1.1本标准描述了三种相关试验方法，涵盖了油浸粉末冶金产品物理性能的测量。 1.1.1测定材料中所含油的体积百分比。 1.1.2油浸渍过程效率的测定。 1.1.3通过油浸测定互连孔隙度百分比。 1.2除用于确定密度的密度和质量值外，使用克每立方厘米（g/cm 3. )而克（g）单位是长期存在的行业惯例，英寸-磅单位的数值应视为标准。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 5.1油含量值通常包含在油浸粉末冶金轴承的规范中。 5.2油浸渍效率表明接收零件的浸渍情况。 5.3粉末冶金轴承所需的自润滑性能要求互连孔隙率最小，并且互连孔隙率具有令人满意的油浸性。 规定了最低含油量。 5.4这些试验方法的结果可用于质量控制或合规性目的。

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 interconnected porosity by oil impregnation. 1.2 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 inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== 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 interconnected porosity and satisfactory oil impregnation of the interconnected porosity. A minimum oil content is specified. 5.4 The results from these test methods may be used for quality control or compliance purposes.