Global Patent Index - EP 1056561 A1

EP 1056561 A1 20001206 - METHOD FOR PROTECTING A NON-FERROUS LIQUID METAL FROM OXIDATION

Title (en)

METHOD FOR PROTECTING A NON-FERROUS LIQUID METAL FROM OXIDATION

Title (de)

VERFAHREN ZUM SCHÜTZEN FLÜSSIGER NICHTEISENMETALLE VOR OXYDATION

Title (fr)

PROCEDE POUR PROTEGER DE L'OXYDATION UN METAL LIQUIDE NON FERREUX

Publication

EP 1056561 A1 20001206 (FR)

Application

EP 99936045 A 19990226

Priority

  • FR 9900434 W 19990226
  • FR 9802315 A 19980226

Abstract (en)

[origin: US6500230B1] The invention relates to a process for protecting a non-ferrous liquid metal from oxidation and from firing in a machine processing this metal or its alloys, consisting of disposing a gaseous mixture containing carbon dioxide at the surface of the non-ferrous metal. According to this process, the gaseous mixture is prepared by adding to the carbon dioxide an oxidising gas, argon and xenon only, this gaseous mixture having properties ensuring protection from the ambient atmosphere, and the proportion of carbon dioxide in this gaseous mixture ranging from 50% to 90% by volume.

IPC 1-7

B22D 21/04

IPC 8 full level

B22D 21/00 (2006.01); B22D 27/00 (2006.01)

CPC (source: EP US)

B22D 21/007 (2013.01 - EP US); B22D 27/003 (2013.01 - EP US)

Citation (search report)

See references of WO 9943458A1

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

US 6500230 B1 20021231; AU 3256699 A 19990915; AU 756719 B2 20030123; CA 2321901 A1 19990902; DE 69900499 D1 20020110; EP 1056561 A1 20001206; EP 1056561 B1 20011128; FR 2775209 A1 19990827; FR 2775209 B1 20000505; IL 137903 A0 20011031; NO 20004270 D0 20000825; NO 20004270 L 20000927; WO 9943458 A1 19990902

DOCDB simple family (application)

US 62277900 A 20001003; AU 3256699 A 19990226; CA 2321901 A 19990226; DE 69900499 T 19990226; EP 99936045 A 19990226; FR 9802315 A 19980226; FR 9900434 W 19990226; IL 13790399 A 19990226; NO 20004270 A 20000825