Effect of process parameters of cross wedge rolling on the internal rarefaction;
楔横轧工艺参数对心部疏松的影响
The modification of oil solves the problem of unacceptable quenched core structure and hardness of carburized gear.
对68#淬火油进行了复合添加剂改性试验,分析了复合添加剂对普通淬火油冷却特性的影响,解决了渗碳齿轮淬火心部组织与硬度不合格的问题。
This paper researched the relations of the core hardness of large gear made of 20CrMnMoH with modulus and effective case depth.
用五齿试样研究了用于大模数、大型零件的20CrMnMoH材料的心部硬度与零件模数和有效层深度的关系,以及心部组织与淬火温度的关系。
From the rostral to the caudal, the ADVR can be subdivided in to superficial cell plate and central core.
从头到尾 ADVR分为表层细胞板和核心部 。