Title:
MOLDING METHOD OF QUARTZ GLASS
Document Type and Number:
Japanese Patent JPS6265942
Kind Code:
A
Abstract:
PURPOSE: To obtain porous quartz glass having excellent mechanical strength and machineability by adding tetrahalide of Si or Ge to synthetic quartz powder essentially consisting of SiO2 and press-molding the same.
CONSTITUTION: The tetrahalide (e.g.; SiCl4) of Si or Ge is added to the synthetic quartz powder essentially consisting of SiO2 and thereafter the mixture is press- molded while the excess tetrahalide is squeezed to the outside of a mold to obtain the porous molding. The molding is ground and the resultant powder having 0.5W3mm grain size is again press-molded. The generation of cracks in the stage of machining by a lathe, etc. is thus obviated and the porous quartz glass which permits working with good accuracy is obtd.
Inventors:
CHIBA KAZUO
WAKITA TORU
ORIMO KATSUMI
WAKITA TORU
ORIMO KATSUMI
Application Number:
JP20479785A
Publication Date:
March 25, 1987
Filing Date:
September 17, 1985
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD
International Classes:
C03B11/00; C03B19/06; C03B20/00; (IPC1-7): C03B11/00; C03B20/00