An autogenous weld is produced by GTAW and can be used to test material weldability and gas shield usage, and to set welding parameters.

• 可以用氩弧焊（GTAW)制备气焊缝，这种焊接方法可以用来测试材料的可焊接性，检查气体保护的使用以及焊接参数的设定。