The results showed that the strength of the steel is not sensitive to the quenching temperature, but the toughness at low temperature is.
结果表明，强度对淬火温度变化不敏感，而低温韧性则较敏感。
Advanced high strength after quenching and tempering has good mechanical properties and low temperature impact toughness.
高强度的高级淬火低温回火后具有良好的综合力学性能和低温冲击韧度。
The material chosen for this paper is NM360A whose heat treatment state is quenching + tempering at low temperature, it has excellent wear resistant performance.
本文所选择的的材料为淬火+低温回火状态的NM360A，具有优秀的耐磨性能。
Immediate quenching and tempering process of steel T10 after low temperature salt bath chromizing was studied.
研究了T10钢在低温盐浴渗铬后直接淬火并回火工艺。
The results show with increasing quenching temperature the brittle temperature of the steel tempered at low temperature brittle temperature moves upwards.
结果表明：随淬火温度提高，低温回火脆性区向高温区漂移。
Test showed that the low temperature quenching process may cause the outer rings to have excellent and stable strength, toughness and wear-resistance.
试验结果表明，低温淬火工艺可使外套圈获得优良强韧性与耐磨性。
The influences of quenching and tempering temperature on microstructure and mechanical properties of medium-carbon-low-alloy wear-resistant cast steel were investigated.
研究了淬火和回火温度对中碳低合金耐磨铸钢组织和力学性能的影响。
Hardness can do 61 — 65hrc maturation process is: annealing, softening after casting machining, machining of air cooling after quenching and low temperature stress tempering.
硬度能做到61——65hrc成熟工艺是：铸造后软化退火，便于加工，加工后空冷淬火加低温去应力回火。
Hardness can do 61 — 65hrc maturation process is: annealing, softening after casting machining, machining of air cooling after quenching and low temperature stress tempering.
硬度能做到61——65hrc成熟工艺是：铸造后软化退火，便于加工，加工后空冷淬火加低温去应力回火。
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