| 摘要 |
A torch cable for carbon dioxide gas welding which maximizes stability and welding efficiency by cooling heat of a power line for power transmission generated during welding is provided. In a torch cable comprising a CO2 supply pipe(20) made from a synthetic resin, a spring liner(50) inserted into the CO2 supply pipe to guide a welding wire(60), a power line(30) which is inserted into the CO2 supply pipe and made of a copper wire and an aluminum wire that is lighter than the copper wire, and an insulation covered wire(10) which is covered on an outer face of the CO2 supply pipe, and in which a gas supply hole is formed such that gas flowing through the gas supply hole cools the torch cable, a torch cable(7) for carbon dioxide gas welding is characterized in that: the power line made of the copper wire and the aluminum wire that is lighter than the copper wire is installed at an inner side of the CO2 supply pipe; a passage(21) for transferring CO2 gas is formed between the power line and the CO2 supply pipe; and a covered member(31) made from a synthetic resin and rubber is additionally installed at an outer side of the liner spring.
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