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1·Hot bake-hardening steel is the latest developed new generation of auto-motive steel.

热轧烘烤硬化钢是最新开发的新一代汽车用钢。

2·The microstructure and mechanical properties of a copper bearing age hardening steel were studied.

研究了含铜时效钢焊接热影响区的组织与性能。

3·The finishing & semi-finishing of cast iron and nonferrous metals and also for the machining of manganese steel and hardening steel.

用于铸铁和有色金属精加工和半精加工，也用于锰钢和淬火钢的加工。

4·The experimental results of stress relaxation and constant load tests in hydrogen charging condition prove that hydrogen has dual action of softening and hardening steel.

充氢条件下应力弛豫和恒载荷拉伸试验结果表明，氢有引起钢的软化和硬化的双重作用。

5·The present paper discusses the effect of baking temperature, baking time and pre-strain on the bake hardenability of ultra low carbon bake hardening steel (ULC-BH steel).

研究分析烘烤温度、烘烤时间、预应变量等烘烤条件对超低碳烘烤硬化钢烘烤硬化性能的影响。

6·The new domestic - developed plastic mould steels include prehardening steel . age hardening steel, quenching-tempering steel, cold -forming steel, and anti - corrosion steel, etc.

国产新型塑料模具钢主要有预硬钢、时效硬化钢、淬火——回火钢、冷挤压成型模具钢、耐蚀钢等类型。

7·Grinding hardening, the technology of hardening steel piece surface with grinding heat instead of high or medium frequency induction hardening heat, can integrate grinding surface hardening.

磨削强化处理技术是利用磨削热替代高、中频感应淬火热源对钢件表层进行强化处理，将磨削加工与表面强化合为一体。

8·Hardening. This is the process of heating to a temperature above the critical range, and cooling rapidly enough through the critical range to appreciably harden the steel.

淬火。这个工艺是把材料加热到临界温度范围之上，然后迅速冷却到临界温度范围以下，使钢材明显变硬。

9·Steel with low carbon content will not respond appreciably to hardening treatment.

含碳量低的钢对淬火处理没有明显的反应。

10·There are three main operations in the heat treatment of steel: hardening, tempering and annealing.

钢的热处理操作主要有三种，即：淬火，回火和退火。