Seeking a nickel-based alloy welding process welding process A: 1 trimming (1) trimming groove, blunt edge on both sides of the weld 30mm range. (2) weld oxide film with a rasp, grinding wheel to clean up. (3) the weld clean-up of dirt, grease, paint application, acetone, lye, or special synthetic agent. 2 welding Notes 2.1 good premise to ensure penetration and fusion welding, as far as possible in the process parameters within a small welding line energy, short arc, not swing or small swing operation. 2.2 When the thick weldment need multi-pass welding shall meet the following requirements: (1) In addition to the rest of the backing weld outer solder layer should adopt a multi-pass welding. (2) the temperature of the layer should be less than 100 ° C. (3) each layer every after welding should be the elimination of the weld surface of the slag, and the elimination of all surface defects. (4) layers of the welded joints of the Road to stagger. .2.3 Solid wire or filler wire tungsten arc welding, weld the back filled with argon, pipe the whole or partial argon two methods can be used to implement within the protection, within the protective measures, and shall meet the following requirements: (1) the beginning of the tube filled with argon flow may be appropriate to increase, to confirm that the air in the tube completely ruled out before welding. (2) welding filled with argon flow can be gradually reduced to avoid higher argon gas pressure caused by the back seam forming within or root incomplete penetration. 2.4 tungsten arc welding, the heated end of the wire should always be under the protection of argon. To strengthen the protective effect in the home of the rear side of the tip auxiliary to transport protective gas drag cover. The 2.5 arc weldment surface non abrasions and non weldment surface arc, closing arc. 2.6 welding power supply ground connection to the weldment shall direct contact with the workpiece, the transition should be using the same material and weldment material connection to avoid iron contamination. 2.7 welding should ensure the quality of the arc with the closing arc, the closing arc crater fill. 2.8 welding smaller diameter weld hot cracking tendency of larger material should be taken to weld both sides mounted cooling copper block, or wipe with cold water, ethanol weld on both sides, and other measures to reduce the high temperature of the weld stay time, speed up the cooling rate of the weld. 2.9 welding is completed must be timely to the surface of the weld slag and spatter around, splash material clean. 2.10 welded construction to avoid contamination, should be made of stainless steel hammer, stainless steel wire brush, dedicated grinding wheel. The 3 welding process parameters Different series of nickel and nickel alloy welding parameters are slightly different