BS 2000-239(2004) : 2004
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
07-23-2013
01-12-2013
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
5.1 Cleaning solvents
6 Apparatus
6.1 Four-ball extreme-pressure lubricant testing machine
6.2 Friction recording device (optional)
6.3 Loading discs
6.4 Microscope
6.5 Timer
6.6 Test balls
6.7 Assembly device
7 Samples and sampling
8 Preparation of apparatus
9 General procedure
10 Test procedures
10.1 Mean Hertz load (MHL)
10.2 Wear-load curve, welding load, flash temperature parameter
and initial seizure load
10.3 Wear test
11 Calculations
11.1 General
11.2 Mean Hertz load
11.3 Wear-load curve, flash temperature parameter and initial
seizure load
12 Expression of results
13 Precision
13.1 General
13.2 Repeatability
13.3 Reproducibility
14 Test report
Annex A (normative) Mean Hertz load data sheet
Annex B (normative) Calibration of friction recorder springs
Bibliography
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