KR101715517B1 - 주편의 중심 편석 평가 방법 - Google Patents
주편의 중심 편석 평가 방법 Download PDFInfo
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- KR101715517B1 KR101715517B1 KR1020150146689A KR20150146689A KR101715517B1 KR 101715517 B1 KR101715517 B1 KR 101715517B1 KR 1020150146689 A KR1020150146689 A KR 1020150146689A KR 20150146689 A KR20150146689 A KR 20150146689A KR 101715517 B1 KR101715517 B1 KR 101715517B1
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- cast steel
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- 238000005204 segregation Methods 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000011156 evaluation Methods 0.000 claims abstract description 33
- 229910001208 Crucible steel Inorganic materials 0.000 claims abstract description 23
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 10
- 238000004445 quantitative analysis Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000010606 normalization Methods 0.000 claims description 6
- 238000004453 electron probe microanalysis Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/225—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material using electron or ion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/07—Investigating materials by wave or particle radiation secondary emission
- G01N2223/079—Investigating materials by wave or particle radiation secondary emission incident electron beam and measuring excited X-rays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/624—Specific applications or type of materials steel, castings
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
Description
도 2는 주편에 대한 성분 정량 분석의 초기 데이타(raw data)이다.
도 3 및 도 4는 수학식 1의 데이터 인덱스 n이 각각 1인 경우와 2인 경우에서의 표준화 변환 과정 개념을 도해하는 도면들이다.
도 5 내지 도 8은 수학식 1의 데이터 인덱스 n이 각각 0, 1, 2, 5 인 경우에서 표준화 변환 과정을 거친 이미지 맵이다.
Claims (5)
- 주편에 대한 성분 정량 분석 데이터를 확보하는 제 1 단계; 및
평가 영역의 편석 농도를, 상기 평가 영역과 인접하는 주위 영역의 편석 농도와 편석 분포를 반영하여, 표준화 변환하고, 표준화 변환된 편석 농도를 이용하여 상기 평가 영역 중 주변부의 편석을 배제하고 상기 주편 내 소정 지정 영역인 중심부의 편석을 평가하는 제 2 단계;를 포함하고,
상기 주위 영역은 상기 평가 영역을 둘러싸며,
상기 주위 영역은 상기 평가 영역과의 단위 거리가 n 이하인 영역(단, n은 양수)을 의미하고,
상기 주변부는 상기 중심부를 제외한 영역을 의미하는
주편의 중심 편석 평가 방법. - 제 1 항에 있어서,
상기 제 2 단계는 상기 주변부의 편석에 대하여 표준화 변환된 편석 농도의 최대값이 상기 주편의 평균 농도값의 소정 비율 보다 작을 때까지, 상기 n의 값을 변경하여 상기 주위 영역의 크기를 증가시킴으로써 편석 분포의 범위를 변경하여 표준화 변환을 계속 수행하는 단계를 포함하되,
상기 주편의 평균 농도값은 상기 주편 내 편석의 산술 평균값인
주편의 중심 편석 평가 방법. - 제 2 항에 있어서,
상기 소정 비율은 1.3인, 주편의 중심 편석 평가 방법. - 제 1 항에 있어서,
상기 제 2 단계는 상기 표준화 변환된 편석 농도를 이용하여 상기 중심부의 편석 지수를 도출하는 단계를 포함하는, 주편의 중심 편석 평가 방법.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111678937A (zh) * | 2020-05-21 | 2020-09-18 | 首钢集团有限公司 | 一种确定钢中微观偏析比取值范围的图像方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009236842A (ja) * | 2008-03-28 | 2009-10-15 | Jfe Steel Corp | 中心偏析評価方法 |
JP2010071872A (ja) * | 2008-09-19 | 2010-04-02 | Nippon Steel Corp | 鋳片の偏析分析方法 |
JP2013145221A (ja) * | 2011-12-13 | 2013-07-25 | Jfe Steel Corp | Hic割れ危険度が低い鋼材及びその中心偏析部評価法 |
JP2014020839A (ja) * | 2012-07-13 | 2014-02-03 | Jfe Steel Corp | 発光分光分析による偏析評価方法および偏析評価装置 |
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2015
- 2015-10-21 KR KR1020150146689A patent/KR101715517B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009236842A (ja) * | 2008-03-28 | 2009-10-15 | Jfe Steel Corp | 中心偏析評価方法 |
JP2010071872A (ja) * | 2008-09-19 | 2010-04-02 | Nippon Steel Corp | 鋳片の偏析分析方法 |
JP2013145221A (ja) * | 2011-12-13 | 2013-07-25 | Jfe Steel Corp | Hic割れ危険度が低い鋼材及びその中心偏析部評価法 |
JP2014020839A (ja) * | 2012-07-13 | 2014-02-03 | Jfe Steel Corp | 発光分光分析による偏析評価方法および偏析評価装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111678937A (zh) * | 2020-05-21 | 2020-09-18 | 首钢集团有限公司 | 一种确定钢中微观偏析比取值范围的图像方法 |
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