Method for reducing surface damage of wheel tyre
With the development of the railway in our country, it is the development direction of the freight transportation to develop the heavy haul train in order to improve the comprehensive transportation capacity, reduce the transportation cost and improve the economic benefits. Wheel and rail as the railway on the interaction of two key parts must adapt to the demands of railway transport.
There are many factors affecting the service life of wheel and rail, of which wear, peeling, fatigue, plastic deformation and thermal damage are the most important. The rails and wheels made of ordinary materials and techniques can not meet the requirements of heavy axle loads and heavy transport conditions of combined trains. Under the condition of heavy haul railway transportation, wheel and rail are bound to accelerate the damage, and the cost of daily maintenance is also increased.
The mechanical properties of tyre material craft, tyre, puts forward new requirements for tyre surface damage resistance。
At present, some improvements have been made in the following aspects: first, to improve the contact stress and wheel diameter between wheel and rail, and to reduce contact stress with large wheel diameter. Two, including the performance improvement of wheel: control of non-metallic inclusions in steel and alloy steel to improve the performance of join, improve the pearlite interlamellar spacing and morphology. Improve abrasion resistance and contact fatigue resistance. Three, change the wheel form size, improve the surface damage.
Through the above several aspects research and improvement, enhances the wheel surface anti - damage ability。