Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
Standard Test Method for Sonic Shear Stability of Polymer-Containing Oils
Automaticky preložený názov:
Štandardná skúšobná metóda pre Sonic v šmyku stability Polymér s obsahom oleja
NORMA vydaná dňa 1.5.2013
Označenie normy: ASTM D2603-01(2013)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.5.2013
Kód tovaru: NS-20881
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
shear stability, sonic shear test, viscosity stable, ICS Number Code 75.100 (Lubricants, industrial oils and related products)
Significance and Use | ||||||
4.1 This test method permits the evaluation of shear stability with minimum interference from thermal and oxidative factors which may be present in some applications. Within the limitations expressed in the scope of this test method, it has been successfully applied to hydraulic fluids, transmission fluids, tractor fluids, and other fluids of similar applications. It has been found applicable to fluids containing both readily sheared and shear-resistant polymers. Correlation with performance in the case of automotive engine applications has, to date, not been established. |
||||||
1. Scope | ||||||
1.1 This test method covers the evaluation of the shear stability of an oil containing polymer in terms of the permanent loss in viscosity that results from irradiating a sample of the oil in a sonic oscillator. This test method can be useful in predicting the continuity of this property in an oil where no change is made in the base stock or the polymer. It is not intended that this test method serve to predict the performance of polymer-containing oils in service. 1.2 Evidence has been presented that correlation between the shear degradation results obtained by means of sonic oscillation and those obtained in mechanical devices can be poor. This is especially true in the case of automotive engines. Further evidence indicates that the sonic technique may rate different families of polymers in a different order than mechanical devices.1.3 Because of these limitations, the committee under whose jurisdiction this test method falls has developed an alternative shear test method using a diesel injector nozzle, Test Method D3945. While that test method has found some utility in the evaluation of crankcase oils, the stress imparted to the sample has been found to be insufficient to shear polymers of the shear-resistant type found in aircraft hydraulic fluids. 1.4 This test method is used for polymeric additive specifications, especially in the hydraulic fluid market. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for informational purposes only. 1.6 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. |
||||||
2. Referenced Documents | ||||||
|
Historická
15.6.2013
Historická
15.4.2009
Historická
1.9.2013
Historická
1.1.2014
Historická
1.5.2011
Historická
15.9.2013
Chcete mať istotu, že používate len platné technické normy?
Ponúkame Vám riešenie, ktoré Vám zaistí mesačný prehľad o aktuálnosti noriem, ktoré používate.
Chcete vedieť viac informácií ? Pozrite sa na túto stránku.
Posledná aktualizácia: 2024-05-19 (Počet položiek: 2 902 277)
© Copyright 2024 NORMSERVIS s.r.o.