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    • 10. 发明专利
    • PRODUCTION OF STAINLESS CLAD STEEL
    • JPS6386817A
    • 1988-04-18
    • JP23293486
    • 1986-09-30
    • KAWASAKI STEEL CO
    • AZUMA TAKESHIKATAYAMA YASUSHI
    • B21B1/22C21D8/02C21D9/46
    • PURPOSE:To prevent the diffusion of carbon from a high carbon steel to stainless steel and to prevent the development of cracking in the high carbon steel at the time of cold rolling by coating Ni film having the specific thickness on joining face in the three layer clad steel, to hot-roll and heat-treating at the limited condition after winding t the specific temp. CONSTITUTION:In the production of three layer stainless clad steel using carbon tool steel as core material and stainless steel as claded material, the Ni film is coated on the joining face at 0.2-1% of clad steel thickness after clading as the thickness thereof, to hot-roll and wind, so that the coil temp. becomes to 600-650 deg.C. Next, the hot-rolled strip is heat-treated at the inside of range, encircled by the coordinates A, B, C, D, E, F, H, H in the coordinate putting the heating temp. and holding time as coordinate axes respectively. In succession, it is cold-rolled. In this way, the stainless clad steel can be produced from a large ingot or slab.