Stainless steel change-rolling expertise - about welding common technology stainless steel "target=_blank> stainless steel is the most commonly used welding methods are three types: manual welding (MMA), metal inert gas shielded arc welding (MIG / MAG) and tungsten Extremely inert gas shielded welding (TIG). Although most of these welding methods are familiar with the stainless steel "target=_blank" stainless steel industry, we believe this area deserves an in-depth discussion.
1. Manual Welding (MMA): Manual welding is a very common and easy to use welding method. The length of the adjusted hand arc depends on the size of the gap between the electrode and the workpiece. At the same time, the carrier acts as an electric arc, electrode and welding filler material. This welding method is very simple and almost all can be used for welding materials. Outdoor use, with good adaptability, no problem. Even if you use underwater, most of the tungsten inert gas shielded arc welding machines can be used. The arc length of manual arc welding is made by people's hands: when changing the electrode and the workpiece aperture, you also change the length of the arc. In most cases, with DC welding, the electrode arc is the carrier while the filler material is welded. Covered by metal or alloy metal core wires and electrodes. The arc is stabilized by welding from the protective layer in the air. It also leads to the formation of a slag layer and protects the shape of the weld. The electrode can be a titanium electrode and sealed, depending on the thickness and composition of the coating. Titanium electrodes are easy to weld, welds are flat and beautiful. In addition, the slag is easily removed. If the electrode is stored for a long time, it must be baked again. As the moisture in the air quickly accumulates at the electrodes.
2. MIG / MAG welding: This is an automatic gas shielded arc welding method. In this method, the protective gas protects the wires and the workpiece from burning between the electric carriers. The machine enters the line as an electrode and melts in its own arc. Due to the universality and particularity of the MIG / MAG welding method, her advantage is still the most extensive welding method in the world. It uses steel, alloy steel, low alloy steel and high alloy substrates. This makes it ideal for the production and maintenance of welding methods. When welding steel, the magazine can only meet 0.6 mm thick steel sheets. Here, an active gas shielding gas such as carbon dioxide or a mixed gas is used. The only limitation is that when welding outdoors, the workpiece must be protected from moisture and moisture.
3. Tungsten inert gas protection arc welding arc refractory wire between tungsten and workpiece. The shielding gas used here is pure argon, and the incoming line is not charged. The mechanical line can be on the one hand and can also be sent. There are also some specific uses that do not require a line. Whether the material to be soldered is using direct current (dc) or alternating current. Use a direct current (dc), tungsten cathode to set the wire. Because it has deep penetration, it is very suitable for different types of steel, but there is no "clean" for the weld pool. The main advantages of tungsten inert gas shielded arc welding can be a wide range of large welding materials. Above 0.6 mm and workpieces, including thickness materials include alloy steel, aluminum, magnesium, copper and their alloys, grey cast iron, common dry, various copper, nickel, silver, titanium, lead. The main application areas are welding thin, medium-thick workpieces with thick sections as root welds.
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