论文部分内容阅读
人造金刚石钻进时用什么钻头开孔好?用硬合金钻头开孔,受到岩石硬度的限制.硬合金钻头在坚硬岩石中钻进,效率低,成本高.采用大口径的人造金刚石钻头开孔也存在效率和成本问题.用钢粒钻头开孔,由于残留钢粒的存在,换径钻进时往往使人造金刚石钻头损坏而过早报废. 我队在漓渚铁矿区施工,地表岩石坚硬而且破碎,不得不采用钢粒钻头开孔,经三
When using artificial diamond to drill, what kind of drill bit is used to drill holes is good? With hard alloy drill holes, limited by the hardness of the rock.Hard alloy drill bit in hard rock drilling, low efficiency, high cost.Using large diameter synthetic diamond bit drilling There are also efficiency and cost problems.With the opening of steel bit, due to the presence of residual steel particles, when the diameter change drilling often make artificial diamond bit damage and premature scrapped.Our team in Lizhu iron ore construction, rock hard surface And broken, had to use steel bit drilling, by three