1.1 本试验方法描述了通过冷却速率测定评估淬火油淬火特性的设备和程序。 1.2 本试验旨在评估非搅拌系统中的淬火油。这些测试结果与在搅拌系统中获得的结果之间没有相关性。 1.3 以国际单位制为单位的数值将被视为标准。 1.3.1 例外情况- 括号中的值仅供参考。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 该试验方法提供了冷却时间与温度的关系路径，该路径与物理性能（如金属淬火时可获得的硬度）成正比。本试验获得的结果可用于指导热处理油的选择或比较新的或使用的不同热处理油的淬火强度。

1.1 This test method describes the equipment and the procedure for evaluation of a quenching oil's quenching characteristics by cooling rate determination. 1.2 This test is designed to evaluate quenching oils in a non-agitated system. There is no correlation between these test results and the results obtained in agitated systems. 1.3 The values in SI units are to be regarded as the standard. 1.3.1 Exception— The values in parentheses are provided for information only. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method provides a cooling time versus temperature pathway which is directly proportional to physical properties such as the hardness obtainable upon quenching of a metal. The results obtained by this test may be used as a guide in heat treating oil selection or comparison of quench severities of different heat treating oils, new or used.