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    Stainless steel welding

    Stainless steel welding is suitable for stainless steel electrodes used in manual arc welding. The chromium content in deposited metal of such electrodes should be more than 10.50%, and the iron content should be higher than any other element. Deposited metal: weld metal formed entirely by the melting of filler metal. Although these welding methods are familiar to most people in the stainless steel industry, we believe that this field deserves further study. Manual welding (MMA): Manual welding is a very common and easy-to-use welding method. The length of the arc is regulated by human hand, which depends on the size of the gap between the welding rod and the workpiece. At the same time, as the carrier of the arc, the electrodes are also the filling materials of the weld. This welding method is simple and can be used to weld almost all materials. For outdoor use, it has good adaptability, even in underwater use is not a problem. Most welding machines can be TIG welded. In electrode welding, the arc length depends on the human hand: when you change the gap between the electrode and the workpiece, you also change the arc length. In most cases, direct current is used for welding, and the electrode is used as both the arc carrier and the filling material for the weld. The electrode consists of alloy or non-alloy metal core wire and electrode coating. This coating protects the weld from air and stabilizes the arc. It also causes the formation of slag layer and protects the weld to form. The electrodes are either titanium-type or tacky, depending on the thickness and composition of the coating. Titanium electrode is easy to weld, and the weld is flat and beautiful. In addition, the slag is easy to remove. If the electrode is stored for a long time, it must be baked again. Because the moisture from the air will soon accumulate in the electrode.
    MIG/MAG welding: This is an automatic gas shielded arc welding method. In this method, the arc is fired between the current carrier wire and the workpiece under the shield of protective gas. The metal wire fed by the machine is used as welding rod and melts under its own arc. Because of the universality and particularity of MIG/MAG welding method, it is still the most widely used welding method in the world. It is used in steel, non-alloy steel, low alloy steel and high alloy based materials. This makes it an ideal welding method for production and repair. When welding steel, MAG can meet the requirement of thin gauge steel plate only 0.6mm thick. The protective gases used here are active gases, such as carbon dioxide or mixed gases. The only limitation is that when outdoor welding is carried out, the workpiece must be protected from moisture in order to maintain the effect of gas. TIG welding: Arc is generated between refractory tungsten wire and workpiece. The protective gas used here is pure argon, and the welding wire is not charged. Welding wire can be sent either by hand or by machine. There are also some specific uses that do not require wire feeding. The material to be welded determines whether DC or AC is used. When DC is used, tungsten wire is set as negative electrode. Because of its deep penetration ability, it is suitable for different kinds of steel, but it has no "cleaning effect" on weld pool. The main advantage of TIG welding method is that it can weld a wide range of materials. Including workpieces with thickness of 0.6 mm or more, the materials include alloy steel, aluminum, magnesium, copper and its alloys, grey cast iron, ordinary dry, various bronze, nickel, silver, titanium and lead. The main application areas are welding thin and medium thickness workpieces, which are used as root beads on thicker sections.

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