How To Solve The Long Weld When Welding Elbows In Stainless Steel Pipe Fittings

If the liquid metal in the molten pool is blown out, it means that the gas flow is too large or the flame core is too close to the molten pool. At this time, the flame energy should be adjusted immediately or the flame core should be kept at the correct distance from the molten pool. When welding, except for the beginning and the end, the speed should be kept uniform and not fast or slow. How to solve the long weld when welding elbows in stainless steel pipe fittings? Generally, positioning welding should be done first, and then welding should be done alternately from the middle to both sides. Flat fillet welding Flat fillet welding. The method of welding two welded parts at a certain angle to each other with a weld angle of is called flat fillet welding. When the angle is flat, due to the dripping of the molten pool metal, undercuts and unequal sizes of the two sides of the weld foot are often produced at the vertical plate. The following points should be noted during the two operations. Preheating before welding, the flat plate should be heated to dark red first, and then the flame should be gradually turned to the vertical plate. After the molten pool is formed at the welding start, the welding wire can be added to weld to avoid the root weld not being penetrated. During the process, the welding torch maintains an angle with the flat plate and an angle with the vertical plate; the angle between the welding wire and the welding torch is about, and the angle between the welding wire and the vertical plate is.

During the process, the welding wire should always be immersed in the molten pool to prevent the flame from overheating the molten metal and preventing the molten pool metal from dripping. During operation, the welding torch moves forward in a spiral swing to make the weld leg sizes equal. At the same time, attention should be paid to observing the molten pool, and the inclination angle and welding wire filling amount should be adjusted in time to prevent undercutting. When approaching the end, the angle between the welding torch and the plane should be reduced, the speed should be increased, and the welding wire filling amount should be appropriately increased. When finishing, the welding torch should be appropriately raised, and the welding wire should be continuously filled. The welding torch can be evacuated only after the molten pool is filled. The position of the fillet weld with a weld angle of a butt weld or a weld angle of a stainless steel elbow weld angle of a horizontal welding seam is called the horizontal welding position. The horizontal welding position is horizontal welding. Due to the dripping of the molten metal pool in the horizontal butt welding of flat plates, it is easy to form weld nodules or unfused welds on the weld. The following points should be noted during operation. Use a smaller flame energy than that of vertical welding to properly control the temperature of the molten pool, which can ensure full penetration and prevent the molten metal from falling due to excessive heating.

Stainless Steel Weld Elbow during operation, the welding torch is tilted upward and keeps an angle with the weldment, and the blowing force of the flame is used to support the molten metal in the molten pool to prevent dripping. When welding, the welding wire should always be immersed in the molten pool, and the molten metal should be continuously pushed upward. The welding wire should swing back and forth in a semicircular or oblique ring, and be heated and melted by the flame during the swinging process to avoid the molten metal accumulating under the molten pool to form undercut weld nodules. For thin parts, the welding nozzle generally does not swing; for thicker parts, the welding nozzle can swing in a small ring. To prevent the flame from burning your hands, the front end of the welding wire can be heated and bent into an angle of . The handheld end should be vertically downward. The position where the weld angle of the stainless steel elbow is is called the vertical welding position. The operation performed in the vertical welding position is called vertical welding. When welding vertically, the molten pool metal is more likely to flow down, the weld is difficult to form, and it is not easy to get a flat weld. Flat plate vertical butt welding generally adopts the left welding method from bottom to top. The relative position of the welding tip wire and the workpiece.