Patent ID: 6415630
Filing Date: 2002-07-09
Classification: C03B

Abstract:
A method for producing a homogeneous streak-free quartz glass plate comprising the steps of:lowering a solid quartz glass rod parallel to a longitudinal axis Zâ€”Z of the quartz glass rod into a melting pot wherein a cross section of the melting pot is larger than a cross section of the quartz glass rod and a contour of the melting pot determines a contour of the quartz glass plate; heating the quartz glass rod to a flow temperature of the quartz glass rod in the melting pot and continuing heating of the quartz glass rod during lowering while the quartz glass rod is melted off until a level of quartz glass flowing in the melting pot corresponds to a desired thickness of the quartz glass plate; and conducting relative movement between the quartz glass rod and the melting pot in a direction transverse to the longitudinal axis Zâ€”Z, during forming of the quartz glass plate.