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为了技术上目的需要钻孔弯曲时,往往采用偏心楔子进行偏斜。但当钻孔过于弯曲需要纠正时,使用偏心楔子就不可能取得理想的效果,我队最近试用偏心钻头进行纠正钻孔弯曲,效果很好。现将试用情况介绍如下:一、偏心钻头规格及材料:钻头规格如下,图 1、2、3系用旧铁砂钻头改制,加厚部分可用铁砂钻头剖开焊上合金,其种类视岩石可钻性而定。
Eccentric wedges are often used for deflection when drilled for technical purposes. However, when the drilling is too curved and needs to be corrected, the use of eccentric wedges can not achieve the desired results. Recently, our team tried out the eccentric drill bit to correct the drilling bending and the effect was very good. The trial conditions are introduced as follows: First, the eccentric drill specifications and materials: drill specifications are as follows, Figure 1,2,3 with the old iron sand drill bit restructuring, thickened iron ore bit can be cut open welding alloy, the type of rock as drilling Depending on sex.