The driving wheel is an important driving parts, its abrasion resistance is better, for the equipment using the help of the greater. Through the research on the heat treatment for the wheel, can not only improve the hardness of tread it at the same time can increase the hardened layer depth, continuous improvement to meet the new requirements of users demand. The driving wheel is one of the three major part of crane accessories, wheel body working wheel tread, wheel rim inner surface and soft road two side rolling contact, bear a greater contact stress and serious close loss, therefore, becomes the main form of wheel driving wheel wear failure wear is mainly composed of the following two points, the first contact fatigue, which is due to hardening surface layer shallow, basic low hardness, strong in contact stress, hardened layer and the substrate surface of transition zone from 20 to 25mm produce the plastic deformation and the formation of cracks, extending to the surface caused by fatigue spalling: second is the sliding friction, when the wheel is running, contact two side rim Neipei surface and the rail sliding wear, the reason is the crane load and wheel and rail single size precision, wear the formal structure of common causes. Factors influencing the service life of the main wheel wheel body, wheel load bearing structure, the machining accuracy, the material and heat treatment quality.
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