A manufacturing method of a Austempa spheroidal-graphite-cast-iron article

Title:

A manufacturing method of a Austempa spheroidal-graphite-cast-iron article

Document Type and Number:

Japanese Patent JP6205126

Kind Code:

B2

Abstract:

A method of making an austempered ductile iron article is disclosed. The method includes providing (110) a melt of a ductile iron alloy composition. The method also includes casting (120) the melt into a mold to form a casting. The method further includes cooling the (130) casting to an austempering temperature by circulating a coolant through the mold; wherein cooling comprises solidifying the melt and forming a ductile iron article. Still further, the method includes heating (140) the casting to maintain the austempering temperature for an interval sufficient to form an austempered ductile iron article that comprises a microstructure comprising ausferrite.

Inventors:

Chun Young Park
Jason Robert Parolini

Application Number:

JP2012271854A

Publication Date:

September 27, 2017

Filing Date:

December 13, 2012

Export Citation:

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