For fabricators that want to improve results when MIG welding with soft aluminum wires, as well as for those who need to improve reliability when feeding smaller diameter wires over long distances, Tweco, an ESAB brand, has launched the MXH 315PP and MXH 420W PP push-pull torches.
These torches maintain constant wire tension between two sets of drive rolls: one set in the feeder and one set in the MXH torch, according to the company. As a result, Tweco MXH solves common feeding problems such as wire slippage, erratic arc performances, wire burning back to the contact tip, cold lap and bird nesting at the feeder rolls.
Tweco offers the MXH torch in two versions, both of which feed 0.035 to 1/16 in. diameter wires at speeds of 96 to 709 ipm and come in cable length options of 20 or 33 ft. The gas-cooled MXH 315PP has a rated output of 270A at 60 percent duty cycle with mixed gas and 310A at 60 percent with CO2. The water-cooled MXH 420W PP has a rated output of 400A at 100 percent duty cycle with mixed gas and 430A at 100 percent with CO2. There are two torch neck options, a straight neck and a 45-degree bent neck which rotates 360 degrees.
The MXH sports a comfortable pistol grip and well-balanced design. The operator can manipulate the torch with less fatigue, as well as adjust wire feed speed at the torch with a potentiometer for even more control. The reliable drive system ensures excellent feeding properties. It has minimal, easily exchangeable parts that are easy to access, including the quick change of feeder rolls without tools.
These torches offer “plug-and-play” simplicity when connected to ESAB Robust Feed U6, Robust Feed U82 and Aristo Feed 3004 wire feeders, premier systems for advanced MIG performance. They are also compatible with most competitive power source/feeder systems when used in combination with the Syntronic 3 synchronization device.