螺纹螺纹 螺旋线圈72Ni-15.5Cr-0.95（Cb Ta）-2.5Ti-0.70Al-7.0Fe耐腐蚀和耐热合金采购规范

[中文适用范围]： 该规范涵盖由统一编号系统标识为 UNS N07750 的时效硬化镍基合金成型线材制成的紧密缠绕螺旋线圈螺钉螺纹衬套。衬套线圈的内表面在组装到攻丝的螺纹孔中后，提供标准的 60 度统一形式内螺纹。主要用于在高温合金中提供坚硬、光滑的内螺纹，使用温度高达约 1000 °F，或需要低渗透率的场合，以及用于修复磨损或损坏的内螺纹。 [外文原描述]： This specification covers closely-wound helical coil, screw thread inserts made from an age hardenable nickel base alloy formed wire of the type identified under the Unified Numbering System as UNS N07750. The inner surface of the insert coil, after assembly into a screw thread tapped hole, provides internal threads of standard 60° Unified Form.