| 单词 | cyanide hardening |
| 释义 | > as lemmascyanide hardening cyanide hardening n. case-hardening of iron or steel by the cyanide process. ΘΚΠ society > occupation and work > industry > working with specific materials > working with metal > [noun] > hardening, tempering, or annealing > hardening by cyanide process cyanide process1890 cyaniding1894 cyanide hardening1921 1921 Jrnl. Iron & Steel Inst. 103 435 Cyanide Hardening Due to Nitrogen... Steel case-hardened in cyanide contains much nitrogenised material, and nitrogen is believed to exert an appreciable influence on the properties of steel so treated. 1928 Jrnl. Iron & Steel Inst. 118 365 General practice in cyanide hardening is discussed, and reference is made to the Shimer process for case hardening and the cyanogen gas process. < as lemmas |
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