CN105441802B - Titanium-containing acid pickling plate and preparation method thereof - Google Patents
Titanium-containing acid pickling plate and preparation method thereof Download PDFInfo
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- CN105441802B CN105441802B CN201510861238.8A CN201510861238A CN105441802B CN 105441802 B CN105441802 B CN 105441802B CN 201510861238 A CN201510861238 A CN 201510861238A CN 105441802 B CN105441802 B CN 105441802B
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- acid
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- temperature
- cleaning plate
- acid pickling
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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
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
Abstract
The invention belongs to the field of steel and iron smelting and particularly relates to a titanium-containing acid pickling plate and a preparation method thereof. The titanium-containing acid pickling plate is prepared from, by weight, not larger than 0.05% of C, not larger than 0.05% of Si, not larger than 0.40% of Mn, not larger than 0.025% of P, not larger than 0.025% of S, not larger than 0.03% of Ti and the balance Fe and inevitable impurities. The invention provides the titanium-containing acid pickling plate excellent in performance and the preparation method of the titanium-containing acid pickling plate. Mainly, by controlling the rolling, cooling and acid pickling tension leveling technology of the titanium-containing acid pickling plate, on one hand, an acid pickling plate yield platform is effectively eliminated, on the other hand, original mobile dislocation density is increased, and therefore the cross break defect of the acid pickling plate lower in yield strength is inhibited. The beneficial effects of being simple in method, low in production cost and excellent in product performance and welding performance are achieved.
Description
Technical field
The invention belongs to field of iron and steel smelting, and in particular to a kind of titaniferous acid-cleaning plate and preparation method thereof.
Background technology
Acid-cleaning plate is with high-quality SPHC as raw material, through pickling unit removal oxide layer, trimming, finishing, master operation
There is hot rolling raw material uncoiling → laser welding → withdrawal straightening stands to break phosphorus → turbulence acid dip → rinsing → online smooth → trimming → online
Oiling → bundling → packaging and storage, its surface quality and use requirement are part hot rollings between hot rolled plate and cold-reduced sheet
The preferable substitute products of plate and cold-reduced sheet.
Titaniferous acid-cleaning plate is that a certain amount of titanium alloy is added in common acid-cleaning plate, and Main Function is fixed in mild steel
C, N interstitial atom, another effect be improve finished product welding performance.
Acid-cleaning plate is a developing rolling shapes, and existing market demand is concentrated mainly on automobile industry, compressor row
Industry, machine industry, zero are with processing industry, fan industry, motorcycle industry, furniture of steel, Hardware fitting, electric cabinet shelf and each
Plant stamping parts of shape etc..With technological progress, hot rolling acid-cleaning plate has been directed to household electrical appliances, container, electric control cabinet etc. at present
Industry, wherein using hot rolling acid-cleaning plate replace cold drawing in some industry developments quickly.
Application No. " 201210175585.1 ", it is entitled " a kind of hot rolling acid-cleaning plate of vehicle structure containing Cr and its
Production method ", disclosing one kind has C：0.11~0.15%, Si≤0.05%, Mn0.60~1.20%, Cr 0.20~
0.40%th, the Fe of Ti 0.01~0.02%, P≤0.02%, S≤0.010%, Als 0.02~0.07% and surplus and not
Evitable impurity, above acid-cleaning plate by weight percentage.Wherein, C, Mn, Cr content are high in the patent, the intensity of steel
Height, the intensity of the acid-cleaning plate of preparation reaches 440MPa grades, is adapted to the high-strength structure steel such as automobile, and this kind of steel is not likely to produce in itself
Cross breaks defect.
Application No. " 201410681628.2 ", entitled " a kind of hot rolling acid-cleaning plate and its production method " is open
One kind by rationally addition micro-alloying element B, Ti, and combines hot rolling before finish rolling on the basis of the ordinary low-carbon steel component system
Case insulation, precision rolling rear cooling, are finally reached control tissue and precipitated phase, reduce KESHI gas mass effect in mild steel, make hot rolling
Strip top and bottom yield point stress difference is reduced to below 5MPa, eliminates hot rolled plate cross break print in surface in pickling uncoiling straightening process
Defect；The chemical composition composition of the wherein acid-cleaning plate is as follows：C0.02-0.06%, Si 0.005-0.02%, Mn0.05-
0.3%, Ti 0.01-0.1%, B 0.001-0.005%, Al0.01-0.1%, P≤0.03%, S≤0.01%, remaining is Fe
And inevitable impurity.With the addition of boron in the patent, the composition precision controlling of boron is difficult, and Boron contents it is higher when steel plate can produce
Raw boron is crisp, deteriorates plate property.
The content of the invention
In order to overcome the deficiencies in the prior art, first technical problem to be solved by this invention is to provide one kind can be had
Effect eliminates acid-cleaning plate yield point elongation, increases original mobile dislocation density, so as to inhibit more low yield strength acid-cleaning plate cross break to lack
Sunken titaniferous acid-cleaning plate, industrialized production simple possible.
A kind of titaniferous acid-cleaning plate of the present invention, is made up of following percentage by weight chemical composition：C≤0.05%, Si≤
0.05%, Mn≤0.40%, P≤0.025%, S≤0.025%, Ti≤0.03%, remaining is Fe and inevitable impurity.
Further, as preferred technical scheme, a kind of titaniferous acid-cleaning plate described above, by following percentage by weight
Chemical composition is constituted：C 0.01~0.05%, Si 0.01~0.05%, Mn 0.15~0.40%, P≤0.015%, S≤
0.010%, Ti 0.012~0.03%, remaining is Fe and inevitable impurity.
Further, as preferred technical scheme, a kind of titaniferous acid-cleaning plate described above, by following percentage by weight
Chemical composition is constituted：C 0.01~0.05%, Si 0.01~0.03%, Mn 0.15~0.39%, P 0.012~0.015%,
S 0.008~0.010%, Ti 0.012~0.025%, remaining is Fe and inevitable impurity.
Further, as preferred technical scheme, a kind of titaniferous acid-cleaning plate described above, by following percentage by weight
Chemical composition is constituted：C 0.05%, Si 0.02%, Mn 0.15%, P 0.012%, S 0.010%, Ti 0.019%, remaining
It is Fe and inevitable impurity.
A kind of titaniferous acid-cleaning plate described above, the 190~250MPa of yield strength of titaniferous acid-cleaning plate, tensile strength 300~
350MPa, elongation percentage >=45%.
Second technical problem to be solved by this invention is to provide that a kind of method is simple, low production cost, product shaping
The preparation method of performance and the excellent titaniferous acid-cleaning plate of welding performance.
A kind of preparation method of titaniferous acid-cleaning plate described above, the preparation method is mainly included the following steps that：Steel billet → heat
Roll → section cooling → batch → pickling；
Wherein, in hot-rolled step finish rolling start rolling temperature be 950~1050 DEG C, in hot-rolled step finishing temperature be 830~
900℃；Coiling temperature is 540~598 DEG C；Straightening elongation percentage in acid pickling step is 0.8~3.0%.
Further, as preferred technical scheme, a kind of preparation method of titaniferous acid-cleaning plate described above, hot rolling step
The start rolling temperature of finish rolling is 952~1048 DEG C in rapid, and finishing temperature is 834~897 DEG C in hot-rolled step；Coiling temperature is 545
~598 DEG C；Straightening elongation percentage in acid pickling step is 0.8~2.5%.
Further, as preferred technical scheme, a kind of preparation method of titaniferous acid-cleaning plate described above, hot rolling step
The start rolling temperature of finish rolling is 1048 DEG C in rapid, and finishing temperature is 897 DEG C in hot-rolled step；Coiling temperature is 598 DEG C；Acid pickling step
In straightening elongation percentage be 2.5%.
The invention provides the titaniferous acid-cleaning plate and its production method of a kind of function admirable, metatitanic acid is mainly contained by control
Board-washing rolling, cooling technique and pickling drawing-correcting technique, on the one hand effectively eliminate acid-cleaning plate yield point elongation, on the other hand increase original
Mobile dislocation density, so as to inhibit more low yield strength acid-cleaning plate cross breaks defect, with method is simple, low production cost, product
The advantages of product forming property and excellent welding performance.
Specific embodiment
A kind of titaniferous acid-cleaning plate of the present invention, is made up of following percentage by weight chemical composition：C≤0.05%, Si≤
0.05%, Mn≤0.40%, P≤0.025%, S≤0.025%, Ti≤0.03%, remaining is Fe and inevitable impurity.
Further, as preferred technical scheme, a kind of titaniferous acid-cleaning plate described above, by following percentage by weight
Chemical composition is constituted：C 0.01~0.05%, Si 0.01~0.05%, Mn 0.15~0.40%, P≤0.015%, S≤
0.010%, Ti 0.012~0.03%, remaining is Fe and inevitable impurity.
Further, as preferred technical scheme, a kind of titaniferous acid-cleaning plate described above, by following percentage by weight
Chemical composition is constituted：C 0.01~0.05%, Si 0.01~0.03%, Mn 0.15~0.39%, P 0.012~0.015%,
S 0.008~0.010%, Ti 0.012~0.025%, remaining is Fe and inevitable impurity.
Further, as preferred technical scheme, a kind of titaniferous acid-cleaning plate described above, by following percentage by weight
Chemical composition is constituted：C 0.05%, Si 0.02%, Mn 0.15%, P 0.012%, S 0.010%, Ti 0.019%, remaining
It is Fe and inevitable impurity.
A kind of titaniferous acid-cleaning plate described above, the 190~250MPa of yield strength of titaniferous acid-cleaning plate, tensile strength 300~
350MPa, elongation percentage >=45%.
A kind of preparation method of titaniferous acid-cleaning plate described above, the preparation method is mainly included the following steps that：Steel billet → heat
Roll → section cooling → batch → pickling；
Wherein, in hot-rolled step finish rolling start rolling temperature be 950~1050 DEG C, in hot-rolled step finishing temperature be 830~
900℃；Coiling temperature is 540~598 DEG C；Straightening elongation percentage in acid pickling step is 0.8~3.0%.
Further, as preferred technical scheme, a kind of preparation method of titaniferous acid-cleaning plate described above, hot rolling step
The start rolling temperature of finish rolling is 952~1048 DEG C in rapid, and finishing temperature is 834~897 DEG C in hot-rolled step；Coiling temperature is 545
~598 DEG C；Straightening elongation percentage in acid pickling step is 0.8~2.5%.
Further, as preferred technical scheme, a kind of preparation method of titaniferous acid-cleaning plate described above, hot rolling step
The start rolling temperature of finish rolling is 1048 DEG C in rapid, and finishing temperature is 897 DEG C in hot-rolled step；Coiling temperature is 598 DEG C；Acid pickling step
In straightening elongation percentage be 2.5%.
Wherein, finish rolling start rolling temperature is 950~1050 DEG C in the hot-rolled step, and temperature is too low, and rolling rhythm is too slow, raw
Produce efficiency low；Temperature is too high, and operation of rolling cooling velocity is too fast, uneven microstructure, causes finished product combination property poor.
Finishing temperature is 830~900 DEG C in the hot-rolled step, and temperature is too low, and ultra-thin gauge rolling stability is poor, is also easy to produce
Broken belt or surface defect；Temperature is too high, and cooling velocity is too fast, uneven microstructure, and is also easy to produce three iron scales.
The temperature batched in step is 540~598 DEG C, and temperature is too low, is also easy to produce bainite structure, and elongation percentage is low；
Temperature is too high, and finished product coarse grains, dislocation density is small.
Straightening elongation percentage in the acid pickling step is 0.5~3.0%, and elongation percentage is too low, does not have straightening scale breading effect；
Elongation percentage is too high, is also easy to produce processing hardening, deteriorates properties of product.
Compared to existing technology, the titaniferous acid-cleaning plate low intensity of present invention production, elongation percentage are high, and punching performance is excellent, also solves
Mild steel of having determined is also easy to produce the problem of cross breaks defect.
Specific embodiment of the invention is further described with reference to embodiment, is not therefore limited the present invention
System is among described scope of embodiments.
Embodiment 1
The chemical component weight percentage of steel billet is：C：0.01%, Si：0.01%, Mn：0.39%, P：0.015%, S：
0.009%, Ti：0.025%, remaining is Fe and inevitable impurity.
The preparation method of titaniferous acid-cleaning plate is mainly included the following steps that：Steel billet → hot rolling → section cooling → batch → acid
Wash：
Wherein, finish rolling start rolling temperature is 952 DEG C in hot-rolled step, and finishing temperature is 834 DEG C in hot-rolled step；Batch step
In temperature be 545 DEG C；Straightening elongation percentage in acid pickling step is 0.8%.
The mechanical property Rel of the titaniferous acid-cleaning plate of this method production：192MPa, Rm：300MPa, A%：50%；Surface matter
Amount is good.
Embodiment 2
The chemical component weight percentage of steel billet is：C：0.03%, Si：0.03%, Mn：0.20%, P：0.013%, S：
0.008%, Ti：0.012%, remaining is Fe and inevitable impurity.
The preparation method of titaniferous acid-cleaning plate is mainly included the following steps that：Steel billet → hot rolling → section cooling → batch → acid
Wash：
Wherein, finish rolling start rolling temperature is 1005 DEG C in hot-rolled step, and finishing temperature is 872 DEG C in hot-rolled step；Batch step
Temperature in rapid is 575 DEG C；Straightening elongation percentage in acid pickling step is 1.9%.
The mechanical property Rel of the titaniferous acid-cleaning plate of this method production：214MPa, Rm：319MPa, A%：49%；Surface matter
Amount is good.
Embodiment 3
The chemical component weight percentage of steel billet is：C：0.05%, Si：0.02%, Mn：0.15%, P：0.012%, S：
0.010%, Ti：0.019%, remaining is Fe and inevitable impurity.
The preparation method of titaniferous acid-cleaning plate is mainly included the following steps that：Steel billet → hot rolling → section cooling → batch → acid
Wash：
Wherein, finish rolling start rolling temperature is 1048 DEG C in hot-rolled step, and finishing temperature is 897 DEG C in hot-rolled step；Batch step
Temperature in rapid is 598 DEG C；Straightening elongation percentage in acid pickling step is 2.5%.
The mechanical property Rel of the titaniferous acid-cleaning plate of this method production：227MPa, Rm：334MPa, A%：48%；Surface matter
Amount is good.
Claims (4)
1. a kind of titaniferous acid-cleaning plate, is made up of following percentage by weight chemical composition：C 0.05%, Si 0.02%, Mn
0.15%, P 0.012%, S 0.010%, Ti 0.019%, remaining is Fe and inevitable impurity；
Its preparation method is mainly included the following steps that：Steel billet → hot rolling → section cooling → batch → pickling, wherein hot-rolled step
The start rolling temperature of middle finish rolling is 950~1050 DEG C, and finishing temperature is 830~900 DEG C in hot-rolled step；Coiling temperature be 540~
598℃；Straightening elongation percentage in acid pickling step is 0.8~3.0%；
190~the 250MPa of yield strength of titaniferous acid-cleaning plate, 300~350MPa of tensile strength, elongation percentage >=45%.
2. a kind of preparation method of titaniferous acid-cleaning plate described in claim 1, the method is mainly included the following steps that：Steel billet → hot rolling
→ section cooling → batch → pickling, it is characterised in that：The start rolling temperature of finish rolling is 950~1050 DEG C, hot rolling in hot-rolled step
Finishing temperature is 830~900 DEG C in step；Coiling temperature is 540~598 DEG C；Straightening elongation percentage in acid pickling step for 0.8~
3.0%.
3. a kind of preparation method of titaniferous acid-cleaning plate according to claim 2, it is characterised in that：Finish rolling opens in hot-rolled step
Temperature is rolled for 952~1048 DEG C, and finishing temperature is 834~897 DEG C in hot-rolled step；Coiling temperature is 545~598 DEG C；Pickling
Straightening elongation percentage in step is 0.8~2.5%.
4. a kind of preparation method of titaniferous acid-cleaning plate according to claim 2, it is characterised in that：Finish rolling opens in hot-rolled step
Temperature is rolled for 1048 DEG C, and finishing temperature is 897 DEG C in hot-rolled step；Coiling temperature is 598 DEG C；Straightening in acid pickling step extends
Rate is 2.5%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510861238.8A CN105441802B (en) | 2015-12-01 | 2015-12-01 | Titanium-containing acid pickling plate and preparation method thereof |
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| CN201510861238.8A CN105441802B (en) | 2015-12-01 | 2015-12-01 | Titanium-containing acid pickling plate and preparation method thereof |
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| CN105441802B true CN105441802B (en) | 2017-05-24 |
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| CN108213091B (en) * | 2017-10-16 | 2019-10-29 | 首钢集团有限公司 | A method of for eliminating target steel cross breaks defect |
| CN111151578B (en) * | 2020-01-19 | 2021-10-26 | 河钢股份有限公司承德分公司 | Method for eliminating transverse crease lines at head of low-carbon steel hot-rolled pickled plate |
| CN111659990B (en) * | 2020-06-12 | 2021-10-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for eliminating crystalline oxide on surface of welding joint |
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| KR20060028909A (en) * | 2004-09-30 | 2006-04-04 | 주식회사 포스코 | High strength cold rolled steel sheet excellent in shape freezability,and manufacturing method thereof |
| CN102732795A (en) * | 2012-05-31 | 2012-10-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-rolled pickled plate with excellent formability for automobile structure and production method thereof |
| CN102732794B (en) * | 2012-05-31 | 2014-08-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Hot-rolled pickled plate for Cr-containing automobile structure and production method thereof |
| CN104946969B (en) * | 2014-03-31 | 2017-02-15 | 上海梅山钢铁股份有限公司 | Hot-rolled pickled steel plate for air conditioner compressor housings and manufacturing method thereof |
| CN104480391B (en) * | 2014-11-24 | 2017-01-04 | 江苏省沙钢钢铁研究院有限公司 | A kind of hot rolling acid-cleaning plate and production method thereof |
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