CN105349884B - The enamelled strip of hot rolling acid-cleaning containing Ti and its production method - Google Patents
The enamelled strip of hot rolling acid-cleaning containing Ti and its production method Download PDFInfo
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- CN105349884B CN105349884B CN201510666708.5A CN201510666708A CN105349884B CN 105349884 B CN105349884 B CN 105349884B CN 201510666708 A CN201510666708 A CN 201510666708A CN 105349884 B CN105349884 B CN 105349884B
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- 238000005098 hot rolling Methods 0.000 title claims abstract description 27
- 238000004140 cleaning Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000007670 refining Methods 0.000 claims description 10
- 238000009749 continuous casting Methods 0.000 claims description 7
- 238000005275 alloying Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000005554 pickling Methods 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 4
- 230000003009 desulfurizing effect Effects 0.000 claims description 4
- 238000009966 trimming Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007872 degassing Methods 0.000 claims 2
- 241001417490 Sillaginidae Species 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 20
- 239000010959 steel Substances 0.000 abstract description 20
- 241000251468 Actinopterygii Species 0.000 abstract description 6
- 239000010936 titanium Substances 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 210000003298 dental enamel Anatomy 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000037 vitreous enamel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The present invention relates to hot continuous rolling steel band and its production method, more particularly to a kind of enamelled strip of hot rolling acid-cleaning containing Ti and production method.The present invention provides a kind of enamelled strip of hot rolling acid-cleaning containing Ti, and its chemical composition constitutes as C by weight percentage：0.05~0.08%, Ti：0.030~0.045%, Mn：0.65~0.80%, P：0.01%~0.025%, S：0.001%~0.01%, Als：0.015~0.050%, Si≤0.03%, remaining is Fe and inevitable impurity.330~430MPa of yield strength of gained hot rolling acid-cleaning containing Ti enamelled strip, 400~520MPa of tensile strength, elongation percentage more than 22%, it has the high fish scaling resistance of high formability.
Description
Technical field
The present invention relates to hot continuous rolling steel band and its production method, more particularly to a kind of enamelled strip of hot rolling acid-cleaning containing Ti and
Production method.
Background technology
China is the consumption big country of an enamelware, the need for actual production can not meet porcelain enamel industry.Particularly enamel
The relation of technique and enamelled strip kind is very close, but because Steel for enamel kind is not complete, has limited the hair of porcelain enamel industry
Exhibition.Especially country actively promotes energy-saving and emission-reduction, and development trend is turned into hot Dai Leng.
The performance requirement of enamelled pressed steel and its processing technology are closely related, mainly including intensity, formability, scaling resistance,
In terms of adherence and weldability, different purposes, it is desirable to be adapted with different combination properties.
Fish scaling resistance be glassed steel it is due it is most basic, be also one of most important performance indications.Steel plate anti-in itself
The quick-fried performance of squama is to cause enamelware to produce the quick-fried one of the main reasons of squama.If hydrogen spreads slowly in steel plate, warded off in identical
The hydrogen entered under porcelain technique in steel plate is just few, and this is beneficial to prevent that the squama of enamelware is quick-fried.Hot rolling acid-cleaning glassed steel is using low
Carbon is designed, it is ensured that strip is molded and welding performance, using Ti precipitation strengths, not only ensures the intensity of strip, while separate out
TiC can be used as hydrogen storage trap, the fish scaling resistance of reinforcing material.
Application No. CN201310548310.2, entitled " yield strength is 330MPa grades of SPHC enamelled strip
And manufacture method " patent application in use CSP techniques, using in low-carbon titanium meet reinforcing effect, process equipment condition
Otherness is big.
Patent No. CN101812630A " hot-rolling high-strength enamel sheet for deep drawing and its manufacture method " is using in low-carbon
Titanium ensures its intensity and elongation percentage, and process conditions are complicated and be hot rolled coil.
The content of the invention
It is an object of the invention to provide a kind of enamelled strip of hot rolling acid-cleaning containing Ti, the enamelled strip of hot rolling acid-cleaning containing Ti
330~430MPa of yield strength, 400~520MPa of tensile strength, elongation percentage more than 22%, it has the high anti-squama of high formability quick-fried
Performance.
The technical proposal for solving the technical problem of the invention is：
The present invention provides a kind of enamelled strip of hot rolling acid-cleaning containing Ti, and its chemical composition constitutes as C by weight percentage：0.05
~0.08%, Ti：0.030~0.045%, Mn：0.65~0.80%, P：0.01%~0.025%, S：0.001%~
0.010%, Als：0.015~0.050%, Si≤0.03%, remaining is Fe and inevitable impurity.
Further, the microscopic structure of the enamelled strip of hot rolling acid-cleaning containing Ti is ferrite+pearlite, and its grain size is 9-
11 grades.
Further, 330~430MPa of yield strength of the enamelled strip of hot rolling acid-cleaning containing Ti, tensile strength 400~
520MPa, elongation percentage more than 22%.
The present invention uses low-carbon route, adds appropriate Ti, can be with fining austenite grains, and performance Ti, which has, makes solid solution C
The effect that can assemble carbide is reduced, the ductility of steel plate is substantially increased, it is ensured that the shaping of hot rolling acid-cleaning enamelled strip
Performance is while Ti precipitate can be with hydrogen storage, it is ensured that fish scaling resistance.
The present invention also provides the production method of the above-mentioned enamelled strip of hot rolling acid-cleaning containing Ti, including molten steel is casting continuously to form into slab,
Then the slab is heated successively, roughing, finish rolling, section cooling and batched, wherein,
The heating and temperature control is at 1210~1240 DEG C；
Inlet temperature control is at 1030~1070 DEG C in finishing stands, and finishing temperature control is at 860~900 DEG C；
Oiler temperature control is at 640~680 DEG C.
Further, in aforementioned production method, 5 passes are used in roughing operation, every time deflection is necessary >=and 20%.
Further, in aforementioned production method, section cooling speed is 15~20 DEG C/s after finish rolling.
Further, the thickness after the slab rough rolling is 38~40mm.
Further, the thickness after the slab finish rolling is 2~6mm.
The beneficial effects of the invention are as follows：
Using 280~320MPa of yield strength of hot rolling acid-cleaning glassed steel produced by the invention, tensile strength 400~
520MPa, elongation percentage more than 22%, with stable mechanical property, obdurability matching is good, forming property and welding performance are excellent
The characteristics of.Low with cost of alloy and the present invention gives full play to controlled rolling and controlled cooling ability, technique is simple, general hot continuous rolling
With the advantage of production.
Embodiment
The purpose of the present invention is on the basis of hot rolling acid-cleaning glassed steel processability and fish scaling resistance is ensured, fully to send out
Waving controlled rolling and controlled cooling ability, there is provided a kind of hot rolling glassed steel of the high fish scaling resistance of high formability.
The present invention the technological process of production be：After desulfurizing iron → converter smelting top-bottom blowing → deoxidation, alloying → stove
The de- vapour refining → continuous casting → heating of plate blank → high-pressure water descaling of chain-wales benefit hello Al lines → LF refining heating → RH vacuum cycles →
Roughing → Coil Box batches → finish rolling → section cooling → and batches → weld end to end → pickling → trimming → oiling → finished product.
Hot rolling enamelled strip is taken off after vapour refining, continuous casting by conventional converter smelting, LF refining, RH vacuum cycles, finished steel
Chemical composition be：C：0.05~0.08%, Ti：0.030~0.045%, Mn：0.65~0.80%, P：0.01%~
0.025%, S：0.001%~0.01%, Als：0.015~0.050%, Si≤0.03%, remaining is Fe and inevitable
Impurity.
Slab obtained by continuous casting is heated to 1210~1240 DEG C of insulation roughing, according to the difference of finished product thickness, continuous casting billet warp
Cross 5 passage roughing, every time deflection is necessary >=and 20%, different according to finished product thickness, workpiece thickness is different.
Steel billet after roughing then carries out Coil Box and batched, to ensure that the elongated temperature of steel billet is uniform；Remove simultaneously
Secondary oxidation iron sheet is to ensure that steel billet plate face is bright and clean.
Middle base carries out displacement uncoiling after being batched through Coil Box, and finish rolling, entry temperature at finishing are carried out into finish rolling area
1030~1070 DEG C, finishing temperature scope is 860~900 DEG C；Section cooling uses leading portion Cooling Mode, cooling after finish rolling
Batched to 640~680 DEG C, pickling after welding end to end.
The production method of the enamelled strip of hot rolling acid-cleaning containing Ti includes：1) slab heating temperature is controlled at 1210~1240 DEG C,
Both slab fully heated, the abundant solid solution of alloying element had been ensured, the abnormal growth of austenite crystal is prevented again；2) roughing uses 5 roads
It is secondary, every time deflection is necessary >=and 20%, it is ensured that austenite recrystallization, fining austenite grains；3) entry temperature at finishing 1030
~1070 DEG C, finishing temperature scope is 860~900 DEG C；4) section cooling uses leading portion Cooling Mode after finish rolling, is cooled to
640~680 DEG C are batched；Obtain separating out size and the suitable TiC of quantity, to ensure the intensity and fish scaling resistance of material.
The embodiment of the present invention is further described with reference to embodiment, not therefore by present invention limit
System is among described scope of embodiments.
Embodiment
The present invention the technological process of production be：After desulfurizing iron → converter smelting top-bottom blowing → deoxidation, alloying → stove
The de- vapour refining → continuous casting → heating of plate blank → high-pressure water descaling of chain-wales benefit hello Al lines → LF refining heating → RH vacuum cycles →
Roughing → Coil Box batches → finish rolling → section cooling → and batches → weld end to end → pickling → trimming → oiling → finished product.
Also, 5 passes are used in roughing operation, every time deflection is necessary >=and 20%.
Section cooling uses leading portion Cooling Mode after finish rolling.
Table 1 is the chemical composition of molten steel of the embodiment of the present invention, and table 2 is hot rolling technology controlling value, and table 3 is the mechanical property of coil of strip
Can, wherein, the yield strength (ReL) of the coil of strip, tensile strength (Rm), elongation percentage (A%) are according to GB/T228.1-2010
Defined method is detected.The microscopic structure of gained hot rolling acid-cleaning containing Ti enamelled strip is F+P, and its grain size is 10 grades.
Comparative example
The technological process of production be the same as Example of comparative example 1 and 2, its chemical composition is as shown in table 1, hot-rolled process parameter such as table
Shown in 2, the mechanical property of gained coils of hot-rolled steel is as shown in table 3.
The chemical composition of the embodiment of table 1 and comparative example
| C | Si | Mn | Ti | P | S | Als | |
| Embodiment 1 | 0.07 | 0.02 | 0.68 | 0.039 | 0.012 | 0.005 | 0.032 |
| Embodiment 2 | 0.07 | 0.02 | 0.68 | 0.039 | 0.012 | 0.005 | 0.032 |
| Embodiment 3 | 0.07 | 0.02 | 0.68 | 0.039 | 0.012 | 0.005 | 0.032 |
| Embodiment 4 | 0.07 | 0.02 | 0.68 | 0.039 | 0.012 | 0.005 | 0.032 |
| Comparative example 1 | 0.04 | 0.04 | 0.50 | 0.015 | 0.010 | 0.011 | 0.030 |
| Comparative example 2 | 0.1 | 0.05 | 0.90 | 0.055 | 0.011 | 0.012 | 0.035 |
The hot rolling technology controlling value of the embodiment of table 2 and comparative example
The mechanical property of coil of strip obtained by the embodiment of table 3 and comparative example
Claims (2)
1. the enamelled strip of hot rolling acid-cleaning containing Ti, it is characterised in that its chemical composition constitutes as C by weight percentage：0.07%,
Ti：0.039%, Mn：0.68%, P：0.012%, S：0.005%, Als：0.032%, Si 0.02%, remaining is Fe and can not
The impurity avoided；
Its technological process of production is：Chain-wales, which are mended, after desulfurizing iron → converter smelting top-bottom blowing → deoxidation, alloying → stove feeds
Al lines → LF refining heating → RH vacuum circulation degassings refining → continuous casting → heating of plate blank → high-pressure water descaling → roughing → hot rolling
Case batches → finish rolling → section cooling → and batches → weld end to end → pickling → trimming → oiling → finished product；
Wherein, 5 passes are used in roughing operation, every time deflection is necessary >=and 20%；
Section cooling uses leading portion Cooling Mode after finish rolling；
1232 DEG C of slab heating temperature, workpiece thickness 38.6mm after roughing, 1040.2 DEG C of finish rolling start rolling temperature, finish rolling finish to gauge temperature
878 DEG C of degree, 670 DEG C of coiling temperature, the thickness 3mm after rolling；
The performance of gained hot rolling acid-cleaning containing Ti enamelled strip：Yield strength (ReL) 373MPa；Tensile strength (Rm) 467MPa；Prolong
Stretch rate (A) 38.5%；Microscopic structure is F+P, and its grain size is 10 grades.
2. the enamelled strip of hot rolling acid-cleaning containing Ti production method described in claim 1, its technological process of production is：Desulfurizing iron → turn
Stove smelts chain-wales after top-bottom blowing → deoxidation, alloying → stove and mends hello Al lines → LF refining heating → RH vacuum circulation degassings essence
Refining → continuous casting → heating of plate blank → high-pressure water descaling → roughing → Coil Box batches → finish rolling → section cooling → and batches → weld
End to end → pickling → trimming → oiling → finished product；
Wherein, the chemical composition of slab constitutes as C by weight percentage：0.07%, Ti：0.039%, Mn：0.68%, P：
0.012%, S：0.005%, Als：0.032%, Si0.02%, remaining is Fe and inevitable impurity；
5 passes are used in roughing operation, every time deflection is necessary >=and 20%；
Section cooling uses leading portion Cooling Mode after finish rolling；
1232 DEG C of slab heating temperature, workpiece thickness 38.6mm after roughing, 1040.2 DEG C of finish rolling start rolling temperature, finish rolling finish to gauge temperature
878 DEG C of degree, 670 DEG C of coiling temperature, the thickness 3mm after rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666708.5A CN105349884B (en) | 2015-10-15 | 2015-10-15 | The enamelled strip of hot rolling acid-cleaning containing Ti and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510666708.5A CN105349884B (en) | 2015-10-15 | 2015-10-15 | The enamelled strip of hot rolling acid-cleaning containing Ti and its production method |
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| CN105349884A CN105349884A (en) | 2016-02-24 |
| CN105349884B true CN105349884B (en) | 2017-09-26 |
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Families Citing this family (8)
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| CN105689392B (en) * | 2016-04-01 | 2017-10-31 | 莱芜市泰山冷轧板有限公司 | A kind of very thin enamel cold-rolled strip production method |
| CN107794460B (en) * | 2016-08-30 | 2019-07-23 | 宝山钢铁股份有限公司 | A kind of enamel high-strength steel sheet and its manufacturing method with excellent two-sided application of slip performance |
| CN107779762B (en) * | 2016-08-30 | 2019-07-23 | 宝山钢铁股份有限公司 | A kind of enamel steel plate and its manufacturing method with excellent high temperature deformation performance |
| CN106834920B (en) * | 2016-12-23 | 2019-04-30 | 东北大学 | A kind of hot rolling enamelled pressed steel and preparation method thereof |
| CN111266406B (en) * | 2020-03-02 | 2022-01-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Rolling method of ultrathin hot continuous rolling steel strip |
| CN114015947A (en) * | 2021-10-09 | 2022-02-08 | 包头钢铁（集团）有限责任公司 | Cold-rolled enamel steel for stamping and manufacturing method thereof |
| CN115418572A (en) * | 2022-09-27 | 2022-12-02 | 首钢集团有限公司 | Hot-rolled acid-washed enamel steel and preparation method thereof |
| CN115354235B (en) * | 2022-09-30 | 2023-01-24 | 武汉钢铁有限公司 | High-surface high-precision high-strength enamel steel and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100473742C (en) * | 2006-04-29 | 2009-04-01 | 宝山钢铁股份有限公司 | Hot-rolled fine-grained steel for electrostatic enamel and manufacturing method thereof |
| CN100547104C (en) * | 2006-09-05 | 2009-10-07 | 宝山钢铁股份有限公司 | A kind of hot-rolling high-strength enamel sheet and manufacture method thereof |
| CN101353758A (en) * | 2007-07-23 | 2009-01-28 | 宝山钢铁股份有限公司 | Hot rolling high strength steel plate for two-sided porcelain enamel and manufacturing method thereof |
| CN101255530B (en) * | 2008-03-18 | 2011-01-12 | 武汉钢铁(集团)公司 | High-strength steel for water heater inner container and production method thereof |
| CN101812630B (en) * | 2009-02-25 | 2012-02-29 | 宝山钢铁股份有限公司 | Hot-rolling high-strength enamel sheet for deep drawing and manufacturing method thereof |
| CN102758137A (en) * | 2011-04-25 | 2012-10-31 | 宝山钢铁股份有限公司 | Alloy material, enameled steel, manufacturing method thereof, and purpose thereof |
| CN103510011B (en) * | 2012-06-20 | 2015-09-02 | 鞍钢股份有限公司 | A kind of enamel inner container High Strength Steel Plate and manufacture method thereof |
| CN104419874A (en) * | 2013-09-05 | 2015-03-18 | 鞍钢股份有限公司 | Hot rolled double-faced enamel steel with excellent fish scaling resistance and manufacture method of hot rolled double-faced enamel steel |
| CN103540845B (en) * | 2013-11-07 | 2016-01-20 | 武汉钢铁(集团)公司 | Yield strength is latten Glassed Steel and the manufacture method of 330MPa level |
| CN104789864A (en) * | 2015-03-31 | 2015-07-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-rolled steel strip used for enamel and having ultra-deep-punching performance and preparation method of hot-rolled steel strip |
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