PROCESS OF MANUFACTURE OF HIGH-STRENGTH CONDUCTIVE COMPOSITE CONDUCTOR Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: process provides for manufacture of high- strength conductive composite conductor on the basis of copper and niobium alloy. In compliance with process of vacuum arc melting with the aid of consumable electrode ingot having diameter up to 130.0 mm and mass content of niobium up to 5.0-35.0% is produced which is drawn into ingot of 30.0 mm in diameter and then deformed to final dimension with at least one intermediate thermal treatment at 250-550 C for the duration of 1-10 h. As a result conductors with σ =1200-1300 MPa and conductance of 50-60% of that of pure copper are manufactured. For manufacture of conductors with higher characteristics rod is cut into measured lengths which are assembled into jacket of copper or copper alloy at intermediate stage of deformation. In agreement with this method 1700 MPa with conductance of approximately 70% of that of pure copper was achieved. Achieved level of properties of conductor enables pulse magnetic systems designed for ultimate high magnetic fields of 70 T to be manufactured. EFFECT: improved properties of high-strength conductive composite conductors. 2 cl, 2 tbl