Verfahren zur Ausbildung und Bainitisieren eines duktilen Gusseisen und dadurch hergestellter Gegenstand

Details

Veröffentlichungs-Nr.

EP2592162

Aktenzeichen

EP12192058

Anmeldetag

9. November 2012

Veröffentlichung

3. September 2014

Rechtsraum

EP

IPC

C21D1/20C21D5/00F03D11/02

Abstract

A method of making a ductile iron article is disclosed. The method includes providing a ductile iron article preform (112). The method also includes deforming (120) the ductile iron article preform (112) by hot-working (125) to provide a hot-worked portion (114) of the article (112). The method further includes cooling (130) the article (112) to an austempering temperature. Still further, the method includes austempering (150) the ductile iron article preform (112) for a predetermined time sufficient to provide an austempered article preform (118) comprising an austempered microstructure, wherein the austempered microstructure of the hot-worked portion (114) is different than in other portions of the article (112).

Anmelder

Firma

General Electric Company

Land

🇺🇸 USA

Fachgebiete