6G hand arc welding precautions
Release time:
2021-12-22
【Summary Description】 In the electric welding process, 5G represents horizontal fixation in the butt joint of tubular test pieces, 4G represents overhead welding, 2G represents horizontal welding (plate test pieces), and 6G represents 45 ° fixation in the butt joint of tubular test pieces. "Welding rod arc welding" is the past said manual welding (welding rod).
1.Arc at the front and pull back to weld.
2.Both sides should be stopped for a while to ensure that both sides are fully integrated to prevent incomplete penetration and slag inclusion.
3.The width of the weld should not exceed 4 times of the diameter of the electrode, and if it exceeds, it should be welded in a single pass.
4.Oblique pull forward welding to keep the molten pool in a horizontal position to prevent molten iron from falling and forming weld beading.
1.Pay attention to maintain a suitable arc length, because the stiffness of the argon arc is slightly worse, and poor arc length control will reduce the protection effect and affect the quality of the joint.
2.The wire feeding should be stable, and the continuous wire feeding method should be adopted, so that the bottom of the punching is well formed.
3.It is necessary to handle the angle and position of the filler wire, and at the same time pay attention to the end of the filler wire not to exit the gas protection zone during the welding process, so as to prevent the high temperature welding wire from being oxidized by air.
4.Do not touch the tungsten wire when filling the wire, so as not to pollute the electrode. The filling wire shall be evenly and stably fed into the molten pool without moving, so as not to damage the protective airflow.
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