Metal powder, feeding and preparation process for preparing antibacterial stainless steel wearable products

Abstract

The invention relates to a metal powder, feeding and preparation process for preparing antibacterial stainless steel wearable products. The mental powder is prepared from the components in percentageby mass: C: <=0.03%; Si: 0.4%-0.6%; Mn: 0.4%-0.8%; S: <=0.02%; P: <=0.02%; N: <=0.02%; Cr: 17%-19%; Ni: 7.5%-8.5%; Cu: 3.5%-4.5%; Cu: 1%-5%, and the balance of Fe. The preparation technology comprisesthe steps of S1: preparing powder; S2: preparing feed; S3: injecting: the feed is added to an injection machine, and the injection machine injects the feed into an internal cavity of an injection mold to form an injection blank; S4: sintering: the injection blank is sintered to form a sintered blank; and S5: heat treatment: the sintered blank is heat-treated to precipitate a copper-rich phase. Copper is added to stainless steel powder, and the copper makes the product have the characteristics of sterilization. The precipitation of copper in the form of the second phase can increase the hardness and strength of products and increase the scratch resistance of surfaces.

Description

technical field [0001] The invention relates to metal powder, feeding material and preparation process for preparing antibacterial stainless steel wear products. Background technique [0002] Traditional antibacterial stainless steel is to precipitate a certain volume fraction of copper-rich or silver-rich precipitates during high-temperature aging. When this copper-rich / silver phase comes into contact with bacteria, it can release a small amount of copper ions and destroy the cell walls of bacteria. cause bacterial death. However, the preparation of traditional stainless steel also has problems such as high technical difficulty, complicated smelting process, difficulty in mass production, and low degree of freedom and precision in product design. [0003] In recent years, smart wearable products have developed rapidly under the concept of 5G. Most of the products are in direct contact with the skin. If the antibacterial ability is poor, a large number of bacteria will gro...

AI Technical Summary

Problems solved by technology

[0004] The main problems in the preparation of the mainstream three types of antibacterial stainless steel at present: (1) The antibacterial performance of the surface-coated antibacterial stainless steel is good, but the requirements for production equipment and production technology are relatively high. At the same time, during the use process, the surface The antibacterial layer of the stainless steel is easy to fall off, which will greatly reduce the antibacterial properties of stainless steel

However, it is also difficult to achieve mass production due to the high requirements for production equipment and production technology, and its application range is only among knives, so it is difficult to put it into production and use widely.

(3) Alloy type antibacterial stainless steel, although its antibacterial and wear resistance are better than other types of antibacterial stainless steel, but the production process of adding antibacterial metal elements such as copper and silver is also relatively complicated, and it is difficult to directly use stainless steel for short-process production