Casehardening involves a change of surface properties to produce ahard,wear-resistant shell about a tough,fracture-resistant core.

表面硬化包含一个硬度、的壳以及韧的芯。

The developed dual phase cast steel is applicable as scaleboard materials in a middle or smaller type of ball mill.

在给定的低铬铸铁下试样条件下,当冲击载荷较小时,铸态复相有良好的冲击。

The high wearing resistance of the samples after hydrocooling and air cooling was partially attributed to martensite transformation and work-hardening.

经水冷和空冷的试样有的重要原因是其在损过程中诱发了马氏体相变,出现加工硬化现象。

This paper deals with the wear resistance and anti-seizing behavior of sulfonitrided high speed steel by comparing with that without sulfonitriding.

研究了速经硫氮共渗处理后的及抗咬合，并与未经表面处理的试样进行了比较。

In order to strengthen its antifriction property, the material nature of the boards chooses a special formula of high molybdenum, high chromium and nickelic.

为增强其，衬板采用的是钼、铬、镍特种配方。

In this paper, the PVA of major component in the Sensitized emulsion was modified by the polyreaction with formaldehyde, butyl aldehyde, furfural and alcohol.

用甲醛、丁醛、糠醛对重氮感光胶中的主要成分聚乙烯醇进行改,以增强感光胶的水和。