The total cost of GMAW

摘要

Successful suppliers and distributors are always looking for strategies to help their customers cut costs at all levels of their business. One strategy involves a total-cost-of-ownership approach that lets distributors analyze customer GMAW or MIG welding process variables including deposition effectiveness, power consumption, gas piping system, and shielding gas costs. Distributors should analyze these variables for all modes of GMAW such as short arc and spray arc metal transfer. Short arc transfer offers low thermal input to reduce part distortion and works in all positions. For example, using 0.045 in. diameter solid wire (E70S-3), a short arc occurs between 90-220 amp. A short-circuit is created when the tip of the wire touches the weld puddle. The welding machine output current then rises to a minimum 370 amp to separate the wire from the weld puddle.