Petroleum and related products. Determination of the ageing behaviour of inhibited oils and fluids. TOST test. Part 4: Procedure for industrial gear oils (ISO 4263-4:2006)
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ISO 4263:2006 specifies a method for the determination of the ageing behaviour of gear oils of categories CKC, CKD, CKS and CKT as defined in ISO 6743-6. The ageing is accelerated by the presence of air and elevated temperatures, and the degradation of the oil is assessed by the change in kinematic viscosity at 100 °C, the insoluble content (precipitation number), and possibly the acid number increase, the sediment content by filtration, the additives content variation and the infra-red oxidation.
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Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Sampling
8 Preparation of apparatus — Cleaning of glassware
8.1 Cleaning new glassware
8.2 Cleaning used glassware
9 Procedure
10 Expression of results
11 Precision
11.1 General
11.2 Viscosity increase
11.3 Precipitation number increase
12 Test report
Annex A Liquid-in-glass thermometer specifications (normative)
Annex B Method for the determination of the insoluble content (precipitation number) (normative)
Annex C Method for the determination of the sediment content by filtration (informative)
Annex D Method for the determination of the variation of the additives content (informative)
Annex E Method for the determination of the infra-red oxidation (informative)
ISO 12185:1996 Crude petroleum and petroleum products -- Determination of density -- Oscillating U-tube method
ISO 2977:1997 Petroleum products and hydrocarbon solvents -- Determination of aniline point and mixed aniline point
ISO 3104:1994 Petroleum products -- Transparent and opaque liquids -- Determination of kinematic viscosity and calculation of dynamic viscosity
ISO 12185:1996 Crude petroleum and petroleum products -- Determination of density -- Oscillating U-tube method
ISO 2977:1997 Petroleum products and hydrocarbon solvents -- Determination of aniline point and mixed aniline point
ISO 3104:1994 Petroleum products -- Transparent and opaque liquids -- Determination of kinematic viscosity and calculation of dynamic viscosity
ISO 3170:2004 Petroleum liquids -- Manual sampling
ISO 3405:2000 Petroleum products -- Determination of distillation characteristics at atmospheric pressure
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
ISO 3734:1997 Petroleum products -- Determination of water and sediment in residual fuel oils -- Centrifuge method