Heat transfer during casting between metallic alloys and a relatively moving substrate
First Claim
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1. An apparatus for casting a continuous metal filament, comprising:
- (a) a reservoir for molten metal;
(b) a casting nozzle in fluid communication with the reservoir for dispensing molten metal therefrom;
(c) a chilled substrate, including a casting surface for receiving a puddle of molten metal dispensed from the nozzle, said substrate being movable relative to said nozzle to transport and solidify molten metal from the puddle to form an elongated filament; and
(d) means for applying ultrasonic vibrations to said chilled substrate beneath the puddle to subject the puddle to ultrasonic vibration prior to solidification whereby wetting of the substrate by the molten metal is enhanced for improved heat transfer between the molten metal and the substrate.
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Abstract
A casting assembly has a casting nozzle for dispensing a melt puddle upon a casting surface of a continuously moving chilled substrate. A vibratory support contacts the chilled substrate opposite the casting nozzle and includes an ultrasonic transducer for exciting the substrate. The support applies ultrasonic vibrations through the substrate to the melt puddle prior to the critical period of solidification for enhancing wetting of the substrate and improving heat transfer between the melt puddle and the chilled substrate.
42 Citations
11 Claims
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1. An apparatus for casting a continuous metal filament, comprising:
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(a) a reservoir for molten metal; (b) a casting nozzle in fluid communication with the reservoir for dispensing molten metal therefrom; (c) a chilled substrate, including a casting surface for receiving a puddle of molten metal dispensed from the nozzle, said substrate being movable relative to said nozzle to transport and solidify molten metal from the puddle to form an elongated filament; and (d) means for applying ultrasonic vibrations to said chilled substrate beneath the puddle to subject the puddle to ultrasonic vibration prior to solidification whereby wetting of the substrate by the molten metal is enhanced for improved heat transfer between the molten metal and the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of casting a continuous filament for improved heat transfer between the filament and a relatively moving chilled substrate, comprising:
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(a) effectuating relative movement between a casting nozzle and a chilled substrate positioned beneath the nozzle; (b) continuously dispensing molten metal through the nozzle to form a melt puddle on the relatively moving substrate; and (c) applying ultrasonic vibrations to the substrate directly beneath the melt puddle to subject the melt puddle to ultrasonic vibration prior to metal solidification. - View Dependent Claims (10, 11)
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Specification