CN109868416A - A kind of production technology of low cost hot dip galvanized dual phase steel DP590 - Google Patents
A kind of production technology of low cost hot dip galvanized dual phase steel DP590 Download PDFInfo
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Abstract
The present invention provides the production technology of inexpensive hot dip galvanized dual phase steel DP590 a kind of, after including the following steps: converter smelting molten steel, by RH furnace and LF furnace to molten steel desulfurizing decarburization, after molten steel alloying reaches target component demand, is cast into base into continuous casting workshop；Ejection temperature is 1185~1260 DEG C in course of hot rolling, finishing temperature is 860 DEG C~900 DEG C；830 DEG C of annealing temperature in cold-rolled process, middle temperature transformation area are set as 450 DEG C~470 DEG C.Production technology of the present invention has abandoned the technique for being as cold as martensitic transformation temperature in traditional technology fastly, but it is as cold as middle temperature transformation temperature fastly using first, then by martensitic traoformation control cooling stage after plating, it may be assumed that heating+slow cooling+middle temperature transformation+coating+martensitic traoformation (cooling after plating)+finishing+plating posttreatment+technique batched；It can get the hot galvanizing DP590 of low cost, great surface quality, favorable comprehensive mechanical property using production technology of the present invention.
Description
Technical field
The present invention relates to automobile steel technical fields, more particularly to the life of inexpensive hot dip galvanized dual phase steel DP590 a kind of
Production. art.
Background technique
The rapid development of in the 21st century, Domestic Automotive Industry, China become the first in the world automobile production and country of consumption, with
The development of automobile technology, energy-saving and environmental protection, safety have become the theme of modern automobile industry development, and the experimental results show
Automotive light weight technology is the main technological route for realizing this target.Dual phase steel is with its low yield strength ratio, good intensity and ductility
The advantages that cooperation, develops into a kind of good high-strength novel Punching Steel of formability, becomes the important of present automobile steel
Component part.
Hot dip galvanized dual phase steel is the important raw material in auto manufacturing, is typical advanced automobile steel, what is advocated
There is critical role in automotive light weight technology.It is mainly used in automobile structure, energy-saving and emission-reduction can be played, reduce car body weight
Purpose can also improve corrosion resistance, improve intensity and safety, be pursued by domestic and international major automaker.Dual phase steel
With high initial manufacture hardening rate, no remarkable yield extension, high uniform elongation, low yield strength ratio, good BH etc.
Performance characteristics, in addition the corrosion resistance after hot galvanizing, makes hot-galvanized steel be widely used in middle-to-high end car structural member, such as: reinforcing prop/
Reinforcer etc. on center pillar inner panel, left/right A column.The hot dip galvanized dual phase steel of 590MPa rank has both high-intensitive plasticity and high corrosion-resistant,
It is widely applied with good comprehensive mechanical property, so production low cost hot galvanizing DP590 can greatly improve enterprise
Industry benefit simultaneously provides high-quality raw material for user vehicle.
Hot galvanizing DP590 has obtained significant progress as the typical steel grade in dual phase steel family in auto manufacturing
And extensive use, production hot galvanizing DP590 need to combine surface platability and mechanical property, production difficulty is larger, is based on
Manufacturing method is probed into and expanded to the characteristic of above-mentioned hot dip galvanized dual phase steel all in effort both at home and abroad, has lower production to obtain
The hot dip galvanized dual phase steel of cost and best tissue and excellent comprehensive performance.
Summary of the invention
Technical assignment of the invention is to be directed to the above the deficiencies in the prior art, and provide a kind of inexpensive hot dip galvanized dual phase steel
The production technology of DP590.
The technical solution adopted by the present invention to solve the technical problems is: a kind of low cost hot dip galvanized dual phase steel DP590
Production technology includes the following steps:
After converter smelting molten steel, by RH furnace and LF furnace to molten steel desulfurizing decarburization, molten steel alloying, which reaches target component, to be needed
After asking, base is cast into continuous casting workshop；
Ejection temperature is 1185~1260 DEG C in course of hot rolling, finishing temperature is 860 DEG C~900 DEG C；
830 DEG C of annealing temperature in cold-rolled process, middle temperature transformation area are set as 450 DEG C~470 DEG C, 460 DEG C of target value.
Hot-rolled process should ensure that heating time is abundant, and temperature is uniform, controls heating furnace oven cavity atmosphere, reduces iron oxide to the greatest extent
The generation of skin.
Further, by percentage to the quality, the target component of molten steel is C:0.065~0.08%；Mn:1.48~
1.60%；Si:0~0.05%；Cr:0.35~0.50%；Mo:0.14~0.20%；Nb:0.0080~0.0180%；Al:
0.03~0.06%；P :≤0.025%；S :≤0.010%；O :≤0.0050%；N :≤0.0050%；Surplus is iron and can not
The impurity avoided.
Further, by percentage to the quality, the target component of Si is preferably 0.01% in molten steel.
Further, the production technology includes following process, molten iron pretreatment → converter smelting → external refining → company
→ pickling, cold rolling → continuous annealing, zinc-plated → plating posttreatment → volume cool down → are batched in casting → heating → 1700mm rolling → control
→ sampling → is taken to examine → pack factory；Specific steps are as follows:
1. molten iron pre-process: using magnesium-based pulverized limestone carry out molten iron desulfurization, by molten steel sulfur content by 0.03 take off to
0.003%；Pulvis blowing amount is about 0.6kg/ tons, and molten iron temperature loses temperature drop by 1320 DEG C to 1300 DEG C；
2. converter smelting: utilizing oxygen top and bottom combined blown converter, part steel scrap, scrap ratio 15% is added；
Control blowing end point, the hit rate of guarantee carbon temperature, blowing end point carbon content 0.035%, 1680 DEG C of temperature, free oxygen
600ppm；
In tapping process, the lower quantity of slag is controlled, it is desirable that be ton steel 7kg slag；And the deoxidation that aluminium carries out molten steel is added, low-carbon is added
Manganese, low-carbon ferrochromium, ferro-molybdenum in middle manganese, low silicon, complete partially-alloyed work；
3.LF refining: be powered 10min after arriving at a station, and slag making deoxidation material, arc-covering slag operation, strong BOTTOM ARGON BLOWING gas mixing are added immediately
It mixes, after white slag is formed, carries out the alloying of molten steel, and keep reducing atmosphere to bull ladle, the retention time is no less than 20 minutes；
Well manganese iron, molybdenum-iron, ferrocolumbium microalloying is added by control composition afterwards in deoxidation, by composition adjustment to target；
LF refining whole-process control 0.2~0.3Mpa of argon pressure, prevents molten steel is exposed from causing secondary oxidation.Molten steel temperature leaving from station
Degree is 1600 DEG C；
4. continuous casting: big 1585~1595 DEG C of the first furnace temperature of packet, company pour 1575~1585 DEG C, and the control of intermediate superheating degree is 25
~35 DEG C, 1.0~1.3m/min of pulling rate, the casting of strict implement total process protective controls the nitrogen pick-up of continuous casting process；
5. hot rolling: heating is heated using quadrangle burner recuperative soaking pit, 1230 DEG C of heating temperature, soaking time >=12
Hour；
Rolling is using 800 blooming mills, 650 finishing mills, wherein 1050 DEG C of breaking down temperature >, 960 DEG C of tandem rolling temperature >,
Finishing temperature is 860~900 DEG C；
6. cold rolling: cold rolling cooling section is annealed using middle temperature transformation.
Further, each alloy amount is added in step 2 are as follows: low-carbon mid-manganese alloy: 12kg/ tons, low silicon mid-manganese alloy: 7kg/
Ton；Low-carbon ferrochromium alloy: 8kg/ tons；Ferro-molybdenum: 4kg/ tons.
Further, the slag making deoxidation material in step 3 is lime and deoxidation aluminium skimmings, and lime adding amount is 10kg/ tons, is taken off
Oxygen aluminium skimmings additional amount is 1kg/ tons.
Further, due to the formation of white slag, the oxygen content in steel can be controlled, before continuous casting, the sulfur content in molten steel is most
Low reachable 0.0020%.
After traditional hot galvanizing DP590 production technology is cooling+finishing+plating after heating+slow cooling+martensitic traoformation+coating+plating
Phase transformation technique before the plating for handling+batching, production technology of the present invention has been abandoned is as cold as martensitic traoformation fastly in traditional technology
The technique of temperature, but using first middle temperature transformation temperature is as cold as fastly, bainite transformation area is rationally avoided, then by martensitic traoformation
After control cooling stage after plating, i.e. heating+slow cooling+middle temperature transformation+coating+martensitic traoformation (cooling after plating)+finishing+plating
The technique managed+batched；
Production technology of the present invention can reduce rapid cooling power of fan, play energy conservation and environmental protection purpose；It can also reduce
Coating unevenness problem caused by causing transverse temperature uneven due to edge chilling；Surface quality, band can be improved in this method
Steel can be spread in alloying elements such as C, Mn in the ferrite in middle temperature transformation area into the austenite not changed, and it is pure to increase ferrite
Cleanliness obtains better elongation after fracture, with the increase of austenite inner alloy element, improves the residual of before plating equalizer section
Remaining austenite harden ability can more effectively control cost to reduce original alloying component in base steel；Pass through control simultaneously
The DP590 of phase transformation avoids the martensite being initially formed and deteriorates mechanical property by the tempering of zinc-plated equalizer section, ensure that items
Performance indicator is stablized；
The to sum up production technology of the hot dip galvanized dual phase steel DP590 through the invention, can obtain low cost, high surface
The hot galvanizing DP590 of quality, favorable comprehensive mechanical property.
Detailed description of the invention
Fig. 1 traditional processing technology and process route chart of the present invention；
The metallographic structure micrograph of Fig. 2 traditional processing technology product；
The metallographic structure micrograph of production technology described in Fig. 3 embodiment of the present invention 3.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
The present invention provides the production technology of inexpensive hot dip galvanized dual phase steel DP590 a kind of, the mesh of the dual phase steel DP590
Marking ingredient is C:0.065~0.08%；Mn:1.48~1.60%；Si:0~0.05%；Cr:0.35~0.50%；Mo:0.14
~0.20%；Nb:0.0080~0.0180%；Al:0.03~0.06%；P :≤0.025%；S :≤0.010%；O :≤
0.0050%；N :≤0.0050%；Surplus is iron and inevitable impurity；
Its production technology includes following scheme: molten iron pretreatment → converter smelting → external refining → continuous casting → heating →
1700mm rolling → control cool down → batches → and pickling, cold rolling → continuous annealing, zinc-plated → plating posttreatment → batch → sample →
Inspection → packaging factory；Specific step is as follows:
1. molten iron pre-process: using magnesium-based pulverized limestone carry out molten iron desulfurization, by molten steel sulfur content by 0.03 take off to
0.003%；Pulvis blowing amount is about 0.6kg/ tons, and molten iron temperature loses temperature drop by 1320 DEG C to 1300 DEG C；
2. converter smelting: utilizing oxygen top and bottom combined blown converter, part steel scrap, scrap ratio 15% is added；Control blowing is eventually
Point guarantees that the hit rate of carbon temperature, blowing end point carbon content 0.035%, prevent a little to blow, mistake by 1680 DEG C of temperature, free oxygen 600ppm
It blows, prevents Molten Steel over-oxidation；
In tapping process, the lower quantity of slag is controlled, it is desirable that be ton steel 7kg slag, prevent returning in refining LF furnace slag making sweetening process
Silicon, and the deoxidation that aluminium carries out molten steel is added, manganese (12kg/ tons) in low-carbon, manganese (7kg/ tons), low-carbon ferrochromium in low silicon is added
(8kg/ tons), molybdenum-iron (4kg/ tons) alloy, completes partially-alloyed work；
3.LF refining: be powered 10min after arriving at a station, and slag making deoxidation material, specially lime 10kg/ tons and deoxidation are added immediately
1kg/ tons of aluminium skimmings, arc-covering slag operation, the stirring of strong argon bottom-blowing carry out the alloying of molten steel after white slag is formed, and keep also Primordial Qi
To bull ladle, the retention time is no less than 20 minutes atmosphere；
After deoxidation is good, manganese iron, the molybdenum-iron, ferrocolumbium microalloying being added by control composition, by composition adjustment to mesh
Mark, due to the formation of white slag, can control the oxygen content in steel, and the sulfur content in molten steel is minimum up to 0.0020%；
LF refining whole-process control 0.2~0.3Mpa of argon pressure, prevents molten steel is exposed from causing secondary oxidation.Molten steel temperature leaving from station
Degree is 1600 DEG C；
4. continuous casting: big 1585~1595 DEG C of the first furnace temperature of packet even pours 1575~1585 DEG C, and the control of intermediate superheating degree is 25
~35 DEG C, 1.0~1.3m/min of pulling rate, the casting of strict implement total process protective controls the nitrogen pick-up of continuous casting process；
5. hot rolling: heating is heated using quadrangle burner recuperative soaking pit, 1230 DEG C of heating temperature, soaking time >=12
Hour；
Rolling is 1185~1260 DEG C using 800 blooming mills, 650 finishing mills, ejection temperature, wherein breaking down temperature >
1050 DEG C, 960 DEG C of tandem rolling temperature >, finishing temperature is 860~900 DEG C, reduces mill table cooling water flow, steel is avoided to open
It splits；
6. cold rolling: cold rolling cooling section is annealed using middle temperature transformation, and 830 DEG C of annealing temperature, middle temperature transformation area is set as 450 DEG C
~470 DEG C, 460 DEG C of target value.
Embodiment 1
After converter smelting molten steel, by RH furnace and LF furnace to molten steel desulfurizing decarburization, molten steel alloying reaches target component, C:
0.065%；Mn:1.58%；Si:0.03%；Cr:0.45%；Mo:0.15%；Nb:0.0140%；Al:0.03%；P:
0.015%；S:0.0020%；O:0.0020%；N:0.0015%；Surplus is iron and inevitable impurity.
Wherein, in continuous casting working procedure, big to wrap 1585 DEG C of the first furnace temperature, even pour 1575 DEG C, the control of intermediate superheating degree is 25 DEG C,
Pulling rate 1.0m/min；
In hot-rolled process, 1230 DEG C of heating temperature, 12 hours of soaking time；Ejection temperature is 1190 DEG C, wherein breaking down
1060 DEG C of temperature, 980 DEG C of tandem rolling temperature, finishing temperature is 860 DEG C；
In cold rolling process, middle temperature transformation annealing, 830 DEG C of annealing temperature, middle temperature transformation area is set as 460 DEG C.
Embodiment 2
After converter smelting molten steel, by RH furnace and LF furnace to molten steel desulfurizing decarburization, molten steel alloying reaches target component, even
Before casting, molten steel composition is C:0.072%；Mn:1.55%；Si:0.02%；Cr:0.42%；Mo:0.16%；Nb:
0.0140%；Al:0.03%；P:0.015%；S:0.0020%；O:0.0020%；N:0.0015%；Surplus is iron and can not
The impurity avoided.
Wherein, in continuous casting working procedure, big to wrap 1590 DEG C of the first furnace temperature, even pour 1580 DEG C, the control of intermediate superheating degree is 30 DEG C,
Pulling rate 1.2m/min；
In hot-rolled process, 1230 DEG C of heating temperature, 13 hours of soaking time；Ejection temperature is 1220 DEG C, wherein breaking down
1080 DEG C of temperature, 970 DEG C of tandem rolling temperature, finishing temperature is 880 DEG C；
In cold rolling process, middle temperature transformation annealing, 830 DEG C of annealing temperature, middle temperature transformation area is set as 460 DEG C.
Embodiment 3
After converter smelting molten steel, by RH furnace and LF furnace to molten steel desulfurizing decarburization, molten steel alloying reaches target component, even
Before casting, molten steel composition is C:0.075%；Mn:1.50%；Si:0.01%；Cr:0.40%；Mo:0.17%；Nb:
0.0140%；Al:0.03%；P:0.015%；S:0.0020%；O:0.0020%；N:0.0015%；Surplus is iron and can not
The impurity avoided.
Wherein, in continuous casting working procedure, big to wrap 1595 DEG C of the first furnace temperature, even pour 1585 DEG C, the control of intermediate superheating degree is 32 DEG C,
Pulling rate 1.3m/min；
In hot-rolled process, 1230 DEG C of heating temperature, 14 hours of soaking time；Ejection temperature is 1250 DEG C, wherein breaking down
1070 DEG C of temperature, 980 DEG C of tandem rolling temperature, finishing temperature is 900 DEG C；
In cold rolling process, middle temperature transformation annealing, 830 DEG C of annealing temperature, middle temperature transformation area is set as 460 DEG C.
Traditional hot galvanizing DP590 production technology uses phase transformation technique before the plating of martensitic traoformation+coating, the embodiment of the present invention
Middle temperature transformation+coating+martensitic traoformation the production technology, the two process route chart is as shown in Figure 1, wherein 1. number technique is
Traditional handicraft, 2. number technique is technique described in embodiment.
The two product microscopic structure comparative situation is as shown in table 1, it can be seen that the microscopic structure obtained using traditional handicraft
For a large amount of bainites+a small amount of martensite, it can only guarantee the performance of material by the addition of alloy.Described in the embodiment of the present invention at
Division technique, hot rolling technology, cold-rolling process can obtain more martensites, to obtain higher intensity, make up zinc-plated producing line
The bad problem of mechanical property caused by capacity of equipment is insufficient guarantees that material has good mechanical property；It is produced using traditional handicraft
The metallographic structure micrographs of product as shown in Fig. 2, using 3 handicraft product of the embodiment of the present invention metallographic structure micrograph such as Fig. 3 institute
Show, since Si content is affected to product surface, it can be seen that under the conditions of the Si content of embodiment 3, product surface is more excellent.
1 tissue contrast's situation of table
The comparison of handicraft product mechanical property mean value described in traditional handicraft and embodiment is as shown in table 2:
2 mechanical property average value of table and traditional handicraft comparative situation
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (7)
1. a kind of production technology of low cost hot dip galvanized dual phase steel DP590, characterized by the following steps:
After converter smelting molten steel, by RH furnace and LF furnace to molten steel desulfurizing decarburization, after molten steel alloying reaches target component demand,
Base is cast into continuous casting workshop；
Ejection temperature is 1185~1260 DEG C in course of hot rolling, finishing temperature is 860 DEG C~900 DEG C；
830 DEG C of annealing temperature in cold-rolled process, middle temperature transformation area are set as 450 DEG C~470 DEG C.
2. the production technology of inexpensive hot dip galvanized dual phase steel DP590 according to claim 1 a kind of, it is characterised in that: with
The target component of mass percent meter, molten steel is C:0.065~0.08%；Mn:1.48~1.60%；Si:0~0.05%；
Cr:0.35~0.50%；Mo:0.14~0.20%；Nb:0.0080~0.0180%；Al:0.03~0.06%；P :≤
0.025%；S :≤0.010%；O :≤0.0050%；N :≤0.0050%；Surplus is iron and inevitable impurity.
3. the production technology of inexpensive hot dip galvanized dual phase steel DP590 according to claim 1 a kind of, it is characterised in that: with
Mass percent meter, the target component of the Si in molten steel are 0.01%.
4. the production technology of inexpensive hot dip galvanized dual phase steel DP590 according to claim 1 or 2 or 3 a kind of, the production
Technique includes following process, molten iron pretreatment → converter smelting → external refining → continuous casting → heating → 1700mm rolling → control
Cool down → batch → pickling, cold rolling → continuous annealing, zinc-plated → plating posttreatment → batch → sampling → and examine → pack factory；Its
It is characterized in that: specific steps are as follows:
1) molten iron pre-processes: carrying out the desulfurization of molten iron using magnesium-based pulverized limestone, molten steel sulfur content is taken off by 0.03 to 0.003%；
Pulvis blowing amount is about 0.6kg/ tons, and molten iron temperature loses temperature drop by 1320 DEG C to 1300 DEG C；
2) converter smelting: utilizing oxygen top and bottom combined blown converter, and part steel scrap, scrap ratio 15% is added；
Control blowing end point, the hit rate of guarantee carbon temperature, blowing end point carbon content 0.035%, 1680 DEG C of temperature, free oxygen
600ppm；
In tapping process, the lower quantity of slag is controlled, it is desirable that be ton steel 7kg slag；And the deoxidation that aluminium carries out molten steel is added, it is added in low-carbon
Manganese, low-carbon ferrochromium, ferro-molybdenum in manganese, low silicon, complete partially-alloyed work；
3) LF refining: be powered 10min after arriving at a station, and slag making deoxidation material, arc-covering slag operation are added immediately, and strong argon bottom-blowing stirs, to
After white slag is formed, the alloying of molten steel is carried out, and keeps reducing atmosphere to bull ladle, the retention time is no less than 20 minutes；
Well manganese iron, molybdenum-iron, ferrocolumbium microalloying is added by control composition afterwards in deoxidation, by composition adjustment to target；
LF refining whole-process control 0.2~0.3Mpa of argon pressure, prevents molten steel is exposed from causing secondary oxidation.Liquid steel temperature leaving from station is
1600℃；
4) continuous casting: big 1585~1595 DEG C of the first furnace temperature of packet, company pour 1575~1585 DEG C, and the control of intermediate superheating degree is 25~35
DEG C, 1.0~1.3m/min of pulling rate, strict implement total process protective casting controls the nitrogen pick-up of continuous casting process；
5) hot rolling: heating is heated using quadrangle burner recuperative soaking pit, and 1230 DEG C of heating temperature, soaking time >=12 are small
When；
Rolling is using 800 blooming mills, 650 finishing mills, wherein 1050 DEG C of breaking down temperature >, 960 DEG C of tandem rolling temperature >, finish to gauge
Temperature is 860~900 DEG C；
6) cold rolling: cold rolling cooling section is annealed using middle temperature transformation.
5. the production technology of inexpensive hot dip galvanized dual phase steel DP590 according to claim 4 a kind of, it is characterised in that: institute
Stating and each alloy amount is added in step 2) is low-carbon mid-manganese alloy: 12kg/ tons, low silicon mid-manganese alloy: 7kg/ tons；Low-carbon ferrochromium closes
Gold: 8kg/ tons；Ferro-molybdenum: 4kg/ tons.
6. the production technology of inexpensive hot dip galvanized dual phase steel DP590 according to claim 4 a kind of, it is characterised in that: institute
Stating the slag making deoxidation material in step 3) is lime and deoxidation aluminium skimmings, and lime adding amount is 10kg/ tons, and deoxidation aluminium skimmings additional amount is
1kg/ tons.
7. the production technology of inexpensive hot dip galvanized dual phase steel DP590 according to claim 4 a kind of, it is characterised in that: even
Sulfur content before casting in molten steel is minimum up to 0.0020%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281062A (en) * | 2020-10-22 | 2021-01-29 | 本钢板材股份有限公司 | 1000 MPa-grade low-cost hot-galvanized dual-phase steel and preparation method thereof |
| CN115612934A (en) * | 2022-10-19 | 2023-01-17 | 鞍钢蒂森克虏伯汽车钢有限公司 | 590 MPa-level high-formability hot-dip galvanized dual-phase steel plate and preparation method thereof |
| WO2023092565A1 (en) * | 2021-11-29 | 2023-06-01 | 广东中晟电磁科技股份有限公司 | 35wd1600 electrical steel for new energy vehicle drive motor and production method therefor |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348885A (en) * | 2008-09-11 | 2009-01-21 | 北京科技大学 | 1000MPa grade cold rolling hot dip galvanizing two-phase steel and manufacturing method thereof |
| CN101646797A (en) * | 2007-03-30 | 2010-02-10 | 杰富意钢铁株式会社 | High-strength hot-dip zinc-coated steel sheet |
| CN101939457A (en) * | 2008-02-08 | 2011-01-05 | 杰富意钢铁株式会社 | High strength galvanized steel sheet with excellent formability and method for manufacturing the same |
| CN102828119A (en) * | 2011-06-14 | 2012-12-19 | 鞍钢股份有限公司 | High-bending 980 MPa-grade cold-rolled dual-phase steel and preparation process thereof |
| CN105369135A (en) * | 2015-12-22 | 2016-03-02 | 武汉钢铁(集团)公司 | 450 MPa-level zinc-plated dual-phase steel for sedan and production method thereof |
| CN105401071A (en) * | 2015-12-22 | 2016-03-16 | 武汉钢铁(集团)公司 | Galvanized dual-phase steel for 500 MPa class car and production method |
| CN105441805A (en) * | 2015-12-22 | 2016-03-30 | 武汉钢铁(集团)公司 | Galvanized dual-phase steel for 800MPa grade cars and production method |
| CN105543674A (en) * | 2015-12-18 | 2016-05-04 | 东北大学 | Method for manufacturing cold-rolled ultrahigh-strength dual-phase steel with high local forming performance |
| CN106399857A (en) * | 2016-09-29 | 2017-02-15 | 马钢(集团)控股有限公司 | Production method for Si-contained cold-rolling hot galvanizing dual-phase steel with tensile strength reaching 800MPa level |
| CN107761006A (en) * | 2017-10-23 | 2018-03-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Strong dual phase steel of low-carbon galvanizing superelevation and preparation method thereof |
| CN107829038A (en) * | 2017-11-07 | 2018-03-23 | 东北大学 | A kind of high strength and ductility, high platability fine grain hot dip galvanized dual phase steel and its production method |
| CN109182672A (en) * | 2018-10-26 | 2019-01-11 | 山东钢铁集团日照有限公司 | A method of producing the economical cold rolling DP590 steel of different yield strength ranks |
-
2019
- 2019-03-29 CN CN201910253132.8A patent/CN109868416A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646797A (en) * | 2007-03-30 | 2010-02-10 | 杰富意钢铁株式会社 | High-strength hot-dip zinc-coated steel sheet |
| CN101939457A (en) * | 2008-02-08 | 2011-01-05 | 杰富意钢铁株式会社 | High strength galvanized steel sheet with excellent formability and method for manufacturing the same |
| CN101348885A (en) * | 2008-09-11 | 2009-01-21 | 北京科技大学 | 1000MPa grade cold rolling hot dip galvanizing two-phase steel and manufacturing method thereof |
| CN102828119A (en) * | 2011-06-14 | 2012-12-19 | 鞍钢股份有限公司 | High-bending 980 MPa-grade cold-rolled dual-phase steel and preparation process thereof |
| CN105543674A (en) * | 2015-12-18 | 2016-05-04 | 东北大学 | Method for manufacturing cold-rolled ultrahigh-strength dual-phase steel with high local forming performance |
| CN105369135A (en) * | 2015-12-22 | 2016-03-02 | 武汉钢铁(集团)公司 | 450 MPa-level zinc-plated dual-phase steel for sedan and production method thereof |
| CN105401071A (en) * | 2015-12-22 | 2016-03-16 | 武汉钢铁(集团)公司 | Galvanized dual-phase steel for 500 MPa class car and production method |
| CN105441805A (en) * | 2015-12-22 | 2016-03-30 | 武汉钢铁(集团)公司 | Galvanized dual-phase steel for 800MPa grade cars and production method |
| CN106399857A (en) * | 2016-09-29 | 2017-02-15 | 马钢(集团)控股有限公司 | Production method for Si-contained cold-rolling hot galvanizing dual-phase steel with tensile strength reaching 800MPa level |
| CN107761006A (en) * | 2017-10-23 | 2018-03-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Strong dual phase steel of low-carbon galvanizing superelevation and preparation method thereof |
| CN107829038A (en) * | 2017-11-07 | 2018-03-23 | 东北大学 | A kind of high strength and ductility, high platability fine grain hot dip galvanized dual phase steel and its production method |
| CN109182672A (en) * | 2018-10-26 | 2019-01-11 | 山东钢铁集团日照有限公司 | A method of producing the economical cold rolling DP590 steel of different yield strength ranks |
Non-Patent Citations (1)
| Title |
|---|
| 李大光: "热镀锌工艺对汽车结构用590MPa级双相钢组织的影响", 《第九届中国金属学会青年学术年会》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281062A (en) * | 2020-10-22 | 2021-01-29 | 本钢板材股份有限公司 | 1000 MPa-grade low-cost hot-galvanized dual-phase steel and preparation method thereof |
| WO2023092565A1 (en) * | 2021-11-29 | 2023-06-01 | 广东中晟电磁科技股份有限公司 | 35wd1600 electrical steel for new energy vehicle drive motor and production method therefor |
| CN115612934A (en) * | 2022-10-19 | 2023-01-17 | 鞍钢蒂森克虏伯汽车钢有限公司 | 590 MPa-level high-formability hot-dip galvanized dual-phase steel plate and preparation method thereof |
| CN115612934B (en) * | 2022-10-19 | 2024-02-02 | 鞍钢蒂森克虏伯汽车钢有限公司 | 590 MPa-level high-formability hot dip galvanized dual-phase steel plate and preparation method thereof |
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Application publication date: 20190611 |