WELDING TORCH GAS SHUTOFF DEVICE Russian patent published in 1997 - IPC

Abstract RU 2095213 C1

FIELD: mechanical engineering; welding; gas shielding arc welding. SUBSTANCE: gas shutoff device is made in form of aluminium or aluminium alloy tube coated with multiphase oxide layer. Oxide layer is composite alloy consisting of aluminium oxide Al₂O₃ and silicon oxide SiO₂. EFFECT: improved reliability of shutoff device, increased service life of welding torch operating on currents exceeding 200 A, prevention of double arcing, reduced weight of welding torch. 1 dwg

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RU 2 095 213 C1

Authors

Panarin V.I.

Zabrodskij Ju.A.

Dates

1997-11-10—Published

1996-02-21—Filed