EP 0032282 A1 19810722 - Process for manufacture of cast iron with vermicular graphite and cast iron so produced.
Title (en)
Process for manufacture of cast iron with vermicular graphite and cast iron so produced.
Title (de)
Verfahren zur Herstellung von Gusseisen mit Vermicular-Graphit und nach diesem Verfahren hergestelltes Gusseisen.
Title (fr)
Procédé de fabrication de fonte à graphite vermiculaire et fonte ainsi obtenue.
Publication
Application
Priority
EP 80300136 A 19800115
Abstract (en)
A process for the production of cast iron with vermicular graphite in which molten grey cast iron is introduced in the mould cavity of a conventional pouring system which pouring system additionally includes one or more intermediate chambers containing a vermicularizing agent in an amount sufficient to convert the graphite at least in part to vermicular graphite. A nodular graphite inhibitor may be added to the molten grey cast iron before it is introduced in the mould cavity. By a particular selection of process parameters the amount of vermicularizing agent in the resulting cast iron may be closely controlled. The pouring system is known for the production of cast iron with nodular graphite but not the the production of iron with vermicular graphite. A pouring system is shown in the drawing and includes a downsprue (1), an intermediate chamber (2) which contains the vermicularizing agent, a gate (3), a runner bar and an ingate (5).
IPC 1-7
IPC 8 full level
C21C 1/10 (2006.01)
CPC (source: EP)
C21C 1/10 (2013.01)
Citation (search report)
- GB 1069058 A 19670517 - INT NICKEL LTD
- DE 2705630 A1 19770811 - BCIRA CO
- GB 1427445 A 19760310 - BRITISH CAST IRON RES ASS
- GB 1511246 A 19780517 - MATERIALS & METHODS LTD
- GB 1278265 A 19720621 - MATERIALS & METHODS LTD
- GIESSEREI, Vol. 66, No. 15, 23 July 1979, Dusseldorf, * Page 590, right column, lines 30 to 60 *
- GIESSEREI-PRAXIS, No. 23-24, 1979 Berlin J.B. v. NESSELRODE "Gusseisen mit Vermiculargraphit, ein Werkstoff fur Zylinderkopfe" pages 445 to 449 * page 446 *
Designated contracting state (EPC)
AT BE CH DE FR IT LU NL SE
DOCDB simple family (publication)
EP 0032282 A1 19810722; EP 0032282 B1 19850724; AT E14455 T1 19850815; DE 3070892 D1 19850829
DOCDB simple family (application)
EP 80300136 A 19800115; AT 80300136 T 19800115; DE 3070892 T 19800115