宝鸡化工机械厂用于生产压环机的冲模的材质系硬质合金,硬度高,耐磨性能好。最初采用碳化硅砂轮磨削来加工冲模φ19×52的内孔,八小时仅磨去0.02毫米,损耗砂轮20余个。内孔加工余量为0.5毫米,加工一个冲模就需200小时,损耗砂轮达几百个。后采用100号树脂基金刚石砂轮磨削,八小时也只磨去0.6～0.8毫米,效率仍然不高。为 Baoji Chemical Machinery Factory used in the production of pressure ring die material of carbide, high hardness, good wear resistance. The initial use of silicon carbide grinding wheel to process the hole φ19 × 52, eight hours only wipe away 0.02 mm, loss of more than 20 grinding wheel. Hole machining allowance of 0.5 mm, processing a die on 200 hours, loss of wheel up to hundreds. After using 100 resin-based diamond grinding wheel, eight hours only to 0.6 ~ 0.8 mm mill, the efficiency is still not high. for