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Factors influencing polishing performance of stainless steel elbow

2019-12-04 11:04:19   COMMENT:0 HITS:

  When the ball valve, stop valve and gate valve of stainless steel elbow are used, they are only used for full opening or full closing. It is not allowed to adjust the flow, so as to avoid erosion of the sealing surface and accelerated wear. The gate valve and upper thread stop valve are provided with back sealing device, and the hand wheel is screwed to the top position to prevent the medium from leaking from the packing. Factors affecting the polishing performance of stainless steel elbow:

  1. Surface defects of raw materials. Such as scratch, pitting, pickling, etc.  2. After deep drawing, small black spots will appear on the surface of the area with large deformation, which will affect the BQ property. 3. Material of raw materials. Hardness is too low, polishing is not easy to polish, and hardness is too low, in deep drawing, the surface is prone to orange peel phenomenon, thus affecting 304 316L 321 310S Stainless Seamless Steel Pipe. The hardness of BQ is relatively good. Most of the stainless steel elbow pipe fittings are used for welding. In order to improve the welding quality, the ends are beveled, with a certain angle and a certain edge. This requirement is also relatively strict. There are provisions for how many sides are thick, how many angles and deviation ranges, and there are many more geometric dimensions than the pipe fittings. The surface quality and mechanical properties of the elbow are basically the same as that of the pipe. For the convenience of welding, the material of the steel of the connected pipe shall be the same.

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