【摘要】 通过对攀钢１２０ｔ 转炉出钢口长寿化技术的确立和镗孔技术的应用，实现了整体出钢口整体更换，达到了提高出钢口使用寿命，稳定出钢时间和出钢温降，减少下渣量和提高合金收得率的效果，为减轻劳动强度、稳定工艺操作、改善钢质量起到了积极作用更多还原

【Abstract】 Theresults ofintegral change of steeltapping hole ,extending service life ofit,stably tapping time andtapping temperature drop ,reduction ofslag carring over and increase of alloy recovery are achieved by the establishment oflong life technology oftapping holein 120 ton converter at Pangang andthe application of bor ing technique.Itis of particularadvantagetoreducelaborstrength ,stabilizetechnologicaloperation andimprove steelquality .更多还原