Water cooled welding gun

Details Water cooled welding gun Water cooled welding gun

B - Operations, Transporting

23

K

327/53

B23K 9/16 (2006.01) B23K 9/29 (2006.01)

Patent

CA 1188375

ABSTRACT A water cooled welding gun of the type having a rigid metal tubular member through which a welding wire element and shielding gas are adapted to pass has a metal gas diffuser remov- ably mounted upon one end of the tube member. The diffuser includes: a first tubular portion including a gas and welding wire receiving chamber in open communication with the tube member and coaxial with the major axis of the tube member and a second tubular portion of a lesser diameter than the first portion and having a welding wire tip supporting opening therethrough and coaxially communicating with the passage in the first portion. A welding wire tip member is removably mounted within the opening in the second tubular portion of the diffuser and has an end pro- jecting longitudinally beyond the second tubular portion. A welding wire opening is formed coaxially through the welding wire tip member. A tubular nozzle is supported at one end upon the first tubular portion of the diffuser and has an open end project- ing longitudinally beyond the welding tip. The nozzle coacts with the second tubular portion of the diffuser to define an annular gas chamber coaxial with the major axis of the diffuser. Axially inclined passages formed in the tubular portions of the diffuser communicate the gas chamber of the first tubular diffuser portion with the annular gas chamber, the passages being inclined to the major diffuser axis from 10° to 20°.

413979

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