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METHOD AND APPARATUS FOR MEASURING WELDING DIAMETER OF FRICTION STIR WELDING PART, AND METHOD AND APPARATUS FOR INSPECTING QUALITY OF FRICTION STIR WELDING
METHOD AND APPARATUS FOR MEASURING WELDING DIAMETER OF FRICTION STIR WELDING PART, AND METHOD AND APPARATUS FOR INSPECTING QUALITY OF FRICTION STIR WELDING
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机译:摩擦搅拌焊接件焊接直径的测量方法和装置,以及摩擦搅拌焊接质量的检查方法和装置
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摘要
PROBLEM TO BE SOLVED: To provide a method, an apparatus, etc. for measuring a welding diameter of a friction stir welding part which can measure a diffusion welding diameter at high accuracy by non-destructive measurement using ultrasonic waves.;SOLUTION: Measurement of a welding diameter of a welding part between upper and lower plates 21, 22 using a friction stir point welding method is performed as follows. First, an estimation value φA of a welding diameter is determined by ultrasonic measurement, and then a distance ▵T between a pressing position of a shoulder of a welding tool and a rear face of the upper plate 21 in friction stir welding is determined. When the distance ▵T exceeds a predetermined threshold, the estimation value φA is determined as a measurement value φA'' of the welding diameter. A suitable threshold is set and the welding diameter φA'' avoiding influence (false determination that the plates are welded but actually unwelded) exerted by a press-contact surface area PE is measured.;COPYRIGHT: (C)2013,JPO&INPIT
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