I learned from Baosteel Group Guangdong Shaoguan Iron & Steel Co., Ltd. steel mill steel production line was informed of bearing steel plant produced by the last year's average total oxygen content 8ppm (one millionth) dropped to an average of 6.04ppm, best achieve 4.1ppm; bearing steel production to achieve 5 furnace / casting times, costs can be reduced by about 15 yuan / ton.

The total oxygen content of bearing steel is an important measure of bearing steel quality. With the reduced oxygen content, the content of oxide inclusions in steel decreases, which can extend bearing steel fatigue life and life. To further reduce the oxygen content of bearing steel, Shaoguan Iron & Steel research from the end of last year, set up a special research team.

Baoshan Iron and Steel support team for the problem experts proposed in the study site, the plant immediately organizational improvement, and writes some good methods of operation technical operation, the formation of standards. Under our joint efforts, the oxygen content of the plant production of all steel products have reached the technical requirements. Among them, the average oxygen content of GCr15 bearing steel was 6.04ppm, oxygen content ≤8ppm ratio of 95%, the best reach 4.1ppm.

On special steel production, the plant cost, quality catch together. For small stove number of times before casting bearing steel production, resulting in higher cost, the plant with Baosteel Special Steel support team together research organizations, to improve the number of rhythm Cast furnace refractory erosion control and conduct research to develop the prevention and control measures. Cast in improving furnace number, the plant also from the smelting, LF refining, RH vacuum treatment furnace, continuous casting slab quality production and carried out the whole process of analysis and verification. Currently, the plant successfully completed bearing Cast steel 6 "5 furnace continuous casting" production, refractory erosion is normal, steel quality and auxiliary casting refractory fully able to meet production requirements.