水、油等淬火介质淬硬能力的数值评价方法

本文论述了以淬火硬度评定水、油及冷却特性介于水油之间的淬火介质淬硬能力的方法。其基本思路是，钢的连续冷却转变图中的每条曲线代表着钢的某一硬度，反之也可以认为淬火硬度也对应着该图的某一条曲线，代表介质的淬硬能力，从而就可以借助于淬火硬度值来评定水、油等淬火介质的淬硬能力。

淬火冷却介质换热系数研究进展

淬火冷却介质换热系数不仅是评定淬火介质冷却能力的主要参数,也是淬火过程数值模拟中最重要的边界条件之一。它受很多因素的影响,如工件的材质、尺寸、表面状态等,因此很难精确测定。本文概述了近年来有关换热系数的研究,并对以后的研究工作做了展望。

碱浴淬火剂的老化及再生

探讨碱浴淬火剂使用时间短、易老化变质的现象及原因;提出几种防止淬火剂老化及再生的方法,提高碱液的淬火能力,延长碱液使用时间,降低成本成为热处理工作者所关心的问题。

Quenchant Characterization System Based on Application of Thermal Probes of Typical Steels

A system was developed to identify characteristics of quenchants. It consists of computerized hardware, temperature acquisition software as well as changeable probes of steels. The feature of the ability to use probes made of any metallic material enables evaluation of hardening power of quenchants. Three thermal couples located on the same cross-section plane in the middle of probe’s length give cooling curves that present cooling behavior at different depths from the surface of probe. Microstructure and hardness of the quenched probes on the same plane in the middle of probe’s length from surface to center was investigated to estimate hardening effect. A number of quenchants were tested by this characterization system with several thermal probes of typical steels. Experimental data were stored in QuenDB quenchant database, which was designed for quenchants identification and hardness distribution storage.