Global Patent Index - EP 0185540 A2

EP 0185540 A2 19860625 - Method of refining grains fo primary silicon in hypereutectic Al-Si alloys.

Title (en)

Method of refining grains fo primary silicon in hypereutectic Al-Si alloys.

Title (de)

Verfahren zur Kornfeinung des primären Siliziums in hypereutektischen Al-Si-Legierungen.

Title (fr)

Procédé pour l'affinage du grain de silicium primaire dans les alliages hypereutectiques Al-Si.

Publication

EP 0185540 A2 19860625 (EN)

Application

EP 85309176 A 19851217

Priority

  • JP 14966885 A 19850708
  • JP 26690384 A 19841218

Abstract (en)

A method of refining grains of primary silicon of a hypereutectic aluminium-silicon alloy which is cast into an ingot by introducing a melt of the alloy into a casting mold from a holding furnace which accommodates the melt. The method comprises adding a grain-refining agent containing phosphorus continuously to a flow of the melt from the holding furnace to the casting mold through a passage communicating with the furnace and the mold, and thereby refining the grains of the primary silicon upon solidification of the melt in the casting mold.

IPC 1-7

C22C 1/02; B22D 11/10

IPC 8 full level

B22D 11/11 (2006.01); C22C 1/02 (2006.01)

CPC (source: EP)

B22D 11/11 (2013.01); C22C 1/026 (2013.01)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0185540 A2 19860625; EP 0185540 A3 19870527

DOCDB simple family (application)

EP 85309176 A 19851217