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Grain refining with direct vibrational coupling

Inactive Publication Date: 2021-03-04
SOUTHWIRE CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The patent describes a molten metal conveyor that has a receptor plate in contact with molten metal during transport. The conveyor has at least one vibrational energy source that supplies vibrational energy directly to the receptor plate in contact with molten metal. This invention can be used to form metal products by cooling the molten metal and controlling its flow through a cooling passage in the conveyor. The technical effect of this invention is to improve the quality and consistency of metal products by controlling the flow of molten metal and using vibrational energy to create a smoother surface.

Problems solved by technology

(the entire contents of which are incorporated herein by reference) shows that there has been a long recognized problem with casting of “pure” metal products.

Method used

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  • Grain refining with direct vibrational coupling
  • Grain refining with direct vibrational coupling
  • Grain refining with direct vibrational coupling

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Embodiment Construction

[0052]Grain refining of metals and alloys is important for many reasons, including maximizing ingot casting rate, improving resistance to hot tearing, minimizing elemental segregation, enhancing mechanical properties, particularly ductility, improving the finishing characteristics of wrought products and increasing the mold filling characteristics, and decreasing the porosity of foundry alloys. Usually grain refining is one of the first processing steps for the production of metal and alloy products, especially aluminum alloys and magnesium alloys, which are two of the lightweight materials used increasingly in the aerospace, defense, automotive, construction, and packaging industry. Grain refining is also an important processing step for making metals and alloys castable by eliminating columnar grains and forming equiaxed grains.

[0053]Grain refining is a solidification processing step by which the crystal size of the solid phases is reduced by either chemical, physical, or mechanic...

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Abstract

A molten metal conveyor having a receptor plate in contact with molten metal during transport of the molten metal. The receptor plate extends from an entrance where molten metal enters onto the receptor plate to an exit where molten metal exits the receptor plate. The molten metal conveyor has at least one vibrational energy source which supplies vibrational energy directly to the receptor plate in contact with molten metal. A corresponding method for forming a metal product includes providing molten metal onto a molten conveyor; cooling the molten metal by control of a cooling medium flowing through a cooling passage in the or attached to the conveyor; and coupling vibrational energy directly into a receptor plate in contact with the molten metal on the conveyor.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. Ser. No. 62 / 468,709 (the entire contents of which are incorporated herein by reference), filed Mar. 8, 2017, entitled Grain Refining with Direct Vibrational Coupling.[0002]This application is related to U.S. Ser. No. 62 / 372,592 (the entire contents of which are incorporated herein by reference) filed August 9, 2016, entitled ULTRASONIC GRAIN REFINING AND DEGASSING PROCEDURES AND SYSTEMS FOR METAL CASTING. This application is related to U.S. Ser. No. 62 / 295,333 (the entire contents of which are incorporated herein by reference) filed Feb. 15, 2016, entitled ULTRASONIC GRAIN REFINING AND DEGASSING FOR METAL CASTING. This application is related to U.S. Ser. No. 62 / 267,507 (the entire contents of which are incorporated herein by reference) filed Dec. 15, 2015, entitled ULTRASONIC GRAIN REFINING AND DEGASSING OF MOLTEN METAL. This application is related to U.S. Ser. No. 62 / 113,882 (the entire contents o...

Claims

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Application Information

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IPC IPC(8): B22D11/115B22D11/00
CPCB22D11/115B22D11/003B22D11/10B22D11/114B22D27/08
Inventor GILL, KEVIN SCOTTPOWELLRUNDQUIST, VICTOR FREDERICMANCHIRAJU, VENKATA KIRANGUFFEY, ROLAND EARL
Owner SOUTHWIRE CO LLC