To cooperate with the epidemic prevention and control work to ensure the health and safety of exhibitors, visitors and staff of the exhibition, the "2021 China Heat Treatment Industry Plant Managers Conference and China Heat Treatment Industry Association 35th Anniversary Celebration Meeting originally scheduled to be held on November 3-7 ", "The 20th Beijing International Heat Treatment Exhibition" postponed, the specific time will be notified separately.

​Bearing steel ingots are generally subjected to long-term diffusion annealing at a high temperature of 1200 ~ 1250 ℃ to improve carbide segregation. The atmosphere in the furnace should be controlled during hot working, the heating temperature of the billet should not be too high, and the holding time should not be too long to avoid serious decarburization. The final rolling (forging) temperature is usually between 800 and 900 ℃. If it is too high, it is easy to appear coarse network carbides, and if it is too low, it is easy to form rolling (forging) cracks. The finished rolled (forged) material should be quickly cooled to 650°C to prevent cementite from precipitating in a network on the grain boundary. If conditions permit, a controlled rolling process can be used.

This is the second bright annealing line constructed for Zhaoqing hongwang stainlesss steel. Bright annealing line is designed for annealing stainless steel strip processed by zhaoqing cold rolled 20-hi rolling mill which was commissioned in zhaoqing hongwang.

A company video of introduction for guangdong strong metal technology Co.,ltd.