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Standard Test Method for Low Temperature, Low Shear Rate, Viscosity/Temperature Dependence of Lubricating Oils Using a Temperature-Scanning Technique
Automaticky preložený názov:
Štandardná skúšobná metóda pre nízke teploty , nízka Shear Rate , viskozita / teplota Závislosť mazacích olejov použitím teploty, skenovanie Technika
NORMA vydaná dňa 1.4.2005
Označenie normy: ASTM D5133-05
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.4.2005
Kód tovaru: NS-29962
Počet strán: 12
Približná hmotnosť: 36 g (0.08 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
borderline pumping temperature, critical pumpability temperature, critical pumpability viscosity, engine oil, gelation, Gelation Index, Gelation Index temperature, low-temperature engine oil pumpability, low-temperature rheology, Scanning Brookfield technique, temperature-scanning technique, viscosity, ICS Number Code 75.100 (Lubricants, industrial oils and related products)
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1.1 This test method covers the measurement of the apparent viscosity of engine oil at low temperatures. 1.2 A shear rate of approximately 0.2 s-1 is produced at shear stresses below 100 Pa. Apparent viscosity is measured continuously as the sample is cooled at a rate of 1C/h over the range 5 to 40C, or to the temperature at which the viscosity exceeds 40 000 mPas (cP). 1.3 The measurements resulting from this test method are viscosity, the maximum rate of viscosity increase (Gelation Index), and the temperature at which the Gelation Index occurs. 1.4 Applicability to petroleum products other than engine oils has not been determined in preparing this test method. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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. |
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