CAJ | 학술논문

目前，国内外煤矿坑道水平定向钻探用无磁钻杆材料均选用铍铜QBe2（ C17200），该合金材料的延伸率低，钻杆易出现断裂事故。为解决这一问题，研究了高强度钛合金钻杆，探讨了钻杆的材料选择及螺纹结构设计。试验了钻杆的加厚工艺，其强度达到了设计要求，并通过现场试验验证了钻杆的使用效果。
목전，국내외매광갱도수평정향찬탐용무자찬간재료균선용피동QBe2（ C17200），해합금재료적연신솔저，찬간역출현단렬사고。위해결저일문제，연구료고강도태합금찬간，탐토료찬간적재료선택급라문결구설계。시험료찬간적가후공예，기강도체도료설계요구，병통과현장시험험증료찬간적사용효과。
At present, beryllium copper non-magnetic drilling rod material is used for horizontal directional drilling in coal mine tunnel both in China and abroad.Because of the low elongation of this alloy material, the drilling rod is easy to be bro-ken.In order to solve this problem, high strength titanium alloy drill rod is developed;the material selection and the drill pipe thread structure design were discussed.The tests on upsetting process show that the strength is up to the design goal and the field tests verify the application effect of the drilling rod.