DEVICE FOR GROUP PULLING OF MONOCRYSTALLINE FILAMENTS FROM REFRACTORY MATERIALS Russian patent published in 1995 - IPC

FIELD: growing of monocrystal filaments. SUBSTANCE: device for group pulling of monocrystalline filaments from refractory materials consists of high-temperature pull chamber and additional chamber installed on cover of pull chamber. Pull chamber is vacuum type. Installed in vacuum pull chamber are boat heater with melt, block of shapers and fixing cooler. Cover of pull chamber has filament outlet. Roller pulling mechanism is located in additional chamber. Upper rollers of pulling mechanism is located in additional chamber. Upper rollers of pulling mechanism are installed vacuum-tight in outlet slot of additional chamber. Filament outlet from pull chamber is screened by fixing cooler having slot of variable cross-section. Fixing cooler installed in pull chamber has external vacuum-tight manipulator. EFFECT: higher efficiency. 2 cl, 2 dwg