-
ASTM D217 for cone penetration of lubricating grease
6. Apparatus6.1 Penetrometer, in accordance with A1.1. The instrument shall be capable of indicating depth in tenths of a millimetre. A sketch of a generic penetrometer is shown in Fig. 1.6.2 Standard Penetrometer Cone, in accordance with A1.2, is suitable for all penetrations. An optional penetrometer ...
-
ASTM D217 for cone penetration of lubricating grease
4. Summary of Test Methods4.1 For unworked penetration, the sample is brought to 25°C (77°F) in a worker cup or other suitable container. The cone assembly of the penetrometer is released and allowed to drop freely into the grease for 5 s. Three determinations are made and averaged to give the reported ...
-
ASTM D217 for cone penetration of lubricating grease
3. Terminology3.1 Definitions3.1.1 lubricating grease, n-a semi-fluid to solid product of a dispersion of a thickener in a liquid lubricant.3.1.1.1 Discussion - The dispersion of the thickener forms atwo-phase system and immobilizes the liquid lubricant by surface tension and other physical forces. Other ...
-
ASTM D217 for cone penetration of lubricating grease
1. Scope1.1 These test methods cover four procedures for measuring the consistency of lubricating greases by the penetration of a cone of specified dimensions, mass, and finish. The penetration is measured in tenths of a millimetre.NOTE 1 - The National Lubricating Grease Institute (NLGI) classified ...
-
ASTM D1275 for corrosive sulfur in electrical insulating oils
10. Interpretation of Results10.1 Classify the oil as corrosive or noncorrosive in accordance with Table 1. Classification of corrosive or noncorrosive is to be aided through the use of ASTM Copper Strip Corrosion Standards as referenced in Test Method D 130. A description of the tarnish levels is provided ...
-
ASTM D1275 for corrosive sulfur in electrical insulating oils
9. Method B9.1 Prepare the test specimen as described in 8.1.9.2 Promptly place the prepared copper strip in a clean 250-mL bottle to which has been added 220 mL of the oil to be tested. Place the bent copper strip standing on its long edge so that no flat surface lies along the glass bottom of the vessel. ...
-
ASTM D1275 for corrosive sulfur in electrical insulating oils
8. Method A8.1 Use the oil to be tested as received. Do not filter the oil through paper.8.2 Promptly place the prepared copper strip in a clean 250-mL flask to which has been added 250 mL of the oil to be tested. Place the bent copper strip standing on its long edge so that no flat surface lies along ...
-
ASTM D1275 for corrosive sulfur in electrical insulating oils
7. Preparation of Apparatus7.1 Chemically clean flasks, glass stoppers, bottles and PFTE screw plugs with solvents to remove oil, then wash the flasks with sulfur-free cleaning powder or liquid. Rinse with tap water, then with distilled water, and dry in an oven.7.2 Cut a strip of copper 6 by 25 mm (1/4 ...
-
ASTM D1275 for corrosive sulfur in electrical insulating oils
4. Significance and Use4.1 In most of their uses, insulating oils are continually in contact with metals that are subject to corrosion. The presence of corrosive sulfur compounds will result in deterioration of these metals. The extent of deterioration is dependent upon the quantity and type of corrosive ...
-
ASTM D1275 for corrosive sulfur in electrical insulating oils
1. Scope1.1 This test method describes the detection of corrosive sulfur compounds (both inorganic and organic) in electrical insulating oils of petroleum origin.1.2 New and in-service mineral insulating oils may contain substances that cause corrosion under certain conditions of use. This test method ...
