摘要
通过显微组织检验和硬度检测,研究了两种冷镦钢钢丝在退火过程中组织和硬度的变化。结果表明:SWRCH6A钢在710℃退火时无法得到多边形的铁素体。SWRCH15A钢在630℃退火20 min时完成再结晶;拉拔材硬度随退火温度的提高逐渐降低,退火温度在630~710℃,材料的硬度值在60.9~67.2 HRB。
Changes in microstructure and hardness of two kinds of cold heading steel wires during annealing were studied by microstructure examination and hardness testing. The results show that： polygonal ferrite can not be obtained in SWRCH6A steel after annealing at 710℃. Recrystallization of SWRCH15 A steel is completed after annealing at 630 ℃ for 20min; the hardness of drawing material decreases with the increase of annealing temperature,and when the annealing temperature is 630-710 ℃, the hardness value of the material is 60.9-67.2 HRB.
出处
《热加工工艺》
CSCD
北大核心
2017年第4期218-220,共3页
Hot Working Technology
关键词
冷镦钢钢丝
退火工艺
组织
硬度
cold heading steels wire
annealing process
microstructure
hardness
