CN108374128A - A kind of Steel material and preparation method thereof - Google Patents
A kind of Steel material and preparation method thereof Download PDFInfo
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- CN108374128A CN108374128A CN201810521973.8A CN201810521973A CN108374128A CN 108374128 A CN108374128 A CN 108374128A CN 201810521973 A CN201810521973 A CN 201810521973A CN 108374128 A CN108374128 A CN 108374128A
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- steel material
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- mass content
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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
-
- 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
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Abstract
The present invention provides a kind of Steel material, ingredient is：C：≤ 0.12wt%；Si：≤ 0.75wt%；Mn：≤ 1.5wt%；P：≤ 0.02wt%；S：≤ 0.008wt%；Cu：0.2~0.55wt%；Cr：0.3~1.25wt%；Ni：0.12~0.65wt%；V：≤ 0.1wt%；Nb：≤ 0.1wt%；Al：0.15~0.5wt%；Sb：0.03~0.4wt%；Surplus is Fe and inevitable impurity.The Al and Sb of certain content are added in Steel material provided by the invention simultaneously, Al and Sb have synergistic effect, under the collective effect of Al and Sb, the corrosion resistance of Steel material provided by the invention made to significantly improve.The present invention also provides a kind of preparation methods of Steel material.
Description
Technical field
The present invention relates to technical field of metal material more particularly to a kind of Steel material and preparation method thereof.
Background technology
Metallic material corrosion is the practical problem of a generally existing, and the wherein loss caused by atmospheric corrosion accounts for about whole
The half or so of metal erosion loss, massive losses are brought to national economy.It is counted according to developed country, every year because of steel material
Economic loss caused by corrosion accounts for about the 2%~4% of national economy total output value, and the whole world is every year because structural steel material corrodes
Caused economic loss has been up to hundreds billion of dollars or more, so the corrosion resistance of steel material in an atmosphere how is improved,
It is concerned.
The 1930s, the U.S. took the lead in developing Cor-Ten systems weathering steel, used till today, and holding is added less in steel
The alloying elements such as Cu, P, Cr and Ni of amount, it is about 50~100 μm so that it is formed a layer thickness between rusty scale and matrix surface
Dense product layer, the product layer belong to non-crystal oxide, strong with metallic matrix adhesion, surrounding medium can be prevented to steel
Matrix surface permeates, and slows down the corrosion tendency developed in depth and breadth to metallic matrix, to be remarkably improved the resistance to air of steel material
Corrosive power.The exploitation of China's weathering steel is started late with research, and Anshan iron and steel plant in 1961 starts to develop 16MnCu weathering steels, and combines
Domestic Resources feature develops the weathering steel containing elements such as Cu, P, Ti and RE；Wuhan Iron and Steel Company in 1969, section of the Ministry of Railways
It learns research institute and Qiqihar Vehicle Factory once developed 09MnCuPTi railway freight-car steel jointly；Since 1978, China with
The imitated external weather resisting steel of the elements such as nickel and chromium, and serial weathering steel kind is had developed in succession, make China's steel material
Atmospheric corrosion resistance and the performances such as comprehensive mechanics be improved.
But Cr contents are high in weathering steel in the prior art, production cost is higher, therefore, researches and develops a kind of Cr contents
Low and steel grade with good corrosion resistance becomes those skilled in the art's urgent problem to be solved.
Invention content
In view of this, the purpose of the present invention is to provide a kind of Steel material and preparation method thereof, steel provided by the invention
Cr contents are low in material and have good corrosion resistance, production cost low.
The present invention provides a kind of Steel material, ingredient is：
C：≤ 0.12wt%；
Si：≤ 0.75wt%；
Mn：≤ 1.5wt%；
P：≤ 0.02wt%；
S：≤ 0.008wt%；
Cu：0.2~0.55wt%；
Cr：0.3~1.25wt%；
Ni：0.12~0.65wt%；
V：≤ 0.1wt%；
Nb：≤ 0.1wt%；
Al：0.15~0.5wt%；
Sb：0.03~0.4wt%；
Surplus is Fe and inevitable impurity.
In the present invention, the mass content of the C is preferably 0.01~0.1wt%, more preferably 0.02~0.08wt%,
More preferably 0.03~0.06wt%, most preferably 0.04~0.05wt%.
In the present invention, the mass content of the Si is preferably 0.1~0.7wt%, more preferably 0.2~0.6wt%, most
Preferably 0.3~0.5wt%.
In the present invention, the mass content of the Mn is preferably 0.1~1.4wt%, more preferably 0.3~1.1wt%, more
Preferably 0.5~0.8wt%, most preferably 0.6~0.7wt%.
In the present invention, the mass content of the P is preferably 0.01~0.015wt%, more preferably 0.012~
0.013wt%.
In the present invention, the mass content of the S is preferably 0.001~0.008wt%, more preferably 0.002~
0.007wt%, more preferably 0.003~0.006wt%, most preferably 0.004~0.005wt%.
In the present invention, the mass content of the Cu is preferably 0.25~0.5wt%, more preferably 0.3~0.45wt%,
Most preferably 0.35~0.4wt%.
In the present invention, the mass content of the Cr is preferably 0.35~1.2wt%, more preferably 0.4~1wt%, more
Preferably 0.5~0.8wt%, most preferably 0.6~0.7wt%.
In the present invention, the mass content of the Ni is preferably 0.15~0.6wt%, more preferably 0.2~0.5wt%,
Most preferably 0.3~0.4wt%.
In the present invention, the mass content of the V is preferably 0.01~0.08wt%, more preferably 0.03~
0.07wt%, most preferably 0.04~0.06wt%.
In the present invention, the mass content of the Nb is preferably 0.01~0.08wt%, more preferably 0.03~
0.07wt%, most preferably 0.04~0.06wt%.
In the present invention, the mass content of the Al is preferably 0.2~0.45wt%, more preferably 0.25~0.4wt%,
Most preferably 0.3~0.35wt%.
In the present invention, the mass content of the Sb is preferably 0.05~0.35wt%, more preferably 0.1~0.3wt%,
Most preferably 0.15~0.25wt%.
In the present invention, the ingredient of the Steel material is preferably：
C：0.06~0.09%；Si：0.25~0.35%；Mn：1~1.2%；P：0.002~0.006%；S：0.003~
0.005%；Cu：0.3~0.35%；Cr：0.48~0.55%；Ni：0.2~0.23%；Sb：0.05~0.35%；Al：0.15
~0.45wt%；V：0.04~0.06%；Nb：0.02~0.025%, surplus is Fe and inevitable impurity.
The Al and Sb of certain content are added in Steel material provided by the invention simultaneously, Al and Sb have synergistic effect, in Al
Under the collective effect of Sb, the corrosion resistance of Steel material provided by the invention is made to significantly improve.Compared with prior art, the present invention carries
Cr contents substantially reduce while having good corrosion resistance in the Steel material of confession.Steel material provided by the invention not only has good
Good atmospheric corrosion resistance ability, the also ability with the corrosion of good acidic mediums.
Its manufacturing cost ratio of Steel material provided by the invention Q450EWR1 is substantially reduced, corrosion resistance ratio Q450NQR1
It doubles, the corrosion resistance than Q450EWR1 improves 20% or more, and especially corrosion resistance is superior in acid medium.This hair
For the Steel material of bright offer by adding Al and Sb elements simultaneously and reducing the dosages of Cr elements, Al and Sb have a synergistic effect, and two
Person, which interacts, can significantly improve the corrosion resistance of Steel material, simultaneously, moreover it is possible to the production cost of Steel material be greatly reduced.
The present invention provides a kind of preparation methods of Steel material, including：
Alloy raw material is subjected to melting and casting, obtains Steel material.
The present invention does not have the type of the alloy raw material and source special limitation, using known to those skilled in the art
The alloy raw material that can obtain target component, the present invention can be used the sources C, the sources Si, the sources Mn, the sources P, the sources S, the sources Cu, the sources Cr,
The sources Ni, the sources V, the sources Nb, the sources Al, the sources Sb and the sources Fe carry out melting.The present invention does not have the method for the melting special limitation, adopts
With the method for smelting well known to those skilled in the art for preparing steel, it is molten that converter, electric furnace or vaccum sensitive stove such as can be used
Refining.The present invention does not have the method for the casting special limitation, and Steel material mistake is prepared using well known to those skilled in the art
Casting method in journey.
In the present invention, the ingredient of the Steel material is consistent with the ingredient of Steel material described in above-mentioned technical proposal, herein not
It repeats again.In the present invention, after the completion of the casting, preferably further include：
Obtained steel billet is subjected to hot rolling and cooling, obtains Steel material.
In the present invention, the Steel material is preferably hot-strip.In the present invention, the ingredient of the steel billet and above-mentioned skill
The ingredient of Steel material described in art scheme is consistent, and details are not described herein.
The present invention does not have the method for the hot rolling special limitation, and steel band is prepared using well known to those skilled in the art
The conventional techniques of hot rolling in the process.In the present invention, the temperature of the hot rolling is preferably 800~1250 DEG C, more excellent
It is selected as 850~1200 DEG C, most preferably 850~1150 DEG C.The present invention does not have the passage of the hot rolling special limitation, ability
Field technique personnel can carry out the steel plate that multi- pass rolling obtains required thickness according to practical condition.
The present invention does not have the method for the cooling special limitation, and steel band is prepared using well known to those skilled in the art
Cooling conventional techniques in the process.In the present invention, the temperature of the cooling is preferably 500~700 DEG C, more preferably
It is 540~680 DEG C, most preferably 580~660 DEG C.In the present invention, the method for the cooling is preferably water cooling.
In the present invention, after the completion of the cooling, preferably further include：
Product after cooling is batched, Steel material is obtained.
The present invention does not have special limitation to the method batched, and steel band is prepared using well known to those skilled in the art
The conventional techniques batched in the process.
The preparation method of Steel material provided by the invention is simple for process, and production cost is relatively low.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff it is improved or retouching all other example, shall fall within the protection scope of the present invention.
Embodiment 1
Alloy raw material is subjected to melting and casting, obtains the steel billet of target component：C：0.07wt%, Si：0.35wt%,
Mn：1.14wt%, P：0.003wt%, S：0.004wt%, Cr：0.53wt%, Ni：0.22wt%, Cu：0.3wt%, V：
0.05wt%, Nb：0.023wt%, Al：0.15wt%；Sb：0.05wt%, surplus are Fe and inevitable impurity.
Obtained steel billet is subjected to hot rolling, cooling and is batched, Steel material is obtained；
The start rolling temperature of the hot rolling is 1150 DEG C, and the more to secondary hot rolling of process obtains the steel plate that thickness is 6mm；
The method of the cooling is water cooling, and the temperature of the cooling is 600 DEG C.
Using TB/T 2375-1993《Railway weathering steel alternate-immersion test method》Standard, detection the present invention
The atmospheric corrosion resistance for the Steel material that embodiment 1 is prepared.Testing result is：The steel that the embodiment of the present invention 1 is prepared
The relatively corrosive rate of material atmospheric corrosion resistance is 25%.
Using the acid resistance corrosive nature for the Steel material that the immersion test test embodiment of the present invention 1 is prepared, specific side
Method is：
The Steel material that the embodiment of the present invention 1 is prepared is immersed in the sulfuric acid that mass concentration is 20% at ambient temperature
Continue 24 hours in solution.
Testing result is that the acid corrosion-resistant performance for the Steel material that the embodiment of the present invention 1 is prepared into is 15%.
Embodiment 2
Steel material is prepared according to method described in embodiment 1, difference lies in the ingredient of steel billet is with embodiment 1：
C：0.08wt%, Si：0.32wt%, Mn：1.07wt%, P：0.004wt%, S：0.004wt%, Cr：0.49wt%, Ni：
0.21wt%, Cu：0.33wt%, V：0.05wt%, Nb：0.025wt%, Al：0.26wt%；Sb：0.15wt%, surplus Fe
And inevitable impurity.
The performance for the Steel material that the embodiment of the present invention 2 is prepared according to the method for embodiment 1 is detected, detection knot
Fruit is the Steel material atmospheric corrosion resistance that the embodiment of the present invention 2 is prepared：Relatively corrosive rate is 23%；Acid-resistant corrosion
Can be 13%.
Embodiment 3
Steel material is prepared according to method described in embodiment 1, difference lies in the ingredient of steel billet is with embodiment 1：
C：0.07wt%, Si：0.27wt%, Mn：1.13wt%, P：0.005wt%, S：0.004wt%, Cr：0.53wt%, Ni：
0.21wt%, Cu：0.32wt%, V：0.05wt%, Nb：0.025wt%, Al：0.45wt%, Sb：0.35wt%, surplus Fe
And inevitable impurity.
The performance for the Steel material that the embodiment of the present invention 3 is prepared according to the method for embodiment 1 is detected, detection knot
Fruit is the Steel material atmospheric corrosion resistance that the embodiment of the present invention 3 is prepared：Relatively corrosive rate is 21%；Acid-resistant corrosion
Can be 10%.
Comparative example 1
Steel material is prepared according to method described in embodiment 1, difference lies in using Q450EWR1 with embodiment 1
Steel billet, ingredient are：C：0.02wt%, Si：0.34wt%, Mn：0.95wt%, P：0.005wt%, S：0.002wt%, Cr：
3.7wt%, Ni：0.35wt%, Cu：0.5wt%, V：0.03wt%, Nb：0.025wt%, surplus be Fe and inevitably it is miscellaneous
Matter.
The performance for the Steel material that comparative example 1 of the present invention is prepared according to the method for embodiment 1 is detected, detection knot
Fruit is the Steel material atmospheric corrosion resistance that comparative example 1 of the present invention is prepared：Relatively corrosive rate is 30%；Acid-resistant corrosion
Can be 43%.
Comparative example 2
Steel material is prepared according to method described in embodiment 1, difference lies in using Q450NQR1 with embodiment 1
Steel billet, ingredient are：C：0.06wt%, Si：0.33wt%, Mn：1.12wt%, P：0.006wt%, S：0.005wt%, Cr：
0.52wt%, Ni：0.28wt%, Cu：0.42wt%, V：0.04wt%, Nb：0.025wt%, surplus is for Fe and inevitably
Impurity.
The performance for the Steel material that comparative example 2 of the present invention is prepared according to the method for embodiment 1 is detected, detection knot
Fruit is the Steel material atmospheric corrosion resistance that comparative example 2 of the present invention is prepared：Relatively corrosive rate is 50%；Acid-resistant corrosion
Can be 62%.
Comparative example 3
Steel material is prepared according to method described in embodiment 1, difference lies in Al in steel billet ingredient with embodiment 1
Mass content be 0.2wt%, be free of Sb.
The performance for the Steel material that comparative example 3 of the present invention is prepared according to the method for embodiment 1 is detected, detection knot
Fruit is the Steel material atmospheric corrosion resistance that comparative example 3 of the present invention is prepared：Relatively corrosive rate is 35%；Acid-resistant corrosion
Can be 25%.
Comparative example 4
Steel material is prepared according to method described in embodiment 1, difference lies in Sb in steel billet ingredient with embodiment 1
Mass content be 0.2wt%, be free of Al.
The performance for the Steel material that comparative example 4 of the present invention is prepared according to the method for embodiment 1 is detected, detection knot
Fruit is the Steel material atmospheric corrosion resistance that comparative example 4 of the present invention is prepared：Relatively corrosive rate is 31%；Acid-resistant corrosion
Can be 22%.
As seen from the above embodiment, the present invention provides a kind of Steel material, ingredient is：C：≤ 0.12wt%；Si：≤
0.75wt%；Mn：≤ 1.5wt%；P：≤ 0.02wt%；S：≤ 0.008wt%；Cu：0.2~0.55wt%；Cr：0.3~
1.25wt%；Ni：0.12~0.65wt%；V：≤ 0.1wt%；Nb：≤ 0.1wt%；Al：0.15~0.5wt%；Sb：0.03
~0.4wt%；Surplus is Fe and inevitable impurity.In Steel material provided by the invention simultaneously add certain content Al and
Sb, Al and Sb have synergistic effect, under the collective effect of Al and Sb, the corrosion resistance of Steel material provided by the invention are made significantly to carry
It is high.
What has been described above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill of the art
For personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of Steel material, ingredient are：
C：≤ 0.12wt%；Si：≤ 0.75wt%；Mn：≤ 1.5wt%；P：≤ 0.02wt%；S：≤ 0.008wt%；Cu：0.2
~0.55wt%；Cr：0.3~1.25wt%；Ni：0.12~0.65wt%；V：≤ 0.1wt%；Nb：≤ 0.1wt%；Al：
0.15~0.5wt%；Sb：0.03~0.4wt%；Surplus is Fe and inevitable impurity.
2. Steel material according to claim 1, which is characterized in that the mass content of the C is 0.06~0.09%；It is described
The mass content of Si is 0.25~0.35%；The mass content of the Mn is 1~1.2%.
3. Steel material according to claim 1, which is characterized in that the mass content of the P is 0.002~0.006%；Institute
The mass content for stating S is 0.003~0.005%.
4. Steel material according to claim 1, which is characterized in that the mass content of the Cu is 0.3~0.35%；It is described
The mass content of Cr is 0.48~0.55%.
5. Steel material according to claim 1, which is characterized in that the mass content of the Ni is 0.2~0.23%；It is described
The mass content of Sb is 0.05~0.35%；The mass content of the Al is 0.15~0.45wt%.
6. Steel material according to claim 1, which is characterized in that the mass content of the V is 0.04~0.06%；It is described
The mass content of Nb is 0.02~0.025%.
7. a kind of preparation method of Steel material described in claim 1, including：
Alloy raw material is subjected to melting and casting, obtains Steel material；The ingredient of the Steel material is：
C：≤ 0.12wt%；Si：≤ 0.75wt%；Mn：≤ 1.5wt%；P：≤ 0.02wt%；S：≤ 0.008wt%；Cu：0.2
~0.55wt%；Cr：0.3~1.25wt%；Ni：0.12~0.65wt%；V：≤ 0.1wt%；Nb：≤ 0.1wt%；Al：
0.15~0.5wt%；Sb：0.03~0.4wt%；Surplus is Fe and inevitable impurity.
8. the method according to the description of claim 7 is characterized in that after the completion of the casting, further include：
Obtained steel billet is subjected to hot rolling and cooling, obtains Steel material.
9. according to the method described in claim 8, it is characterized in that, the temperature of the hot rolling is 800~1250 DEG C.
10. according to the method described in claim 8, it is characterized in that, the temperature of the cooling is 500~700 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110551947A (en) * | 2019-10-21 | 2019-12-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Weather-resistant steel and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107299297A (en) * | 2017-07-12 | 2017-10-27 | 攀钢集团攀枝花钢铁研究院有限公司 | High strength anti-corrosion hot rolled steel plate and its casting method and milling method |
-
2018
- 2018-05-28 CN CN201810521973.8A patent/CN108374128A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299297A (en) * | 2017-07-12 | 2017-10-27 | 攀钢集团攀枝花钢铁研究院有限公司 | High strength anti-corrosion hot rolled steel plate and its casting method and milling method |
Non-Patent Citations (2)
| Title |
|---|
| 刘战英: "《轧钢》", 31 August 1999, 冶金工业出版社 * |
| 甄丽萍: "《金属材料热加工技术》", 30 September 2009, 冶金工业出版社 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110551947A (en) * | 2019-10-21 | 2019-12-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Weather-resistant steel and preparation method thereof |
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