高压辊磨机压辊磨损的试验分析

Experimental Analysis of High Pressure Grinding Rolls Wear

在分析高压辊磨机工作压辊磨损表现的基础上 ,探讨了工作压辊的磨损机理 ,进而试验分析了几种耐磨材料粉碎花岗岩时的相对耐磨性·指出当高压辊磨机粉碎物料时 ,在两工作压辊之间存在两个程度不同的磨料磨损区·对于诸如含SiO2 较高的坚硬难磨物料 ,普通耐磨材料的磨损主要是磨粒的微切削、微犁沟和碾压疲劳 (或脆裂 )剥落 ,这是导致辊面磨损快的主要原因·采用辊面镶嵌硬质合金柱的压辊将是提高辊面寿命的一个重要途径·

Based on the analysis of wear appearance of high pressure grinding rolls, the worn mechanism of the working rolls was studied and the relative anti wear ability of materials was tested in the condition of rolling granite ore. It is pointed that there exist two worn districts with different wear characteristics in the working rolls. For common anti wear materials, the worn forms are generally micro cutting, micro ploughing up and scaling off by grinding fatigue when grinding with difficult to grinding ores such as SiO 2. Laying carbide alloy pillars on the surface of the working roll will be a good way to improve roll working life.