Vibratory method for packing foundry sand into a pattern prior t

Details Vibratory method for packing foundry sand into a pattern prior t Vibratory method for packing foundry sand into a pattern prior t

1982-09-29

1984-06-19

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164 39, B22C 702, B22C 1510

Patent

active

044549067

ABSTRACT:
The invention relates to the casting of molten metal where a pattern embedded in sand is used to determine the shape into which the molten metal is formed. To ensure that the foundry sand fully penetrates all cavities and recesses of the pattern, the mold flask containing the pattern and sand is first vibrated at a frequency and stroke to produce accelerations in excess of the acceleration due to gravity to cause the sand to penetrate and completely fill all cavities, etc. in the pattern and then the accelerations are reduced to produce an acceleration less than the acceleration due to gravity to compact the sand in place.

REFERENCES:
patent: 3678989 (1972-07-01), Krzyzanowski

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