Global patent index - EP 1092491 A1

EP 1092491 A1 2001-04-18 - METHOD FOR SEPARATING GREEN SAND MOLD AND AS-CAST PRODUCT AND APPARATUS THEREFOR

Title (en)

METHOD FOR SEPARATING GREEN SAND MOLD AND AS-CAST PRODUCT AND APPARATUS THEREFOR

Title (de)

VERFAHREN UND VORRICHTUNG ZUM TRENNEN EINER GIESSFORM VON EINEM GUSSSTÜCK

Title (fr)

PROCEDE DE SEPARATION D'UN MOULE EN SABLE VERT D'UN PRODUIT BRUT DE COULEE ET APPAREIL ASSOCIE

Publication

EP 1092491 A1 (EN)

Application

EP 00913044 A

Priority

  • JP 0002101 W
  • JP 9460199 A
  • JP 23053099 A
  • JP 23276699 A
  • JP 25396899 A

Abstract (en)

An as-cast mold and a green-sand mold can be surely separated. Also, a green-sand mold can be surely broken. The green-sand mold that has been filled with a melted material and that does not have a flask is gas-tightly surrounded. The pressure in a structure gas-tightly surrounding the green-sand mold is reduced within a period of 0.5 second to a pressure of -200 mmHg or less and finally to a pressure of -360 mmHg or less, thereby reducing the boiling temperature of the water being present within the entire green-sand mold, including a condensed moisture layer formed around the as-cast product in the green-sand mold, to bring this water to a boil, so that the green-sand mold is broken and separated from the as-cast product, and to restore the original pressure of the structure to take out the as-cast product. <IMAGE>

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

B22D 29/00; B22C 5/00; B22D 29/04

IPC 8 full level (invention and additional information)

B22C 5/00 (2006.01); B22D 29/00 (2006.01)

CPC (invention and additional information)

B22C 5/00 (2013.01); B22D 29/00 (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

EPO simple patent family

EP 1092491 A1 20010418; EP 1092491 A4 20040811; WO 0059659 A1 20001012

INPADOC legal status

2005-05-04 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040916

2004-08-11 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20040630

2001-04-18 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001130

2001-04-18 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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