MAGNETIC PARTICLE INSPECTION DEVICE FOR RECTANGULAR STEEL PRODUCT AND CONVEYOR DEVICE FOR MAGNETIC PARTICLE INSPECTION OF RECTANGULAR STEEL PRODUCT

摘要

PURPOSE: To provide a magnetic particle inspection device and a conveyor device for magnetic particle inspection with which deterioration of detection sensitivity for surface defects of an angular part of an angular steel material can be prevented, and with which they can be detected continuously with surface defects of the whole body of the steel material. ;CONSTITUTION: A conveyor device for magnetic particle inspection for angular steel materials comprises a coil magnetizer 5 comprising a rotary magnetizing coil for giving a magnetic field which rotates about an axis almost in the same direction as that of an axial center of the angular steel material, and a DC magnetizing coil wound to surround an outer circumferential surface of the angular material, and an interpole magnetizer 6 for magnetizing the angular material between magnetic poles provided continuously along the length of the angular steel material. It also comprises conveyor chains 8 having intermittently provided support plates 10 having V-letter cuts for installing angles of the angular steel material with the surfaces of the angular steel material inclined, and plural drive wheels for driving the conveyor chains 8, and the conveyor chains 8 let either or both of the coil magnetizer 5 and the interpole magnetizer 6 pass.;COPYRIGHT: (C)1993,JPO&Japio