By measuring the cooling curve and quench severity of quenching oil at various flow rates, the relationship among the hardening capacity, quench severity and flow rate was established.

对淬火油在不同流速下的冷却曲线和淬火烈度进行了测量，建立了硬化能力、淬火烈度与介质流速三者之间的关系。

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Combined with measured cooling curves, the TTP curve was used to predict the influence of quenching rate on the hardness of 7055 aluminum alloy by quench factor analysis method.

采用分级淬火的方法测定了7055铝合金的温度—时间—性能(ttp)曲线，并结合合金实际淬火冷却曲线通过淬火因子分析方法预测了合金的硬度。

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The result shows that the RE make CCT curve move towards right and hardness of steel increases at same rate of cooling.

结果表明：稀土使钢的过冷奥氏体转变曲线右移，在同样冷却速度下，加稀土钢的硬度增加。

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