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本文对球磨机各种类型衬板,即ZGMn13衬板、ZGMn13Cr2衬板及ZG42CrMn2SiMo衬板的磨损表面形貌特征进行失效分析,并提出球磨机衬板选材方面的原则。实践表明,球磨机衬板在磨损过程中,一般是高应力碾磨损、凿削式破碎磨损及疲劳磨损的综合表现。由于衬板按装位置不同、磨料硬度,粒度不同以及衬板材质、形状结构等因素影响,衬板磨损的形貌也各不同。其失效方式主要是磨损,其次是断裂。在磨损过程中,磨料夹在衬板与磨球之间,经过磨球与磨料、磨球与衬板、磨球与磨球的撞击和接触,使磨粒受力而刺入衬板表面并产生相对滑移,使衬板表面产生犁皱。同时在压应力作用下,使衬板表面塑性组织产生变形、脆性组织
In this paper, failure analysis of wear surface topography of various types of linings of ball mill, namely ZGMn13 liner, ZGMn13Cr2 liner and ZG42CrMn2SiMo liner, and the principle of ball mill liner selection are put forward. Practice shows that the ball mill liner in the process of wear, wear and tear is generally high stress, chisel type broken wear and wear and tear of the overall performance. Due to the different positions of the liner, abrasive hardness, particle size and liner material, shape and structure and other factors, lining wear morphology is also different. Its failure mode is mainly wear and tear, followed by fracture. In the process of abrasion, the abrasive is sandwiched between the lining plate and the grinding ball, and after the grinding ball and the grinding material, the grinding ball and the lining plate, the impact and the contact of the grinding ball and the grinding ball, the grinding particles are forced to pierce the surface of the lining plate Have a relative slip, so that the liner surface plow wrinkles. At the same time under the action of compressive stress, the surface of the liner plastic deformation, brittle tissue