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특허 상세정보

Cooling roll, ribbon-shaped magnetic materials, magnetic powders and bonded magnets

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B23P-009/00    B22F-005/00   
미국특허분류(USC) 428/687; 428/608; 428/600; 148/302; 075/255; 252/062.54; 252/062.55
출원번호 US-0383305 (2003-03-07)
우선권정보 JP-0399876 (2000-12-28); JP-0110584 (2000-04-12)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Harness, Dickey &
인용정보 피인용 횟수 : 0  인용 특허 : 13
초록

Disclosed herein is a cooling roll which can provide bonded a magnet having excellent magnetic properties and having excellent reliability. A melt spinning apparatus 1 is provided with a tube 2 having a nozzle 3 at the bottom thereof, a coil 4 for heating the tube and a cooling roll 5 having a circumferential surface 53 in which gas expelling grooves 54 are formed. A melt spun ribbon 8 is formed by injecting the molten alloy 6 from the nozzle 6 so as to be collided with the circumferential surface 53 of the cooling roll 5, so that the molten alloy 6 is c...

대표
청구항

1. A ribbon-shaped magnetic material, which is manufactured by colliding a molten alloy to a circumferential surface of a cooling roll so as to cool and then solidify the molten alloy, comprising:a roll contact surface; and a free surface, the free surface being opposite the roll contact surface; wherein the roll contact surface is devoid of dimples; and the cooling roll has gas expelling means defined by at least one spiral-shaped groove with an average width of 0.5-90 μm provided in the circumferential surface of the cooling roll, the gas expelling mea...

이 특허에 인용된 특허 (13)

  1. Honeycutt ; III LeRoy (Salisbury NC). Apparatus for and process of direct casting of metal strip. USP1990084945974.
  2. Polk Donald E. (Morristown NJ) Bedell John R. (Sparta NJ). Apparatus for continuous casting metal filament on interior of chill roll. USP1976023939900.
  3. Bedell ; John R. ; Rothmayer ; Noel Y. ; Saunders ; Ralph R. ; Smith ; R obert W.. Chill roll casting of continuous filament. USP1978034077462.
  4. Bartlett Edwin S. (Worthington OH) Maringer Robert E. (Worthington OH) Rayment Judith J. (Columbus OH). Direct strip casting on grooved wheels. USP1989094865117.
  5. Arai, Akira; Kato, Hiroshi. Magnetic powder and bonded magnet. USP2003116648989.
  6. Hackman Lloyd E. (Worthington OH) Dickson James (Stirling NJ) Dunlap David L. (Gahanna OH) Handshey Mark E. (Columbus OH). Melt overflow system for producing filamentary and film products directly from molten materials. USP1990064930565.
  7. Hackman Lloyd E. (Worthington OH) Dickson James (Stirling NJ) Dunlap David L. (Gahanna OH) Handshey Mark E. (Columbus OH). Melt overflow system for producing filamentary and film products directly from molten materials. USP199009RE33327.
  8. Fukuno Akira,JPX ; Nakamura Hideki,JPX ; Yoneyama Tetsuhito,JPX. Method for preparing permanent magnet material, chill roll, permanent magnet material, and permanent magnet material po. USP1999115993939.
  9. Fukuno Akira (Chiba JPX) Nakamura Hideki (Narita JPX) Yoneyama Tetsuhito (Narashino JPX). Method for preparing permanent magnet material, chill roll, permanent magnet material, and permanent magnet material pow. USP1997095665177.
  10. Honeycutt ; III LeRoy (Salisbury NC) Key James C. (Salisbury NC) Moody ; III Herbert (Salisbury NC). Method of and apparatus for direct casting of metal strip. USP1990064934443.
  11. Gaspar Thomas A. (Columbus OH). Textured substrate and method for the direct, continuous casting of metal sheet exhibiting improved uniformity. USP1987114705095.
  12. Yukumoto Masao (Chiba JPX) Ozawa Michiharu (Chiba JPX) Yamane Hiroshi (Chiba JPX). Twin cooling roll apparatus for producing rapidly solidified metal strip. USP1991045010947.
  13. Hackman Lloyd E. (Worthington OH). Two wheel melt overflow process and apparatus. USP1990024903751.