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  • ASTM
    D3427-12 Standard Test Method for Air Release Properties of Petroleum Oils
    Edition: 2012
    $99.60
    Unlimited Users per year

Description of ASTM-D3427 2012

ASTM D3427 - 12

Standard Test Method for Air Release Properties of Petroleum Oils

Active Standard ASTM D3427 | Developed by Subcommittee: D02.C0.02

Book of Standards Volume: 05.01



Translated Standard: Russian
more info


ASTM D3427

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.

1. 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 mineral based oils. It may be used for some synthetic fluids; however, the precision statement applies only to petroleum 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 and health practices and determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

DIN Standard

DIN51 381

ASTM Standards

D1193 Specification for Reagent Water

D1401 Test Method for Water Separability of Petroleum Oils and Synthetic Fluids

E1 Specification for ASTM Liquid-in-Glass Thermometers


Keywords

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


ICS Code

ICS Number Code 75.080 (Petroleum products in general)


DOI: 10.1520/D3427-12

ASTM International is a member of CrossRef.

ASTM D3427

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ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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