摘要
试验研究了终轧905~930℃,空冷,终轧905~930℃,穿水返红至675~707℃,终轧845~870℃,穿水返红至661~698℃对Φ36 mm GCr15轴承钢棒材网状碳化物的影响。结果表明,轧后空冷的GCr15轴承钢棒材的网状碳化物级别较高为3级;轧后棒材经穿水后返红温度为661~707℃时,网状碳化物为1.5~2.5级,能满足冷加工用途GCr15轴承钢的要求(网状碳化物≤2.5级);低温精轧和降低终轧温度能明显改善GCr15轴承钢热轧材的网状碳化物。
The effect of end-rolling at 905 - 930 ℃, air cooling, end-rolling at 905 - 930 ℃, cooling to 675 - 707 ℃ by crossing water, and end-rolling at 845 - 870 ℃ , cooling to 661 - 698 ℃ by crossing water on carbide network in qb36 mm hot-rolled bar of bearing steel GCrl5 has been tested and studied. Results show that the rating of carbide network in bearing steel GCrl5 bar air-cooling after rolling is 3, higher than requirement, the rating of carbide network in bar cool- ing to 661 -707 ℃ by crossing water after rolling is 1.5 - 2. 5 to meet the requirement for bearing steel GCrl5 for cold working service （ rating of carbide network -〈2. 5 ） ; and the carbide network in hot-rolled products of bearing steel GCrl5 may be obviously improved by finishing rolling at lower temperature and decreasing end rolling temperature.
作者
邓湘斌
胡昭锋
冯杰斌
张正波
叶德新
Deng Xiangbin Hu Zhaofeng Feng Jiebin Zhang Zhengbo Ye Dexin(Shaoguan Co Ltd, Baosteel Special Steel, Shaoguan 512123)
出处
《特殊钢》
北大核心
2017年第4期57-59,共3页
Special Steel
关键词
GCrl5轴承钢
Ф36
mm热轧材控轧控冷
网状碳化物
Material Index Bearing Steel GCrl5, Ф36 mm Hot-Rolled Products, Controlling Rolling and Controlling Cooling,Carbide Network
