Heating temperature control method for continuous casting circular tube blank for phi 200mm GCr15 bearing

The invention discloses a method for controlling the heating temperature of a continuous casting round tube blank for a phi 200mm GCr15 bearing, which comprises the following steps of: heating the tube blank in a heating furnace, checking and controlling the temperatures of a preheating section, a heating section and a soaking section of the heating furnace according to the following control ranges: the preheating section I is less than or equal to 800 DEG C, the preheating section II is 800-900 DEG C, the heating section I is 900-1100 DEG C, the heating section II is 1100-1150 DEG C, and the soaking section I is 1150-1180 DEG C; the soaking section II is 1150-1180 DEG C; the total heating time is controlled to be 5.5 hours, the first and second preheating time is 2 hours, the first and second heating time is 1.5 hours, and the first and second soaking time is 2 hours; the heating time deviation of each section is +/-10min. The invention aims to provide a heating temperature control method for a continuous ca