PURPOSE: To prevent the degradation of welding heat affect degree and to improve the welding efficiency at a same time, in the time for welding the steel base metal with the submerged arc welding or the gas-shielded metal-arc welding.
CONSTITUTION: In the time for welding the steel base metal with the submerged arc welding or the gas-shielded metal-arc welding, a shielding box moving following to the welding torch is attached, and either one hand or both hands of an air of the pressure 1-7kg/cm2 (G), the flow rate 50-650l/min. or an air of the pressure 1-6kg/cm2 (G), the fluid 30-150l/min, and a fog like mixture of water of the pressure 0.5-4kg/cm2 (G), the flow rate 40-1500ml/min is brought to let on the bead just after welding and the cooling is executed.
KANETANI KEN
IESAWA TORU
| JPS5288240A | 1977-07-23 | |||
| JPS561185A | 1981-01-08 | |||
| JPS61289978A | 1986-12-19 | |||
| JPS6216884A | 1987-01-26 |