high surface hardness, good wear resistance, and good corrosion resistance. [0003] At present, there are more and more parts with partial electroless nickel plating on titanium alloy materials of turbofan engines. In the process of partial electroless nickel plating of parts, it is necessary to insulate and protect the non-nickel-plated surface. In th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36C09D183/04C09D5/25
CPCC08K3/08C08K2003/0812C09D5/18C09D183/04C23C18/1605C23C18/36H01B3/46
Inventor 周宏标李小伟张世波
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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