Seam welding is a pair of rolled plate electrode instead of spot welding of cylindrical electrode, and the relative motion artifacts, resulting in a small molten nuclear mutually shiplap seal weld soldering method. Solderingg assembly into lap or butt joint and between the two electrodes of roller and roller pressure soldering and rotation, continuous or intermittent transmission, forming a continuous weld resistance welding method.Weld is widely used in oil drum, tin cans, radiator, aircraft and automobile fuel tank, and a jet engine, rocket, missile in the sealed container sheet soldering.
Welded seam welded pipe is the binding portion of the formation. By the full extent of the weld metal into the base metal butt weld penetration and incomplete penetration butt welds. Lack of penetration of the welded seam of course it is a relatively small force, while the penetration butt welds can be simply referred to as butt welds. Both the pipe welding process is not much difference, but differ in weld inspection, one generally needs to be done to one hundred percent of the solder flaw, but only need to weld two percent twenty testing on it, but whether it is one or two seam weld slag are allowed to exist, or arc scratch defects, in addition to a solder undercut Also note may not appear or No welding is full of flaws, defects can happen to their work to bring more trouble.
For the primary requirement is that the solder is the largest percent of the length of each solder ultrasonic flaw detection, and as a secondary weld only need twenty percent for sampling. Although one and two welds are full penetration welds, but do not allow any kind of weld defects, these defects including slag, crater cracks, etc., the emergence of these defects can only give our work bring more trouble, so in the process must pay attention to these issues in order to allow greater security presence solder effect, so we work to get better help. In addition, we also need to note that either one or two to have a certain tensile weld pressure and bending effects, its extent and the base material is the same, we are in the course might have heard of penetration This term refers to the penetration depth of the molten parent metal, that is the chemical composition of the weld penetration depth to determine the size. Therefore, the penetration value plays a very important role in the soldering process. In order to ensure the hardness of solder layer we must reduce the dilution of the base metal of the weld, the weld being so as to make better use of our work.
