As we all know, air can't be seen or touched, but there are many impurities in the air.Impurities in the air will lead to the deterioration of dimethylsilicone oil, in order to use as little as possible after the deterioration of dimethylsilicone oil, bring adverse effects to machinery, we need to often pay attention to whether dimethylsilicone oil attention, how to determine? 

    1, light method.On a clear day, lift up the dimethylsilicone oil with a screwdriver to create a 45 degree tilt Angle with the horizontal plane.Control the sunlight, observe the oil droplets, in the light, can clearly see the oil without debris is good, can continue to function, if the debris is too much, should be replaced.

    2, hand twist method.The dimethylsilicone oil twist in the thumb and index finger repeatedly grinding, the better quality of the hand feel lubricity, less debris, frictionless, if you feel the sand between the fingers like a larger sense of friction, it shows that the oil impurities, can no longer be used, should be replaced.

    3, oil drop trace method.Take a clean white filter paper, drop the number of drops of oil on the filter paper, after the leakage of dimethyl silicone oil, if there is a black powder on the surface, touch with the hand has a sense of resistance, it indicates that the impurities in the oil have been a lot, if it is of good quality, there should be no powder, dry and smooth to the touch with the hand, and yellow traces.

    4, oil flow observation method.Take two cups, one of which need to be checked out of dimethyl silicone oil, empty on the desktop, the other will be filled with oil measuring cup for leave desktop 30 to 40 cm tall and lean, let oil flow slowly to the empty cup, to observe the flow situation, good quality should be long and thin, uniform, continuous, if appear oil flow fast and slow, sometimes with large flow, said is bad.

    The proper preservation of dimethyl silicone oil, may be used after the expiration of the shelf life, but the improper preservation of dimethyl silicone oil, may not be the expiration of the warranty period, long has deteriorated.When dimethyl silicone oil deteriorates, if not replaced in time, it will accelerate the wear and tear of parts, affect the service life, so the corresponding method can be used for detection.