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Your current location:News Center >> Company newsAutomotive Forum: how to detect whether the deterioration of oilAuthor:admin Time:2011/12/16 15:42:10
After the oil used for a period of time, due to mechanical impurities pollution and external dust.
The metal parts by operation weared down and parts are corroded,which becomes metal salt that make oil metamorphism.
The oil is in deep black after deteriorated, and foam have appeared and showed more emulsified phenomenon, with fingers grinding, no sticky feeling, astringent or have peculiar smell, drop bad oil in the white paper which shows puce, no yellow infiltrating area or lots of black spots. If still use the bad oil will accelerate parts abrasive, will influence your products’ life even accidents.Therefore, check the oil is metamorphic and change in time that is especially important.
There are several methods to simplely identify oils:
Overflows observation
Take two cupmeasuring pots, A is put in oil which need to be checked out, and B is empty which is put on the desk, A cup should be lifted from desktop 30 to 40 cm and tilted, let the oil of A flow to the empty cup B slowly, observe the flow condition, duct of great quality oil is a slender, uniform, continuous, if there is fast or slow or large block oil phenomenon, Said it is metamorphism.
Hand twist method
With lubricating oil between your thumb and forefinger repeated grind, a great oil make you feel lubricity, honing, no friction, if you feel sand between fingers and friction are larger, indicates that there are impurities in lubricating oil, stop using, should replace new lubricating oil.
Illumination method
When the weather is fine day, with a screwdriver pull up lubricating oil and put horizontal plane into 45 degree Angle. Controlled sunshine, observation oil droplets, on the illumination, can be clear to see no oil honing for good, can continue to function, if too many honing, should be replaced lubricating oil.
Oil droplets trace method
Get a clean white paper filter, oil dripping drops in filter paper, wait for oil leakage, if the surface has black powder, touch have resistance acerbity feeling, show lubricating oil has many impurities inside, great oil without powder, with the hand feels dry and smooth, and yellow trace.
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