Mold for direct press molding of optical glass element

Glass manufacturing – Apparatus made of special material – Ceramic material

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Details

6537415, 249134, C03C 934, B26B 734

Patent

active

046067507

ABSTRACT:
A mold used for manufacturing optical glass parts by the direct press molding of lumps of raw optical glass. The pressing surface of the mold is made of a material comprising .alpha. type SiC or amorphous SiC or a mixture of both. The pressing surface may be a coated film on a base body of hard alloy or high density carbon.

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patent: 3435881 (1969-04-01), Smith et al.
patent: 4139677 (1979-02-01), Blair et al.
patent: 4391622 (1983-07-01), Alting et al.
patent: 4425407 (1984-01-01), Galasso et al.
patent: 4432957 (1984-02-01), Gupta et al.

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