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1·The case hardening process results in gears that have much harder surfaces than cores.

局部淬火处理的齿轮具备比心部组织硬度高的表面硬度。

2·The procedures of heat treatment of steel include hardening tempering annealing and case hardening.

钢的热处理工序包括硬化、回火、退火和表面硬化。

3·The procedures of heat treatment of steel include hardening, tempering, annealing and case hardening.

钢的热处理工序包括硬化、回火、退火和表面硬化。

4·This impervious layer or boundary will retard the free diffusion of moisture. This condition is referred to as case hardening.

这一不透气的壳层(或边界层)会阻滞水分自由扩散，这种情形称为表面硬化。

5·This hardness ranges from 900 to 1,100 Brinell, which is considerably higher than that obtained by ordinary case hardening.

其硬度范围为900 到1，100 布氏硬度，这远高于普通表面硬化所获得的硬度。

6·Carburizing, cyaniding, and induction hardening are some of the processes commonly used to produce the case hardening effect.

碳化、氰化、感应淬火是局部淬火中经常使用的处理方法。

7·Sim? ilarly, an increase in case depth, particularly uneven case depth in case hardening steels, increases warpage on quenching.

与此类似，渗碳层厚度越大，特别是对于渗碳层厚度不一的渗碳用钢，淬火时更易产生翘曲。

8·Hardening: Case hardening process whereby the carburized outer surface is made hard and strong while the center (core) is made tough and flexible.

淬火：是使渗碳的表面变硬，芯部变得有柔韧性的表面硬化工艺。

9·Fatigue properties of three case hardening steels for heavy duty gears after carburization were investigated by means of rotating bending fatigue tests.

利用旋转弯曲疲劳试验方法研究了三种重载齿轮钢渗碳后的疲劳性能。

10·Typical materials include ductile iron castings or steel forgings. Most crankshafts require some form of heat treating including case hardening, nitriding and induction harden.

特殊的材料包括球墨铸铁和钢煅品，大部分机轴经过热处理，表面硬化、渗氮和感应淬火。