德兴铜矿圆锥破碎机衬板的磨损失效分析

Analysis of the Wear Failure of Cone Crusher Liner at Dexing Copper Mine

根据德兴铜矿工况条件 ,对圆锥式破碎机衬板进行了磨损失效分析。SEM分析表明 :凿削、切削与挤压 (冲击 )坑是其主要磨损方式 ;低周疲劳导致的疲劳剥落也是其失效形式之一 ,因此 ,对衬板材质的要求是 :既要求具有很高的表面硬度 ,以抵抗矿石的凿削与切削 ,又要求具有很高的强度与韧性 ,以抵抗低周疲劳与冲击载荷。为此 ,选择高锰钢合金化 ,提高衬板的初始硬度和加工硬化速率 ,同时高锰钢的冶金。

In view of the work conditions of Dexing Copper Mine,the analysis of the wear failure of cone crusher was made. SEM analysis showed that drilling, cutting and squeezing (impacting) of ore which resulted in pits were the dominating wear means and the fatigue spalling caused by low frequency fatigue was one of the wear failure means.Therefore, the liner materials should be required to have both very high surface to resist the drilling and cutting of ore and very high strength and toughness to resist low frequency fatigue and impact load. So,high manganese steel alloying was selected to increase the preliminary hardness and work hardening rate of the liner. Meanwhile, the improvement of metallurgy foundry and heat treatment qualities of high manganese steel was also a factor that couldn't be ignored.