DJM 陶瓷金屬復合立軸轉子/沖擊式破碎機蹄錘技術介紹

DJM metal ceramic composite ShoeHammer（Impeller，Anvil）of VSI Crusher technology introduction

立軸轉子離心/沖擊式破碎機是有立軸的高性能破碎機。轉子呈環形，裝有馬蹄形的錘棒。獨特的沖擊轉子配合嚙合的環形襯板，形成超大且有針對性的破碎比。 轉子離心破碎機物料中的每個顆粒在轉子中高速旋轉，然后甩向固定的反擊板。反擊板可由環形襯板或由砂床組成。石打石破碎原理將磨損降至最小程度。

蹄形錘頭是轉子離心/沖擊式破碎機的關鍵配件，傳統錘頭多以高鉻鑄鐵或合金模具鋼鑄造，利用高鉻鑄鐵或合金模具鋼硬度高的特點來提高耐磨性，錘頭的工作狀況具有高沖擊，高頻率，高耐磨等特點，為了提高蹄形錘頭的耐磨及抗沖擊性能，DJM選用高鉻鑄鐵（或馬氏體鋼）復合ZTA陶瓷鑄造制作蹄形錘頭，采用粉末冶金制芯結合鑄造燒結工藝，在高鉻鑄鐵（或馬氏體鋼）材料表面鑄入陶瓷顆粒形成陶瓷金屬復合材料加強筋，這層復合層的耐磨性能可達高Cr材料的3–4倍，同時這一復合層的厚度可制成達到原備件厚度的1/3，陶瓷復合材料的壽命約為高Cr合金材料的2-3倍以上。提高蹄形錘頭工作面的抗磨性能，從而獲得即耐磨且抗沖擊的錘頭。

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.

Product include:

High Cr cast iron + ZTA ceramic particles

Martensite steel + ZTA ceramic particles

High Mn Steel + ZTA ceramic particles