Forging method of BG801 steel bearing ring

• Main Authors: XIA YUNZHI, ZHOU SHUMEI, YU YIHANG, ZHAO KAILI, MU QIANG, SUO ZHIPENG, LIU MING, WU YUCHENG, LIU XIULIAN, AN MIN, WANG ZHAOHE, FU ZHONGYUAN, YU AOHAI, WANG WEIQI
• Format: Patent
• Language: Chinese; English
• Published: 17.04.2020
• Subjects: CHEMISTRY; FORGE FURNACES; FORGING; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; HAMMERING; 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; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING

The invention discloses a forging method of a BG801 steel bearing ring, and relates to the forging method of the BG801 steel bearing ring. The method aims to solve the problem that the structure performance of a forged piece is influenced due to the fact that overheating or overburning is prone to occurring in an existing forging method of a BG801 steel bearing ring. The method comprises the stepsthat 1, a blank is heated, wherein an initial forging temperature of 1,030 DEG C to 1,070 DEG C; 2, a forging die is preheated before forging, and then forging is conducted, wherein a final forging temperature is larger than or equal to 900 DEG C; and 3, ash cooling is conducted on the forged piece, and then annealing is conducted, so that forging is completed. The forged BG801 steel bearing ringis good in structure performance and uniform in grain distribution, the grain size is larger than 5, and the hardness of the annealed forging meets the requirement that the hardness is smaller than or equal to HB390. The meth