| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an equipment for a gas pressure welding for a reinforcing bar capable of performing an even finish and high reliability. SOLUTION: An equipment is composed of an acetylene gas flow rate sensor 34, a display panel 37 informing a flow rate being within a reasonable range, a torch 1 having a start button 12, a hydraulic cylinder 23 and a hydraulic pump 24, a hydraulic sensor 28 measuring a pressure of the hydraulic cylinder, a control unit 35 automatically performing a gas pressure welding process to heat a reinforcing bar from the instruction of a display panel by obtaining a flow rate signal of the acetylene gas from the flow rate sensor within the prescribed range, to press the reinforcing bar to the prescribed upper limit pressure by obtaining a start signal and to heat the reinforcing bar again to the prescribed upper limit pressure by obtaining a signal lowered to the prescribed lower limit pressure by the inteneration of the heated part, and a recording unit 28 recoding a change of the acetylene gas flow and the pressure.
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