Bimetallic composite hammer uses the high-speed impact of plate hammer and the rebound effect of impact plate to make the material broken by repeated impact. The plate hammer is fixed on the high-speed tampered rotor, and several impact plates are placed along the crushing chamber according to the gap angle. When the material enters the guide area of the hammer, it is first attacked by the hammer and initially crushed. At the same time, it gains kinetic energy and rushes to the impact plate at high speed. After the material collides with the return hammer and breaks again, it is bounced back to the calling area of the hammer and is impacted by the hammer again. Repeat several times until it is crushed to the required size and pushed out of the extruder.

　　Bimetallic composite hammerhead is made of high chromium cast iron. Its main advantage is that under the condition of high pressure and impact force, the surface of the parts will harden, which makes the parts obtain good wear resistance, so it is most widely used in the market. In recent years, the cement and power industry has developed rapidly. The crushing of block stone, especially the stone with high silicon content, has short service life and high cost. Through repeated tests and trials, our company has effectively solved the problem of compactness of dual alloy composite metal structure and hardness of composite wear-resistant layer. The viscosity of centrifugal pressure composite casting with two kinds of alloys has fully met the requirements. The hammer head is made of ultra-high hardness alloy material with high wear resistance, high impact toughness, longer service life of hammer head and stronger crack resistance of hammer handle