NEWS
新闻中心
Flange manufacturer alert when welding flange
2018-12-03
Flange manufacturer to remind you need to pay attention to the following problems when welding flange.
Flange manufacturer to remind you need to pay attention to the following problems when welding flange.
1, the weld defect: stainless steel flange weld defect is serious, if is to use manual mechanical grinding processing method to make up for, traces of grinding, surface caused by uneven, will affect beautiful.
2, scratches difficult to remove: overall pickling passivation, will happen in the presence of corrosive medium, chemical corrosion and electrochemical corrosion and rust, also cannot remove adhesion due to scratches, welding spatter on the surface of the stainless steel, carbon steel, splash and other impurities.
3, fine polishing passivation uneven: manual grinding polishing after pickling passivation treatment, on the workpiece with larger area, it is difficult to achieve uniform processing effect, not the ideal uniform surface. And its shortcomings have man-hour cost, material cost is higher also.
Remind to welding flange manufacturer and firm, on to the welding workpiece convex point, can make the bumps in front of the electric welding with plate uniform contact, to ensure the consistent of each point to heat, welding position can be determined at the same time, the need for welding, to adjusted the preloading time, the holding time, maintaining time and rest time, ensure the workpiece can spot welding is firm.
Related information