Global Patent Index - EP 0973623 A1

EP 0973623 A1 2000-01-26 - METHOD FOR THE MANUFACTURE OF CORES FOR METAL CASTING PROCESSES

Title (en)

METHOD FOR THE MANUFACTURE OF CORES FOR METAL CASTING PROCESSES

Title (de)

VERFAHREN ZUR HERSTELLUNG VON KERNEN FÜR GIESSVERFAHREN VON METALL

Title (fr)

PROCEDE DE FABRICATION DE NOYAUX DESTINES A DES PROCESSUS DE FONTE DE METAUX

Publication

EP 0973623 A1 (EN)

Application

EP 98903132 A

Priority

  • DE 19706472 A
  • GB 9800351 W

Abstract (en)

[origin: DE19706472C1] In a method for the manufacture of sand cores for metal casting processes by the urethane Cold Box Process gaseous trimethylamine is conducted through parts of a metering device (3) and then, in a concentration of from 0.01 to 0.12 wt.% based on the quantity of sand used per core into a core shooting machine (4) where it is brought into contact with the sand, and prior to the introduction of the gaseous trimethylamine into the core shooting machine (4) a purging gas is introduced, the relationship between the trimethylamine and the purging gas being such that for a quantity T of trimethylamine the quantity L of purging gas used is in the ratio of T:L of from 1:1000 to 1:10000.

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

B22C 9/12

IPC 8 full level (invention and additional information)

B22C 9/12 (2006.01)

CPC (invention and additional information)

B22C 9/123 (2013.01)

Citation (search report)

See references of WO 9836859A1

Designated contracting state (EPC)

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

EPO simple patent family

DE 19706472 C1 19980604; AR 005411 A1 19990623; AT 211954 T 20020215; AU 5996098 A 19980909; AU 733863 B2 20010531; BR 9807578 A 20000321; CA 2282309 A1 19980827; CN 1252020 A 20000503; EP 0973623 A1 20000126; EP 0973623 B1 20020116; JP 2001511710 A 20010814; KR 20000071196 A 20001125; TR 9902016 T2 19991221; TW 404865 B 20000911; WO 9836859 A1 19980827; ZA 9800938 B 19980807

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