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1.TIG Welding is generally a hand-held welding gun, the other hand-held welding wire, suitable for small-scale operation and repair of manual welding.
2.MIG and MAG, wire through the automatic wire feeding mechanism sent from the Torch, suitable for automatic welding, of course, can also be used manually.
3. The difference between MAG and MAG is mainly in the protection of the atmosphere. Equipment similar to the former, but the former is generally protected with argon, suitable for welding non-ferrous metals; the latter in the argon generally mixed with carbon dioxide active gas, suitable for welding high strength steel and high alloy steel.
4.TIG, MIG are inert gas shielded welding, commonly known as argon arc welding. The inert gas may be argon or helium, but the argon is cheap, so it is commonly used, so that the inert gas arc welding is generally referred to as argon arc welding.
Tungsten inert gas protection welding is based on tungsten or tungsten alloy as the electrode material, under the protection of inert gas, the use of electrode and the parent metal (workpiece) between the arc of the hot metal base material and fill the welding process.
Shielded Arc Welding (abbreviation SMAW). The principle is: in the leather electrode and the base material between the arc, the use of arc thermal melting electrode and base metal welding method. The outer layer of welding rod welding, heat melting, with the arc stability, the formation of slag, deoxidation, refining and so on.
The welding power supply uses an alternating current welder or a DC arc welder with a descending characteristic. General use of AC arc welding machine, in particular, requires the use of arc arc stability of arc welding machine.
Main features: welding operation is simple; welding clamp light, easy to move; applicable to a wide range of operations.
Gas metal Arc Welding（ GMAW）
MAG welding: metal Active Gas Welding (Active Gas)
MIG welding: metal Inert Gas Welding, (Inert Gas: inert gas). According to the type of protective gas, generally divided into MAG welding and MIG welding. MAG welding using CO2, or mixing argon or oxygen in argon (these are called active gases). The use of CO2 gas alone is known as CO2 arc welding, which is distinguished from MIG welding. MIG welding using argon, helium and other inert gases. The principle is: in the small diameter consumption electrode (wire) and the mother material between the arc, with the protection of gas around the seal, melting base metal and welding wire welding method. Widely used in the operator's hand-held Welding Torch semi-automatic welding and robot welding and automatic welding field.
CO2 welding characteristics: welding speed; arc high efficiency; melting pool deep; high melting efficiency; a welding wire can be applied to a variety of thickness; welding quality after welding deformation is small; a welding wire can be applied to a variety of base materials The MAG welding features: In addition to the advantages of CO2 welding, the weld appearance of beautiful, less splash, double-sided forming welding, all-round welding is easy, suitable for high-speed welding. Pulse MIG (GMAW) welding characteristics: MIG method for aluminum welding, the general use of pulse control. Pulsed MIG welding can achieve minimal splashing through jetting. The appearance of the weld is beautiful, and the flattened welds are obtained. Compared with the pulsed MAG / MIG welding, the welding of the wire can also achieve the jet transition, so in the thin plate welding can improve the wire performance and wire cost reduction. Especially in the aluminum and alloy welding in the automation, robotization to play the superiority. Pulse MIG (GMAW) welding principle: the welding current to pulse current Ip and the base value of the current Ib in the form of periodic, in a wide range of welding current field can achieve droplet transfer.
Non-melting electrode gas protection arc welding, TIG welding, English is Tungsten Inert Gas (abbreviation TIG), also known as Gas Tungsten Arc Welding (abbreviation GTAW).
The principle is: TIG welding is argon and other inert gas environment, so that the tungsten electrode and the parent material between the arc, so that the base metal and the addition of welding materials melting, welding methods.
DC TIG welding: DC arc welding power supply as a welding power to the electrode is negative, the base metal is a positive welding method, widely used in stainless steel, titanium, copper and copper alloy welding.
AC TIG welding: AC arc welding power supply for the welding power, electrodes, base metal positive and negative polarity change. Electrode is positive (EP polarity), the electrode overheating consumption, can remove the base metal surface oxide layer, the so-called cleaning effect. The use of the cleaning effect, in the aluminum, magnesium and other welding widely used.
TIG (GTAW) welding characteristics: welding almost all industrial metals and alloys; welding quality, and high reliability. Welding well, do not have to clear the slag; no splash; smoke less; wide range for thin plate
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