Joining quality management method and joining quality management apparatus

Abstract

Provided is a joining quality management apparatus which allows for simple and speedy inspection of a joining state of a joint of a friction welded component obtained by cutting off a burr on the peripheral side of the joint occurring in friction welding. The joining quality management apparatus is provided with an imaging means (3) which images the peripheral surface of the joint (a) of the friction welded component (A), an extracting means (4) which extracts dark pixels having luminance values not higher than a reference luminance value from image data captured by the imaging means (3), a number-of-pixels summing means (5) which sums the number (N) of the dark pixels extracted by the extracting means (4), and a determination means (6) which determines whether a joining quality satisfies a management reference. The determination means (6) determines that the management reference is satisfied when the number (N) of the dark pixels is not larger than the reference number (N0) of pixels, but determines that the management reference is not satisfied when the number (N) is larger than the reference number (N0) of pixels.

Description

technical field [0001] The present invention relates to a joining quality management method and a joining quality management device suitable for ensuring the quality of a friction welding member. Background technique [0002] The rod-shaped members (hereinafter referred to as "suspension frame members") that make up the suspension frame, such as the upper link, lower link, and torsion bar, are made of steel. Material. For example, Patent Document 1 and Patent Document 2 disclose suspension frame members in which aluminum alloy end members are frictionally bonded to both ends of an aluminum alloy tubular member. [0003] In order to confirm the firmness and joint strength of the frictional crimping part, a tensile test etc. is required to confirm the breaking strength, but this method is only used for sample inspection. In addition, in terms of the nature of friction welding, although oxides and the like on the joint surface are discharged as burrs, the burrs are also gener...

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Problems solved by technology

[0003] In order to confirm the firmness and joint strength of the friction crimping part, it is necessary to perform a tensile test, etc. to confirm the breaking strength, but this method is only used for sample inspection

In addition, in terms of the nature of friction welding, although the oxides on the joint surface become burrs and are discharged, the burrs are also formed on the inner diameter side, so it is not easy to inspect with ultrasonic waves or X-rays.

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