Because the vulcanizing machine is made of metal and has high hardness, it is subject to vibration and other combined forces during the production and operation process, which causes the parts to form gaps and cause wear. Traditional repair methods include surfacing, thermal spraying, brushing, etc., but several methods have certain disadvantages: surfacing will cause the surface of the part to reach a high temperature, causing the part to deform or crack, affecting dimensional accuracy and normal use. It can also cause fracture when it is severe; although the brush crossing has no thermal influence, the thickness of the crossing layer cannot be too thick, the pollution is serious, and the application is also greatly restricted. At present, many western countries use polymer composite methods to solve the above problems. Among them, the most mature application is the Meijiahua technology system. It has comprehensive performance and can be machined at any time, which can meet the use requirements and accuracy after repair, and can also reduce the shock and vibration experienced by the equipment during operation and prolong its service life. Because the material is a "variable" relationship, when an external force strikes the material, the material will deform and absorb the external force, and expand and contract with the expansion or contraction of the bearing or other components, always maintaining a tight fit with the components, reducing the probability of wear. For the wear and tear of large-scale vulcanizers, "molds" or "matching components" can also be used to repair the damaged equipment on-site, avoiding the overall disassembly of the equipment, ensuring the maximum fitting dimensions of components, and meeting the production and operation requirements of the equipment.