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随着重型液压和风动凿岩机的推广应用,对柱齿钎头的需求日趋增加。河南洛阳兴隆机械厂试制的Φ51毫米冷压球齿钎头获得成功,1983年11月通过省级鉴定,得到好评。Φ51毫米四齿、五齿、六齿冷压球齿钎头是采用优质合金,特选钢材,独特的强韧化热处理工艺冷
With the popularization and application of heavy-duty hydraulic and pneumatic rock drill, the demand for cylindrical tooth bit is increasing. Henan Luoyang Xinglong Machinery Factory trial production of Φ51 mm cold pressure ball tooth bit success, in November 1983 passed the provincial appraisal, has been well received. Φ51 mm four teeth, five teeth, six teeth cold pressure ball tooth bit is the use of high-quality alloys, selected steel, a unique heat treatment toughening cold