PROBLEM TO BE SOLVED: To provide a manufacturing method of light alloy wheel capable of manufacturing light alloy wheel which allows casting defect such as shrinkage defect occurring on a rim part to be reduced and allows air leakage to be suppressed.SOLUTION: In a method for casting light alloy wheel, a mold 100 which has cavities 1006 by which a rim part is patterned, arranged so as to be divided into n pieces of intervals in a circumferential direction, includes n pieces of gates 19, 20 opened to the cavities and a plurality of cooling means 151 to 155 provided on outer circumference parts or inner circumference parts of the cavities over the circumferential direction and has a plurality of cooling means arranged on a part of interval, of n pieces of intervals of the cavities divided by the gates is used. A manufacturing method of the light alloy wheel has a process of actuating one cooling means 151 in the first place, of the plurality of cooling means contained in the interval, in the interval in which the plurality of cooling means are arranged, of n pieces of intervals of the cavities divided by the gates after a molten metal pouring process, thereafter, actuating the remaining cooling means and forcibly cooling the light alloy molten metal.SELECTED DRAWING: Figure 2
【課題】リム部に発生する引け巣などの鋳造欠陥を低減し、エア漏れが抑制された軽合金ホイールを製造できる軽合金ホイールの製造方法の提供。【解決手段】リム部が象られたキャビティ1006を周方向にn個の区間に区分するように配置し、キャビティに開口するn個の湯口19,20、キャビティの外周部又は内周部に周方向に亘って設けた複数の冷却手段151〜155を備え、湯口で区分したキャビティのn個の区間の内、一部の区間には、冷却手段が複数配置された金型100を使用して軽合金ホイールを鋳造する方法。注湯工程の後に、湯口により区分されたキャビティのn個の区間の内、冷却手段が複数配置された区間では、当該区間に含まれる複数の冷却手段の内、一の冷却手段151を最初に作動させ、その後、余の冷却手段を作動させ、軽合金溶湯を強制冷却する工程と、を有する軽合金ホイールの製造方法。【選択図】図2
MANUFACTURING METHOD OF LIGHT ALLOY WHEEL
軽合金ホイールの製造方法
2017-06-15
Patent
Electronic Resource
Japanese
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