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What are the factors that affect the polishing performance of stainless steel elbows

by:Mayer     2021-08-16
Stainless steel elbow is a butt pipe fitting that changes the direction of the pipeline in the pipeline system. According to the production process, it can be divided into: casting elbow, welding elbow, stamping elbow, push elbow, etc. The heat resistance of stainless steel elbow means that stainless steel can still maintain its excellent physical and mechanical properties at high temperatures. Influence of carbon: Carbon is strongly formed and stable in austenitic stainless steel. An element that determines austenite and expands the austenite zone. The ability of carbon to form austenite is about 30 times that of nickel. Carbon is an interstitial element and can significantly increase the strength of austenitic stainless steel through solid solution strengthening. Corrosion resistance: When the number of chromium atoms in the steel is not less than 12.5%, the electrode potential of the steel can be changed abruptly, from a negative potential to a positive electrode potential. Prevent electrochemical corrosion. Factors affecting the polishing performance of stainless steel elbows: 1. Surface defects of raw materials. Such as scratches, pitting, pickling, etc. 2. After deep-drawn products, small black spots will appear on the surface of the area with large deformation, which will affect the BQ performance. 3. Material problem. If the hardness is too low, it is not easy to polish when polishing, and if the hardness is too low, orange peel is easy to appear on the surface during deep drawing, which affects the BQ performance. BQ with high hardness is relatively good.
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