KR970065735A - Highly Ductile Ductile Iron and its Manufacturing Method - Google Patents

Highly Ductile Ductile Iron and its Manufacturing Method Download PDF

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Publication number
KR970065735A
KR970065735A KR1019960009192A KR19960009192A KR970065735A KR 970065735 A KR970065735 A KR 970065735A KR 1019960009192 A KR1019960009192 A KR 1019960009192A KR 19960009192 A KR19960009192 A KR 19960009192A KR 970065735 A KR970065735 A KR 970065735A
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KR
South Korea
Prior art keywords
cast iron
ductile
graphite cast
manufacturing
spheroidal graphite
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Application number
KR1019960009192A
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Korean (ko)
Inventor
오세일
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김무
삼성중공업 주식회사
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Application filed by 김무, 삼성중공업 주식회사 filed Critical 김무
Priority to KR1019960009192A priority Critical patent/KR970065735A/en
Publication of KR970065735A publication Critical patent/KR970065735A/en

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  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

본 발명은 고인성 구상 흑연주철과 그 제조방법에 관한 것으로서, 특히 주철에 Mg, Fe등을 첨가하여 흑연을 구의 형태로 고립되게 석출시킨 구상흑연주철에 있어서, 상기 구상흑연주철의 기지조직중 페라이트 분율이 20%이상 존재하고, 퍼얼라이트의 평균입경이 300㎛이하인 것을 특징으로 하는 고인성 구상흑연주철에 관한 것이다.The present invention relates to a high-strength spheroidal graphite cast iron and a method for producing the same, and more particularly, to a spheroid graphite cast iron in which Mg and Fe are added to cast iron so that graphite is isolated in spherical form, And the average particle size of the pearlite is 300 탆 or less.

Description

고인성 구상흑연주철과 그 제조방법Highly Ductile Ductile Iron and its Manufacturing Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제3도는 열처리 온도와 페라이트 분율과의 관계를 나타내는 그래프, 제4도는 열처리 온도와 브리넬 경도와의 관계를 나타내는 그래프이다.FIG. 3 is a graph showing the relationship between the heat treatment temperature and the ferrite fraction, and FIG. 4 is a graph showing the relationship between the heat treatment temperature and the Brinell hardness.

Claims (4)

주철에 Mg, Fe등을 첨가하여 흑연을 구의 형태로 고립되게 석출시킨 구상흑연주철에 있어서, 상기 구상 흑연주철의 기지조직중 페라이트 분율이 20% 이상 존재하고, 퍼얼라이트의 평균입경이 300㎛이하인 것을 특징으로 하는 고인성 구상흑연주철.A spheroidal graphite cast iron in which graphite is precipitated in a spherical shape by adding Mg and Fe to the cast iron, wherein the spheroid graphite cast iron has a ferrite fraction of 20% or more and an average particle size of pearlite of 300 m or less ≪ / RTI > 제1항에 있어서, 상기 페라이트 분율이 34% 존재하는 것을 특징으로 하는 고인성 구상흑연주철.The high-strength spheroidal graphite cast iron according to claim 1, wherein the ferrite fraction is present at 34%. 주철에 Mg,Fe등을 첨가하여 흑연을 구의 형태로 고립되게 석출시키는 구상흑연주철의 제조방법에 있어서, 상기 구상흑연주철을 760∼890℃의 온도범위에서 노멀라이징을 실시하여 제조됨을 특징으로 하는 구상흑연 주철의 제조방법.A process for producing spheroidal graphite cast iron in which graphite is precipitated in a spherical form by adding Mg and Fe to the cast iron, wherein the spheroidal graphite cast iron is normalized in a temperature range of 760 to 890 캜. Method of manufacturing graphite cast iron. 제3항에 있어서, 상기 온도범위가 830℃인 것을 특징으로 하는 고인성 구상흑연주철의 제조방법.4. The method of manufacturing a high-strength spheroidal graphite cast iron according to claim 3, wherein the temperature range is 830 deg. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960009192A 1996-03-29 1996-03-29 Highly Ductile Ductile Iron and its Manufacturing Method KR970065735A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960009192A KR970065735A (en) 1996-03-29 1996-03-29 Highly Ductile Ductile Iron and its Manufacturing Method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960009192A KR970065735A (en) 1996-03-29 1996-03-29 Highly Ductile Ductile Iron and its Manufacturing Method

Publications (1)

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KR970065735A true KR970065735A (en) 1997-10-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100325125B1 (en) * 1998-12-29 2002-06-28 신현준 Heat-resistant spheroidal graphite cast iron and its heat treatment method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100325125B1 (en) * 1998-12-29 2002-06-28 신현준 Heat-resistant spheroidal graphite cast iron and its heat treatment method

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