Global Patent Index - EP 1259347 A1

EP 1259347 A1 2002-11-27 - HOLLOWS CASTING SYSTEMS AND METHODS

Title (en)

HOLLOWS CASTING SYSTEMS AND METHODS

Title (de)

VERFAHREN UND SYSTEME ZUM GIESSEN VON HOHLKÖRPERN

Title (fr)

SYSTEMES ET PROCEDES DE PRODUCTION DE PIECES DE FONTE EN CREUX

Publication

EP 1259347 A1 (EN)

Application

EP 00919899 A

Priority

  • US 0008483 W
  • US 51133900 A

Abstract (en)

[origin: WO0162418A1] Casting systems and methods form a hollows metal casting, in which the hollows metal casting comprises a fine-grain, homogeneous microstructure. The microstructure is essentially oxide- and sulfide-free, segregation defect free, and essentially free of voids caused by air entrapped during solidification of the metal from a liquidus state to a solid state. The casting system (3) with for forming hollows castings comprises an electroslag refining system; a nucleated casting system (2) in which a casting is solidified; and a cooled mandrel (205) disposed at least in a liquidus portion (148) of the casting (145) in the nucleated casting system. The liquidus portion of the metal casting is solidified around the cooled mandrel in a manner sufficient to form a hollows casting with microstructure that comprises a fine-grain, homogeneous microstructure that is essentially oxide- and sulfide-free, segregation defect free, and essentially free of voids caused by air entrapped during solidification from a liquidus state to a solid state.

IPC 1-7 (main, further and additional classification)

B22F 3/115; B22D 23/10; B22F 9/08

IPC 8 full level (invention and additional information)

F01D 25/00 (2006.01); B22D 1/00 (2006.01); B22D 7/04 (2006.01); B22D 23/00 (2006.01); B22D 23/10 (2006.01); B22D 25/02 (2006.01); B22D 27/04 (2006.01); B22F 3/115 (2006.01); C22B 9/18 (2006.01); C22B 9/193 (2006.01); C23C 4/12 (2006.01)

CPC (invention and additional information)

B22F 3/115 (2013.01); B22D 23/10 (2013.01); C22B 9/18 (2013.01); C23C 4/123 (2016.01); B22F 2009/0852 (2013.01); B22F 2009/0856 (2013.01); B22F 2998/00 (2013.01)

Combination set (CPC)

B22F 2998/00 + B22F 5/009

Citation (search report)

See references of WO 0162418A1

Designated contracting state (EPC)

CH DE FR GB IT LI

EPO simple patent family

WO 0162418 A1 20010830; EP 1259347 A1 20021127; JP 2003523828 A 20030812

INPADOC legal status


2006-09-20 [18R] REFUSED

- Effective date: 20060629

2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): CH DE FR GB IT LI

2003-04-02 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030214

2002-11-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020923

2002-11-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE