碎煤齿环是从国外引进的粉煤设备 ,每台机组装有 64件2 17mm上下紧密排列的碎煤齿环 ,作用是将运来的原煤加工成5 0mm的成品煤球。由于齿环基体大多用低合金钢制成 ,齿刃部分堆焊WC材料 ,其价格昂贵 ,堆焊工艺复杂 ,齿环运行工作中 ,载荷撞击部分牙齿端面严重磨损 ,有极少 Pulverized coal gear ring is introduced from abroad, pulverized coal equipment, each unit equipped with 64  2mm 17mm up and down closely arranged broken gear ring, the role is to be transported into the finished coal  0 5mm finished briquettes. Because the tooth ring base is mostly made of low alloy steel, the tooth edge is partially surfacing on the WC material, which is expensive and has a complex surfacing process. In the operation of the ring gear, the tooth surface of the impact part of the load is severely worn,