Methods for Improving the Abrasion Resistance of Rolling Rolls
Rolling is an important process in the manufacture of metal materials. The role of the rollers in the rolling process is very important. The roll gap must be tightly controlled during the rolling process to ensure that the rolling is carried out in a uniform thickness. Therefore, the wear resistance of the roller directly affects the production efficiency and product quality. Therefore, improving the wear resistance of the roller has become an important issue in factory operations.
1. Use advanced materials
Roll materials must have certain wear resistance. The type of roller material usually used in rolling is high-chromium cast iron. The hardness of high-chromium cast iron is higher than other materials, and its contact fatigue strength is also very high. Therefore, using rollers made of advanced materials with good wear resistance and contact fatigue strength can improve the wear resistance of the roller.
2. Use surface treatment
At present, in some plates, strip and wire production processes, surface treatment of the roller is usually performed to improve its wear resistance. The surface treatment reinforcement can increase its abrasion resistance, but at the same time the hardness of the alloy layer is often low, which reduces its comprehensive service performance. Therefore, it is necessary to reasonably select surface hardening technology and strengthen the analysis and research on the relationship between surface hardening process parameters and depth of hardening layer and hardness.
3. Dynamic balance correction
In order to ensure the accuracy between the roller and the product, the roller must be static and dynamic balance correction. This can reduce the vibration of the entering material caused by the unbalanced load, reduce the load and friction generated by the unbalanced load on the roller surface and reduce the wear of the roller, thus improving the wear resistance of the roller.
4. Pay attention to maintenance and protection
The rollers need to be regularly tested and maintained during production to reduce the production stress and prolong its service life. In the process of using the roller, the lubricating oil shall be applied, and the internal and external surfaces of the roller should be wiped regularly to remove the adsorbed metal chips and impurities. In addition, during sliding, the vibration of the roller should be minimized to prevent the surface from being worn. The correct operation and maintenance of the roller can prevent the premature wear of the roll, thus improving the wear resistance of the roll and prolonging its service life.
5. Choose heat treatment
Some roll materials are prone to wear and tear. In order to improve its abrasion resistance and increase its service life, heat treatment technology can be applied, so that the roller surface can form protective layer, which can effectively reduce the wear of the wheel surface. In addition, appropriate heat treatment can also improve the residual stress of the roller and make its strength balance, so as to reduce the risk of fracture and improve its service life.
总而言之，想要提高轧辊耐磨性的最佳方法是考虑使用先进材料，采用表面蒸汽处理，进行动态平衡校正，定期维护和保护，以及正确制定热处理工艺。在轧线正确应用这些方法的基础上，轧辊的耐磨性将得到显著提高。
