Title:
METHOD FOR MANUFACTURING LIGHT ALLOY WHEEL
Document Type and Number:
Japanese Patent JP2017042769
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a light alloy wheel in which casting defect such as a shrinkage cavity generated at an intersection part is further reduced.SOLUTION: A method for manufacturing a light alloy wheel having a rim part and a disk part which is provided within the rim part and onto which an axle is mounted comprises: a pouring process in which a molten metal 30 comprising a light alloy is charged into a cavity of a metal mold; and a compression process in which a part of the charged molten metal is compressed by a gas. In the compression process, the molten metal 30 is compressed by a gas 40 introduced through a vent hole 142 which communicates a cavity 26a for an intersection part which models an intersection part 26 formed by intersection of the rim part and the disk part out of the cavity and the exterior of the metal mold with each other, the molten metal is separated from an inner face of the cavity 26a for the intersection part thereby forming a clearance 100c between the inner face of the cavity 26a for the intersection part and the molten metal, and thereafter, compression is released, the molten metal around the clearance 100c is effused and charged into the clearance 100c through a molten metal coagulation layer 30a formed around the molten metal, and coagulation is completed.SELECTED DRAWING: Figure 3
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Inventors:
KONO TATSUYA
HARIMOTO TAKESHI
HARIMOTO TAKESHI
Application Number:
JP2015164517A
Publication Date:
March 02, 2017
Filing Date:
August 24, 2015
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
B22D18/04; B22C9/06; B22C9/28; B22D18/08; B60B3/02; B60B3/06
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