PRODUCTION OF METAL BASE COMPOSITE MATERIAL - TOYOTA JIDOSHA KABUSHIKI KAISHA

Title:

PRODUCTION OF METAL BASE COMPOSITE MATERIAL

Document Type and Number:

Japanese Patent JP3421535

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To prevent precipitation and segregation while uniformly dispersing the grains in a matrix by adding a second phase grains into a first phase matrix composed of metal or alloy and executing electromagnetic stirring while impressing ultrasonic vibration to molten metal.
SOLUTION: In this apparatus, the vibration generated with the ultrasonic vibration element 1 is transmitted to the molten metal 6 in a crucible 5 through a ultrasonic horn 2. An electromagnetic stirring device containing an electromagnetic coil 3 surrounding the crucible 5, is arranged. Rotating movement is given to the molten metal 6 by the electromagnetic stirring. The second phase grains (e.g. reinforced grains, such as ceramic grains) are supplied on the molten metal 6 after passing a preheating furnace with carrier gas. Then, while impressing the ultrasonic vibration to the molten metal or alloy 6 added by the second phase grains with an ultrasonic vibrator 1 and the ultrasonic horn 2, the electromagnetic stirring is executed by using the electromagnetic coil 3. By this method, the metal base composite material can be produced by casting method.

Inventors:

Yoshikazu Gemma
Yoshiki Tsunekawa
Masahiro Okumiya
Naotake Mohri

Application Number:

JP12279097A

Publication Date:

June 30, 2003

Filing Date:

April 28, 1997

Export Citation:

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