CENTRIFUGAL CASTING APPARATUS

• Main Author: TORIGOE TAKESHI
• Format: Patent
• Language: English
• Published: 17.10.1995
• Edition: 6
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

PURPOSE:To set an excess thickness in the inside necessary to remove the defect small and to reduce machining cost to remove inside by making the outer diameter at the center part of a cylindrical body of a mold for centrifugal casting larger than the outer diameter of both respective end parts of the cylindrical body so as to cause the defect on both end side parts while shifting a defective part from the center part to both end side parts. CONSTITUTION:The outer diameter at the center part of the cylindrical body 1 is set larger than the outer diameter at both end parts and the thickness at the center part of the cylindrical body 1 is made thicker than the thickness at both end side parts. Cooling rate of molten metal in the center part cooled by the center part of the cylindrical body 1 having thicker thickness is larger than the cooling rate of molten metal cooled by both end side parts of the cylindrical body 1. Therefore, the solidification of the molten metal at the center part is performed more quickly than the solidification at both end side parts, thereby the finally solidified part of the molten metal is shifted to both end side parts from the center part of the molten metal where the molten metal solidifys finally before. Consequently, only the cutting of both end parts is required to remove defective parts to reduce a machining cost.