DJM metal ceramic composite ShoeHammer（Impeller，Anvil）of VSI Crusher technology introduction
Rotor centrifugal and Impact crusher (VSI) is a high-performance crusher with a vertical shaft。 The rotor is circular with horseshoe-shaped impellers. This unique impeller rotor, combined with the anvil ring, achieves a very large targeted crushing ratio. Every single particle of the input material undergoes extreme acceleration in the patented twin-chamber rotor and is subsequently thrown against the fixed impact wall. The impact wall can consist of an anvil ring or a rock shelf. Thanks to the rock-on-rock principle, only very few machine parts are susceptible to wear.
Horseshoe hammer is the key part of the rotor centrifugal / impact crusher, the traditional hammer is usually casted out from high-chromium cast iron or alloy tool steel to improve its wear resistance by high hardness of the material. The working condition of the hammer requires it to be against high impact, high-frequency and high wear resistance.In order to improve the wear and impact resistance of the horeshoe hammer, DJM selects high-Cr cast iron(or martensite steel) ceramic composite materials, which forms the ceramic metal composite reinforcement through injection of ceramic particles into the high-Cr material(or martensite steel), the composite layer hardness is harder than high Cr material 3-4 times, at the same time, the composite layer thickness can be made to a third of the thickness of the original spare parts. Life span of the ceramic composite material is more than 2 times of a high Cr alloy material. Both feature of impact resistance and wear resistance of the horse shoe is achived after improving the wear resistance of the working surface.
High Cr cast iron + ZTA ceramic particles
Martensite steel + ZTA ceramic particles
High Mn Steel + ZTA ceramic particles