CN101050505A - Soldering steel plate in high intensity in use for ocean by large line energy, and manufacturing method - Google Patents
Soldering steel plate in high intensity in use for ocean by large line energy, and manufacturing method Download PDFInfo
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- CN101050505A CN101050505A CNA2007100521352A CN200710052135A CN101050505A CN 101050505 A CN101050505 A CN 101050505A CN A2007100521352 A CNA2007100521352 A CN A2007100521352A CN 200710052135 A CN200710052135 A CN 200710052135A CN 101050505 A CN101050505 A CN 101050505A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 238000005476 soldering Methods 0.000 title claims description 11
- 239000000126 substance Substances 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 238000009749 continuous casting Methods 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 6
- 238000002791 soaking Methods 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 229910002593 Fe-Ti Inorganic materials 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 238000005098 hot rolling Methods 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000004615 ingredient Substances 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 238000010891 electric arc Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 34
- 238000009628 steelmaking Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 5
- 239000012467 final product Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- RMLPZKRPSQVRAB-UHFFFAOYSA-N tris(3-methylphenyl) phosphate Chemical compound CC1=CC=CC(OP(=O)(OC=2C=C(C)C=CC=2)OC=2C=C(C)C=CC=2)=C1 RMLPZKRPSQVRAB-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Heat Treatment Of Steel (AREA)
Abstract
本发明涉及一种大线能量焊接高强度海洋用钢板及其制造方法。该板坯的化学成分及其含量是：C为0.01～0.25wt％、Si为0.05～0.5wt％、Mn为0.5～1.8wt％、Ni为0.1～1.5wt％、Cu为0.1～1.5wt％、Als为0.001～0.06wt％、Nb为0.01～0.08wt％、Ti为0.01～0.08wt％、N为0.002～0.012wt％、B为0.0001～0.003wt％、P为＜0.010wt％、S为＜0.005wt％，其余为Fe及不可避免的杂质。制造工艺是：经炼钢后用Fe－Ti合金或者金属Ti进行脱氧，用Al线进行最终脱氧后加入B。再经连铸、均热、控制轧制、轧后弛豫控制、在线冷却即可。本发明可有效地降低焊接施工强度，提高制造效率，减少成本，节约资源和能源，适用于海洋平台、船舶军舰等大型结构、设备、设施等。The invention relates to a high-strength marine steel plate welded with large input energy and a manufacturing method thereof. The chemical composition and content of the slab are: C is 0.01-0.25wt%, Si is 0.05-0.5wt%, Mn is 0.5-1.8wt%, Ni is 0.1-1.5wt%, and Cu is 0.1-1.5wt%. , Als is 0.001-0.06wt%, Nb is 0.01-0.08wt%, Ti is 0.01-0.08wt%, N is 0.002-0.012wt%, B is 0.0001-0.003wt%, P is <0.010wt%, S is <0.005wt%, the rest is Fe and unavoidable impurities. The manufacturing process is: after steelmaking, Fe-Ti alloy or metal Ti is used for deoxidation, and Al wire is used for final deoxidation, and then B is added. After continuous casting, soaking, controlled rolling, relaxation control after rolling, and online cooling. The invention can effectively reduce the strength of welding construction, improve manufacturing efficiency, reduce costs, save resources and energy, and is suitable for large structures, equipment and facilities such as ocean platforms, ships and warships.
Description
Technical field:
The invention belongs to the Hi-Stren steel technical field.Relate in particular to a kind of can Chinese People's Anti-Japanese Military and Political College's heat input (the low-alloy high-strength marine steel plate and the manufacture method thereof of 150～600kJ/cm) welding.
Background technology
Storing abundant oil and Sweet natural gas around the ocean, as far back as the seventies in 20th century Britain and Norway just at North Sea regional development oil-gas field, along with the mankind to the continually developing of ocean, the large ocean production vessel has obtained developing rapidly.Ocean platform has the working conditions lotus to be carved, and safe reliability is strict, long service life, and characteristics such as maintaining difficulty have proposed very high requirement to the performance and the metallurgical quality of steel.
Ocean platform environment of living in is abominable, except that bearing gravity loading, also to consider the influence of wind loading, wave loading, current load, ice load, earthquake load etc., this has just determined the singularity of platform with steel, particularly the platform node requires high strength, high tenacity, antifatigue, corrosion-resistant, anti-lamellar tearing and good weldability with Z to steel, requires to take low P, low S on metallurgical quality, lowly is mingled with, measure of control such as crystal grain thinning.Especially for high-intensity Plate Steel, in order to improve welding efficiency, its welding property requires higher.
In the last thirty years, in order to improve the welding efficiency of heavy construction structure, guarantee the safe reliability of its use, large-line energy welding technique such as the single face union-melt weld that welding efficiency is high, electro-gas welding, electroslag welding are used in succession, this has come problem newly for traditional low alloy high strength steel strip, promptly weld the intensity and the toughness variation of coarse-grain heat affected zone (HAZ), and easily produce defectives such as welding cold cracking.Therefore, the HAZ flexible improves the focus and emphasis that becomes Hi-Stren steel large-line energy welding research and development.
The low-alloy high-strength ocean platform must fully be taken all factors into consideration mother metal and welded heat affecting zone tissue thereof with the structural transformation behavior and the control of steel under the large-line energy welding conditions forming process and control method thereof.Because the embrittlement of the welded heat affecting zone that softens and cause therefrom of the alligatoring of the welded heat affecting zone tissue under the big welding heat initial conditions, heat affected zone and the reduction of strength of joint are the subject matter in the Hi-Stren steel welding.
For this reason, a large amount of research and discoveries has been carried out, high-strength steel and manufacture method thereof under the large-line energy welding conditions that research and design make new advances in aspects such as domestic and international welded heat affecting zone structure property feature to Hi-Stren steel, austenite crystal growth dynamics.As steel series with high linear energy and low weld crack sensitivity and production method thereof " (ZL 02115877.0); " high-performance refractory weather-resisting building steel and production method thereof " (ZL 01133562.9); " unmodified high-toughness low-temp steel for high-energy line welding and production method thereof " (ZL 01128316.5); large-line energy welding high tenacity molten zinc corrosion resistant steel and production method (ZL01128476.5) thereof; " but Plate Steel and manufacture method of the welding of a kind of large-line energy " (CN 200510023216.0); " steel in use for soldering pressure pipe in hydraulic power station under large line energy and production method thereof " (CN 200510019165.4), " but the superstrength Plate Steel and the manufacture method thereof of large-line energy welding " (ZL 200410017255.5), as " steel series with high linear energy and low weld crack sensitivity and production method thereof " (ZL02115877.0), but also there are the following problems:
1, weld heat input is low, is generally 50～150kJ/cm;
2, the content of oxygen is not made clear and definite regulation, be difficult to improve the quality of products and weld heat input;
3, Si content is higher, because of the Si of high level can promote the formation of M/A, reduces the toughness of HAZ;
4, contain the expensive metal vanadium, the cost of product is improved;
5, the employing hardening and tempering process production that has, thereby the production process complexity, link is many, production cost is high, owing to adopt hardening and tempering process production, carbon content is unfavorable for anti-bigger heat input welding and realizes controlled rolling and controlled chilling and mechanical thermal treatment process (TMCP) in general than non-tempering process height;
6, contain rare earth element in the steel, rare earth element is very active element, is not easy control, and pollutes molten steel easily, is unfavorable for the raising of quality product.
Summary of the invention
The purpose of this invention is to provide a kind of chemical ingredients simple, be easy to control, production cost is low, the manufacture method of the simple soldering steel plate in high intensity in use for ocean by large line energy of technological process.Manufactured steel plates can be welded by large-line energy, the intensity height, and crack sensitivity is low, and low-temperature flexibility is good.
For achieving the above object, the technical solution adopted in the present invention is: the chemical ingredients and the content thereof of this slab are: C be 0.01～0.25wt%, Si be 0.05～0.5wt%, Mn be 0.5～1.8wt%, Ni be 0.1～1.5wt%, Cu be 0.1～1.5wt%, Als be 0.001～0.06wt%, Nb be 0.01～0.08wt%, Ti be 0.01～0.08wt%, N be 0.002～0.012wt%, B be 0.0001～0.003wt%, P for＜0.010wt%, S be＜0.005wt%, all the other are Fe and unavoidable impurities;
Its manufacturing process is: adopt converter or electric arc furnace that molten iron or steel scrap or molten iron are carried out refining with steel scrap after making steel, refinery practice is the oxygen level of measuring earlier in the molten steel, oxygen level in the maintenance molten steel is at 10～600ppm, carry out deoxidation with Fe-Ti alloy or metal Ti, carry out final deoxidation with the Al line again.According to the chemical ingredients and the content thereof of slab, add B after the final deoxidation, carry out continuous casting, hot rolling then.
Hot rolling technology is: earlier strand is heated to 1100～1320 ℃, hot rolling is carried out in soaking after 2～4 hours again, and rolling is 20～100mm Plate Steel, rolls back control relaxation 5～300s, gets final product with online cooling of the speed of cooling of 1～30 ℃/s then.
Because the present invention adopts the microalloy control techniques of science and advanced TMCP technology, therefore have chemical ingredients simple, be easy to control, low, the characteristic of simple process of production cost.The tensile strength of the marine steel plate of manufacturing is 600～1000MPa, can weld under the heat input of 150～600kJ/cm, need not heat-treat after the welding, and the ballistic work of welded H AZ is not less than 2/3 of mother metal ballistic work.So steel plate welding quality height, crack sensitivity is low, and low-temperature flexibility is good, and the tensile strength height can reduce welding procedure intensity effectively, improves and makes efficient, reduces manufacturing cost, economizes on resources and the energy.
Therefore, the marine steel plate of manufacturing can be widely used in large scale structure, equipment, facilities etc. such as ocean platform, boats and ships warship, especially is fit to various welding such as union-melt weld, gas guarantor weldering, electro-gas welding, electroslag welding.
Embodiment
Below in conjunction with embodiment, the present invention is further described:
Embodiment 1
A kind of soldering steel plate in high intensity in use for ocean by large line energy and manufacture method thereof.The chemical ingredients and the content thereof of this slab are: C be 0.04～0.08wt%, Si be 0.2～0.4wt%, Mn be 1.2～1.8wt%, Ni be 0.2～0.4wt%, Cu be 0.4～0.8wt%, Als be 0.03～0.05wt%, Nb be 0.03～0.07wt%, Ti be 0.01～0.05wt%, N be 0.006～0.010wt%, B be 0.0010～0.0020wt%, P for＜0.009wt%, S be＜0.005wt%, all the other are Fe and unavoidable impurities.
Its manufacturing process is: with converter molten iron is carried out refining after steel-making, refinery practice is first with the oxygen level in the quick Determining oxygen probe mensuration steel, and the oxygen level in the maintenance molten steel is carried out deoxidation at 500ppm with the Fe-Ti alloy, carries out final deoxidation with the Al line again; According to the chemical ingredients and the content thereof of strand, add B after the final deoxidation, carry out continuous casting, hot rolling then.Slab thickness is 210mm.
Its hot rolling technology is: earlier strand is heated to 1150～1250 ℃, hot rolling is carried out in soaking after 2～3 hours again, and rolling is the thick steel plate of 40mm.Roll back control relaxation 5～10s, get final product with the online cooling of the speed of cooling of 8～15 ℃/s then.
Present embodiment manufactured steel plates tensile strength is 550MPa, can weld under the heat input of 400～600kJ/cm, need not heat-treat after the welding, and the ballistic work of welded H AZ is not less than 2/3 of mother metal ballistic work.
Embodiment 2
A kind of soldering steel plate in high intensity in use for ocean by large line energy and manufacture method thereof.The chemical ingredients and the content thereof of this slab are: C be 0.03～0.07wt%, Si be 0.2～0.4wt%, Mn be 1.0～1.4wt%, Ni be 0.3～0.5wt%, Cu be 0.1～1.5wt%, Als be 0.04～0.06wt%, Nb be 0.02～0.06wt%, Ti be 0.01～0.05wt%, N be 0.002～0.010wt%, B be 0.001～0.003wt%, P for＜0.010wt%, S be＜0.005wt%, all the other are Fe and unavoidable impurities.
Its manufacturing process is: adopt converter that molten iron and steel scrap are carried out refining after steel-making, refinery practice is earlier with the oxygen level in the quick Determining oxygen probe mensuration steel, oxygen level in the maintenance molten steel is carried out deoxidation at 300ppm with the Fe-Ti alloy, carries out final deoxidation with the Al line again.According to the chemical ingredients and the content thereof of slab, add B after the final deoxidation, carry out continuous casting, hot rolling then.The strand thickness of slab is 230mm.
Hot rolling technology is: earlier strand is heated to 1200～1300 ℃, hot rolling is carried out in soaking after 2.5～3.5 hours again, and rolling is the thick steel plate of 50mm.Roll back control relaxation 10～20s, get final product with the online cooling of the speed of cooling of 10～15 ℃/s then.
The tensile strength of present embodiment manufactured steel plates is 520MPa, can weld under the heat input of 400～600kJ/cm, can not heat-treat after the welding.The ballistic work of welded H AZ is not less than 2/3 of mother metal ballistic work.
Embodiment 3
A kind of soldering steel plate in high intensity in use for ocean by large line energy and manufacture method thereof.The chemical ingredients and the content thereof of this slab are: C be 0.03～0.05wt%, Si be 0.1～0.3wt%, Mn be 1.3～1.5wt%, Ni be 0.4～0.5wt%, Cu be 0.4～0.8t%, Als be 0.01～0.05wt%, Nb be 0.02～0.06wt%, Ti be 0.02～0.04wt%, N be 0.006～0.010wt%, B be 0.0010～0.0025wt%, P for＜0.009wt%, S be＜0.004wt%, all the other are Fe and unavoidable impurities.
Its manufacturing process is: adopt converter that steel scrap is carried out refining after steel-making, refinery practice is to measure oxygen level in the steel with quick Determining oxygen probe earlier, and the oxygen level in the maintenance molten steel is carried out deoxidation at 400ppm with metal Ti, carries out final deoxidation with the Al line again.According to the chemical ingredients and the content thereof of slab, add B after the final deoxidation, carry out continuous casting, hot rolling then.The strand thickness of slab is 250mm.
Hot rolling technology is: earlier strand is heated to 1220～1280 ℃, hot rolling is carried out in soaking after 2～3 hours again, and rolling is the thick steel plate of 60mm.Roll back control relaxation 15～30s, get final product with online cooling of the speed of cooling of 10～20 ℃/s then.
The tensile strength of present embodiment manufactured steel plates is 550MPa, can weld under the heat input of 400～600kJ/cm, can not heat-treat after the welding.The ballistic work of welded H AZ is not less than 2/3 of mother metal ballistic work.
This embodiment have chemical ingredients and technology simple, be easy to control, characteristics that production cost is low.Manufactured steel plates can be widely used in large scale structure, equipment, facilities etc. such as ocean platform, boats and ships warship, be fit to the various welding of 400～600kJ/cm large-line energies inputs such as union-melt weld, gas guarantor weldering, electro-gas welding, electroslag welding, so the welding quality height, crack sensitivity is low, low-temperature flexibility good, tensile strength is high, can reduce welding procedure intensity effectively, improve and make efficient, reduce manufacturing cost, economize on resources and the energy.
Claims (3)
1, a kind of manufacture method of soldering steel plate in high intensity in use for ocean by large line energy, the chemical ingredients and the content thereof that it is characterized in that this slab are: C be 0.01～0.25wt%, Si be 0.05～0.5wt%, Mn be 0.5～1.8wt%, Ni be 0.1～1.5wt%, Cu be 0.1～1.5wt%, Als be 0.001～0.06wt%, Nb be 0.01～0.08wt%, Ti be 0.01～0.08wt%, N be 0.002～0.012wt%, B be 0.0001～0.003wt%, P for＜0.010wt%, S be＜0.005wt%, all the other are Fe and unavoidable impurities;
Its manufacturing process is: adopt converter or electric arc furnace that molten iron or steel scrap or molten iron are carried out refining with steel scrap after making steel, refinery practice is the oxygen level of measuring earlier in the molten steel, oxygen level in the maintenance molten steel is at 10～600ppm, carry out deoxidation with Fe-Ti alloy or metal Ti, carry out final deoxidation with the Al line again, according to the chemical ingredients and the content thereof of slab, add B after the final deoxidation, carry out continuous casting, hot rolling then.
2, the manufacture method of soldering steel plate in high intensity in use for ocean by large line energy according to claim 1, it is characterized in that described hot rolling technology is: earlier strand is heated to 1100～1320 ℃, hot rolling is carried out in soaking after 2～4 hours again, rolling is 20～100mm Plate Steel, roll back control relaxation 5～300s, cool off so that the speed of cooling of 1～30 ℃/s is online then.
3, according to the soldering steel plate in high intensity in use for ocean by large line energy of the manufacture method manufacturing of claim 1 or 2 described soldering steel plate in high intensity in use for ocean by large line energy.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100521352A CN100523255C (en) | 2007-05-10 | 2007-05-10 | Soldering steel plate in high intensity in use for ocean by large line energy, and manufacturing method |
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| CNB2007100521352A CN100523255C (en) | 2007-05-10 | 2007-05-10 | Soldering steel plate in high intensity in use for ocean by large line energy, and manufacturing method |
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| CN101050505A true CN101050505A (en) | 2007-10-10 |
| CN100523255C CN100523255C (en) | 2009-08-05 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985719A (en) * | 2010-11-01 | 2011-03-16 | 武汉科技大学 | Composite additive for smelting high heat input welding low-alloy steel and using method thereof |
| CN102031441A (en) * | 2010-11-01 | 2011-04-27 | 武汉科技大学 | Complex additive for spheroidizing and dispersing sulfides in steel and use method thereof |
| CN102363238A (en) * | 2011-08-15 | 2012-02-29 | 南京钢铁股份有限公司 | A Submerged Arc Welding Process for Thick Plates Used in Low Temperature Offshore Engineering |
| CN103114241A (en) * | 2013-02-25 | 2013-05-22 | 江苏省沙钢钢铁研究院有限公司 | Hot-rolled steel plate with yield strength of 460MPa and capable of being welded by large heat input |
| CN106086650A (en) * | 2016-07-25 | 2016-11-09 | 江阴兴澄特种钢铁有限公司 | A kind of can the polar region ship plate and preparation method thereof of Large Heat Input Welding |
| CN106191659A (en) * | 2016-08-19 | 2016-12-07 | 山东钢铁股份有限公司 | A kind of can the steel plate for ocean engineering of Large Heat Input Welding and manufacture method thereof |
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| EP1337678B1 (en) * | 2000-12-01 | 2007-10-03 | Posco | Steel plate to be precipitating tin+mns for welded structures, method for manufacturing the same and welding fabric using the same |
| CN1302144C (en) * | 2004-03-29 | 2007-02-28 | 宝山钢铁股份有限公司 | Superhigh strength thick steel plate capable of large-line energy welding and its manufacturing method |
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- 2007-05-10 CN CNB2007100521352A patent/CN100523255C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101985719A (en) * | 2010-11-01 | 2011-03-16 | 武汉科技大学 | Composite additive for smelting high heat input welding low-alloy steel and using method thereof |
| CN102031441A (en) * | 2010-11-01 | 2011-04-27 | 武汉科技大学 | Complex additive for spheroidizing and dispersing sulfides in steel and use method thereof |
| CN102031441B (en) * | 2010-11-01 | 2012-11-28 | 武汉科技大学 | Complex additive for spheroidizing and dispersing sulfides in steel and use method thereof |
| CN102363238A (en) * | 2011-08-15 | 2012-02-29 | 南京钢铁股份有限公司 | A Submerged Arc Welding Process for Thick Plates Used in Low Temperature Offshore Engineering |
| CN103114241A (en) * | 2013-02-25 | 2013-05-22 | 江苏省沙钢钢铁研究院有限公司 | Hot-rolled steel plate with yield strength of 460MPa and capable of being welded by large heat input |
| CN106086650A (en) * | 2016-07-25 | 2016-11-09 | 江阴兴澄特种钢铁有限公司 | A kind of can the polar region ship plate and preparation method thereof of Large Heat Input Welding |
| CN106191659A (en) * | 2016-08-19 | 2016-12-07 | 山东钢铁股份有限公司 | A kind of can the steel plate for ocean engineering of Large Heat Input Welding and manufacture method thereof |
| CN106191659B (en) * | 2016-08-19 | 2018-07-24 | 山东钢铁股份有限公司 | It is a kind of can Large Heat Input Welding steel plate for ocean engineering and its manufacturing method |
| CN107217216A (en) * | 2017-06-05 | 2017-09-29 | 苏州双金实业有限公司 | A kind of environmental protection easily welding alloy steel |
| CN117802413A (en) * | 2024-03-01 | 2024-04-02 | 日钢营口中板有限公司 | A 400MPa grade TMCP steel plate with excellent welding performance and its production method |
| CN117802413B (en) * | 2024-03-01 | 2024-05-03 | 日钢营口中板有限公司 | 400 MPa-level TMCP steel plate with excellent welding performance and production method thereof |
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| CN100523255C (en) | 2009-08-05 |
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