Title:
固液共存状態金属材料の製造方法
Document Type and Number:
Japanese Patent JP3520991
Kind Code:
B1
Abstract:
A method for manufacturing a metallic material for rheocasting or thixoforming and a metallic material formed using the method are provided. The method includes: applying an electromagnetic field to a vessel and loading a molten metal into the vessel; and cooling the molten metal to form a metallic material for rheocasting or thixoforming. The entire volume of molten metal is rapidly and uniformly cooled throughout, from the wall toward the center of the vessel, without generating latent heat caused by the formation of solidification layers at the early stage of cooling. The molten metal in the vessel is cooled rapidly below its liquidus temperature within 1-10 seconds after the loading of the molten metal into the vessel, so that numerous uniform crystal nuclei are created throughout the entire volume of molten metal to form a metallic material having uniform, micro, spherical particles.
Inventors:
板村 正行
洪 俊杓
金 ▲ミン▼秀
金 宰民
洪 俊杓
金 ▲ミン▼秀
金 宰民
Application Number:
JP2003102904A
Publication Date:
April 19, 2004
Filing Date:
April 07, 2003
Export Citation:
Assignee:
洪 俊杓
International Classes:
B22D1/00; B22D11/00; B22D17/00; B22D27/02; B22D27/04; B22D27/20; C22C1/00; C22C21/02; (IPC1-7): B22D27/02; B22D1/00; B22D11/00; B22D27/04; B22D27/20
Attorney, Agent or Firm:
樺澤 襄 （外２名）