Ion implantation modified layer depth controllable stainless steel component and preparation process thereof

Abstract

An ion implantation modified layer depth controllable stainless steel component comprises a stainless steel base body and an ion implantation modified layer on the surface of the stainless steel base body. The stainless steel base body is prepared from stainless steel powder in a 3D printing manner. The depth of the ion implantation modified layer can be designed according to actual needs. Opening micropores are distributed in the surface of the stainless steel base body, the sizes of the micropores are gradually reduced in the depth directions till the micropores are closed, and the ion implantation modified layer covers the surface of the stainless steel base body and the inner surfaces of the micropores. A preparation process of the ion implantation modified layer depth controllable stainless steel component comprises the steps of printing the stainless steel base body with micropore surface structures in a 3D printing manner, treating the micropores of the stainless steel base body in a vibration manner, conducting ion normal-temperature implantation treating and other steps. According to the preparation process, the beneficial effects of the 3D printing rapid forming technology and beneficial effects of the ion implantation modified technology are combined, the depth of the ion implantation modified layer of the obtained stainless steel component for food processing machinery can be designed according to actual needs, the ion implantation modified layer depth controllable stainless steel component has excellent abrasion resistance for a long time and is suitable for food machinery for conducting squeezing or smashing to process hard materials.

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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