A stainless steel component with controllable depth of ion implantation modified layer and its preparation process

Abstract

A stainless steel part with controllable depth of ion implantation modification layer, comprising a stainless steel substrate and an ion implantation modification layer on the surface of the stainless steel substrate, the stainless steel substrate is prepared by 3D printing stainless steel powder, and the depth of the ion implantation modification layer can be determined according to It is actually necessary to design that the surface of the stainless steel substrate is distributed with open micropores, and the size of the micropores gradually decreases with the depth direction until they are closed, and the ion implantation modified layer covers the surface of the stainless steel substrate and the pores of the micropores. The inner surface. The preparation process of the stainless steel part includes the steps of 3D printing a stainless steel substrate with a microporous surface structure, microporous vibration treatment of the stainless steel substrate, and ion implantation treatment at room temperature. This preparation process combines the advantages of 3D printing rapid prototyping technology and ion implantation modification technology. The depth of ion implantation modification layer of stainless steel parts of food processing machinery obtained can be designed according to actual needs. It has long-term and excellent wear resistance and is suitable for In food machinery that processes hard materials such as pressing or crushing.

Description

technical field [0001] The invention relates to a food machine, more specifically to a stainless steel part of a food processing machine and a preparation process thereof. Background technique [0002] The working conditions and service environment of food processing machinery are very complex, and friction and wear are unavoidable problems, especially for crushing and beating food processing machinery. For soymilk machines, juicers and wall breaking machines that are often encountered in daily life, the crushing or beating parts need to work in a wide range of speeds, even hundreds of thousands of revolutions per minute. Under such conditions When rubbing against soybeans, fruit peels, fruit cores, etc., wear is inevitable. For the assembly line of food processing and production enterprises, the wear of crushing and beating equipment in the continuous and uninterrupted production process needs to be solved. Nice work out. This puts forward higher requirements on the wear ...

AI Technical Summary

Problems solved by technology

However, the depth of the ion-implanted modified layer becomes the key to limit the wear resistance of stainless steel parts of food processing machinery

For stainless steel, the energy, dose and order of implanted ions will affect the depth of the ion implanted modified layer, but the idea of ​​greatly increasing the ion implantation energy to increase the implantation depth is limited by the ion implantation equipment itself and cannot be realized in practical applications. , the ion implantation dose and sequence are limited by the sputtering between ions after reaching the saturation dose, and it is also impossible to obtain a sufficient depth of ion implantation layer

Studies have shown that the depth of non-metallic ions represented by nitrogen ions implanted on the surface of stainless steel can only reach 200-300 nanometers, while the depth of the ion-implanted modified layer on the surface of stainless steel after implantation of metal ions such as W and Mo is only about 100 nanometers. And this cannot meet the actual needs of food processing machinery wear parts

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