| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for firing an earthenware enabling unprecedented Yo-hen (discoloration of ceramic ware) to emerge in a short time. SOLUTION: This method for firing earthenware comprises the steps of forming a firing space 18 surrounded by a sagger 16 comprising a refractory material on a work loading floor 14 in a firing furnace 12, forming a charcoal bed layer 20 by spreading charcoal inside the space of the work loading floor 14, further arranging a shell layer 24 by heaping up oyster shells 22 around a biscuit ware work 10 on the charcoal bed layer 20, heating in this condition up to 900°C in 4 hours under oxidative atmosphere, then up to 1,250°C in 3 hours and 40 minutes under reducing atmosphere, and slowly cooling down to 1,150°C in 30 minutes, keeping this condition for about one hour, and stopping heating. COPYRIGHT: (C)2007,JPO&INPIT
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