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METHOD FOR IMPROVING QUALITY OF INNER SURFACE OF HOT SEAMLESS STEEL TUBE AND MANDREL MILL
METHOD FOR IMPROVING QUALITY OF INNER SURFACE OF HOT SEAMLESS STEEL TUBE AND MANDREL MILL
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机译:改善热无缝钢管和曼德尔磨机内表面质量的方法
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摘要
PURPOSE: To improve the quality of inner surface and to reduce the expense for repairing the inner surface. ;CONSTITUTION: A head 9 providing a high pressure water jetting nozzle is inserted into a tube stock 2 to be rolled. The oxide scale of the inner surface of the tube stock 2 to be rolled is removed by moving either one side or both sides of the head 9 and the tube stock 2 to be rolled in the axial direction of the tube stock. The tube stock 2 to be rolled that the oxide scale is removed is rolled with the mandrel mill 1.;COPYRIGHT: (C)1993,JPO&Japio
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