Method of manufacturing a blank for a light-weight mirror with a

Glass manufacturing – Processes – With shaping of particulate material and subsequent fusing...

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65184, 65 36, 65 42, 65 605, 65 608, 65144, 264 23, 264109, 264DIG53, 350320, C03B 23207

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048986046

ABSTRACT:
A method of manufacturing a blank for a light-weight mirror. Graphite molding bodies are positioned at regular intervals on a base that functions as a mirror plate or backing plate. The base is surrounded up to the top of the molding bodies with a graphite wall. The interstices between the molding bodies and between the wall and the molding bodies are filled with granular quartz. The assembly is heated in an evacuated furnace to approximately 1730.degree. C. into a honeycomb-shaped supporting structure that is securely fastened to the base. The graphite molding bodies and wall are removed after cooling. Either a backing plate or a mirror plate in the form of another plate is applied to the resulting supporting structure.

REFERENCES:
patent: 3467511 (1969-09-01), George
patent: 3739455 (1973-06-01), Alvarez
patent: 4020896 (1977-05-01), Mold et al.
patent: 4331383 (1982-05-01), Christiansen
patent: 4408833 (1983-10-01), Gowan
patent: 4466700 (1984-08-01), Christiansen et al.
patent: 4606960 (1986-08-01), Angel et al.

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