1.The material cutability is described and evaluated with a target system and the fuzzy comprehensive evaluation method.

1.试图用指标体系来描述材料的切削加工性。

2.What is obtained with the forging waste heat normalizing and controlled cooling technique is the coarse stable structure in a 20CrMnTi gear, but its cutability is good.

2.余热常规的处理后，再经同样的工艺进行渗碳、淬处理，试验证明：其渗层心部的组织、晶粒度及机械性能均相同。