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

试图用指标体系来描述和评价切削加工性。

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.

余热火和常规火处理后，再经同样工艺进行、火和回火处理，试验证明：其层和心部组织、晶粒度及机械性能均相同。