Global Patent Index - EP 1236525 A2

EP 1236525 A2 2002-09-04 - Casting mould

Title (en)

Casting mould

Title (de)

Giessform

Title (fr)

Moule de coulée

Publication

EP 1236525 A2 (DE)

Application

EP 01810203 A

Priority

  • EP 01810203 A
  • EP 01810152 A

Abstract (en)

Casting mold for metals has a mold cavity (10) formed by a conductive mold sections (2a, 2b). The surface of the cavity has a coating which is resistant to the effects of molten metal. This is less than 5 mm thick and is made from thermally-insulating, heat-shock-resistant material with a thermal conductivity below 1 W/mK. An Independent claim is included for a method for making the mold comprising: (a) applying a sol to the cavity surface, condensing to form a gel and drying to form the coating; or (b) gluing a sheet to the surface to form the coating.

Abstract (de)

Die Erfindung betrifft eine Giessform (1) mit einem Formhohlraum (10) und einem die Wärme abführenden und den Formhohlraum (10) ausbildenden Giessformkörper zum Giessen von Gussteilen aus Metall im Formgiessverfahren. Die Giessformr enthält an der den Formhohlraum (10) ausbildenden Oberfläche eine Beschichtung (20) in Form eines Schichtkörpers mit einer Dicke von weniger als 5 mm trägt, wobei der Schichtkörper aus einem skelettartig aufgebauten, hochporösen Festkörper aus einem wärmebeständigen Werkstoff mit einer Porösität von grösser als 50% und einer Wärmeleitfähigkeit k von k < 1 W/mK besteht. <IMAGE>

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

B22C 9/06; B22C 3/00; B22D 17/22

IPC 8 full level (invention and additional information)

B22C 3/00 (2006.01); B22C 9/06 (2006.01); B22C 23/02 (2006.01); B22D 17/22 (2006.01)

CPC (invention and additional information)

B22C 9/065 (2013.01); B22C 3/00 (2013.01); B22C 9/061 (2013.01); B22C 23/02 (2013.01); B22D 17/2209 (2013.01); C23C 18/1216 (2013.01); C23C 18/122 (2013.01); C23C 18/1254 (2013.01); C23C 18/127 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1236525 A2 20020904; EP 1236525 A3 20030702; WO 02064285 A2 20020822; WO 02064285 A3 20030912

INPADOC legal status


2004-04-29 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

2004-03-31 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030901

2004-03-24 [AKX] PAYMENT OF DESIGNATION FEES

2003-07-02 [AK] DESIGNATED CONTRACTING STATES:

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

2003-07-02 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL LT LV MK RO SI

2002-09-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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

2002-09-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI