Hot hardness, which is the ability of the material to retain its hardness at elevated temperatures in view of the high temperatures existing in the cutting zone.
热硬度，即材料由于存在于切削区的高温而升温时仍能保持其硬度的能力。
Test results show that the material hase excellent wear - resistance for high temperature, hot hardness, thermal stability and tarnish resistance. It is applied to produce high quality guide.
试验结果表明，该材料具有优良的高温耐磨性、热强性、热稳定性及抗氧化性能，是适用于制作优质导卫板的材料。
Because of containing more sulfur and phosphorus in the steel, and more carbon, high hardness in material of surfacing welding, the pinch roller often turns up hot crack.
夹送辊堆焊时，由于母材的硫、磷含量较高及堆焊材料含碳量高、硬度大，常常产生热裂纹。
The results showed that high cooling rate of hot rolled billet resulted in abnormal microstructure formation and high hardness, which caused shear cracking.
结果表明，原材料热轧后冷速过快，造成组织异常，硬度偏高，导致了剪切开裂。
If the red hot wire directly out of the cooling, the annealing is not complete, steel wire hardness, not easy to spring.
如果把烧红的钢丝直接取出冷却，则退火不完全，钢丝硬度大，不易绕制弹簧。
The results show that the H13 steel treated by new process has higher hardness and heat-fatigue property. The service life of hot-forge die is prolonged.
结果表明：h13热锻模具钢经此工艺处理后，具有较高的硬度和热疲劳性能，延长了模具的使用寿命。
With laser cladding Co-base alloy coatings, the high temperature hardness and thermal fatigue resistance of H13 hot-working die surface were appreciably increased.
H13 热作模具钢表面经激光熔覆钴基合金后显著提高了模具的高温硬度和热疲劳抗力。
The effect of production processing parameters on the hardness and bending behavior of mo1y plate in powder metallurgy and hot-rolling have been studied.
研究了生产工艺参数对粉冶热轧钼板材的硬度和弯曲性能的影响。
Grain size and hardness of hot rolled Q235 steel were studied by means of heat treatment to simulate typical fire temperature time process.
模拟典型火灾温度时间曲线，对热轧的Q 2 35钢钢筋进行受热处理，测定在不同火灾温度下q 2 35钢的晶粒度和硬度。
Grain size and hardness of hot rolled Q235 steel were studied by means of heat treatment to simulate typical fire temperature time process.
模拟典型火灾温度时间曲线，对热轧的Q 2 35钢钢筋进行受热处理，测定在不同火灾温度下q 2 35钢的晶粒度和硬度。
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