CN105177408A - Low-cost hot-rolled thin strip steel containing boron and manufacturing method thereof - Google Patents

Low-cost hot-rolled thin strip steel containing boron and manufacturing method thereof Download PDF

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Publication number
CN105177408A
CN105177408A CN201510664380.3A CN201510664380A CN105177408A CN 105177408 A CN105177408 A CN 105177408A CN 201510664380 A CN201510664380 A CN 201510664380A CN 105177408 A CN105177408 A CN 105177408A
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temperature
boron
steel
thin strip
strip steel
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Inventor
齐超群
彭海涛
李雪松
周涛
吴鹏
孙仕良
黄昆奕
张超
房欣
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Tangshan Iron and Steel Group Co Ltd
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Tangshan Iron and Steel Group Co Ltd
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Abstract

The invention relates to low-cost hot-rolled thin strip steel containing boron and a manufacturing method thereof. The low-cost hot-rolled thin strip steel containing boron is composed of, by mass, 0.05%-0.12% of C, 0.33%-0.50% of Mn, 0%-0.040% of S, 0%-0.040% of P, 0.10%-0.30% of Si and 0.0008%-0.0040% of B. The manufacturing method of the low-cost hot-rolled thin strip steel containing boron comprises the steps that raw material molten iron and scrap steel are added into a converter together to be smelted; deoxidation and alloying are conducted; argon blowing is conducted; continuous casting is conducted; and hot rolling is conducted. According to the low-cost hot-rolled thin strip steel containing boron and the manufacturing method thereof, external refining through a low-frequency (LF) furnace and a vacuum furnace is omitted, and production cost is reduced; the alloy elements such as aluminum, titanium and chromium do not need to be added, and alloy elements are saved; ferro-boron is added finally according to alloying operation and an argon blowing system, so that the yield of boron is over 70%; by controlling the additive amount of boron and slightly adjusting the heating temperature, the hot-rolling temperature and the cooling temperature, boron-contained steel with different yield strengths and different tensile strengths is obtained.

Description

Low cost hot rolling boracic Thin Strip Steel and manufacture method thereof
Technical field
The present invention relates to band steel and manufacture method, specifically a kind of low cost hot rolling boracic Thin Strip Steel and manufacture method thereof, belong to metallurgical technology field.
Background technology
Along with the development of steel industry, add trace element and the quality and performance of steel is played an important role, wherein, boron is as the trace element added in steel, can significantly improve the hardening capacity of steel, what increase steel can through hardening size, improves the homogeneity of the steel product cross-sectional inner tissue after quenching and performance.Meanwhile, recent much research finds, the suitable boron that adds can have improvement in various degree to the yield strength of steel grade, tensile strength, fatigue strength and wear resistance etc.
But because the chemical property of boron is active, oxidizable, comparatively greatly, cause the rate of recovery of boron low by [O], [N] impact in steel.For improving the boron rate of recovery, at process aspect, current each steel mill generally adopts LF refining boron alloyed boron alloyed with vacuum refinement.The manufacture method of " a kind of low cost boron-containing steel and manufacture method thereof " low cost boron-containing steel involved by (publication number CN103160738A) is in the LF refining later stage, by adding aluminium deoxidation, adding ferrotianium fixed nitrogen, control O, N content in steel, finally add ferro-boron, the homogeneity that the recovery rate of guarantee boron and boron distribute in steel.The smelting process of Boron contents " in a kind of stable raising boron-containing steel " (publication number CN102994700B) adopts high carbon ferromanganese, high carbon ferro-chrome, iron core aluminium to enter deoxidation alloying by converter tapping process, adopt omnidistance BOTTOM ARGON BLOWING and deslagging process, reduce the oxygen level in steel and nitrogen content; Complete molten steel of tapping winches to argon station, adds oxygen activity in ferro-aluminum adjustment steel and go to LF refining furnace after requiring span of control; The refining of LF stove is carried out boron alloyed again after adopting arc-covering slag operation, the control of soft blow argon, deep deoxidation technique, Ti Alloying technique, soft blow argon when carrying out long more afterwards.
In sum, by refining route, although the recovery rate of boron is at 60%-90% in the steel obtained, technical process is complicated, and LF refining and vacuum refinement increase cost.In order to simplification of flowsheet, reduce smelting cost, ensure the recovery rate of boron, improve the quality and performance of steel grade, propose a kind of low cost hot rolling boracic Thin Strip Steel and preparation method thereof.
Summary of the invention
One of the object of the invention provides a kind of low cost hot rolling boracic Thin Strip Steel, and cost is low and the quality and performance of steel grade is good.
Two of the object of the invention is to provide low cost hot rolling boracic Thin Strip Steel manufacture method, the boron rate of recovery can be ensured and be uniformly distributed, utilizing hot delivery and hot charging technology and cooling controlling and rolling controlling process, in smelting, cancelling LF refining and vacuum refinement, simplify technical process, reduce production cost.
For achieving the above object, the present invention adopts following technical scheme:
A kind of low cost hot rolling boracic Thin Strip Steel, its chemical element composition and quality % thereof are C:0.05% ~ 0.12%, Mn:0.33% ~ 0.50%, S :≤0.040%, P :≤0.040%, Si:0.10% ~ 0.30%, B:0.0008% ~ 0.0040%, surplus is Fe and inevitable impurity.
Above-mentioned low cost hot rolling boracic Thin Strip Steel preferred version, its chemical element composition and quality % thereof are C:0.05% ~ 0.09%, Mn:0.32% ~ 0.42%, S :≤0.035%, P :≤0.030%, Si:0.10% ~ 0.16%, B:0.0010% ~ 0.0020%, surplus is Fe and inevitable impurity.
A manufacture method for low cost hot rolling boracic Thin Strip Steel, comprises the steps:
(1) raw material molten iron is added converter together with steel scrap to smelt;
(2) deoxidation alloying: add deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon, ferro-boron successively during tapping 0.75min ~ 1.75min, ferro-boron adds by 0.1 ~ 0.125Kg/ ton iron;
(3) Argon: tapping process keeps strong Argon, keeps 2 ~ 3min strong Argon behind argon station, then performs soft blow operation, soft blow time >=6min;
(4) terminal point control: component requirements: C0.05% ~ 0.08%, S≤0.025%, P≤0.020%, ladle sample requires that B0.0010% ~ 0.0020% is to continuous casting steel supply;
(5) continuous casting: produce by casting machine five stream and consider, open and water temperature: 1640 DEG C ~ 1650 DEG C, second and third stove pouring temperature: 1600 DEG C ~ 1610 DEG C, normally connect and water temperature: 1580 DEG C ~ 1590 DEG C, when a continuous caster often stream production less, the corresponding raising of the second furnace temperature 10 DEG C; As tundish temperature < 1535 DEG C, continuous caster pulling rate is 1.25m/min-1.45m/min; When tundish temperature 1535 DEG C ~ 1545 DEG C, continuous caster pulling rate is 1.00m/min-1.30m/min; When tundish temperature 1545 DEG C ~ 1555 DEG C, pulling rate is 0.9m/min-1.2m/min; As tundish temperature > 1555 DEG C, continuous caster pulling rate is 0.8m/min-0.9m/min;
(6) hot rolling: billet heating temperature≤1250 DEG C, heat-up time is hot delivery and hot charging heating steel billet time 90 ~ 120min, start rolling temperature 1150 ~ 1120 DEG C, finishing temperature 930 ~ 940 DEG C, coiling temperature 680 ~ 700 DEG C.
The manufacture method preferred version of above-mentioned low cost hot rolling boracic Thin Strip Steel is:
Molten iron temperature 1250 DEG C-1350 DEG C; Converter Intake Quantity 140 ± 3t, wherein, molten iron accounting 90 ~ 95%, steel scrap accounting 5 ~ 10%.
The add-on of deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon is respectively: Si-Al-Ba-Ca 0.59 ~ 0.61Kg/t, ferrosilicoaluminum 0.94 ~ 1.18Kg/t, silicomanganese 3.86 ~ 3.88Kg/t, ferrosilicon 0.43 ~ 0.68Kg/t.
Adopt the present invention of technique scheme, compared with prior art, its beneficial effect is:
(1) technical process is simple, eliminates LF stove and vacuum oven external refining, reduces production cost.
(2) from Composition Design, without the need to adding the alloying elements such as aluminium, titanium, chromium, being conducive to saving alloying element, the pollution to environment is reduced.
(3) manufacturing process is flexible, according to alloying operation and Argon system, finally just add ferro-boron, make boron recovery rate more than 70%, boron mixes, simultaneously by controlling the fine setting of boron add-on and heating, hot rolling, cooling temperature, obtain the boron-containing steel of different yield strength, tensile strength.
Embodiment
By the following examples in detail the present invention is described in detail, object is only to understand content of the present invention better, the cited case protection domain described in unrestricted technical solution of the present invention.
Embodiment 1:
A kind of low cost hot rolling boracic Thin Strip Steel, its chemical element composition and quality % thereof are: C:0.07%, Mn:0.34%, S:0.016%, P:0.015%, Si:0.13%, B:0.0011%, and surplus is Fe and inevitable impurity; B recovery rate 75.4%; Hot rolling boracic Thin Strip Steel size: long 490m, wide 530mm, thick 3.0mm.
The manufacture method of above-mentioned low cost hot rolling boracic Thin Strip Steel, carry out in the steps below:
(1) raw material molten iron is added converter together with steel scrap to smelt; Molten iron temperature 1300 DEG C; Converter Intake Quantity 140 ± 3t, wherein, molten iron accounting 95%, steel scrap accounting 5%;
(2) deoxidation alloying: add deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon, ferro-boron successively during tapping 1min, ferro-boron adds by 0.1 ~ 0.125Kg/ ton iron, and the add-on of deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon is respectively: Si-Al-Ba-Ca 0.59 ~ 0.61Kg/t, ferrosilicoaluminum 0.94 ~ 1.18Kg/t, silicomanganese 3.86 ~ 3.88Kg/t, ferrosilicon 0.43 ~ 0.68Kg/t.;
(3) Argon: tapping process keeps strong Argon, keeps 2 ~ 3min strong Argon behind argon station, then performs soft blow operation, soft blow time >=6min;
(4) terminal point control: component requirements: C0.07%, S0.016%, P0.015%, ladle sample requires that B0.0011% is to continuous casting steel supply; Base type: 165 × 505;
(5) continuous casting: produce by casting machine five stream and consider, open and water temperature: 1640 DEG C ~ 1650 DEG C, second and third stove pouring temperature: 1600 DEG C ~ 1610 DEG C, normally connect and water temperature: 1580 DEG C ~ 1590 DEG C, when a continuous caster often stream production less, the corresponding raising of the second furnace temperature 10 DEG C; As tundish temperature < 1535 DEG C, continuous caster pulling rate is 1.25m/min-1.45m/min; When tundish temperature 1535 DEG C ~ 1545 DEG C, continuous caster pulling rate is 1.00m/min-1.30m/min; When tundish temperature 1545 DEG C ~ 1555 DEG C, pulling rate is 0.9m/min-1.2m/min; As tundish temperature > 1555 DEG C, continuous caster pulling rate is 0.8m/min-0.9m/min;
(6) hot rolling: billet heating temperature 1246 DEG C, heat-up time is hot delivery and hot charging heating steel billet time 90min, start rolling temperature 1190 DEG C, finishing temperature 936 DEG C, coiling temperature 685 DEG C.
Embodiment 2:
A kind of low cost hot rolling boracic Thin Strip Steel, its chemical element composition and quality % thereof are: C:0.07%, Mn:0.35%, S:0.018%, P:0.016%, Si:0.13%, B:0.0010%, and surplus is Fe and inevitable impurity; B recovery rate 72.7%; Hot rolling boracic Thin Strip Steel size: long 749m, wide 585mm, thick 2.0mm.
The manufacture method of above-mentioned low cost hot rolling boracic Thin Strip Steel, carry out in the steps below:
(1) raw material molten iron is added converter together with steel scrap to smelt; Molten iron temperature 1250 DEG C; Converter Intake Quantity 140 ± 3t, wherein, molten iron accounting 93%, steel scrap accounting 7%;
(2) deoxidation alloying: add deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon, ferro-boron successively during tapping 0.75min, ferro-boron adds by 0.1 ~ 0.125Kg/ ton iron, and the add-on of deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon is respectively: the add-on of deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon is respectively: Si-Al-Ba-Ca 0.59 ~ 0.61Kg/t, ferrosilicoaluminum 0.94 ~ 1.18Kg/t, silicomanganese 3.86 ~ 3.88Kg/t, ferrosilicon 0.43 ~ 0.68Kg/t;
(3) Argon: tapping process keeps strong Argon, keeps 2 ~ 3min strong Argon behind argon station, then performs soft blow operation, soft blow time >=6min;
(4) terminal point control: component requirements: C0.07%, S0.018%, P≤0.016%, ladle sample requires that B0.0010% is to continuous casting steel supply; Base type: 165 × 565;
(5) continuous casting: produce by casting machine five stream and consider, open and water temperature: 1640 DEG C ~ 1650 DEG C, second and third stove pouring temperature: 1600 DEG C ~ 1610 DEG C, normally connect and water temperature: 1580 DEG C ~ 1590 DEG C, when a continuous caster often stream production less, the corresponding raising of the second furnace temperature 10 DEG C; As tundish temperature < 1535 DEG C, continuous caster pulling rate is 1.25m/min-1.45m/min; When tundish temperature 1535 DEG C ~ 1545 DEG C, continuous caster pulling rate is 1.00m/min-1.30m/min; When tundish temperature 1545 DEG C ~ 1555 DEG C, pulling rate is 0.9m/min-1.2m/min; As tundish temperature > 1555 DEG C, continuous caster pulling rate is 0.8m/min-0.9m/min;
(6) hot rolling: billet heating temperature 1242 DEG C, heat-up time is hot delivery and hot charging heating steel billet time 98min, start rolling temperature 1185 DEG C, finishing temperature 932 DEG C, coiling temperature 680 DEG C.
Embodiment 3:
A kind of low cost hot rolling boracic Thin Strip Steel, its chemical element composition and quality % thereof are: C:0.08%, Mn:0.36%, S:0.016%, P:0.015%, Si:0.15%, B:0.0011%, and surplus is Fe and inevitable impurity; B recovery rate 76.9%; Hot rolling boracic Thin Strip Steel size: long 430m, wide 635mm, thick 3.5mm.
The manufacture method of above-mentioned low cost hot rolling boracic Thin Strip Steel, carry out in the steps below:
(1) raw material molten iron is added converter together with steel scrap to smelt; Molten iron temperature 1330 DEG C; Converter Intake Quantity 140 ± 3t, wherein, molten iron accounting 90%, steel scrap accounting 10%;
(2) deoxidation alloying: add deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon, ferro-boron successively during tapping 1.55min, ferro-boron adds by 0.1 ~ 0.125Kg/ ton iron, and the add-on of deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon is respectively: the add-on of deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon is respectively: Si-Al-Ba-Ca 0.59 ~ 0.61Kg/t, ferrosilicoaluminum 0.94 ~ 1.18Kg/t, silicomanganese 3.86 ~ 3.88Kg/t, ferrosilicon 0.43 ~ 0.68Kg/t;
(3) Argon: tapping process keeps strong Argon, keeps 2 ~ 3min strong Argon behind argon station, then performs soft blow operation, soft blow time >=6min;
(4) terminal point control: component requirements: C0.08%, S0.016%, P0.015%, ladle sample requires that B0.0011% is to continuous casting steel supply; Base type: 165 × 620;
(5) continuous casting: produce by casting machine five stream and consider, open and water temperature: 1640 DEG C ~ 1650 DEG C, second and third stove pouring temperature: 1600 DEG C ~ 1610 DEG C, normally connect and water temperature: 1580 DEG C ~ 1590 DEG C, when a continuous caster often stream production less, the corresponding raising of the second furnace temperature 10 DEG C; As tundish temperature < 1535 DEG C, continuous caster pulling rate is 1.25m/min-1.45m/min; When tundish temperature 1535 DEG C ~ 1545 DEG C, continuous caster pulling rate is 1.00m/min-1.30m/min; When tundish temperature 1545 DEG C ~ 1555 DEG C, pulling rate is 0.9m/min-1.2m/min; As tundish temperature > 1555 DEG C, continuous caster pulling rate is 0.8m/min-0.9m/min;
(6) hot rolling: billet heating temperature 1249 DEG C, heat-up time is hot delivery and hot charging heating steel billet time 100min, start rolling temperature 1195 DEG C, finishing temperature 938 DEG C, coiling temperature 695 DEG C.
According to above-mentioned three embodiments that the difference of base type is arranged, the mechanical property of its hot rolling boracic Thin Strip Steel is as following table.
Yield strength MPa Tensile strength MPa Elongation after fracture % 180 ° of cold bending tests
Embodiment 1 310 381 34.5 Qualified
Embodiment 2 306 382 33.5 Qualified
Embodiment 3 315 390 33.5 Qualified
The foregoing is only the better feasible embodiment of the present invention, not thereby limit to interest field of the present invention, the equivalence change that all utilizations description of the present invention is done, be all contained within interest field of the present invention.

Claims (5)

1. a low cost hot rolling boracic Thin Strip Steel, is characterized in that: its chemical element composition and quality % thereof are
C:0.05% ~ 0.12%, Mn:0.33% ~ 0.50%, S :≤0.040%, P :≤0.040%, Si:0.10% ~ 0.30%, B:0.0008% ~ 0.0040%, surplus is Fe and inevitable impurity.
2. low cost hot rolling boracic Thin Strip Steel according to claim 1, it is characterized in that: its chemical element composition and quality % thereof are C:0.05% ~ 0.09%, Mn:0.32% ~ 0.42%, S :≤0.035%, P :≤0.030%, Si:0.10% ~ 0.16%, B:0.0010% ~ 0.0020%, surplus is Fe and inevitable impurity.
3. a manufacture method for low cost hot rolling boracic Thin Strip Steel described in claim 1 or 2, is characterized in that, comprise the steps:
(1) raw material molten iron is added converter together with steel scrap to smelt;
(2) deoxidation alloying: add deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon, ferro-boron successively during tapping 0.75min ~ 1.75min, ferro-boron adds by 0.1 ~ 0.125Kg/ ton iron;
(3) Argon: tapping process keeps strong Argon, keeps 2 ~ 3min strong Argon behind argon station, then performs soft blow operation, soft blow time >=6min;
(4) terminal point control: component requirements: C0.05% ~ 0.08%, S≤0.025%, P≤0.020%, ladle sample requires that B0.0010% ~ 0.0020% is to continuous casting steel supply;
(5) continuous casting: produce by casting machine five stream and consider, open and water temperature: 1640 DEG C ~ 1650 DEG C, second and third stove pouring temperature: 1600 DEG C ~ 1610 DEG C, normally connect and water temperature: 1580 DEG C ~ 1590 DEG C, when a continuous caster often stream production less, the corresponding raising of the second furnace temperature 10 DEG C; As tundish temperature < 1535 DEG C, continuous caster pulling rate is 1.25m/min-1.45m/min; When tundish temperature 1535 DEG C ~ 1545 DEG C, continuous caster pulling rate is 1.00m/min-1.30m/min; When tundish temperature 1545 DEG C ~ 1555 DEG C, pulling rate is 0.9m/min-1.2m/min; As tundish temperature > 1555 DEG C, continuous caster pulling rate is 0.8m/min-0.9m/min;
(6) hot rolling: billet heating temperature≤1250 DEG C, heat-up time is hot delivery and hot charging heating steel billet time 90 ~ 120min, start rolling temperature 1150 ~ 1120 DEG C, finishing temperature 930 ~ 940 DEG C, coiling temperature 680 ~ 700 DEG C.
4. the manufacture method of low cost hot rolling boracic Thin Strip Steel according to claim 3, is characterized in that: molten iron temperature 1250 DEG C-1350 DEG C; Converter Intake Quantity 140 ± 3t, wherein, molten iron accounting 90 ~ 95%, steel scrap accounting 5 ~ 10%.
5. the manufacture method of low cost hot rolling boracic Thin Strip Steel according to claim 3, is characterized in that: the add-on of deoxygenated alloy Si-Al-Ba-Ca, ferrosilicoaluminum, silicomanganese, ferrosilicon is respectively:: Si-Al-Ba-Ca 0.59 ~ 0.61Kg/t, ferrosilicoaluminum 0.94 ~ 1.18Kg/t, silicomanganese 3.86 ~ 3.88Kg/t, ferrosilicon 0.43 ~ 0.68Kg/t.
CN201510664380.3A 2015-10-16 2015-10-16 Low-cost hot-rolled thin strip steel containing boron and manufacturing method thereof Pending CN105177408A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109234607A (en) * 2018-10-26 2019-01-18 山东钢铁集团日照有限公司 A kind of wide plate base production method improving the molten boron content of acid
CN109957717A (en) * 2017-12-25 2019-07-02 上海梅山钢铁股份有限公司 A kind of precision stamping hot rolled steel plate containing B and its manufacturing method
CN111778448A (en) * 2020-06-15 2020-10-16 南京钢铁股份有限公司 Production method of extremely-low-cost boron-containing thin-specification outlet alloy steel
WO2021136336A1 (en) * 2019-12-30 2021-07-08 Jiangsu Shagang Group Co., Ltd. Method for producing boron-added steel based on twin-roll strip casting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013091845A (en) * 2011-10-03 2013-05-16 Jfe Steel Corp High-tensile steel plate giving welding heat-affected zone with excellent low-temperature toughness, and method for producing the same
CN103469056A (en) * 2013-08-15 2013-12-25 甘肃酒钢集团宏兴钢铁股份有限公司 High-tensile-to-yield-ratio common hot rolled steel plate and making method thereof
CN104073730A (en) * 2014-07-24 2014-10-01 唐山国丰钢铁有限公司 Stamping narrow-strip-steel and ultra-fast cooling production process thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013091845A (en) * 2011-10-03 2013-05-16 Jfe Steel Corp High-tensile steel plate giving welding heat-affected zone with excellent low-temperature toughness, and method for producing the same
CN103469056A (en) * 2013-08-15 2013-12-25 甘肃酒钢集团宏兴钢铁股份有限公司 High-tensile-to-yield-ratio common hot rolled steel plate and making method thereof
CN104073730A (en) * 2014-07-24 2014-10-01 唐山国丰钢铁有限公司 Stamping narrow-strip-steel and ultra-fast cooling production process thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109957717A (en) * 2017-12-25 2019-07-02 上海梅山钢铁股份有限公司 A kind of precision stamping hot rolled steel plate containing B and its manufacturing method
CN109234607A (en) * 2018-10-26 2019-01-18 山东钢铁集团日照有限公司 A kind of wide plate base production method improving the molten boron content of acid
CN109234607B (en) * 2018-10-26 2020-11-10 山东钢铁集团日照有限公司 Wide slab production method for increasing acid-soluble boron content
WO2021136336A1 (en) * 2019-12-30 2021-07-08 Jiangsu Shagang Group Co., Ltd. Method for producing boron-added steel based on twin-roll strip casting
CN111778448A (en) * 2020-06-15 2020-10-16 南京钢铁股份有限公司 Production method of extremely-low-cost boron-containing thin-specification outlet alloy steel

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Application publication date: 20151223