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 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。
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