1 Scope
1.1 This standard specifies a method for the determination of the foaming characteristics of lubricating oils at specified moderate temperatures. It is applicable to lubricants which may or may not contain additives to modify or suppress the tendency to form stable foams.
Note: It is a serious problem to generate the foam by the lubricating oil in high gear, large-volume pumping and splash system and the potential problems in lubrication, cavitation and loss in systems will lead to mechanical fault. This method is valuable to choose the oil product to adapt to these lubrication systems. The ratings used to describe the foaming tendency and/or stability are empirical.
1.2 The use of this standard may involve hazardous materials, operations and equipment but not purport to address all of the safety problems associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Foreword I
1 Scope
2 Normative Reference
3 Terms and Definitions
4 Principle
5 Apparatus
6 Reagents and Materials
7 Preparation of the Apparatus
8 Procedure
9 Alternative Procedure
10 Precision
11 Report
Annex A (Normative) Test for Maximum Pore Diameter and Permeability of the Diffuser
Annex B (Normative) Thermometer Specifications
1 Scope
1.1 This standard specifies a method for the determination of the foaming characteristics of lubricating oils at specified moderate temperatures. It is applicable to lubricants which may or may not contain additives to modify or suppress the tendency to form stable foams.
Note: It is a serious problem to generate the foam by the lubricating oil in high gear, large-volume pumping and splash system and the potential problems in lubrication, cavitation and loss in systems will lead to mechanical fault. This method is valuable to choose the oil product to adapt to these lubrication systems. The ratings used to describe the foaming tendency and/or stability are empirical.
1.2 The use of this standard may involve hazardous materials, operations and equipment but not purport to address all of the safety problems associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Contents of GB/T 12579-2002
Foreword I
1 Scope
2 Normative Reference
3 Terms and Definitions
4 Principle
5 Apparatus
6 Reagents and Materials
7 Preparation of the Apparatus
8 Procedure
9 Alternative Procedure
10 Precision
11 Report
Annex A (Normative) Test for Maximum Pore Diameter and Permeability of the Diffuser
Annex B (Normative) Thermometer Specifications
