Influence of butt and T-joint preparation in laser arc hybrid welding

• Using a hybrid CO2 laser/MAG welding process, the weldability of butt and T joints (fillet welds) in mild steel (0.056%C, 0.61%Mn) plate of 8 mm thickness, as received from laser or mechanical cutting, was investigated. A 6 or 17 kW laser was used in conjunction with a conventional MIG/MAG welding gun and a mixture of helium and argon with carbon dioxide or oxygen as the shielding gas. Ranges of welding speeds, wire feed rates, stick out, welding current and voltages, arc to laser beam distances, and shielding gas compositions were used. The welds were assessed by appearance and shape, and by measurements of tensile, impact and bending properties

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)

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Manufacturing Systems Engineering

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