ISO 2137:2007 石油产品和润滑剂 润滑脂和矿脂的锥入度测定

标准编号：ISO 2137:2007

中文名称：石油产品和润滑剂 润滑脂和矿脂的锥入度测定

英文名称：Petroleum products and lubricants — Determination of cone penetration of lubricating greases and petrolatum

发布日期：2007-12

标准范围

This International Standard specifies several methods for the empirical estimation of the consistency oflubricating greases and petrolatum by measuring the penetration of a standardized cone.The National Lubricating Grease Institute (NLGI) classifies greases according to their consistency, asmeasured by the 60 strokes worked penetration. The NLGI classification includes nine consistency numbersor grades, each grade corresponding to a given range of worked penetration. The NLGI classification is givenin ISO 6743-99.Clause 7 of this International Standard specifies four procedures for determining the consistency of lubricatinggreases by measuring the penetration of a full-scale cone. These procedures cover the measurement ofunworked, worked, prolonged worked, and block penetrations. Penetrations up to 500 units can be measured.Clause 8 of this International Standard specifies methods for determining the consistency of lubricatinggreases when only small samples are available, by the use of cones a half-scale or quarter-scale of that usedin Clause 7. The methods are applicable to greases having penetrations of 175 units to 385 units with the fullscalecone and are intended for use only if the size of the test sample prevents the use of cones described inClause 7. They are not intended to replace the full-scale penetration as described in Clause 7, although aconversion to full-scale penetration is given in 10.2. See 8.1 for the limitations on the use of one-quarter-scalecones due to the poor precision.NOTE 1 Unworked penetrations do not generally represent the consistency of greases in use as effectively as doworked penetrations. The latter are usually preferred for inspecting lubricating greases.NOTE 2 Penetration of block greases can be obtained on those products that are sufficiently hard to hold their shape.These greases generally have penetrations below 85 units.Clause 9 of this International Standard specifies a method for the determination of the consistency ofpetrolatum by measurement of the penetration of a full-scale cone, having penetrations up to 300 units. Thismethod can also be used to estimate the consistency of slack waxes.

标准预览图