METHOD FOR ANNEALING GLASS ARTICLE, AND METHOD FOR HEATING GLASS ARTICLE, METHOD FOR MANUFACTURING GLASS MOLDING, AND HEAT TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently heating glass, a method for annealing glass, a method for manufacturing a glass molding, and a heat treatment apparatus.;SOLUTION: In the method for annealing or heating a glass article, the glass article is annealed or heated by transporting the glass article sequentially inside a plurality of heat treatment chambers 13 each communicating with adjacent chambers through respective openings. In the method for manufacturing the glass molding, molten glass, or the like, is molded and the obtained glass molding is annealed by transporting the glass molding sequentially inside the plurality of the heat treatment chambers 13 through respective openings. In the method for manufacturing the glass article, the glass article is heated and softened by transporting the glass article sequentially inside the plurality of the heat treatment chambers through respective openings and molding the softened glass article. The adjacent heat treatment chambers are mutually heat insulated by heat insulating walls 14 and the atmospheric temperature of each chamber is independently set. The heat treatment apparatus 10 has a tunnel type furnace 11 and a transporting device for transporting the article along the inside of the furnace 11, and is used for heat treating the article introduced from the outside of the furnace while transporting the article through the inside of the furnace 11. The heat treatment apparatus 10 has the heat insulating walls 14 for partitioning the inside of the furnace 11 into the plurality of the heat treatment chambers 13 in the direction to transport the article so as not to disturb the transport of the article, and atmosphere temperature setting units.;COPYRIGHT: (C)2005,JPO&NCIPI