Multiple dies for ribbon

Details Multiple dies for ribbon Multiple dies for ribbon

1976-10-12

1977-06-07

Bascomb, Jr., Wilbur L.

Chemistry: physical processes

Physical processes

Crystallization

156608, 156617SP, 164337, 164361, 249107, B01J 1718, B22C 908, B22D 3900

Patent

active

040280594

ABSTRACT:
The invention is an improvement in apparatus for growing crystalline bodies from the melt. The apparatus comprises a crucible and a novel die assembly in which the die assembly is made in two parts and essentially comprises inner and outer concentric members. The inner and outer members are spaced from one another to define an annular lower capillary section. One member is longer than the other and is shaped so that its upper end overhangs and engages the upper end of the other member. A plurality of upstanding dies are formed in the upper end of the longer member. Each of the dies has a top end surface and is slotted in a generally radial direction with the slots being deep enough to intersect the annular space between the two members. The slots in the dies serve as capillaries to provide communication between the lower capillary section and the top end surfaces of the dies.

REFERENCES:
patent: 3241925 (1966-03-01), Van Cakenberghe
patent: 3245112 (1966-04-01), Williamson
patent: 3687633 (1972-08-01), LaBelle, Jr. et al.
patent: 3953174 (1976-04-01), LaBelle, Jr.

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