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The use of compressed air for micro-jet cooling after MIG welding

Hadryś D., Węgrzyn T., Piwnik J., Stanik Z., Tarasiuk W.

Archives of Metallurgy and Materials

2016

Vol. 61, iss. 3

1405--1408

The material selected for this investigation was low alloy steel weld metal deposit (WMD) after MIG welding with micro-jet cooling. The present investigation w*as aimed as the following tasks: obtained WMD with various amount of acicular ferrite and further analyze impact toughness of WMD in terms of acicular ferrite amount in it. Weld metal deposit (WMD) was first time carried out for MIG welding with micro-jet cooling of compressed air and gas mixture of argon and air. Until that moment only argon, helium and nitrogen were tested as micro-jet gases for MIG/MAG processes. An important role in the interpretation of the results can give methods of artificial intelligence.