The processing of stainless steel flange needs to understand and pay attention to some problems:
1, weld defect: The weld defect of stainless steel flange is more serious, if it is made up by manual mechanical grinding treatment method, then the resulting grinding marks, resulting in uneven surface, will affect the beauty;
2, polishing and passivation is not uniform: hand-polished polishing and passivation treatment, for the larger area of the workpiece, it is difficult to achieve uniform treatment effect, can not get an ideal uniform surface. There are also its disadvantages of working hours, auxiliary material costs are also higher;
3, scratches are difficult to remove: the overall pickling passivation, chemical corrosion or electrochemical corrosion will occur in the presence of corrosive media and rust, nor can it remove carbon steel, splash and other impurities that adhere to the stainless steel surface due to scratches and welding splashes;
So how to solve the problem of stainless steel flange processing?
1, choose to drop the material, after completion, enter the next process, stainless steel different workpieces into the corresponding process according to the requirements of the processing;
2, when bending should first be based on the size of the drawing, the thickness of the stainless 304 seamless steel pipe to determine the tool and slot used for bending, to avoid the product and tool collision caused by deformation is the key to the selection of the upper mold(in the same product, Different models of the upper mold may be used. The selection of the lower mold is determined according to the thickness of the plate.
3, in order to weld firmly, the convex point on the workpiece to be welded, can make the convex point in uniform contact with the plate before welding, so as to ensure the consistency of the heating of each point, but also to determine the welding position, the need for welding. To adjust the pre-pressure time, hold the pressure time, maintain the time, rest time, ensure that the workpiece can spot welding firm.