A kind of method that ni-p alloy is plated on the surface of additive manufacturing aluminum alloy
A technology of aluminum alloy surface and additive manufacturing, which is applied in the direction of liquid chemical plating, metal material coating process, coating, etc., can solve the problems of poor forming accuracy, inapplicability, sticking powder of workpieces, etc., and reduce surface roughness , reduce the generation of particles, and avoid the effect of excessive corrosion
Active Publication Date: 2019-07-12
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology
[0003] Although 3D printing technology has unique advantages in forming complex structures, it also has disadvantages that cannot be ignored: the maximum size of structural parts is limited, the forming accuracy is poor, the surface roughness is large, and post-processing is required to achieve higher the accuracy of
Since the molding process of 3D printed parts is quite different from the casting molding process, compared with casting parts, its layer-by-layer molding process directly leads to greater precision and surface roughness of 3D printed parts, and there are serious adhesions on the surface of the workpiece. Powder and other issues
Therefore, the existing surface treatment process for cast aluminum alloy workpieces is not suitable for the treatment of the surface of 3D printed aluminum alloy workpieces
Method used
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Embodiment 1
[0034] The steps of surface plating Ni-P alloy for the aluminum alloy workpiece prepared by additive manufacturing process are as follows:
[0035] (1) Pretreatment of plated parts
[0036] (1.1) Sandblasting treatment: perform sandblasting pretreatment on the plated parts in a sandblasting machine to remove surface defects; then, rinse with tap water for 3 times, then ultrasonically clean for 30 minutes, and finally rinse with deionized water for 5 times;
[0037] (1.2) Alkali degreasing treatment: put the plated parts after sand blasting into the alkali solution at 55°C, take them out after 30 minutes, rinse them with tap water for 5 times, then ultrasonically clean them for 30 minutes, and finally rinse them with deionized water for 3 times;
[0038] The solvent of described lye is water, and its composition and the concentration of each composition: sodium carbonate 40g / L, sodium phosphate 40g / L, sodium silicate 30g / L;
[0039] (1.3) Acid etching and film removal treatmen...
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Abstract
The invention relates to a method for plating a Ni-P alloy on an additive-manufactured aluminum alloy surface, and belongs to the technical field of surface modification. The method comprises the following steps: performing a sand blasting process, an alkaline oil-removal process and an acid-corrosion stripping pretreatment process on a plated part; plating zinc on the surface of the plated part;and plating a nickel alloy on the plated part. Compared with a surface treatment process for casting workpieces, the method has the advantages of stably and uniformly plating a 3D printed molded partby improving a plated part pretreatment process, changing components and content of alkaline liquor and controlling components and content thereof in nickel plating liquor, greatly reducing surface roughness of the 3D printed formed part, and improving corrosion resistance, wear resistance, weldability and electric contact performance of the 3D printed formed part.
Description
technical field [0001] The invention relates to a method for plating a Ni-P alloy on a metal surface, in particular to a method for plating a Ni-P alloy on the surface of an additively manufactured aluminum alloy, and belongs to the technical field of surface modification. Background technique [0002] 3D printing technology, also known as additive manufacturing technology or 3D rapid prototyping technology, originated in the 1980s. It is based on digital model files, using discrete materials (liquid, powder, wire, sheet, plate, etc.), through A technique for manufacturing objects of arbitrary complex shapes in a layer-by-layer accumulation manner. In recent years, 3D printing technology has developed rapidly as a cutting-edge advanced manufacturing technology, and is rapidly changing people's production and lifestyle, and has gradually played an important role in the fields of aerospace, biomedicine, industrial manufacturing, construction manufacturing, culture and art, etc...
Claims
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IPC IPC(8): C23C18/36C23C18/52C23C18/18
CPCC23C18/1806C23C18/1844C23C18/36C23C18/52
Inventor 张啸雨史文华曾福明周浩陈星宇曾惠忠刘海平兰惠清
Owner BEIJING INST OF SPACECRAFT SYST ENG