Most nonferrous metals can be annealed, but never tempered, normalized, or case-hardened.
而大多数有色金属可以进行退火，但不能进行正火或者表面硬化。
Main ingredients: green tea essence, almond oil, mint, cationic active agent, high elastic case-hardened cells and etc.
主要成分：绿茶精华、杏仁油、薄荷、阳离子活性剂、高弹性定型因子等。
Case hardened: a case hardened fastener is a fastener of ferrous material having a surface which has been made harder than the core.
表面硬化：表面硬化的紧固件是黑色金属，其表面经过处理后比内心硬度要高。
By means of extensive tests on nitrided and case hardened gears, it was attempted to discover the possibilities and the limits of nitriding for gears.
通过对氮化和表面渗碳硬化齿轮大量的试验研究，设法揭示对齿轮进行氮化处理的可能性和局限性。
According to real production case of our country, it is necessary to establish the standard about the conversion tables on hardness and strength of hardened high speed steel.
根据我国具体的生产实际情况，有必要建立我国自己的淬硬高速钢洛氏硬度和维氏硬度换算的标准。
According to the feature of the temperature distribution induced by laser scanning, the simple formulas for the fast calculation of the hardened case are set up.
根据激光扫描时工件内温度场及硬化层的分布特征，提出了简便实用的硬化层预测计算公式。
Based on that hardened case depth can be increased by delay in air after forging, the technique of delay quenching after forging is proposed in this paper.
基于锻后预冷淬火可提高工件的淬硬层深度，本文提出锻后余热预冷淬火工艺。
The formula of residual stress in laser transformation hardened case is inferred, and the experimental results are discussed.
推导了激光相变硬化层的残余应力公式，并对实验结果进行了分析讨论。
The experimental results show that the residual compressive stresses existed in the laser hardened case are universal phenomena.
结果表明，激光相变硬化层中的残余压应力是普遍存在的现象。
The three key techniques for laser surface hardening of gear have been proposed in this paper. With using these techniques, an uniform hardened case along the flank of gear has been obtained easily.
提出了齿轮激光表面强化的偏置技术、变速扫描技术和辅助冷却技术，因而，获得了沿齿廓分布的均匀硬化层。
Aiming at heavy duty and low speed gear transmission, Zheng Zhou Research Institute of Mechanical Engineering puts forwards ZY-1 case- hardened double-circular-arc gear.
为此，郑州机械研究所针对低速重载齿轮传动领域设计了ZY-1型硬齿面双圆弧齿轮齿形。
The stress state of laser hardened case was press stress.
激光淬火硬化层应力状态为压应力。
It is shown that the simulating technology established can predict the depth, width and contour of hardened case and provide guide to select reasonable parameter.
该模拟技术可以预测出具体工艺条件下电子束硬化层的深度、宽度和轮廓，并为选取合理的工艺规范提供指导。
It is shown that the simulating technology established can predict the depth, width and contour of hardened case and provide guide to select reasonable parameter.
该模拟技术可以预测出具体工艺条件下电子束硬化层的深度、宽度和轮廓，并为选取合理的工艺规范提供指导。
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