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Skf imported bearings fault identification skills several ways
Source: China Bearing Network Time: 2014-10-14
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First, the oscillation diagnosis skills
The working appearance of skf imported bearing components is fatigued, indented or partially corroded; skf imported bearings will exhibit periodic pulse signals during operation. This periodic signal can have sensors mounted on the housing (speed type or Acceleration type) to accept; after the analysis of the oscillating signal to confirm the fault of skf imported bearings.
Features: Oscillation diagnosis skills are widely used, online monitoring can be completed, diagnosis is fast; the diagnosis theory is sophisticated.
Application scale: unique detection of faults in skf bearings in rotating machinery.
Second, the iron spectrum diagnosis skills
Skf imported bearing wear particles have close contact with their working conditions. The smooth oil with wear particles passes through a strong magnet. è°‡ 懦 淖饔 淖饔 淖饔 æ‹¢ ム匆 匆 匆 匆 匆 匆 匆 匆 媛 媛 媛 媛 媛 媛 媛 媛 媛A little purple halo 14. 瞪 鞫ㄠ鞫ㄠ鞫ㄠ鄄旎蛟诙æ³çž§éƒ 鄄旎蛟诙æ³çž§éƒ 鄄旎蛟诙æ³çž§éƒ é¦ ç—ªè½ ç—ªè½ ç—ªè½ ç—ªè½ sk skf imported bearings work conditions.
Features: the machine does not need to collapse, the investment is low; the effect is good, can find the early fatigue failure of skf imported bearings, can do the wear mechanism discussion.
Application scale: It is suitable for the diagnosis of skf imported bearings with smooth oil smooth; it is difficult to import bearings with smooth skf.
Third, the oil film resistance diagnosis skills are smooth and outstanding skf imported bearings; because of the role of the oil film; there is a large resistance between the inner and outer rings. Therefore, after measuring the resistance of the skf imported bearings inside and outside the ring; can be abnormal on the skf imported bearings Make a distinction.
Features: The same evaluation criteria can be applied to different working conditions. Abnormal diagnosis of external surface shedding, indentation, cracks, etc. is poor.
Application scale: suitable for occasions where the rotating shaft is exposed.
4. Fiber-optic monitoring and diagnosis skills Fiber-optic monitoring is a diagnostic tool for extracting signals directly from the skf imported bearing ring. The displacement sensor made of optical fiber bundles includes a transmitting fiber bundle and a receiving fiber bundle. The light is passed by the transmitting fiber bundle. The end face of the sensor and the outer surface of the skf bearing ring are reflected back; received by the receiving fiber bundle; converted into an electrical signal by the photoelectric element; after the analysis of the electrical signal; can evaluate the working condition of the skf bearing.
Features: The fiber displacement sensor has high sensitivity and directly extracts the signal from the skf imported bearing surface; the signal-to-noise ratio is improved, which can directly reflect the manufacturing quality, appearance wear, load, smoothness and void condition of the rolling bearing.
Application scale: suitable for machines that can install sensors in skf imported housings.
Five, temperature diagnosis skills skf imported bearings if an abnormality; skf imported bearings will change the temperature. Therefore; according to temperature changes; can be diagnosed skf imported bearing problems; but the ability to discriminate is very low.
Features: a simple diagnosis, the skf imported bearing burns discriminating effect is better.
Application scale: Applicable to the simple routine diagnosis of skf imported bearings in the machine.
6. Acoustic emission diagnosis skills Metal materials because of internal lattice dislocations, grain boundary slippage may be due to the onset and development of internal cracks; both require the release of elastic waves; this representation is called acoustic emission appearance. When rolling bearings break off or crack ; will emit different types of acoustic emission signals; according to this, can evaluate the skf imported bearing conditions.
Features: rapid diagnosis, concise, online monitoring.
Application scale: new skills developed in recent years; less use in skf import bearing condition monitoring.
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