前言不言而喻,钢淬火时的冷却方法是一重要因素。淬火介质中使用较多的是油和水,但近来也开始采用水溶性淬火介质和热浴等。淬火介质的冷却能力可用其冷却速度进行比较,通常以淬火烈度H来定量地表述。然而,尽管是比较出了淬火介质本身的冷却能力, Foreword It goes without saying that the cooling method of quenching steel is an important factor. Quenching medium used more oil and water, but recently also began to use water-soluble quenching media and hot baths. The cooling capacity of a quenchant medium can be compared with its cooling rate, usually expressed in terms of the quenching severity H. However, despite comparing the cooling capacity of the quench medium itself,