1.1 本标准描述了三种相关的试验方法，涵盖了浸油粉末冶金产品物理性能的测量。 1.1.1 材料中所含油的体积百分比的测定。 1.1.2 油浸渍过程效率的测定。 1.1.3 通过油浸渍法测定表面连接孔隙率的百分比。 1.2 单位-- 除了用于确定密度的密度值和质量外，使用克/立方厘米（g/cm 3. )而克（g）单位是长期以来的行业惯例，以国际单位制为单位的数值应被视为标准。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者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。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 含油量值通常包含在含油PM轴承的规范中。 5.2 油浸渍效率提供了所接收的部件被浸渍的程度的指示。 5.3 PM轴承所需的自润滑性能需要最小的表面量- 连通孔隙和令人满意的表面连通孔隙的油浸渍。规定了最低油含量。 5.4 这些测试方法的结果可用于质量控制或合规目的。

1.1 This standard describes three related test methods that cover the measurement of physical properties of oil-impregnated powder metallurgy products. 1.1.1 Determination of the volume percent of oil contained in the material. 1.1.2 Determination of the efficiency of the oil-impregnation process. 1.1.3 Determination of the percent surface-connected porosity by oil impregnation. 1.2 Units— With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm 3 ) and gram (g) units is the long-standing industry practice, the values in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3 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. 1.4 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 Oil content values are generally contained in specifications for oil-impregnated PM bearings. 5.2 The oil-impregnation efficiency provides an indication of how well the as-received parts had been impregnated. 5.3 The desired self-lubricating performance of PM bearings requires a minimum amount of surface-connected porosity and satisfactory oil impregnation of the surface-connected porosity. A minimum oil content is specified. 5.4 The results from these test methods may be used for quality control or compliance purposes.