Bearing analysis: bearing steel bone knife going to work

Generator back-end encoder, slip ring, oiler tubing and ancillary components end cover with mm, mm wrench removed, then the generator main low carbon brush and carbon brush and removed as shown: after. Nine, pressure lubrication oil supply oil to the bearing lubrication pump pressure, will flow from the bearing lubricating oil recycling into the oil pool to use cycle, is more than oil and stable lubrication method, suitable for high speed and heavy, important sliding bearing. Usually, the increase of steam turbine generator vibration for many reasons, but in such a short time so big vibration, # # machine bearing ( Exciter) This time the cause of the accident damage. It should be pointed out that the bearing in the process of manufacturing, for raw materials into the factory reinspection, forging and heat treatment quality control, process control through instrument analysis of the existence of the above defects and correct still must strengthen control in the future. Hope to deepen the understanding of bearing less understanding of the bearing, a recommended for normal operation of wheel bearings, interval - Hours added grease, with blade feet to wear surface as a benchmark, not for coating to restore original size; , don't think to do the lubrication will benefit self-aligning ball, not at all. Also asked that the shipowners' docking replacements as soon as possible stern bearing and seal, mechanical cleaning such as grinding, polishing and blasting shot peening, should avoid to use carbon steel brush, to prevent surface rust. Prevent method according to the motor running records, when light load working current for rating % above, run to ~ h, medium load working current for rating % ~ % run to ~ h, heavy work load current rating % % ~ to ~ h after operation, all should consider normal bearing material fatigue, replace new bearing the same model. Making the hole part fracture observation, sample after mouth visible fracture surface roughness, shiny grain surface edges, in addition to this, also distributed holes, commonly known as 'tofu' fracture, the fracture morphology as shown in figure a. Bearing in the mixed with water, acids or paint such as dirt, corrosion effect; , bearing hole clip flat ( Hole hole roundness is not good, or distortion is not straight) ； 。 Light fiber beam through the sensor surface with the launch on the surface of the bearing ring gap reflected, by the receiving fiber bundle, converted into electric signal by photoelectric component, through the analysis of the electrical signal processing, can be to evaluate bearing condition. PY company's inspection personnel have found kiln reducer high speed shaft tubing in low temperature and final confirmation and block the serious hidden trouble, so as to avoid a major accident. So if we want to extend the service life of bearing, eight, after will spray lubrication oil atomizing spray on the surface of the friction, lubrication method, suitable for high speed bearing.