Automated semiconductor electronic pipe automatic orbital welding machine has become the standard method of connection for high integrity gas and liquid systems used in the semiconductor and pharmaceutical industries. These systems are extremely pure and sealed. Since the mid-1980s, the entire specialty industry has supported valves, fittings, regulators, gauges and other components used in orbital welding and high purity applications. For tube welding in high purity applications, only fully enclosed horns can be used.
Successful automated orbital GTA welding is 100% repeatable as long as the operator monitors the variables and performs periodic samples and checks for complete penetration. It is a major skill to notice that variables have changed and can easily be missed. Operators need training and experience to successfully produce acceptable welds consistently.
Successful automated orbital GTAW welding relies heavily on the refinement of several key variables related to the programming of the welder and the setting of the “welding head”.
Maintenance of the weld head is often a factor in the repeatability of successful welding. The inside of the welding head may be burnt due to improper use. Carbonization is a carbon deposit that conducts electricity and shorts current from tungsten. The weld head contains a precision planetary gear system that wears over time. Appropriate cleaning and maintenance is required.
Successful orbital welding also depends on the use of high quality tubing. Usually only 316L stainless steel tubing (non-pipe) and fittings are used for automatic rail GTAW welding and are available from many professional manufacturers.
