Kabushiki Kaisha Kobe Seiko Sho

Tomoyuki Tachibana

Norio Masaie

Hiroyuki Shimizu

Kazuhiko Ito

Akira Matsuguchi

Yoshikazu Sasa

Atsushi Furuya

Yasuo Araike

Koji Seita

A flux-cored wire for arc welding, wherein a specific surface area, which is defined by the equation of {(Sa/Sm)-1} where Sm is an apparent surface area and Sa is a real surface area in a region to be measured on a surface of the wire, is in the range of from 0.005 to 0.035; and molybdenum disulfide is stuck on the surface of the wire in an amount of from 0.004 to 0.24 g/m.sup.2, and no plating is applied on the surface of the wire. Moreover, a solid wire for arc welding wherein the specific surface area {(Sa/Sm)-1} is in the range of from 0.0005 to 0.05; and molybdenum disulfide is stuck on the surface of the wire in an amount of from 0.001 to 0.5 g/m.sup.2, and no plating is applied on the surface of the wire.

Flux-cored wire and solid wire for ARC welding

A lubricant for wire feeding and wire drawing which comprises polytetrafluoroethylene powder, 0.5-40 .mu.m (or 0.5-20 .mu.m) in particle diameter, dispersed in water or an aqueous dispersion containing polytetrafluoroethylene powder, 0.1-0.4 .mu.m in particle diameter. A welding wire whose surface is coated with a lubricant mentioned above and a welding wire which has been drawn by the aid of a lubricant mentioned above.

Lubricant for wire feeding and wire drawing and a welding wire

A flux-cored wire for arc welding, wherein a specific surface area, which is defined by the equation of {(Sa/Sm)-1} where Sm is an apparent surface area and Sa is a real surface area in a region to be measured on a surface of the wire, is in the range of from 0.005 to -0.035; and molybdenum disulfide is stuck on the surface of the wire in an amount of from 0.004 to 0.24 g/m.sup.2, and no plating is applied on the surface of the wire. Moreover, a solid wire for arc welding wherein the specific surface area {(Sa/Sm)-1} is in the range of from 0.0005 to 0.05; and molybdenum disulfide is stuck on the surface of the wire in an amount of from 0.001 to 0.5 g/m.sup.2, and no plating is applied on the surface of the wire.

Flux-cored wire and solid wire for arc welding

Growing community of inventors

Fujisawa, Japan

Tomoyuki Tachibana