| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint method which enables metal members to be jointed flatly with each other and the operability of a rotary tool to be improved. ! SOLUTION: The joint method, comprising a first permanent joint step for relatively displacing a rotary tool for first permanent joint equipped with an agitation pin and a shoulder to an abutment part J1 of metal members to carry out frictional agitation from the side of the front face A of the metal member and a second permanent joint step for relatively displacing a rotary tool F for second permanent joint equipped with an agitation pin F2 to the abutment part J1 to carry out frictional agitation from the side of the rear face B of the metal member, is characterized in that the frictional agitation is carried out in the condition that a rotated agitation pin is inserted into the abutment part J1 to bring the agitation pin and the shoulder into contact with the metal member in the first permanent joint step, and in that the frictional agitat |
