论文部分内容阅读
一种新型回转钻进用钻头其钻头体上有可与钻柱连接的接头和钻头工作面,切削齿以多种形式安装在钻头体孔眼中,喷嘴也是如此;钻头体上开有供钻进液流向钻头的通道。制造这种钻头的方法是:至少由钢制材料制成部分钻头体,在钻头体部分用期望达到的结构模板形成安装切削齿的孔眼,在钻头工作面上涂一层易熔硬质材料,加热涂层钻头体部分,使易熔材料熔解,冷却后易熔材料固化,然后从孔眼中取出模
A new type of rotary drilling bit has a bit body which is provided with a joint which can be connected with the drill string and a bit working face. The cutting tooth is mounted in the drill body hole in various forms, as is the nozzle. The bit body is provided with a drilling The flow of liquid to the drill channel. The method of manufacturing such a drill bit is that at least a part of a drill bit body made of steel material is formed in the bit body portion with the desired configuration of the mold to form a hole for cutting teeth and a bit of fusible hard material is applied to the drill bit face, Heating coating bit body part, so that the melting of eutectic material, after cooling the eutectic material curing, and then remove the hole from the mold