SIST ISO 2137:2008

Oznaka standarda: SIST ISO 2137:2008
Koda projekta: 00005180
Organizacija: SIST
Naslov (angleški): Petroleum products and lubricants - Determination of cone penetration of lubricating greases and petrolatum
Naslov (slovenski): Naftni proizvodi in maziva - Določevanje penetracije s stožcem za mazalne masti in vazeline
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SIST ISO 2137:2008 angleški jezik Active SIST-G: 72.60 EUR
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Tehnični odbor: NAD - Naftni proizvodi, maziva in sorodni proizvodi
ICS: 75.080 75.100
Status: Objavljen
Objavljen: 01-apr-2008
Refer. št. objave: Sporočila 2008-04
Referenčna oznaka: ISO 2137:2007
Področje projekta (angleško): This International Standard specifies several methods for the empirical estimation of the consistency of lubricating greases and petrolatum by measuring the penetration of a standardized cone. The National Lubricating Grease Institute (NLGI) classifies greases according to their consistency, as measured by the 60 strokes worked penetration. The NLGI classification includes nine consistency numbers or grades, each grade corresponding to a given range of worked penetration. The NLGI classification is given in ISO 6743-99. Clause 7 of this International Standard specifies four procedures for determining the consistency of lubricating greases by measuring the penetration of a full-scale cone. These procedures cover the measurement of unworked, 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 lubricating greases when only small samples are available, by the use of cones a half-scale or quarter-scale of that used in Clause 7. The methods are applicable to greases having penetrations of 175 units to 385 units with the fullscale cone and are intended for use only if the size of the test sample prevents the use of cones described in Clause 7. They are not intended to replace the full-scale penetration as described in Clause 7, although a conversion to full-scale penetration is given in 10.2. See 8.1 for the limitations on the use of one-quarter-scale cones due to the poor precision.
Povezava na standarde
Povezava Ime Datum
Nadomešča SIST ISO 2137:1996 - Naftni proizvodi - Mazalna mast in vazelin - Določanje penetracije s stožcem 01-apr-2008


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