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高温等温对钢性能的影响 GCr15钢淬火加热后,迅速冷至750℃左右的温度等温2～5分钟再急冷淬火,可使其硬度在不降低甚至稍有提高的情况下,还提高了冲击韧性。 在钢的热处理中,人们对于钢在中、低温的等温冷却工艺性能做了大量的试验研究,并且在生产实际中得到了广泛的应用,而对于钢在高温短时间等温停留后再急冷淬火对其性能的影响则研究甚少,应用于生产实际者更为少见。鉴于此,我们对钢在750℃左右的高温等温(如图1)做了一些试验研究。试验结果表明,钢在急冷淬火之
Effect of High Temperature Isothermal on Steel Properties After GCr15 steel is quenched and heated, the steel is rapidly cooled to a temperature of about 750 ° C for 2 to 5 minutes and then quenched to quench the steel. The hardness of the steel, after being quenched or quenched, increases the impact toughness . In the heat treatment of steel, people do a lot of experimental research on the isothermal cooling process performance of steel at medium temperature and low temperature, and it has been widely used in the production practice. However, when the steel is isothermal quenched at high temperature for a short time The impact of its performance is studied very little, the actual production is more rare. In view of this, we conducted a number of experimental studies on the high temperature isothermal steel (at about 750 ℃ (Figure 1)). The test results show that the quenched steel quenched