JP2020537047A5 - - Google Patents
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- JP2020537047A5 JP2020537047A5 JP2020520658A JP2020520658A JP2020537047A5 JP 2020537047 A5 JP2020537047 A5 JP 2020537047A5 JP 2020520658 A JP2020520658 A JP 2020520658A JP 2020520658 A JP2020520658 A JP 2020520658A JP 2020537047 A5 JP2020537047 A5 JP 2020537047A5
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- deformation aging
- toughness
- deterioration
- suppress
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- 230000032683 aging Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
Description
Ｎ：０．００２〜０．００８％
Ｎは、Ｃとともに変形時効を起こす主な元素であって、できる限り低く維持することが好ましい。Ｎによる変形時効衝撃特性の低下を低減するためには、Ａｌ、Ｔｉ、Ｎｂなどを適切に含ませる必要がある。但し、Ｎの含有量が高すぎると、変形時効の効果を抑制することが難しくなるため、上記Ｎの含有量は０．００８％以下で含まれることが好ましい。これに対し、Ｎの含有量が０．００２％未満の場合には、変形時効衝撃特性の劣化を抑制するために添加された元素が固溶された状態で固溶強化を起こしたり、又は他の析出物を形成させて、母材及び溶接部の靭性を低下させる。したがって、上記Ｎの含有量は、０．００２〜０．００８％の範囲を有することが好ましい。
N: 0.002 to 0.008%
N is a main element that causes deformation aging together with C, and is preferably kept as low as possible. In order to reduce the deterioration of the deformation aging impact characteristic due to N, it is necessary to appropriately include Al, Ti, Nb and the like. However, if the N content is too high, it becomes difficult to suppress the effect of deformation aging. Therefore, the N content is preferably 0.008% or less. On the other hand, when the content of N is less than 0.002%, the solid solution is strengthened in the state where the element added in order to suppress the deterioration of the deformation aging impact property is dissolved, or other Precipitate is formed to reduce the toughness of the base metal and the welded portion. Therefore, the content of N is preferably in the range of 0.002 to 0.008%.
以下、本発明の厚鋼板の製造方法について説明する。
先ず、上述した合金組成を有する鋼スラブを１０２０〜１１５０℃で再加熱する。上記再加熱温度が１１５０℃を超えると、オーステナイトの結晶粒が粗大化し、靭性を低下させる虞がある。これに対し、１０２０℃未満の場合には、ＴｉやＮｂなどが十分に固溶しない場合が発生し、強度の低下を招くことがある。
Hereinafter, a method for producing a thick steel plate of the present invention will be described.
First, the steel slab having the above-mentioned alloy composition is reheated at 1020 to 1150 ° C. If the reheating temperature exceeds 1150 ° C., the crystal grains of austenite may become coarse and the toughness may be lowered. On the other hand, if the temperature is lower than 1020 ° C. , Ti, Nb and the like may not be sufficiently dissolved, which may lead to a decrease in strength.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170131605A KR101949036B1 (en) | 2017-10-11 | 2017-10-11 | Thick steel sheet having excellent low temperature strain aging impact properties and method of manufacturing the same |
| KR10-2017-0131605 | 2017-10-11 | ||
| PCT/KR2018/011722 WO2019074236A1 (en) | 2017-10-11 | 2018-10-04 | Thick steel plate having excellent low-temperature strain aging impact property and manufacturing method therefor |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2020537047A JP2020537047A (en) | 2020-12-17 |
| JP2020537047A5 true JP2020537047A5 (en) | 2021-02-04 |
| JP7022822B2 JP7022822B2 (en) | 2022-02-18 |
Family
ID=66101465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020520658A Active JP7022822B2 (en) | 2017-10-11 | 2018-10-04 | Thick steel sheet with excellent low-temperature deformation aging impact characteristics and its manufacturing method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3696287B1 (en) |
| JP (1) | JP7022822B2 (en) |
| KR (1) | KR101949036B1 (en) |
| CN (1) | CN111225987B (en) |
| WO (1) | WO2019074236A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102218423B1 (en) * | 2019-08-23 | 2021-02-19 | 주식회사 포스코 | Thin steel plate having excellent low-temperature toughness and ctod properties, and method for manufacturing thereof |
| KR102255822B1 (en) * | 2019-12-06 | 2021-05-25 | 주식회사 포스코 | Normalling heat treatable steel sheet having godd low impact toughness and method for the same |
| CN113088834B (en) * | 2021-02-26 | 2022-12-09 | 舞阳钢铁有限责任公司 | High-quality steel plate for offshore oil construction and production method thereof |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59200723A (en) * | 1983-04-26 | 1984-11-14 | Nippon Steel Corp | Manufacture of high tension steel plate with superior toughness |
| JP2662485B2 (en) * | 1991-11-26 | 1997-10-15 | 新日本製鐵株式会社 | Steel sheet having good low-temperature toughness and method for producing the same |
| JP3314295B2 (en) * | 1995-04-26 | 2002-08-12 | 新日本製鐵株式会社 | Method of manufacturing thick steel plate with excellent low temperature toughness |
| KR20030021965A (en) * | 2001-09-10 | 2003-03-15 | 주식회사 포스코 | a hot-rolled steel sheet wiht good ultra low temperature toughness and the method of the same |
| KR100544638B1 (en) * | 2001-12-24 | 2006-01-24 | 주식회사 포스코 | A method for manufacturing high strength plate having the superior fracture arrest |
| JP4788146B2 (en) * | 2004-03-09 | 2011-10-05 | Ｊｆｅスチール株式会社 | Hot rolled steel sheet for low YR type ERW welded steel pipe excellent in aging resistance and method for producing the same |
| KR100851189B1 (en) * | 2006-11-02 | 2008-08-08 | 주식회사 포스코 | Steel plate for linepipe having ultra-high strength and excellent low temperature toughness and manufacturing method of the same |
| CN1995430A (en) * | 2006-12-25 | 2007-07-11 | 广东韶钢松山股份有限公司 | Method for improving steel plate low temperature tenacity and strain ageing low temperature tenacity |
| ES2402548T3 (en) * | 2007-12-04 | 2013-05-06 | Posco | Steel sheet with high strength and excellent low temperature hardness and method of manufacturing it |
| KR100957968B1 (en) * | 2007-12-27 | 2010-05-17 | 주식회사 포스코 | High strength and toughness thick steel plate having excellent base metal ctod property and method for producing the same |
| KR20100040233A (en) * | 2008-10-09 | 2010-04-19 | 삼성전자주식회사 | Method and apparatus for transmitting/receiving broadcasting data through peer-to-peer network |
| JP5234951B2 (en) * | 2008-11-21 | 2013-07-10 | 株式会社神戸製鋼所 | Steel material excellent in toughness of weld heat-affected zone and base metal low-temperature toughness, and method for producing the same |
| JP5272759B2 (en) * | 2009-02-02 | 2013-08-28 | 新日鐵住金株式会社 | Thick steel plate manufacturing method |
| RU2496904C1 (en) * | 2009-09-30 | 2013-10-27 | ДжФЕ СТИЛ КОРПОРЕЙШН | Plate steel characterised by low ratio between yield point and limit strength, high strength and high impact strength, and method for its manufacture |
| KR20120026641A (en) * | 2009-11-20 | 2012-03-19 | 신닛뽄세이테쯔 카부시키카이샤 | Thick steel plate for ship hull and process for production thereof |
| KR20110130974A (en) * | 2010-05-28 | 2011-12-06 | 현대제철 주식회사 | Steel plate with improved strain aging impact property and method of manufacturing the same |
| JP5459166B2 (en) * | 2010-09-28 | 2014-04-02 | 新日鐵住金株式会社 | Steel plate for ice sea structure |
| JP5612532B2 (en) * | 2011-04-26 | 2014-10-22 | 株式会社神戸製鋼所 | Steel sheet excellent in low temperature toughness and weld joint fracture toughness and method for producing the same |
| JP5739225B2 (en) * | 2011-05-17 | 2015-06-24 | 大阪瓦斯株式会社 | Engine power generator and operation method thereof |
| JP5782827B2 (en) * | 2011-05-24 | 2015-09-24 | Ｊｆｅスチール株式会社 | High compressive strength steel pipe for sour line pipe and manufacturing method thereof |
| CN102304670A (en) * | 2011-09-22 | 2012-01-04 | 首钢总公司 | Steel plate with -40 DEG C strain aging and high toughness and production method thereof |
| CN102400043B (en) * | 2011-11-10 | 2013-09-25 | 舞阳钢铁有限责任公司 | Large-thickness steel plate for oceaneering |
| JP5720612B2 (en) * | 2012-03-30 | 2015-05-20 | 新日鐵住金株式会社 | High strength hot rolled steel sheet excellent in formability and low temperature toughness and method for producing the same |
| JP5732017B2 (en) * | 2012-10-03 | 2015-06-10 | 株式会社神戸製鋼所 | Thick steel plate with little toughness change before and after strain aging |
| KR101482359B1 (en) * | 2012-12-27 | 2015-01-13 | 주식회사 포스코 | Method for manufacturing high strength steel plate having excellent toughness and low-yield ratio property |
| WO2015151469A1 (en) * | 2014-03-31 | 2015-10-08 | Ｊｆｅスチール株式会社 | Steel material for highly-deformable line pipes having superior strain aging characteristics and anti-hic characteristics, method for manufacturing same, and welded steel pipe |
| CN104789892B (en) * | 2015-03-20 | 2017-03-08 | 宝山钢铁股份有限公司 | There is low yield strength ratio high toughness thick steel plate and its manufacture method of superior low temperature impact flexibility |
| JP2017082267A (en) * | 2015-10-26 | 2017-05-18 | 株式会社神戸製鋼所 | Thick steel plate |
| KR101758484B1 (en) * | 2015-12-15 | 2017-07-17 | 주식회사 포스코 | High strength steel sheet having excellent strain aging impact property and impact property in heat-affected zone and method for manufacturing the same |
| KR101758520B1 (en) * | 2015-12-23 | 2017-07-17 | 주식회사 포스코 | High strength structural steel sheet having excellent heat treatment resistance and method of manufacturing the same |
| JP6601286B2 (en) * | 2016-03-15 | 2019-11-06 | 日本製鉄株式会社 | Hot-rolled steel sheet and manufacturing method thereof |
-
2017
- 2017-10-11 KR KR1020170131605A patent/KR101949036B1/en active
-
2018
- 2018-10-04 WO PCT/KR2018/011722 patent/WO2019074236A1/en unknown
- 2018-10-04 EP EP18865647.4A patent/EP3696287B1/en active Active
- 2018-10-04 CN CN201880066217.9A patent/CN111225987B/en active Active
- 2018-10-04 JP JP2020520658A patent/JP7022822B2/en active Active
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