In the production and processing of stainless steel flanges, no matter what kind of processing methods will be used in some defects, although the defects can not be 100% to eliminate points, but as long as carefully grasp the method, or as much as possible to avoid these defects. The following is a brief introduction.
1, weld defects: stainless steel flange weld defects are more serious, if it is to use manual mechanical polishing method to make up, then produce grinding marks, resulting in uneven surface, will affect the appearance;
2, polished and passivated passivation uneven: hand-polished after pickling passivation treatment, the larger area of the workpiece, it is difficult to achieve uniform uniform treatment effect, can not be ideal for uniform surface. There are shortcomings of its working hours costs, accessories are also higher costs;
3, scratches difficult to remove: the overall pickling passivation, corrosion of the media in the presence of chemical corrosion or electrochemical corrosion and rust, can not be removed due to scratches, welding splash and adhere to the stainless steel surface of carbon steel , Splash and other impurities;
So how to solve the problem of stainless steel flange processing?
1, choose blanking, after the completion of the next process, stainless steel different parts according to the processing requirements into the corresponding process;
2, the first time to bend according to the size of the drawings, stainless steel thickness to determine the use of bending when the knife and knife slot, to avoid collision with the product caused by deformation of the mold is the key to the selection (in the same product, may Will use different models of the model), the choice of the next model according to the thickness of the plate to determine;
3, in order to weld firmly, in the workpiece to be bumped on the bump, you can make the bumps in the welding before welding with the flat uniform contact to ensure that the same point of heating, but also to determine the welding position, the need for welding, Good preload time, holding time, maintenance time, rest time, to ensure that the workpiece can be spot welding solid.
Source: China Flange Manufacturer – Yaang Pipe Industry Co., Limited (www.yaang.com)