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Micro-jet Cooling by Compressed Air after MAG Welding

Węgrzyn T., Piwnik J., Tarasiuk W., Stanik Z., Gabrylewski M.

Archives of Foundry Engineering

2016

Vol. 16, iss. 2

111--114

The material selected for this investigation was low alloy steel weld metal deposit (WMD) after MAG welding with micro-jet cooling. The present investigation was aimed as the following tasks: analyze impact toughness of WMD in terms of micro-jet cooling parameters. Weld metal deposit (WMD) was first time carried out for MAG welding with micro-jet cooling of compressed air and gas mixture of argon and air. Until that moment only argon, helium and nitrogen and its gas mixture were tested for micro-jet cooling.