Kiln reproduction process, due to a series of questions posed to stop the kiln more, so in some small problems, most would choose to do a simple treatment, rather than be completely resolved. In the production of rolling ring cracks is more serious situation, but at the beginning of the kiln rolling ring just shows a crack, over time this road through cracks extending from the direction of the foreign economy, for small cracks Use side to do some simple soldering process, continue to use after processing, but this does not solve the fundamental problem, which ultimately makes the road into a crack crack, was forced to stop the kiln for processing. Double Roll Crusher ring during operation of the rotary kiln is fixed to the cylinder and relative sliding plate, the gap between the roller and the backing ring is increased to promote further deterioration kiln line. Thus, while rolling ring as a "rotation", while the geometric center of the rolling circle with the center of rotation of the cylinder as a "revolution", is in the process of rolling ring run periodically generated peak stress, alternating loads role. On the other hand, there are some rolling ring itself processing defects, such as holes, loose, cracks, etc. These defects with the deterioration of operating conditions and development until fracture occurs. After the first cracks appeared, did not take the right approach and measures welding, but did not manage to prevent the further development of cracks, resulting in cracks rolling ring fracture, rolling ring cracks below: reproduced please specify Henan YuFeng Heavy Machinery