Steel production method for improving rack machining performance

• Main Authors: WANG YING, DENG WEI, ZHOU LEI, PENG XUEYI
• Format: Patent
• Language: Chinese; English
• Published: 04.08.2023
• 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; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a steel production method for improving the machining performance of a rack, and relates to the technical field of steel production, cogging heating is conducted, specifically, the heating temperature ranges from 950 DEG C to 1270 DEG C, and the total heating time is longer than or equal to 240 min; high-pressure water is adopted for descaling, and the pressure is larger than or equal to 13 MPa; second-fire rolling heating, wherein the heating temperature is 980-1240 DEG C, and the total heating time is larger than or equal to 180 min; second-fire rolling dephosphorization is conducted, specifically, high-pressure water is adopted for descaling, and the pressure is larger than or equal to 13 MPa; finish rolling: the finish rolling temperature is 800-900 DEG C; ultrasonic flaw detection and magnetic flux leakage detection are carried out, wherein the ultrasonic flaw detection precision meets the A-level requirement of GB/T 4162. The machining performance of the rack is improved by optim