Crushing machinery and equipment in the gravel production line are generally used: jaw crusher, impact crusher (when the hardness of the material is small), cone crusher (when the hardness of the material is too large or corrosive), sand making machine (impact crusher), and sometimes fine jaw crusher, hammer crusher, etc. In the process of crushing operation, crushing machinery and equipment mainly rely on its wear-resistant parts to directly impact and impact the stone. 1. Pay attention to daily operation skills. The vulnerable parts of impact crusher are mainly rotor and plate hammer, and the vulnerable parts of sand making machine (vertical shaft impact sand making machine) are mainly plate hammer, alloy cutter head, liner, rotor, jaw plate and side guard plate, jaw crusher, hammer crusher and cone crusher on impeller. Mastering the correct daily working skills of sand and gravel machinery can effectively reduce the loss of grinding efficiency and prolong the service life of wear-resistant parts. For example, when the jaw crusher is working, the bolt of the jaw plate vibrates and the nut is loose, which makes the jaw plate wear worse and produces a lot of noise, which may lead to the jaw plate falling off or folding. Therefore, in order to prolong the service life of the jaw plate, it is necessary to check the nuts and bolts frequently to prevent the jaw plate from loosening and breaking, thus prolonging the service life of the jaw plate, reducing the cost and improving the working efficiency. For another example, the front of the hammer head of the hammer crusher should be replaced in time during use, which can greatly increase the service life of the hammer head. At this point, the sand and gravel machinery factory should shoulder the responsibility, give customers comprehensive operation training, and master the skills of prolonging the service life of sand and gravel machinery and equipment and extremely wear-resistant parts, and the thoughtful after-sales service of Zhengzhou Ding Sheng Company has already experienced it. 2. Different types and specifications of hammers and different stone breakers are installed in the correct position. The basic principle of choosing hammer head is that the small hammer head is made of high chromium composite material and the big head is made of high manganese steel. Corrosive materials are not suitable for forging hammers. The service life of hammerheads in cement plants and sand and gravel plants in different regions is also different. The hammer with the longest service life on the market is the one with tungsten-titanium alloy cemented carbide blocks. Of course, it also needs advanced casting technology and sophisticated chemical analysis instruments and other hardware equipment. The physical and chemical properties of different materials are different, and the wear of wear-resistant parts is also very different. For example, quartzite is crushed by impact crusher, and the plate hammer is easy to break. At this time, the cone crusher should be selected, which will not cause excessive wear on the mortar wall of its wear-resistant parts. 3. Choose casting wear-resistant parts with the same specifications from manufacturers with strong casting strength, and use them in the same cement plant and gravel yard, with different service life because of different quality. Because each manufacturer's casting technology, chemical matching and the perfection of corresponding hardware and equipment are different, the quality is also very different. When choosing the manufacturer of casting wear-resistant parts, we must inspect the factory, including the management of the factory, the number of engineers and the technical level of the equipment. , and check the feedback from customers of gravel factory who use its products.