KR100340468B1 - 구상흑연주철의 오스템퍼열처리방법 - Google Patents
구상흑연주철의 오스템퍼열처리방법 Download PDFInfo
- Publication number
- KR100340468B1 KR100340468B1 KR1020000051647A KR20000051647A KR100340468B1 KR 100340468 B1 KR100340468 B1 KR 100340468B1 KR 1020000051647 A KR1020000051647 A KR 1020000051647A KR 20000051647 A KR20000051647 A KR 20000051647A KR 100340468 B1 KR100340468 B1 KR 100340468B1
- Authority
- KR
- South Korea
- Prior art keywords
- workpiece
- core
- minutes
- salt bath
- graphite iron
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/44—Methods of heating in heat-treatment baths
- C21D1/46—Salt baths
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
구분 | 단위 | 비교예 1 | 실시예 1 |
표면조직 | 베이나이트 | 베이나이트 | |
심부조직 | 고온 퍼얼라이트 | 베이나이트 | |
표면경도 | HB | 277 ~ 293 | 286 ~ 293 |
심부경도 | HB | 320 ~ 340 | 277 ~ 293 |
표면인장강도 | ㎏ㆍf/㎟ | 95 ~ 100 | 95 ~ 100 |
심부인장강도 | ㎏ㆍf/㎟ | 100 ~ 120 | 95 ~ 105 |
표면신율 | % | 11 ~ 12 | 11 ~ 14 |
심부신율 | % | 2 ~ 3 | 8 ~ 10 |
표면충격치 | ㎏ㆍm/㎤ | 10 ~ 11 | 10 ~ 12 |
심부충격치 | ㎏ㆍm/㎤ | 2 ~ 3 | 9 ~ 10 |
Claims (1)
- 구상흑연주철을 오스템퍼 열처리하는 방법에 있어서, 구상흑연주철로 된 피가공물을 그 심부가 850∼950℃에 도달할 때까지 가열유지시킨 후에, 상기 피가공물을 200~300℃로 유지된 1차염욕에서 10초~5분간 침적하여 급냉시켜 피가공물 심부의 냉각경로가 퍼얼라이트석출영역을 비켜 지나도록 하고, 상기 피가공물을 300~450℃의 2차염욕에서 60분~90분간 침적시켜 항온변태시킨 다음, 상온으로 냉각시키는 과정을 포함하여 이루어져서, 피가공물의 심부가 표면조직과 동일한 베이나이트조직으로 변태되도록 하는 것을 특징으로 하는 구상흑연주철의 오스템퍼 열처리방법
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020000051647A KR100340468B1 (ko) | 2000-09-01 | 2000-09-01 | 구상흑연주철의 오스템퍼열처리방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020000051647A KR100340468B1 (ko) | 2000-09-01 | 2000-09-01 | 구상흑연주철의 오스템퍼열처리방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000072399A KR20000072399A (ko) | 2000-12-05 |
KR100340468B1 true KR100340468B1 (ko) | 2002-06-15 |
Family
ID=19686834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020000051647A KR100340468B1 (ko) | 2000-09-01 | 2000-09-01 | 구상흑연주철의 오스템퍼열처리방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100340468B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014145421A2 (en) * | 2013-03-15 | 2014-09-18 | Wayne State University | Development of nanostructure austempered ductile iron with dual phase microstructure |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100614937B1 (ko) * | 2002-12-26 | 2006-08-25 | (주)씨제이이엔지 | 오스템퍼링 열처리방법 |
KR100650153B1 (ko) * | 2005-06-10 | 2006-11-27 | 선철곤 | 오스템퍼링 경화 방법 |
CN103205544B (zh) * | 2013-04-17 | 2014-10-29 | 辽宁北方曲轴有限公司 | 一种盐浴自升温的球墨铸铁双级等温淬火方法及应用该方法制备的等温淬火球铁 |
KR101883290B1 (ko) * | 2017-05-10 | 2018-07-31 | 우경금속주식회사 | 오스템퍼드 구상흑연 주철의 제조방법 |
-
2000
- 2000-09-01 KR KR1020000051647A patent/KR100340468B1/ko active IP Right Grant
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014145421A2 (en) * | 2013-03-15 | 2014-09-18 | Wayne State University | Development of nanostructure austempered ductile iron with dual phase microstructure |
WO2014145421A3 (en) * | 2013-03-15 | 2014-11-06 | Wayne State University | Development of nanostructure austempered ductile iron with dual phase microstructure |
US10066278B2 (en) | 2013-03-15 | 2018-09-04 | Wayne State University | Development of nanostructure austempered ductile iron with dual phase microstructure |
Also Published As
Publication number | Publication date |
---|---|
KR20000072399A (ko) | 2000-12-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5876523A (en) | Method of producing spheroidal graphite cast iron article | |
SE542672C2 (en) | Method for producing an ausferritic steel austempered during continuous cooling followed by annealing | |
US4406711A (en) | Method for the production of homogeneous steel | |
JPH0461047B2 (ko) | ||
KR100340468B1 (ko) | 구상흑연주철의 오스템퍼열처리방법 | |
US6187118B1 (en) | Method for heat-treating steel work pieces | |
JPS62199718A (ja) | 機械構造用鋼の圧延材直接軟質化法 | |
JPH0313522A (ja) | 鋳鉄の熱処理方法 | |
KR0180748B1 (ko) | 고강도 고인성 스프링용 오일 템퍼 강선 재료의 연속 열처리 방법 | |
JPS58141331A (ja) | 鍛造製品の熱処理法 | |
KR101830542B1 (ko) | 신선가공성이 우수한 고강도 열처리 선재 및 그 제조방법 | |
JPS60187621A (ja) | 球状黒鉛鋳鉄の熱処理方法 | |
EP0018703A2 (en) | Camshaft manufacturing process | |
JPS5938325A (ja) | 耐ピッチング性に優れる鋳鉄部品の製造方法 | |
KR100268852B1 (ko) | 구상화 열처리성이 우수한 냉간압조용 선재의 제조방법 | |
US3826694A (en) | Thermal treatment of steel | |
JPS5842246B2 (ja) | 複合組織を有する高強度鋼帯の製造方法 | |
JPS6145686B2 (ko) | ||
KR100946068B1 (ko) | 고강도 과공석강 및 이를 이용한 과공석강 선재의 제조방법 | |
KR100530065B1 (ko) | 구상화 소둔 열처리 단축이 가능한 냉간압조용 강선재의제조방법 | |
KR19990056686A (ko) | 강의 침탄-오스템퍼링법 | |
KR940007275B1 (ko) | 열처리 생략형 고장력 볼트용 강선재의 제조방법 | |
KR102326245B1 (ko) | 냉간압조용 선재 및 이의 제조방법 | |
JPS59136423A (ja) | 球状化組織を有する棒鋼と線材の製造方法 | |
JPS6237690B2 (ko) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20130627 Year of fee payment: 12 |
|
FPAY | Annual fee payment |
Payment date: 20140530 Year of fee payment: 13 |
|
FPAY | Annual fee payment |
Payment date: 20150508 Year of fee payment: 14 |
|
FPAY | Annual fee payment |
Payment date: 20160524 Year of fee payment: 15 |
|
FPAY | Annual fee payment |
Payment date: 20170918 Year of fee payment: 16 |
|
FPAY | Annual fee payment |
Payment date: 20181031 Year of fee payment: 17 |
|
FPAY | Annual fee payment |
Payment date: 20190527 Year of fee payment: 18 |