Preparation method of high-precision stainless steel product

Abstract

The invention discloses a preparation method of a high-precision stainless steel product. The method sequentially includes the following steps that S1, stainless steel powder and tungsten carbide powder are mixed and then are subjected to ball-milling mixing by the aid of a ball mill, and mixed stainless steel powder is prepared; S2, acrylate monomers, zinc oxide, phosphoric acid, nitric acid, a silane coupling agent KH-570, polyethylene glycol and tributyl borate are evenly mixed and then are heated in a water bath, then vinyl fluoride, sodium fluoride, sodium nitrate, nickel sulfate, sodiumpersulfate, polypropylene resin, barium metaborate, tetrabromobisphenol A, nano calcium carbonate, methyl triethoxysilane and an antibacterial aid are added to the mixture, the mixture is evenly stirred, is subjected to heat preservation and then is cooled to the room temperature, hydrogenated polydecene is added to the mixture, and a binder is prepared; S3, the prepared mixed stainless steel powder and the prepared binder are mixed and then are subjected to injection molding and degreasing treatment in warm water, then high-temperature sintering is performed, and a finished product is prepared. The stainless steel prepared with the method has the excellent anti-corrosion, flame-retardant and anti-bacterial properties.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of stainless steel preparation, and in particular relates to a preparation method of high-precision stainless steel products. [0003] 【Background technique】 [0004] Metal Injection Molding (MIM) is a high-tech produced by combining traditional powder metallurgy technology and plastic injection molding technology. This technology has the following advantages: parts with very complex shapes can be produced; the degree of densification of sintering is high, and the performance is comparable to that of forged materials; High-quality machining; high material utilization rate, suitable for mass production; small investment in equipment, and can automatically control the entire process, high production efficiency. The general metal injection process is as follows: the first step is at the beginning of injection molding, the mold is in the mold opening state, wipe the inside of the mold with a clean cloth...

AI Technical Summary

Problems solved by technology

The stainless high-grade products prepared by the present invention not only have high precision and good integrity, but also have excellent mechanical properties, greatly improving the quality of stainless steel products, but their flame retardancy is poor, and their anti-corrosion properties cannot meet high temperature requirements. The demand for anti-corrosion and anti-bacterial properties under certain conditions

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