Process for cooling high-hardenability high-carbon-chromium bearing steel forge piece after forging

A cooling process after forging of a high-hardenability high-carbon-chromium bearing steel forge piece comprises the following steps that after finish forging of the forge piece is completed, the forge piece is transferred into a cooling medium to be cooled, and the transfer time from finish forging discharging of the forge piece to transferring of the cooling medium is controlled within 30 s; entering a cooling step for rapid cooling, stopping cooling when the temperature of the forge piece is lower than 650 DEG C, and moving out the forge piece; the removed forge piece is returned to the furnace for heat preservation, and the temperature of the heating furnace is 600-650 DEG C; the remelting heat preservation time is 2-2.5 h; and after heat preservation is finished, the forge piece is moved out and naturally cooled. According to the scheme, bad network carbide structures generated by too slow cooling after forging can be eliminated, martensite structures are prevented from being generated, and the microcrac