The results show that secondary normalizing can remove the wustite structure and make grain refining.

通过对几种细化晶粒方法的比较,提出采用二次正火可细化晶粒并消除魏氏组织.

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The microstructure in the sub - temperature normalized ( SN ) steel is mainly ferrite and bainite colonies.

亚温正火的组织主要是铁素体与贝氏体晶团.

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General anneal cooling rate slowest, fire rate quicker, the quenching cooling rate is quicker.

一般地退火的冷却速度最慢, 正火的冷却速度快, 淬火的冷却速度更快.

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The fatigue life of 45 normalized steel would be decreased by pre stretching.

微量的预应变会降低正火45钢的疲劳性能.

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Isothermal normalization can improve or eliminate the banded structure and duplex grain structure in forging blanks.

结果表明,零件毛坯等温正火可以获得比普通正火更细的晶粒、更均匀的金相组织、更小的硬度散差.

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After isothermal normalizing, SAE 8620 H steel gear obtained the ideal hardness, micro structures and fine cutting behaviors.

SAE8620H钢齿轮采用等温正火工艺,获得了理想的硬度 、 金相组织和良好的切削性能.

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Normalizing steels used in agricultural machinery and automobile have been melted with micro - alloying design method.

按微合金化的成分设计方法冶炼了农机及汽车用低碳正火钢,研究了其显微组织及机械性能.

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The reason the increase the impact fatigue at normalizing and low temperature tempering was discussed.

分析了多冲疲劳裂纹扩展的行为,讨论了正火低温回火提高冲击疲劳的原因.

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The purpose of normalizing is usually to define grain structures that have been coarsened in forging.

正火的目的是使在锻造中变粗的结晶颗粒细化.

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The experimental results show that as normalized condition , the 0.8 % C steel has the highest impact abrasion resistance.

试验结果表明,钢的正火态抗冲击磨粒磨损性能在含碳量为0.8%时具有最佳值.

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