Influencing factors of polishing performance of stainless steel elbow

When using stainless steel elbow ball valves, globe valves, and gate valves, they are only fully open or fully closed, and are not allowed to be used for flow adjustment, so as to avoid erosion of the sealing surface and accelerate wear. There is an inverted sealing device in the gate valve and the upper threaded stop valve, and the handwheel is turned to the upper position and tightened to prevent the medium from leaking from the packing. 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 during polishing, and if the hardness is too low, orange peel will easily appear on the surface during deep drawing, which will affect the BQ performance. BQ with high hardness is relatively good. Most of the stainless steel elbow fittings are used for welding. In order to improve the welding quality, the ends are beveled with a certain angle and a certain side. This requirement is also strict, how thick the side, how much angle and deviation The scope is stipulated, and there are many more items than pipe fittings in geometric dimensions. The surface quality and mechanical properties of elbows are basically the same as those of pipes. For the convenience of welding, the steel material of the pipe to be connected should be the same.