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    • 4. 发明专利
    • ABRASION PROOF LINER AND MANUFACTURE THEREOF
    • JPH11320124A
    • 1999-11-24
    • JP14659198
    • 1998-05-11
    • TOBATA SEISAKUSHO KKNIPPON STEEL CORP
    • DAITOKU KAZUMITAKEDA HIROO
    • B65G11/16B23K20/00
    • PROBLEM TO BE SOLVED: To improve a joining strength, and prevent an exfoliation arising from an impact load or deformation during usage so as to elongate a useful life by applying a diffusion bonding of a hard metal plate, which becomes an abrasion proof face, and an main substrate to be welded via an inserting plate. SOLUTION: A W-Co system hard metal abrasion proof plate 11, an anoxia copper plate 12, oxygen content of which is 1,000 ppm or less and is acting as a stress easing member, and a steel plate 13, which being a main substrate to be welded, are piled in succession, and are heated to 800-1,000 deg.C in vacuum with a pressure of 30 pa or less, or under an inert gas atmosphere. Then, a pressure welding is carried out for 20-90 minutes, at 0.1-20 Mpa to make it to be an abrasion proof liner 10. In that case, a width ratio of the insert plate 12 against the hard metal 11 is made to be 0.2-0.5. Also, a projection 16 is provided on a face of the welding substrate 13, where the substrate 13 contacts with an objective article 15, which being a sintered ore transferring chute and the like, so as to make an adhesion, fixing by a stud welding easy. Further, an insulation article 17 is applied to a side face of the abrasion proof plate 10 and a peripheral part of the bottom face for avoiding an electric conduct between the adjacent abrasion plates 10 at the welding time.