JPH0583607B2 - - Google Patents

Info

Publication number: JPH0583607B2
Authority: JP; Japan
Prior art keywords: less; temperature; toughness; steel; rolling
Prior art date: 1987-01-20
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired - Lifetime

Application number

JP62009100A

Other languages

English (en)

Japanese (ja)

Other versions

JPS63179020A (ja

Inventor

Hiroshi Yoshikawa

Yokika Kawashima

Takaharu Konno

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Nippon Steel Corp

Original Assignee

Nippon Steel Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1987-01-20

Filing date

1987-01-20

Publication date

1993-11-26

1987-01-20 Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp

1987-01-20 Priority to JP910087A priority Critical patent/JPS63179020A/ja

1988-07-23 Publication of JPS63179020A publication Critical patent/JPS63179020A/ja

1993-11-26 Publication of JPH0583607B2 publication Critical patent/JPH0583607B2/ja

Status Granted legal-status Critical Current

Links

238000001816 cooling Methods 0.000 claims description 62
229910000831 Steel Inorganic materials 0.000 claims description 46
239000010959 steel Substances 0.000 claims description 46
238000005096 rolling process Methods 0.000 claims description 41
238000001953 recrystallisation Methods 0.000 claims description 29
229910001566 austenite Inorganic materials 0.000 claims description 18
238000004519 manufacturing process Methods 0.000 claims description 15
229910052799 carbon Inorganic materials 0.000 claims description 11
238000000034 method Methods 0.000 claims description 11
238000005098 hot rolling Methods 0.000 claims description 10
229910052748 manganese Inorganic materials 0.000 claims description 8
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
238000009749 continuous casting Methods 0.000 claims description 6
239000012535 impurity Substances 0.000 claims description 5
229910052750 molybdenum Inorganic materials 0.000 claims description 5
229910052759 nickel Inorganic materials 0.000 claims description 5
229910052758 niobium Inorganic materials 0.000 claims description 5
229910052804 chromium Inorganic materials 0.000 claims description 4
229910052802 copper Inorganic materials 0.000 claims description 4
229910052742 iron Inorganic materials 0.000 claims description 4
229910052720 vanadium Inorganic materials 0.000 claims description 4
229910052726 zirconium Inorganic materials 0.000 claims description 4
229910052719 titanium Inorganic materials 0.000 claims description 3
229910052791 calcium Inorganic materials 0.000 claims 2
229910052715 tantalum Inorganic materials 0.000 claims 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
230000000694 effects Effects 0.000 description 8
229910001563 bainite Inorganic materials 0.000 description 6
230000000052 comparative effect Effects 0.000 description 6
238000010438 heat treatment Methods 0.000 description 6
230000007423 decrease Effects 0.000 description 5
238000007792 addition Methods 0.000 description 4
229910045601 alloy Inorganic materials 0.000 description 4
239000000956 alloy Substances 0.000 description 4
238000005275 alloying Methods 0.000 description 4
230000006866 deterioration Effects 0.000 description 4
229910000859 α-Fe Inorganic materials 0.000 description 4
XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
239000000203 mixture Substances 0.000 description 3
239000000047 product Substances 0.000 description 3
230000009466 transformation Effects 0.000 description 3
229910006639 Si—Mn Inorganic materials 0.000 description 2
238000005516 engineering process Methods 0.000 description 2
229910000734 martensite Inorganic materials 0.000 description 2
239000000463 material Substances 0.000 description 2
229910001562 pearlite Inorganic materials 0.000 description 2
239000002344 surface layer Substances 0.000 description 2
239000000470 constituent Substances 0.000 description 1
239000013078 crystal Substances 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
230000002950 deficient Effects 0.000 description 1
230000001627 detrimental effect Effects 0.000 description 1
238000002474 experimental method Methods 0.000 description 1
238000009863 impact test Methods 0.000 description 1
238000009776 industrial production Methods 0.000 description 1
230000003647 oxidation Effects 0.000 description 1
238000007254 oxidation reaction Methods 0.000 description 1
239000002244 precipitate Substances 0.000 description 1
238000007670 refining Methods 0.000 description 1
238000007711 solidification Methods 0.000 description 1
230000008023 solidification Effects 0.000 description 1
238000005728 strengthening Methods 0.000 description 1
238000009864 tensile test Methods 0.000 description 1

Landscapes

Heat Treatment Of Steel (AREA)

JP910087A 1987-01-20 1987-01-20 強度・靭性に優れ、板厚方向の断面硬度の差が小さい鋼板の製造法 Granted JPS63179020A (ja)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
JP910087A JPS63179020A (ja)	1987-01-20	1987-01-20	強度・靭性に優れ、板厚方向の断面硬度の差が小さい鋼板の製造法

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP910087A JPS63179020A (ja)	1987-01-20	1987-01-20	強度・靭性に優れ、板厚方向の断面硬度の差が小さい鋼板の製造法

Publications (2)

Publication Number	Publication Date
JPS63179020A JPS63179020A (ja)	1988-07-23
JPH0583607B2 true JPH0583607B2 (ru)	1993-11-26

Family

ID=11711203

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP910087A Granted JPS63179020A (ja)	1987-01-20	1987-01-20	強度・靭性に優れ、板厚方向の断面硬度の差が小さい鋼板の製造法

Country Status (1)

Country	Link
JP (1)	JPS63179020A (ru)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH07116504B2 (ja) *	1990-12-25	1995-12-13	株式会社神戸製鋼所	板厚方向の硬度差が小さい板厚５０ｍｍ以上の５０キロ級低降伏比厚肉高張力鋼板の製造方法
JP4110652B2 (ja) *	1999-01-05	2008-07-02	Ｊｆｅスチール株式会社	材質ばらつきが少なくかつ溶接部低温靱性に優れた鋼材の製造方法
JP5029748B2 (ja) *	2010-09-17	2012-09-19	Ｊｆｅスチール株式会社	靭性に優れた高強度熱延鋼板およびその製造方法
JP5605136B2 (ja) *	2010-09-30	2014-10-15	Ｊｆｅスチール株式会社	鋼板内の材質均一性に優れた高強度鋼板及びその製造方法
JP5640614B2 (ja) *	2010-09-30	2014-12-17	Ｊｆｅスチール株式会社	ラインパイプ用高強度鋼板及びその製造方法並びにラインパイプ用高強度鋼板を用いた高強度鋼管

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS57143430A (en) *	1981-02-27	1982-09-04	Nippon Kokan Kk <Nkk>	Manufacture of high tensile steel with weldability and >=50kg/mm2 strength
JPS60204826A (ja) *	1984-03-29	1985-10-16	Sumitomo Metal Ind Ltd	低温靭性の優れたＴｉ系高張力鋼の製造方法

1987
- 1987-01-20 JP JP910087A patent/JPS63179020A/ja active Granted

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS57143430A (en) *	1981-02-27	1982-09-04	Nippon Kokan Kk <Nkk>	Manufacture of high tensile steel with weldability and >=50kg/mm2 strength
JPS60204826A (ja) *	1984-03-29	1985-10-16	Sumitomo Metal Ind Ltd	低温靭性の優れたＴｉ系高張力鋼の製造方法

Also Published As

Publication number	Publication date
JPS63179020A (ja)	1988-07-23

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Legal Events

Date	Code	Title	Description
2007-01-20	EXPY	Cancellation because of completion of term