Factors affecting the service life of hammerhead of two-stage crusher

As an alternative to the traditional coal gangue crusher, the new two-stage crusher has become a popular star product for many users such as brick factories and coal mines due to its reasonable structure and easy to use The crushing principle of the hammer is the same as that of the hammer, which is used to crush materials During the working period, the hammer is impacted by materials as well as by impact In this way, the working face of the hammer will be damaged and the surface shape will change after long-term repeated use Therefore, the hammer becomes a frequent part of Zui replacement during the use of the two-stage crusher Many users are lack of the right The maintenance knowledge of the hammerhead is not clear about the factors that lead to the shortening of the service life of the hammerhead of the two-stage crusher Next, we will interpret the factors that affect the service life of the hammerhead of the two-stage crusher 1 The structure design of hammer head and the structure design and geometry of product quality hammer head have a great influence on its mechanical properties and internal metallographic structure after heat treatment Especially for hammerheads with large thickness and size, the impact is more prominent Through the analysis of the failure modes of hammerheads made of different materials, it can be seen that the main cause of hammerhead fracture is the existence of different degrees of internal or surface defects Due to the existence of defects, most hammers break at the early stage of use Therefore, in the production of hammerheads, it is necessary to develop a reasonable casting and heat treatment process 2 Technical parameters of shale crusher technical parameters of shale crusher will also affect the service life of hammer head, among which the main ones are the power and speed of rotor They are not only related to the production capacity of crusher, but also to the degree of impact hardening of hammer head If the hammerhead has good impact hardening, its service life will be extended 3 The larger the block size and hardness of the crushed material, the higher the toughness requirement, and the higher the material hardness, the higher the hardness requirement of the hammer head material The crusher of specific model should adopt appropriate feeding granularity, which will extend the service life of hammer head to a certain extent 4 Adjustment of internal clearance of shale crusher internal clearance of double stage crusher mainly refers to the clearance between rotor body, lining plate and hammer head The new shale crusher has no screen bottom, which greatly saves the serious grinding of the equipment due to the accumulation of materials Coal gangue crusher, in the process of use, after the hammer head is ground, the position of the hammer head on the strip can be adjusted to extend the service life 5 Repair the worn parts in time According to the user's practical experience, during the use of shale crusher, proper maintenance can also improve the service life When each shutdown, the hammer head can be repaired with wear-resistant electrode to continue to use Although it is a drop in the bucket, the long-term calculation can still extend the continuous service life At present, the material of the hammerhead of the two-stage crusher includes manganese steel, forged wheel hub of the train, high chromium material and alloy material The old crusher - coal slag crusher generally adopts the hammerhead of high manganese steel, which has short service cycle for the crushing of coal gangue, insufficient resistance to damage and wear With the development of technology, there are forging hammers, high chromium hammers and double alloy hammers for train wheel hub after coal slag crusher The hub of the coal slag crusher of the train wheel is forged with 65Mn, which is the wear-resistant material of the hammer head The so-called 65Mn is generally called the wheel hub of the train The hammer head forged with this wear-resistant material has high wear resistance, strong toughness, impact resistance and is not easy to break It is the Zui excellent choice for the hammer head demander of the crusher.