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How to solve the problems in the process of processing stainless steel flanges

Source: Baolu Heavy    Hits:

  The processing of stainless steel flanges needs to understand and pay attention to some problems:

  1. Welding seam defects: the welding seam defects of stainless steel flanges are more serious. If manual mechanical grinding is used to make up for it, the resulting grinding marks will cause uneven surface affect the appearance;

  2. Uneven grinding polishing passivation: pickling passivation after manual grinding polishing, it is difficult to achieve a uniform treatment effect for a workpiece with a large area, an ideal uniform surface cannot be obtained. There are also its shortcomings, such as labor costs high cost of auxiliary materials;

  3. Scratches are difficult to remove: the overall pickling passivation will cause chemical corrosion or electrochemical corrosion rust in the presence of corrosive media. Carbon steel that adheres to the stainless steel surface due to scratches welding spatter cannot be removed. , Splash other impurities;

  So how to solve the problem of stainless steel flange processing?

  1, select blanking, after completion, enter the next process, different stainless steel workpieces enter the corresponding process according to the processing requirements;

  2. When bending, you must first determine the tool slot used for bending according to the size on the drawing the thickness of stainless 304 seamless steel pipe. Avoiding deformation caused by collision between the product the tool is the key to the selection of the upper mold (in the same In a product, different types of upper molds may be used), the selection of the lower mold is determined according to the thickness of the plate.

  3. In order to weld firmly, make bumps on the workpiece to be welded. The bumps can be evenly contacted with the plate before energized welding to ensure that the heating of each point is consistent. At the same time, the welding position can be determined. The welding needs to be adjusted. Good preload time, holding time, maintenance time, rest time, to ensure that the workpiece can be spot welded firmly.