Carbon steel bright heat treatment are mainly free-cuttingsteel and other low-carbon steel bright annealing, as well as bright demagnetization.
碳钢的光亮热处理主要有易切削钢等低碳钢的光亮退火处理以及光亮退磁。
2
Reach a conclusion, in now available technological condition, control suitable technological parameter so will produce batch Y45S20 free-cuttingsteel.
结论表明，在现有工艺条件下，控制合适的工艺参数可批量生产Y45S20易切钢。
3
The general domestic and aboard situation for free-cuttingsteel is reviewed. The kinds for free-cuttingsteel and the production process of sulfur free-cuttingsteel are emphasized.