Method for rolling electroslag type superthick 15CrMoR steel plate

• Main Authors: YIN WEIJIANG, QU ZHENG, LONG JIE, NIU HONGXING, ZHAO WENZHONG, WANG TIANTIAN, DENG JIANJUN
• Format: Patent
• Language: Chinese; English
• Published: 15.09.2017
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

The invention discloses a method for rolling an electroslag type superthick 15CrMoR steel plate. The production method comprises the procedures of heating of an electroslag ingot; cogging of the electroslag ingot; clearing of an electroslag blank; heating of the electroslag blank; and rolling of the electroslag blank. The method is suitable for rolling of the superthick steel plate high in piece weight; the indentation defect generated on the surface of the steel plate is reduced; compared with the traditional steel plate rolling mode that the thickness of 6 mm is reserved, 1-2 mm is reduced; the yield of the steel plate is greatly increased; iron sheets on the surface of the steel plate are removed thoroughly, good surface quality is achieved, and trimming and grinding amount in the subsequent finishing process is reduced; and mechanical properties of the steel plate are that the tensile strength Rm ranges from 450 MPa to 580 MPa, the yield strength Rp0.2 is greater than or equal to 275 MPa, the elongation A