公开(公告)号：US3794100A

公开(公告)日：1974-02-26

申请号：US3794100D

申请日：1970-06-18

申请人： CRYOMAGNETICS CORP

发明人： RAYMOND J ,  WHETSTONE C

IPC分类号： B22D27/04 ,  H01B12/10 ,  H01L39/24 ,  B22D27/20 ,  B22D19/00

CPC分类号： B22D27/045 ,  H01B12/10 ,  H01L39/2403 ,  Y02E40/644 ,  Y10S505/915 ,  Y10T29/49014 ,  Y10T29/49991

摘要： A plurality of rods are assembled in a predetermined configuration to form a core which is surrounded by a molten matrix metal within a heated crucible. The temperature of the thusly charged crucible''s upper portion is maintained above the matrix metal''s melting point. In this respect, as the heat is applied to the top of the melt, the crucible is maintained in a hot environment while the bottom of the crucible is centrally chilled. In this manner the charge is solidified from the bottom toward the top so that the solidification progresses upwardly and outwardly in a conical pattern. After the controlled solidification is completed the casting is separated from the crucible to form a cored extrusion billet. In one embodiment the rods are separated from the casting and the resulting open holes are filled with superconductive material to form a composite superconductor extrusion billet. In another embodiment the rods themselves are made of a superconductive material so as to eliminate the step of separating the rods from the casting.

摘要翻译： 多个杆以预定构造组装以形成在加热的坩埚内由熔融基体金属包围的芯。 如此将坩埚上部的温度保持在基体金属的熔点之上。 在这方面，当热量施加到熔体的顶部时，坩埚被保持在热的环境中，而坩埚的底部是中央冷却的。 以这种方式，电荷从底部到顶部固化，使得凝固以锥形图案向上和向外前进。 在控制凝固完成后，将铸件与坩埚分离以形成芯挤出坯料。 在一个实施例中，杆与铸件分离，并且所得到的开孔用超导材料填充以形成复合超导体挤出坯料。 在另一个实施例中，杆本身由超导材料制成，以便消除将棒与铸件分离的步骤。