A small hole tapping contrast experiment is carried out on GH4169, a kind of deformable nickel base high temperature alloy, with a standard tap and a modified tooth tap.

• 采用修正齿丝锥和标准丝锥对Ni基变形高温合金GH4 1 6 9难加工材料进行了小孔螺纹攻丝对比试验。