Compacted graphite iron, engine cylinder head and vehicle

a graphite iron and engine technology, applied in the field of graphite iron, engine cylinder head and vehicle, can solve the problems of insufficient and achieve excellent tensile strength and thermo-mechanical fatigue li

Inactive Publication Date: 2014-06-12
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above composition is not enough to secure the appropriate tensile strength and thermo-mechanical fatigue life.

Method used

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  • Compacted graphite iron, engine cylinder head and vehicle

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Embodiment Construction

[0019]Hereinafter, the compacted graphite iron, the engine cylinder head and the vehicle according to preferable embodiments of the present invention now will be described in detail with reference to the accompanying drawings.

[0020]The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and / or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed it...

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Abstract

A compacted graphite iron having composition comprising: Fe as a major ingredient, C: of about 3.4˜4.2 wt %, Si: of about 1.5˜2.5 wt %, P: 0.10 wt % or less (not including 0), S: of about 0.10 wt % or less (not including 0), Cr: of about 0.10 wt % or less (not including 0), Mn: of about 0.1˜0.6 wt %, Cu: of about 0.2˜1.6 wt %, Sn: of about 0.1 wt % or less (not including 0), Mg: of about 0.05 wt % or less (not including 0), Mo: of about 0.05˜0.5 wt %, at least one ingredient of V: of about 0.05˜0.5 wt % and Ti: of about 0.05˜0.5 wt %, and other inevitable impurities; an engine cylinder head; and a vehicle.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims under 35 U.S.C. §119(a) the benefit of Korean Patent Application No. 10-2012-0144952 filed on Dec. 12, 2012 the entire contents of which are incorporated herein by reference.BACKGROUND[0002](a) Technical Field[0003]The present invention relates to a CGI (compacted graphite iron), which is suitable to be used to vehicle parts and the like such as engine cylinder heads, particularly to a compacted graphite iron having excellent tensile strength and thermo-mechanical fatigue life, an engine cylinder head formed with the compacted graphite iron, and a vehicle equipped with the engine cylinder head.[0004](b) Background Art[0005]Vehicle parts such as engine cylinder heads are required to have proper tensile strength and thermo-mechanical fatigue life to endure pressure and heat emitted by the engine while driving. Further, there is a need to satisfy demands for improving output and the like.[0006]Particularly, a cylinder ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C22C37/10C22C37/06
CPCC22C37/06C22C37/10
Inventor LEE, JEONG SEOPNAM, DUK HYUN
Owner HYUNDAI MOTOR CO LTD
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