APPARATUS TO PRESS PIECES IN DIFFUSION WELDING Russian patent published in 1994 - IPC

FIELD: diffusion welding in vacuum and protecting gasses. SUBSTANCE: apparatus has upper and lower ring-type supporting plates, ring-type magazine with cam members, tightenings with flanges, punch and ring-shaped die. Additional plate is located inside upper ring-type supporting plate, centered relatively to lower supporting plate and is connected wit it by central tightening with two half-rings and wedge. Punch is placed in ring-type clearance between upper and additional supporting plates and die - on low supporting plate coaxially with punch. EFFECT: apparatus is used for pieces tightening in diffusion welding. 2 dwg