ASTM D7528-17a
(Test Method)Standard Test Method for Bench Oxidation of Engine Oils by ROBO Apparatus
Standard Test Method for Bench Oxidation of Engine Oils by ROBO Apparatus
SIGNIFICANCE AND USE
5.1 This bench test method is intended to produce comparable oil aging characteristics to those obtained with ASTM TMC Sequence IIIGA matrix reference oils 434, 435, and 438 after aging in the Sequence IIIG engine test.
5.2 To the extent that the method generates aged oils comparable to those from the Sequence IIIG engine test, the measured increases in kinematic and MRV viscosity indicate the tendency of an oil to thicken because of volatilization and oxidation, as in the Sequence IIIG and IIIGA (see Appendix X1 in Test Method D7320) engine tests, respectively.
5.3 This bench test procedure has potential use in specifications and classifications of engine lubricating oils, such as Specification D4485.
5.4 The results of this test method are valid when seeking qualification of oils against published specifications only when run on a test stand that has successfully met the calibration requirements specified under the TMC’s ROBO test monitoring program.
SCOPE
1.1 This test method describes a bench procedure to simulate the oil aging encountered in Test Method D7320, the Sequence IIIG engine test method. These aged oils are then tested for kinematic viscosity and for low-temperature pumpability properties as described in the Sequence IIIGA engine test, Appendix X1 of Test Method D7320.
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.2.1 Exceptions—There are no SI equivalents for some apparatus in Section 6, and there are some figures where inch units are to be regarded as standard.
1.3 This test method is arranged as follows:
Section
Scope
1
Reference Documents
2
Terminology
3
Summary of Test Method
4
Significance and Use
5
Apparatus
6
Reagents and Materials
7
Hazards
8
New and Existing Test Stand Calibration
9
Procedure
10
Cleaning
11
Calculations and Determination of Test Results
12
Report
13
Precision and Bias
14
Keywords
15
Annexes
ASTM Test Monitoring Center: Organization
Annex A1
ASTM Test Monitoring Center: Calibration Procedures
Annex A2
ASTM Test Monitoring Center: Maintenance Activities
Annex A3
ASTM Test Monitoring Center: Related Information
Annex A4
Reaction Vessel
Annex A5
Reaction Vessel Head
Annex A6
Reaction Vessel-to-Head Seal
Annex A7
Agitator Turbine Blade
Annex A8
Agitator Packing Gland
Annex A9
Nitrogen Dioxide Graduated Tube
Annex A10
Vacuum System Plumbing
Annex A11
Vacuum Trap Condensers
Annex A12
Setting the Vacuum Control Valve
Annex A13
Appendixes
Sample Preparation and Addition
Appendix X1
Charging the Liquid Nitrogen Dioxide
Appendix X2
Nitrogen Dioxide Precision Needle Valve
Appendix X3
Example of an Assembled ROBO Apparatus
Appendix X4
Information Package to Aid Setting Up a New Robo Apparatus
Appendix X5
1.4 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. Specific warning statements are given in Sections 7 and 8.
1.5 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.
General Information
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Designation: D7528 − 17a
Standard Test Method for
1
Bench Oxidation of Engine Oils by ROBO Apparatus
This standard is issued under the fixed designation D7528; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This test method is written for use by laboratories that make use ofASTM Test Monitoring Center
2
(TMC) services (see Annex A1 – Annex A4).
TheTMC provides reference oils, and engineering and statistical services to laboratories that desire
to produce test results that are statistically similar to those produced by laboratories previously
calibrated by the TMC.
In general, the Test Purchaser decides if a calibrated test stand is to be used. Organizations such as
theAmerican Chemistry Council require that a laboratory utilize theTMC services as part of their test
registration process. In addition, the American Petroleum Institute and the Gear Lubricant Review
Committee of the Lubricant Review Institute (SAE International) require that a laboratory use the
TMC services in seeking qualification of oils against their specifications.
The advantage of using the TMC services to calibrate test stands is that the test laboratory (and
hence the Test Purchaser) has an assurance that the test stand was operating at the proper level of test
severity. It should also be borne in mind that results obtained in a non-calibrated test stand may not
be the same as those obtained in a test stand participating in the ASTM TMC services process.
1. Scope* 1.3 This test method is arranged as follows:
Section
1.1 This test method describes a bench procedure to simu-
Scope 1
late the oil aging encountered in Test Method D7320, the
Reference Documents 2
Sequence IIIG engine test method. These aged oils are then Terminology 3
Summary of Test Method 4
tested for kinematic viscosity and for low-temperature pump-
Significance and Use 5
ability properties as described in the Sequence IIIGA engine
Apparatus 6
test, Appendix X1 of Test Method D7320.
Reagents and Materials 7
Hazards 8
1.2 Units—The values stated in SI units are to be regarded
New and Existing Test Stand Calibration 9
Procedure 10
as standard. No other units of measurement are included in this
Cleaning 11
standard.
Calculations and Determination of Test Results 12
1.2.1 Exceptions—There are no SI equivalents for some
Report 13
Precision and Bias 14
apparatus in Section 6, and there are some figures where inch
Keywords 15
units are to be regarded as standard.
Annexes
ASTM Test Monitoring Center: Organization Annex A1
ASTM Test Monitoring Center: Calibration Procedures Annex A2
1
This test method is under the jurisdiction of ASTM Committee D02 on
ASTM Test Monitoring Center: Maintenance Activities Annex A3
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
ASTM Test Monitoring Center: Related Information Annex A4
Subcommittee D02.B0.07 on Development and Surveillance of Bench Tests
Reaction Vessel Annex A5
Methods. Reaction Vessel Head Annex A6
Current edition approved Oct. 1, 2017. Published October 2017. Originally Reaction Vessel-to-Head Seal Annex A7
Agitator Turbine Blade Annex A8
approved in 2009. Last previous edition approved in 2017 as D7528 – 17. DOI:
Agitator Packing Gland Annex A9
10.1520/D7528-17A.
2
Nitrogen Dioxide Graduated Tube Annex A10
Until the next revision of this test method, the ASTM Test Monitoring Center
Vacuum System Plumbing Annex A11
will update changes in the test method by means of information letters. Information
Vacuum Trap Condensers Annex A12
letters may be obtained from the ASTM Test Monitoring Center, 6555 Penn Ave.,
Setting the Vacuum Control Valve Annex A13
Pittsburgh, PA 15206-4489. Attention: Administrator. This edition incorporates
Appendixes
revisions in all information letters through No. 16-1.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7528 − 17a
3.1.4 test oil, n—any oil subjected to evaluation in an
Section
Sample Preparation and Addition Appendix X1
established procedure. D4175
Charging the Liquid Nitrogen Dioxide Appendix X2
Nitrogen Dioxide Precision Needle Valve Appendix X3 3.2 Definitions of Terms Specific to This Standard:
Example of an Assembled ROBO Apparatus Appendix X4
3.2.1 aged oil, n—a test oil after it has been subjected to the
Information Package to Aid Setting Up a New Robo Apparatus Appendix X5
40 h aging process in a ROBO apparatus.
1.4 This standard does not purport
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7528 − 17 D7528 − 17a
Standard Test Method for
1
Bench Oxidation of Engine Oils by ROBO Apparatus
This standard is issued under the fixed designation D7528; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Any properly equipped laboratory, without outside assistance, can use the procedure described in
2
this test method. However, the ASTM Test Monitoring Center (TMC) provides reference oils and an
assessment of the test results obtained on those oils by the laboratory. By these means, the laboratory
will know whether its use of the test method gives results statistically similar to those obtained by
other laboratories. Furthermore, various agencies require that a laboratory utilize the TMC services in
seeking qualification of oils against specifications. For example, the U.S. Army imposes such a
requirement in connection with several Army engine lubricating oil specifications.
This test method is written for use by laboratories that utilize the portions of the test method that
2
refermake use of ASTM Test Monitoring Center (TMC) to theservices (see Annex A1 – Annex
A4TMC services. ).
The TMC provides reference oils, and engineering and statistical services to laboratories that desire
to produce test results that are statistically similar to those produced by laboratories previously
calibrated by the TMC.
This test method may be modified by means of information letters issued by the TMC. In general,
the Test Purchaser decides if a calibrated test stand is to be used. Organizations such as the American
Chemistry Council require that a laboratory utilize the TMC services as part of their test registration
process. In addition, the TMC may issue supplementary memoranda related to the method.American
Petroleum Institute and the Gear Lubricant Review Committee of the Lubricant Review Institute (SAE
International) require that a laboratory use the TMC services in seeking qualification of oils against
their specifications.
The advantage of using the TMC services to calibrate test stands is that the test laboratory (and
hence the Test Purchaser) has an assurance that the test stand was operating at the proper level of test
severity. It should also be borne in mind that results obtained in a non-calibrated test stand may not
be the same as those obtained in a test stand participating in the ASTM TMC services process.
1. Scope*
1.1 This test method describes a bench procedure to simulate the oil aging encountered in Test Method D7320, the Sequence
IIIG engine test method. These aged oils are then tested for kinematic viscosity and for low-temperature pumpability properties
as described in the Sequence IIIGA engine test, Appendix X1 of Test Method D7320.
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.2.1 Exceptions—There are no SI equivalents for some apparatus in Section 6, and there are some figures where inch units are
to be regarded as 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. Specific warning statements are given in Sections 7 and 8.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.B0.07 on Development and Surveillance of Bench Tests Methods.
Current edition approved May 1, 2017Oct. 1, 2017. Published May 2017October 2017. Originally approved in 2009. Last previous edition approved in 20132017 as
D7528 – 13.D7528 – 17. DOI: 10.1520/D7528-17.10.1520/D7528-17A.
2
Until the next revision of this test method, the ASTM Test Monitoring Center will update changes in the test method by means of information letters. Information letters
may be obtained from the ASTM Test Monitoring Center, 6555 Penn Avenue,Ave., Pittsburgh, PA 15206-4489. www.astmtmc.cmu.edu.Attention: Administrator. This edition
incorporates revisions in all information letters through No. 16-1.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr
...
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