角鋼片用蛍光自動探傷装置
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概要
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To detect surface flaws of square steel billets, a study was made about automatism of fluorescent magnetic powder method.In 1975, this automatic inspection equipment was completed by development of new detector and marker. A light from fluorescent magnetic powder over flaws goes into photo-multiplier through the optical lens, cross slit, mirror. The light is changed to electric signal. Rotating slit on drum scans billet surface continuously. And by feed velocity of billet, all the surface of square billet canbe inspected. This slit can pass the light from fluorescent magnetic powder on the flaws. The electric signal of flaws works as a spray marker.
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