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Published byColeen Hood Modified over 9 years ago
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MAGNA M a g n a D i g i t e c h I n d i a P r i v a t e L i m i t e d REJECTION REDUCTION OLD METHOD Component Name: Bearing Housing Component weight: 20Kgs Number of Castings per Mold: 1nos. Total Good Casting wt : 20Kgs Total Pouring wt : 30.5kgs Yield : 65.5% REJECTION DESCRIPTION Component getting rejected at customer end after machining due to shrinkage problem
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MAGNA M a g n a D i g i t e c h I n d i a P r i v a t e L i m i t e d Picture shows Solidification at various intervals The colour scale shows the % of Liquid metal available
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MAGNA M a g n a D i g i t e c h I n d i a P r i v a t e L i m i t e d Picture shows Hotspot inside the Casting & Feeder Hotspot specifies the isolated regions and solidification time Hotspot inside the casting
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MAGNA M a g n a D i g i t e c h I n d i a P r i v a t e L i m i t e d Picture shows the possible Shrinkage area Shrinkage location This defect location exactly matches with customer complaint
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MAGNA M a g n a D i g i t e c h I n d i a P r i v a t e L i m i t e d Corrective Action Process changed to Furan Fast Loop Line from High Pressure Molding line Feeder position and neck size corrected. Number of Castings per Mold increased to 2 from 1 REJECTION REDUCTION
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MAGNA M a g n a D i g i t e c h I n d i a P r i v a t e L i m i t e d Picture shows Metal Filling at various intervals The colour scale shows the temperature at each location
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MAGNA M a g n a D i g i t e c h I n d i a P r i v a t e L i m i t e d Picture shows Solidification at various intervals The colour scale shows the % of Liquid metal available
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MAGNA M a g n a D i g i t e c h I n d i a P r i v a t e L i m i t e d Picture shows Hotspot inside the Casting & Feeder Hotspot specifies the isolated regions and solidification time
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MAGNA M a g n a D i g i t e c h I n d i a P r i v a t e L i m i t e d Finding after implementation of this method 1.Hotspot moved to feeder and there is no defect noticed inside the casting. 2.Yield also increased by 7%
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