Guangzhou EACO electric equipments Blog

DC TIG Welding Machines TIG (tungsten inert gas) welding is used to make precise, critical welds when joining metals such as mild steel, aluminum, or stainless steel.  TIG welding  is a two handed process (one hand holds the torch while the other feeds filler metal) and commonly involves a foot pedal or fingertip remote to control the arc amperage while welding. Like MIG welding, a shielding gas (typically argon) is required. TIG Welding Machines   Specification Parameters TIG 305 Rated Input Voltage(V) AC220V AC380V Power Frequency(Hz) 50/60Hz Phase  1 3 Rated Input Current(A) 25(TIG), 36(MMA) 16(TIG), 21(MMA) Rated Input Power(KVA) 5.5(TIG), 7.9(MMA) 10.5(TIG), 13.8(MMA) Rated No-load Voltage(V) 69 69 Welding Current(A) 15-180 15-300 Rated Duty Cyvle%(40℃) 100% 60% Protection Class IP21S Dimensions(mm) 530X250X430 Weight(Kg) 16.8

The arc starting of argon arc welding adopts the arc starting method of high voltage breakdown. First, high frequency and high voltage is applied between the electrode needle (tungsten needle) and the workpiece to break down the argon gas to make it conductive, and then supply a continuous current to ensure the arc stability. 160V TIG Welding Machines The working principle of the argon arc welding machine in the main circuit, auxiliary power supply, drive circuit, protection circuit, etc. is the same as that of the manual arc welding machine. No more description here, but focus on the unique control function and arc starting circuit function of the argon arc welding machine. Hand switch control The argon arc welding machine requires the argon gas to come first, and the current to go first (relatively speaking), this is achieved by hand switch control. When the main switch of the welding machine is closed, the auxiliary power supply works and provides 24V direct current to the control c

1. The welding current is different The current in the DC argon arc welding process is always the same. In the pulse argon arc welding process, the welding current has a base value and a peak value alternately. DC Welding Machine 2. The heating and cooling speeds are different In pulse argon arc welding, each welding spot is heated and cooled quickly, the molten pool metal condenses quickly during the welding process, and the high temperature residence time is short, which can reduce the tendency of heat-sensitive materials to crack during welding. However, the heating and cooling of DC argon arc welding are slow. 3. The scope of the heat affected zone is different Compared with DC argon arc welding, pulsed arc can use lower heat input to obtain larger penetration depth, so under the same conditions, it can reduce the heat-affected zone. When welding heat-sensitive materials, reducing the pulse current passing time and the base current value can reduce the range of the heat-affected zo