Argon welding use the argon as a protective gas welding technique,so also called argon gas welding. That is, around the arc of the argon gas through the air isolated from the welding area,to prevent oxidation of the weld zone.
Argon welding technique is based on the general principle of arc welding using argon for metal welding consumables, welding consumables by high current to be welded on a substrate to form a liquid melt into the pool, make welded metal and weld a welding material to achieve metallurgical bonding technique, the molten solder at a high temperature in an argon gas continuously sent, does not make the welding material and the air in contact with oxygen, thereby preventing oxidation of the welding material, the welding can be stainless steel, iron-based metal hardware.
According to the different welding electrodes, it can be divided into MIG and TIG two kinds of non-consumable electrode.
Non-MIG working principle and characteristics: non-TIG welding is an arc in a non-consumable electrode (usually tungsten) and the workpiece burning around the welding arc and the metal does not flow through a chemical reaction Inert gas (commonly argon), the formation of a protective hood, the extreme portion of the tungsten, and the pool of high temperature metal arc surrounding the heat affected zone is not in contact with the air, to prevent oxidation and absorption of harmful gases. Welded joints to form a dense, very good mechanical properties.
MIG working principle and features: wire fed through wire wheels, tip conductivity between the base metal and the welding arc, so that the wire and base metal melted and inert gas argon arc and molten metal to welded. It GTAW difference: one is to make the wire electrode, and was constantly fill the bath melts, forming a weld after condensation; Another is the use of protective gas, with MIG technology applications, protection argon gas from a single gas mixture developed extensive variety of applications, such as melting when called argon or helium as a shielding gas inert gas shielded arc welding (MIG internationally referred to as welding); inert gas When the oxidizing gases (O2, CO2) gas when mixed shielding gas, or CO2 or CO2 + O2 gas mixture for the protection of gas, referred to as metal active gas shielded arc welding (referred to as the international MAG welding). See its mode of operation, is currently the most widely used and semi-automatic MIG welding argon-rich gas mixture, followed by automatic MIG.
Post time: Sep-17-2019