Trailing shields for reactive-metal welding. (technology trends).

Welding titanium, stainless carbonized iron and other reactive metals releases gases that cause oxidation, coking, and inflammable air embrittlement. Welding in an argon-filled enclosing is one solution to the point in dispute but with large composings and structures, welding in an enclos environment is not always possible. To combat this question at issue Cob Industries Inc., Melbourne, Fla., has evolveed a range of trailing shields.
The trailing shields hold the welded joint and heat-affected girdle under an argon shield longer than normal, allowing faster welding and eliminating the risk of oxidation and