The aim of induction quenching has been enlarged from only improving local wear resistance to improving whole static strength and fatigue strength of parts.
感应淬火的目的已从仅仅提高零件的局部耐磨性扩大到提高零件的整体静强度和疲劳强度。
2
Experiments for hot mold shell with isolated hot spot by local water quenching in investment casting before and after pouring were conducted.
对熔模铸件孤立热节热型壳进行了浇注前及浇注后局部水淬激冷试验。
3
The former flame quenching and quenching after local salt bath heating for it could not obtain good result.