| 摘要 |
PROBLEM TO BE SOLVED: To provide arc an welding equipment with which the welding wire extension is easily adjusted and an excellent feeding characteristics of the wire and an excellent stability of an arc are available. SOLUTION: An insulation guide 5, whose bending strength at room temperature is 300 MPa or greater, thermal expansion coefficient is 8.0×10-6/ deg.C or smaller, thermal conductivity is 100 W/(m.K) or greater, thermal shock resistant temperature is 300 deg.C or higher, and electric resistance is 101Ω.cm or greater, is provided on the side of a welded base material 6 of the power feeding tip 4 of an arc welding equipment 1 where a welding wire 3 is fed via a power feeding tip 4 provided on a torch body 2 while an electric current is continuously supplied.
|
