Metal founding – Process – With measuring – testing – inspecting – or condition determination
Patent
1979-07-09
1981-06-16
Baldwin, Robert D.
Metal founding
Process
With measuring, testing, inspecting, or condition determination
164154, 164 49, 367 95, 367908, B22D 200, B22D 4600
Patent
active
042731780
ABSTRACT:
Flow of viscous molten metal (12) to thin sections (48) of mold cavities (14) is difficult to attain thus resulting in inferior molded products. This problem is solved herein by generating waves (20) in the molten metal (12), sensing the waves (20) in the molten metal (12) at a thin section (48) of the mold cavity (14) spaced from the generating position of the waves (20), and controlling the generating responsive to the waves (20) sensed. Basically, a control circuit (56) increases the amplitude, and/or changes the frequency, of the waves (20) generated, if the waves (20) sensed are not sufficiently strong. The invention is useful for flowing other liquids besides molten metal in other cavities than in molds, although this is its prime contemplated use.
REFERENCES:
patent: 2753542 (1956-07-01), Rod et al.
patent: 3079596 (1963-02-01), Atkinson
patent: 3115615 (1963-12-01), Saper
patent: 3985030 (1976-10-01), Charlton
patent: 4000650 (1977-01-01), Snyder
Baldwin Robert D.
Caterpillar Tractor Co.
Lin K. Y.
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