The method of making the mobile crane bearing

Domestic repair welding is commonly used for mobile crane bearing wear, bushings, pitting and other methods, but when the shaft is made of 45 # steel, quenched and tempered treatment, if only by surfacing welding processing, precision spindle bearings can produce welding stress, in the case of heavy load and high speed, can appear the phenomenon of crack and fracture at shoulder, if use the stress relieving, is difficult to operate, and the processing cycle is long, the high cost of maintenance; When the material of shaft for HT200, adopts the cast iron welding is not ideal. Some companies will use a brush plating with higher maintenance technology, laser welding, micro arc cold welding, etc., even the maintenance technology often require high requirement and high fees.

For the above repair technology, enterprises have less common in Europe and the United States, Japan and South Korea, the developed countries generally USES a high polymer composite material technology and nanometer technology, polymer technology can site operation, effectively improve the maintenance efficiency, and reduces the maintenance cost and maintenance intensity.