ASTM-D3427 Standard Test Method for Air Release Properties of Hydrocarbon Based Oils

ASTM-D3427 - 2019 EDITION - CURRENT
Show Complete Document History

Document Center Inc. is an authorized dealer of ASTM standards.
The following bibliographic material is provided to assist you with your purchasing decision:

Standard Test Method for Air Release Properties of Hydrocarbon Based Oils
ORDER

Price:

$63.00        


Want this as a site license?

Scope

1.1 This test method covers the ability of turbine, hydraulic, and gear oils to separate entrained air.

Note 1: This test method was developed for hydrocarbon based oils. It may be used for some synthetic fluids; however, the precision statement applies only to hydrocarbon based oils.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Significance and Use

5.1 Agitation of lubricating oil with air in equipment, such as bearings, couplings, gears, pumps, and oil return lines, may produce a dispersion of finely divided air bubbles in the oil. If the residence time in the reservoir is too short to allow the air bubbles to rise to the oil surface, a mixture of air and oil will circulate through the lubricating oil system. This may result in an inability to maintain oil pressure (particularly with centrifugal pumps), incomplete oil films in bearings and gears, and poor hydraulic system performance or failure.

5.2 This test method measures the time for the entrained air content to fall to the relatively low value of 0.2 % volume under a standardized set of test conditions and hence permits the comparison of the ability of oils to separate entrained air under conditions where a separation time is available. The significance of this test method has not been fully established. However, entrained air can cause sponginess and lack of sensitivity of the control of turbine and hydraulic systems. This test may not be suitable for ranking oils in applications where residence times are short and gas contents are high.

Keywords

air entrainment; air release time; gear oil; hydraulic oil; turbine oil;

To find similar documents by ASTM Volume:

05.01 (Petroleum Products and Lubricants (I): D56 - D3710)

To find similar documents by classification:

75.080 (Petroleum products in general)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

Document Number

ASTM-D3427-19

Revision Level

2019 EDITION

Status

Current

Modification Type

Revision

Publication Date

Dec. 1, 2019

Document Type

Test Method

Page Count

6 pages

Committee Number

D02.C0.02