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用球墨铸铁铸造地质刮刀钻头,比用焊接方法有以下优点:以铁代钢,加工容易,制做成本低。石油地质钻孔的钻进试验表明,这种钻头可取得较好的经济技术效益。
Casting ductile iron with geological scraper bit than the welding method has the following advantages: to iron steel, easy processing, manufacturing costs low. Drilling tests of petroleum geological drilling show that the drill can achieve better economic and technical benefits.