CN106967926B - A kind of yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates and preparation method thereof - Google Patents
A kind of yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates and preparation method thereof Download PDFInfo
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- CN106967926B CN106967926B CN201710191992.4A CN201710191992A CN106967926B CN 106967926 B CN106967926 B CN 106967926B CN 201710191992 A CN201710191992 A CN 201710191992A CN 106967926 B CN106967926 B CN 106967926B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
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Abstract
The invention discloses a kind of yield strength 460MPa grades low silicon titaniferous acid-cleaning plates and preparation method thereof, its contained chemical component and weight percent are as follows: C 0.06~0.09%, Mn 0.20~0.60%, Als 0.01~0.05%, Ti 0.025~0.06%, Si≤0.05%, Nb≤0.01%, S≤0.010%, P≤0.020%, N≤0.004%, O≤0.003%, remaining is iron and inevitable impurity.Be prepared through following steps: converter smelting -- ladle argon-blown -- LF furnace refining -- RH application of vacuum -- continuous casting -- hot continuous rolling -- section cooling -- batching -- enter continuous pickling line carry out pickling.Its tissue morphology is ferrite+a small amount of carbide+a small amount of pearlite, its grain size number is 11~12 grades, yield strength is 460~490MPa, tensile strength is 565~585MPa, elongation percentage is 22~25%, has FB (02) ratings above strip surface quality and good processing performance.
Description
Technical field
The present invention relates to acid-cleaning plates and preparation method thereof, and in particular to a kind of yield strength 460MPa grades of low silicon titaniferous pickling
Plate and preparation method thereof.
Background technique
High-Strength Low-Alloy vehicle structure generally uses Nb microalloy with steel and suitably adds the design of Si ingredient.It is rolled in hot rolling
Because of the recrystallization inhibiting effect of Nb during system, making the steel grade, roll-force rises comparatively fast during the rolling process, breaks to roll
Bad effect is further obvious, causes roll pitted skin, influences strip surface quality after pickling.The addition of Si element, causes belt steel surface
The enhancing of iron scale viscosity, it is difficult to remove, longitudinal pressure oxygen shape striped along rolling direction occur.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of yield strength 460MPa grades low silicon titaniferous acid-cleaning plates and its
Preparation method, with FB (02) ratings above strip surface quality and good processing performance.
The technical scheme adopted by the invention is as follows:
A kind of yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates, chemical component and weight percent are as follows: C 0.06~
0.09%, Mn 0.20~0.60%, Als 0.01~0.05%, Ti 0.025~0.06%, Si≤0.05%, Nb≤
0.010%, S≤0.010%, P≤0.020%, N≤0.004%, O≤0.003%, remaining is iron and inevitable impurity.
Further, chemical component and weight percent are preferred are as follows: and C 0.064~0.086%, Mn 0.42~
0.58%, Als 0.032~0.048%, Ti 0.032~0.055%, Si 0.01~0.05%, Nb 0.002~
0.008%, S 0.002~0.008%, P 0.005~0.015%, N 0.001~0.0035%, O 0.001~
0.0026%, remaining is iron and inevitable impurity.
Further, chemical component and weight percent are more preferably: C 0.08%, Mn 0.48%, Als
0.04%, Ti 0.053%, Si 0.02%, Nb 0.005%, S 0.004%, P 0.011%, N 0.0025%, O
0.0015%, remaining is iron and inevitable impurity.
The present invention also provides the preparation methods of above-mentioned yield strength 460MPa grades low silicon titaniferous acid-cleaning plates, including following step
It is rapid: converter smelting -- ladle argon-blown -- LF furnace refining -- RH application of vacuum -- continuous casting -- hot continuous rolling -- section cooling -- batching -- into
Enter continuous pickling line and carries out pickling；Pickling temperature is 70~80 DEG C, 80~160m/min of pickling speed；Each acid tank dissociates acid solution
Concentration is respectively as follows: 1# acid tank and dissociates acid strength for 25~75g/L, and 2# acid tank dissociates acid strength for 95~145g/L, and 3# is sour
Slot dissociates acid strength for 140~190g/L.
Further, in hot continuous rolling step, heating temperature is 1220~1250 DEG C, and soaking time is no less than 40min；Roughing
Finishing temperature is 1082~1095 DEG C；Entry temperature at finishing is 1000~1080 DEG C；Finish rolling finishing temperature is 840~900 DEG C.
Further, roughing rolls 6~10 passages, and deflection is between 10~20% per pass, the change of last three passage
Shape amount is between 18~20%；Last percentage pass reduction of finish rolling is not less than 8%, and last two passages cumulative deformation is not less than
20%.
Further, section cooling rate is greater than 30 DEG C/s；Coiling temperature is 580~640 DEG C.
Further, in hot continuous rolling step, each temperature parameter is preferred are as follows: heating temperature is 1232~1250 DEG C, when soaking
Between be 40~80min；Roughing finishing temperature is 1085~1090 DEG C；Entry temperature at finishing is 1024~1076 DEG C；Finish rolling finish to gauge
Temperature is 852~885 DEG C；Section cooling rate is preferably 42~64 DEG C/s；Coiling temperature is preferably 595~625 DEG C.
Above-mentioned parameter is further preferred are as follows: in hot continuous rolling step, heating temperature is 1250 DEG C, soaking time 65min；Slightly
Rolling finishing temperature is 1090 DEG C；Entry temperature at finishing is 1070 DEG C；Finish rolling finishing temperature is 880 DEG C；Section cooling rate is 45
℃/s；Coiling temperature is 610 DEG C.
According to the acid-cleaning plate that above-mentioned preparation method is prepared, tissue morphology is ferrite+a small amount of carbide+a small amount of pearl
Body of light, grain size number are 11~12 grades, and yield strength is 460~490MPa, and tensile strength is 565~585MPa, are extended
Rate is 22~25%.
Yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates disclosed in this invention and preparation method thereof are designed in ingredient
On, in order to guarantee material high intensity and high tenacity, while considering its welding performance and forming property, C content control exists
0.06%~0.09%, preferably 0.064~0.086%, more preferably 0.08%；
Mn element can improve the intensity of steel by solution strengthening, can also expand austenite phase field, reduce overcooling austenite phase
Transition temperature, be conducive to the refinement of phase-change organization, control the content of Mn element 0.20~0.60%, preferably in the present invention
It is 0.42~0.58%, more preferably 0.48%, Mn constituent content is excessively high to make steel band grain coarsening, too low to reduce the strong of steel
Degree；
Als and nitrogen and oxygen have very strong affinity, and nitrogen agent is determined in deoxidation when being steel-making, in addition, aluminium can refine crystal grain, still
When aluminium content is more than certain value in steel, crystal grain is easy roughening of growing up instead, and therefore, the present invention controls the content of aluminium 0.01
~0.05%, preferably 0.032~0.048%, more preferably 0.04%；
Ti is the strong deoxidier in steel, and steel interior tissue can be made fine and closely woven, refines crystal grain, reduces aging sensitivity and cold short
Property, improving welding property, micro Ti can be improved the yield strength of steel, but when Ti/C ratio is more than 4, intensity and toughness
Sharply decline, therefore, the content of Ti is limited in 0.025~0.06%, preferably 0.032~0.055% by the present invention, more preferably
It is 0.053%；
Si can improve the intensity of solid solution in steel, but the too high levels of silicon can reduce the plasticity, toughness and ductility of steel,
Therefore, the content of Si is limited in 0.05% hereinafter, preferably 0.01~0.05% by the present invention, and more preferably 0.02%；
Nb has the function of that the addition for refining crystal grain, micro Nb can be improved the yield strength and impact flexibility and processing of steel
The content of Nb is limited in 0.010 hereinafter, preferably 0.002~0.008%, more preferably by performance, therefore, the present invention
0.005%；
N: micro N has the function of solution strengthening, and can be improved the intensity, low-temperature flexibility and weldability of steel, still
The too high levels of N in steel, will lead to that steel macrostructure is loose or stomata, and therefore, the content of N is limited in 0.004% by the present invention
Hereinafter, preferably 0.001~0.0035%, more preferably 0.0025%；
P, S, O: for the harmful element in steel, P, S, O element should be as low as possible, still, P, S, O content be down to it is too low, no
Only increase cost, and unobvious to the further impact of performance that improves, according to equipment reality, comprehensively considers, P, S, O element contain
Amount will be strict controlled within parameter area of the present invention.
In technological design, in order to be dissolved microalloy sufficiently, by heating and temperature control at 1220~1250 DEG C, soaking
Between no less than 40 minutes；For fining austenite grains, the roughing rolling pass and deflection in Hot Strip Rolling are controlled；In essence
It rolls section and further refines crystal grain, entry temperature at finishing is controlled at 1000~1080 DEG C；In order to improve the non-recrystallization of precision rolling rear
The effect of area's rolling, accumulation storage can, it is desirable that last percentage pass reduction of finish rolling is not less than 8%, and last two passages accumulation becomes
Shape amount is not less than 20%, and finish rolling finishing temperature is controlled at 840~900 DEG C, using the thermomechanical controlled rolling technique of TMCP, does not allow
Any rack does not apply deflection and empty mistake；In section cooling step, to improve austenite degree of supercooling, crystal grain is refined, is adopted
With the cooling rate for being greater than 30 DEG C/s；And oiler temperature control is further ensured that in the best Precipitation Temperature section of Nb, Ti element
The high intensity and high tenacity of material；In order to improve the efficiency of pickling, increase the finish of belt steel surface, pickling temperature control is
70~80 DEG C, 80~160m/min of pickling speed；It is 25 that the free acid strength of each acid tank, which is respectively as follows: the free acid strength of 1# acid tank,
~75g/L, 2# acid tank dissociate acid strength for 95~145g/L, and 3# acid tank dissociates acid strength for 140~190g/L.
Above-mentioned ingredient design combines specific technique, and the present invention has obtained a kind of yield strength 460MPa grades of low silicon titaniferous
Acid-cleaning plate, the addition of trace of Al s, Ti, Nb not only facilitate refinement crystal grain, and can be improved the intensity and processability of steel band
Can, it is designed using the ingredient of low N, O, carries out microalloying using Ti, and using the duplex technique of LF+RH furnace, control N, O contain
Amount is improved Ti utilization rate, and is designed using reasonable coiling temperature, and Ti is made to reach best precipitation effect after the cooling period.This hair
Bright obtained acid-cleaning plate has good processing energy, can satisfy the processing requests such as bending, punching press, in addition, also having good
Surface quality, credit rating reach FB (02) or more.
Detailed description of the invention
Fig. 1 is the metallographic structure figure for 460MPa grades of the yield strength low silicon titaniferous acid-cleaning plates that embodiment 1 obtains.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and embodiments
A kind of yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates, chemical component and weight percent are as follows: C0.06~
0.09%, Mn 0.20~0.60%, Als 0.01~0.05%, Ti 0.025~0.06%, Si≤0.05%, Nb≤
0.010%, S≤0.010%, P≤0.020%, N≤0.004%, O≤0.003%, remaining is iron and inevitable impurity.
It is prepared using following steps:
Converter smelting -- ladle argon-blown -- LF furnace refining -- RH application of vacuum -- continuous casting -- hot continuous rolling -- section cooling -- volume
Take -- enter continuous pickling line and carries out pickling.
Wherein, in hot continuous rolling step, the tapping temperature of heating furnace is 1220~1250 DEG C, and soaking time is no less than
40min；Roughing finishing temperature is 1082~1095 DEG C；Entry temperature at finishing is 1000~1080 DEG C；Finish rolling finishing temperature is 840
~900 DEG C；Roughing rolls 6~10 passages, per pass deflection between 10~20%, the deflection of last three passage 18~
Between 20%；Last percentage pass reduction of finish rolling is not less than 8%, and last two passages cumulative deformation is not less than 20%；Using
The thermomechanical controlled rolling technique of TMCP does not allow any rack not apply deflection and empty mistake, and hot rolled thickness specification 1.2~
6.0mm.Section cooling rate is greater than 30 DEG C/s；Coiling temperature is 580~640 DEG C.In acid cleaning process, pickling temperature be 70~
80 DEG C, 80~160m/min of pickling speed；Each acid tank dissociate acid strength be respectively as follows: 1# acid tank dissociate acid strength be 25~
75g/L, 2# acid tank dissociate acid strength for 95~145g/L, and 3# acid tank dissociates acid strength for 140~190g/L.
With specific embodiment 1~5, the present invention is described in detail below, yield strength 460MPa grades in each embodiment
The chemical component and weight percent of low silicon titaniferous acid-cleaning plate are shown in Table 1, and processing parameter is shown in Table 2, and mechanical property is shown in Table 3.
The chemical component and weight percent of 460MPa grades of low silicon titaniferous acid-cleaning plates in each embodiment of table 1
| C | Mn | Als | Ti | Si | Nb | S | P | N | O | |
| Embodiment 1 | 0.08% | 0.48% | 0.04% | 0.053% | 0.02% | 0.005% | 0.004% | 0.011% | 0.0025% | 0.0015% |
| Embodiment 2 | 0.062% | 0.43% | 0.035% | 0.047% | 0.03% | 0.008% | 0.008% | 0.014% | 0.0035% | 0.0026% |
| Embodiment 3 | 0.073% | 0.57% | 0.027% | 0.035% | 0.047% | 0.003% | 0.002% | 0.008% | 0.0022% | 0.0021% |
| Embodiment 4 | 0.086% | 0.31% | 0.015% | 0.026% | 0.014% | 0.002% | 0.006% | 0.006% | 0.0012% | 0.0018% |
| Embodiment 5 | 0.09% | 0.22% | 0.046% | 0.06% | - | - | 0.01% | 0.005% | 0.0018% | 0.0012% |
The processing parameter of 460MPa grades of low silicon titaniferous acid-cleaning plates in each embodiment of table 2
The performance parameter of 460MPa grades of low silicon titaniferous acid-cleaning plates in each embodiment of table 3
What above-mentioned reference embodiment carried out a kind of yield strength 460MPa grades low silicon titaniferous acid-cleaning plates and preparation method thereof
Detailed description, is illustrative without being restrictive, can enumerate several embodiments according to limited range, therefore not
The change and modification being detached under present general inventive concept, should belong within protection scope of the present invention.
Claims (6)
1. a kind of yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates, which is characterized in that its chemical component and weight percent are as follows:
C 0.06~0.09%、Mn 0.20~0.60%、Als 0.01~0.05%、Ti 0.025~0.06%、Si≤0.05%、Nb≤0.01%、
S≤0.010%, P≤0.020%, N≤0.004%, O≤0.003%, remaining is iron and inevitable impurity；
The preparation method of the acid-cleaning plate is the following steps are included: converter smelting, and -- ladle argon-blown -- refining of LF furnace -- is at RH vacuum
-- -- -- section cooling -- batching -- enters continuous pickling line and carries out pickling hot continuous rolling continuous casting reason；Pickling temperature is 70 ~ 80 DEG C,
80 ~ 160m/min of pickling speed；The free acid strength of each acid tank is respectively as follows: 1# acid tank and dissociates acid strength for 25 ~ 75g/L, 2#
Acid tank dissociates acid strength for 95 ~ 145g/L, and 3# acid tank dissociates acid strength for 140 ~ 190g/L；
In hot continuous rolling step, heating temperature is 1220 ~ 1250 DEG C, and soaking time is no less than 40min；Roughing finishing temperature is 1082
~1095℃；Entry temperature at finishing is 1000 ~ 1080 DEG C；Finish rolling finishing temperature is 840 ~ 900 DEG C；
Roughing rolls 6 ~ 10 passages, and deflection is between 10 ~ 20% per pass, and the deflection of last three passage is between 18 ~ 20%；
Last percentage pass reduction of finish rolling is not less than 8%, and last two passages cumulative deformation is not less than 20%；
Section cooling rate is greater than 30 DEG C/s；Coiling temperature is 580 ~ 640 DEG C.
2. yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates according to claim 1, which is characterized in that its chemical component
And weight percent are as follows: C 0.064 ~ 0.086%, Mn 0.42 ~ 0.58%, Als 0.032 ~ 0.048%, Ti 0.032 ~ 0.055%,
Si 0.01~0.05%、Nb 0.002~0.008%、S 0.002~0.008%、P 0.005~0.015%、N 0.001~0.0035%、O
0.001 ~ 0.0026%, remaining is iron and inevitable impurity.
3. yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates according to claim 1 or 2, which is characterized in that its chemistry
Ingredient and weight percent are as follows: C 0.08%, Mn 0.48%, Als 0.04%, Ti 0.053%, Si 0.02%, Nb 0.005%, S
0.004%, P 0.011%, N 0.0025%, O 0.0015%, remaining is iron and inevitable impurity.
4. yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates according to claim 1, which is characterized in that hot continuous rolling step
In, heating temperature is 1232 ~ 1250 DEG C, and soaking time is 40 ~ 80min；Roughing finishing temperature is 1085 ~ 1090 DEG C；Finish rolling enters
Mouth temperature is 1024 ~ 1076 DEG C；Finish rolling finishing temperature is 852 ~ 885 DEG C；Section cooling rate is 42 ~ 64 DEG C/s；Coiling temperature
It is 595 ~ 625 DEG C.
5. yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates according to claim 1, which is characterized in that hot continuous rolling step
In, heating temperature is 1250 DEG C, soaking time 65min；Roughing finishing temperature is 1090 DEG C；Entry temperature at finishing is 1070
℃；Finish rolling finishing temperature is 880 DEG C；Section cooling rate is 45 DEG C/s；Coiling temperature is 610 DEG C.
6. yield strength 460MPa grades of low silicon titaniferous acid-cleaning plates according to claim 1, which is characterized in that the acid-cleaning plate
Tissue morphology be ferrite+a small amount of carbide+a small amount of pearlite, grain size number is 11 ~ 12 grades, yield strength is 460 ~
490 MPa, tensile strength are 565 ~ 585MPa, and elongation percentage is 22 ~ 25%.
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| CN109694998A (en) * | 2017-10-20 | 2019-04-30 | 鞍钢股份有限公司 | Low-yield-ratio ferrite-bainite hot rolled steel plate and production method thereof |
| CN109182898A (en) * | 2018-09-03 | 2019-01-11 | 马鞍山钢铁股份有限公司 | A kind of yield strength 650MPa grades of acid-cleaning plates and its production method |
| CN110819881B (en) * | 2019-11-29 | 2021-09-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Smelting method of nitrogen-containing high-strength steel 32AB5 |
| CN111893400B (en) * | 2020-08-18 | 2021-11-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Production method of steel for welded pipe with yield strength of 300MPa |
| CN114182182A (en) * | 2020-09-14 | 2022-03-15 | 上海梅山钢铁股份有限公司 | Hot-rolled pickled steel plate for refrigerator compressor shell and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343677A (en) * | 2008-09-01 | 2009-01-14 | 湖南华菱涟源钢铁有限公司 | Production method of low-silicon low-carbon deep drawing steel |
| CN102199723A (en) * | 2010-03-25 | 2011-09-28 | 宝山钢铁股份有限公司 | High-strength cold-rolled hot-galvanized precipitation reinforced steel and manufacturing method thereof |
| CN102787271A (en) * | 2012-07-17 | 2012-11-21 | 马钢(集团)控股有限公司 | Production method of 460MPa grade high-surface quality structural hot dipped galvanized steel plate and its product |
| CN105256323A (en) * | 2015-11-04 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous acid pickling method for hot-rolled dual-phase steel |
-
2017
- 2017-03-28 CN CN201710191992.4A patent/CN106967926B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343677A (en) * | 2008-09-01 | 2009-01-14 | 湖南华菱涟源钢铁有限公司 | Production method of low-silicon low-carbon deep drawing steel |
| CN102199723A (en) * | 2010-03-25 | 2011-09-28 | 宝山钢铁股份有限公司 | High-strength cold-rolled hot-galvanized precipitation reinforced steel and manufacturing method thereof |
| CN102787271A (en) * | 2012-07-17 | 2012-11-21 | 马钢(集团)控股有限公司 | Production method of 460MPa grade high-surface quality structural hot dipped galvanized steel plate and its product |
| CN105256323A (en) * | 2015-11-04 | 2016-01-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Continuous acid pickling method for hot-rolled dual-phase steel |
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