A REVOLUTION IN WELDING

摘要

Researchers from the CSIRO and the Cooperative Research Centre for Welded Structures (CRC-WS) have developed a welding process for corrosion-resistant metals that is significantly faster; cheaper and easier than current practices, and produces high-quality joints. The patented process is an elaboration of standard gas-tungsten arc welding (GTAW), and uses a specially designed torch that establishes and maintains a 'key-hole' at the joint. The weld then proceeds zipper-like, with the melted sides of the keyhole fusing at the back as the torch melts new material in front of it.