1. What is the function of the counterattack board? 
The role of the impact plate in the impact crusher is mainly to adjust the size of the discharge port and insurance. The gap between the lower end of the counterattack plate and the rotor is changed by changing the height of the counterattack plate, so as to realize the adjustment of the discharge port and the effect of adjusting the particle size of the crushed stone. The article mentioned that the impact crusher mainly crushes materials by means of impact energy. When the impact plate encounters materials with excessive hardness and pressure, it will automatically increase the discharge port and spit out large and abnormal crushed materials to protect The whole machine.  2. How to buy a counterattack board? 
When purchasing wear-resistant parts such as counterattack plates, it is recommended to purchase them from the original manufacturer of the equipment to avoid mismatch between the wearing parts and the equipment. Jiaozuo Zhongxin provides customers with the supply service of wear-resistant parts and the * installation service, all from the customer's point of view. The types of counterattack plates mainly include polyline type and arc type. The materials mainly include high manganese steel and high wear-resistant materials. According to the types and materials of the two, they exist in terms of structure, crushing effect, and wear resistance. Certain differences, users also need to choose the corresponding counterattack plate reasonably according to their own equipment type, in order to ensure the crushing efficiency and productivity of the impact crusher.