강판 및 그 제조 방법
본 발명의 일 양태에 관한 강판은, 화학 성분이 소정 범위 내이고, 판 두께 중심부에 있어서, 마르텐사이트 및 베이나이트의 합계 면적률이 99％ 이상이고, 상기 판 두께 중심부에 있어서, 구 오스테나이트 입경의 평균값이 80㎛ 미만이고, Ceq가 0.750 내지 0.800％이고, Al×N이 2.0×10이상이고, Ti/N이 3.4 이하이고, 4×f/g≥9.00을 만족시키고, 상기 판 두께 중심부에 있어서의 -20℃에서의 C 방향 샤르피의 3점 평균이 47J 이상이고, 표층 및 상기 판 두께 중심부의 경도가 HB로 350 이상이고, 판...
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| creator | FURUYA HITOSHI KAWABATA NORIMASA TAKAMINE FUMITOSHI MIYAKE TAKUMI |
| description | 본 발명의 일 양태에 관한 강판은, 화학 성분이 소정 범위 내이고, 판 두께 중심부에 있어서, 마르텐사이트 및 베이나이트의 합계 면적률이 99％ 이상이고, 상기 판 두께 중심부에 있어서, 구 오스테나이트 입경의 평균값이 80㎛ 미만이고, Ceq가 0.750 내지 0.800％이고, Al×N이 2.0×10이상이고, Ti/N이 3.4 이하이고, 4×f/g≥9.00을 만족시키고, 상기 판 두께 중심부에 있어서의 -20℃에서의 C 방향 샤르피의 3점 평균이 47J 이상이고, 표층 및 상기 판 두께 중심부의 경도가 HB로 350 이상이고, 판 두께가 200mm 초과이다.
A steel plate according to an aspect of the present invention has a chemical composition within a predetermined range, in which a total area ratio of martensite and bainite in a thickness middle portion is 99% or more, an average value of a prior austenite grain size in the thickness middle portion is less than 80 µm, Ceq is 0.750% to 0.800%, Al × N is 2.0 × 10-4or more, Ti/N is 3.4 or less, 4 × f/g ≥ 9.00 is satisfied, a three-point average of C-direction Charpy at -20°C in the thickness middle portion is 47 J or more, hardnesses of a surface layer and the thickness middle portion are 350 or more by HB, and a plate thickness is more than 200 mm. |
| format | Patent |
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A steel plate according to an aspect of the present invention has a chemical composition within a predetermined range, in which a total area ratio of martensite and bainite in a thickness middle portion is 99% or more, an average value of a prior austenite grain size in the thickness middle portion is less than 80 µm, Ceq is 0.750% to 0.800%, Al × N is 2.0 × 10-4or more, Ti/N is 3.4 or less, 4 × f/g ≥ 9.00 is satisfied, a three-point average of C-direction Charpy at -20°C in the thickness middle portion is 47 J or more, hardnesses of a surface layer and the thickness middle portion are 350 or more by HB, and a plate thickness is more than 200 mm.</description><language>kor</language><subject>ALLOYS ; CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200303&DB=EPODOC&CC=KR&NR=20200022387A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200303&DB=EPODOC&CC=KR&NR=20200022387A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FURUYA HITOSHI</creatorcontrib><creatorcontrib>KAWABATA NORIMASA</creatorcontrib><creatorcontrib>TAKAMINE FUMITOSHI</creatorcontrib><creatorcontrib>MIYAKE TAKUMI</creatorcontrib><title>강판 및 그 제조 방법</title><description>본 발명의 일 양태에 관한 강판은, 화학 성분이 소정 범위 내이고, 판 두께 중심부에 있어서, 마르텐사이트 및 베이나이트의 합계 면적률이 99％ 이상이고, 상기 판 두께 중심부에 있어서, 구 오스테나이트 입경의 평균값이 80㎛ 미만이고, Ceq가 0.750 내지 0.800％이고, Al×N이 2.0×10이상이고, Ti/N이 3.4 이하이고, 4×f/g≥9.00을 만족시키고, 상기 판 두께 중심부에 있어서의 -20℃에서의 C 방향 샤르피의 3점 평균이 47J 이상이고, 표층 및 상기 판 두께 중심부의 경도가 HB로 350 이상이고, 판 두께가 200mm 초과이다.
A steel plate according to an aspect of the present invention has a chemical composition within a predetermined range, in which a total area ratio of martensite and bainite in a thickness middle portion is 99% or more, an average value of a prior austenite grain size in the thickness middle portion is less than 80 µm, Ceq is 0.750% to 0.800%, Al × N is 2.0 × 10-4or more, Ti/N is 3.4 or less, 4 × f/g ≥ 9.00 is satisfied, a three-point average of C-direction Charpy at -20°C in the thickness middle portion is 47 J or more, hardnesses of a surface layer and the thickness middle portion are 350 or more by HB, and a plate thickness is more than 200 mm.</description><subject>ALLOYS</subject><subject>CHEMISTRY</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</subject><subject>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJB5tWHq254JCq839Cu82r5D4c2COW8WbgByV77eNJWHgTUtMac4lRdKczMou7mGOHvophbkx6cWFyQmp-allsR7BxkZGBkYGBgZGVuYOxoTpwoAOd4r6Q</recordid><startdate>20200303</startdate><enddate>20200303</enddate><creator>FURUYA HITOSHI</creator><creator>KAWABATA NORIMASA</creator><creator>TAKAMINE FUMITOSHI</creator><creator>MIYAKE TAKUMI</creator><scope>EVB</scope></search><sort><creationdate>20200303</creationdate><title>강판 및 그 제조 방법</title><author>FURUYA HITOSHI ; KAWABATA NORIMASA ; TAKAMINE FUMITOSHI ; MIYAKE TAKUMI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_KR20200022387A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>kor</language><creationdate>2020</creationdate><topic>ALLOYS</topic><topic>CHEMISTRY</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</topic><topic>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>FURUYA HITOSHI</creatorcontrib><creatorcontrib>KAWABATA NORIMASA</creatorcontrib><creatorcontrib>TAKAMINE FUMITOSHI</creatorcontrib><creatorcontrib>MIYAKE TAKUMI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>FURUYA HITOSHI</au><au>KAWABATA NORIMASA</au><au>TAKAMINE FUMITOSHI</au><au>MIYAKE TAKUMI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>강판 및 그 제조 방법</title><date>2020-03-03</date><risdate>2020</risdate><abstract>본 발명의 일 양태에 관한 강판은, 화학 성분이 소정 범위 내이고, 판 두께 중심부에 있어서, 마르텐사이트 및 베이나이트의 합계 면적률이 99％ 이상이고, 상기 판 두께 중심부에 있어서, 구 오스테나이트 입경의 평균값이 80㎛ 미만이고, Ceq가 0.750 내지 0.800％이고, Al×N이 2.0×10이상이고, Ti/N이 3.4 이하이고, 4×f/g≥9.00을 만족시키고, 상기 판 두께 중심부에 있어서의 -20℃에서의 C 방향 샤르피의 3점 평균이 47J 이상이고, 표층 및 상기 판 두께 중심부의 경도가 HB로 350 이상이고, 판 두께가 200mm 초과이다.
A steel plate according to an aspect of the present invention has a chemical composition within a predetermined range, in which a total area ratio of martensite and bainite in a thickness middle portion is 99% or more, an average value of a prior austenite grain size in the thickness middle portion is less than 80 µm, Ceq is 0.750% to 0.800%, Al × N is 2.0 × 10-4or more, Ti/N is 3.4 or less, 4 × f/g ≥ 9.00 is satisfied, a three-point average of C-direction Charpy at -20°C in the thickness middle portion is 47 J or more, hardnesses of a surface layer and the thickness middle portion are 350 or more by HB, and a plate thickness is more than 200 mm.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | 강판 및 그 제조 방법 |
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