Production method of X65M-grade pipeline steel plate with thin specification and high crack arrest performance

• Main Authors: LI FULEI, KONG YA, HAN QIBIAO, WANG PENGFEI, WANG ZHENHUA, GONG PIHAI, ZHU SHIPENG, WANG XING
• Format: Patent
• Language: Chinese; English
• Published: 07.04.2020
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a production method of an X65M-grade pipeline steel plate with thin specification and high crack arrest performance. The method comprises the following steps of KR desulfurization, converter smelting, LF, RH, CCM, casting blank cutting and sizing, slow cooling for 48 h, plat...