CN107868885A - A kind of abros and its slab production method - Google Patents
A kind of abros and its slab production method Download PDFInfo
- Publication number
- CN107868885A CN107868885A CN201610853166.7A CN201610853166A CN107868885A CN 107868885 A CN107868885 A CN 107868885A CN 201610853166 A CN201610853166 A CN 201610853166A CN 107868885 A CN107868885 A CN 107868885A
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- China
- Prior art keywords
- abros
- production method
- slab
- continuous casting
- slab production
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a kind of steel of abros and its continuous casting manufacturing technique of slab, wherein, percentage, the composition of the steel is C：0.01~0.2%, Si≤1.5%, Mn≤2.0%, Cr：17~26%, N≤0.3%, Ti：0.35~0.9%, Al：0.25~0.5%, B≤0.03%, Zr≤0.5%, Mo+W:3~6%, W≤3.0%, Co≤4.0%, Nb：≤ 0.05%, Fe：0~22%, surplus is Ni and inevitable impurity.
Description
Technical field
The present invention relates to a kind of abros and its slab production method, belong to metallurgical technology field.
Background technology
The existing history for many years of production of abros, wherein, famous foreign metallurgical production enterprise has：The U.S.
Special Metals, Haynes and Carpenter, German Thyssen Krupp VDM, French INDUSTEEL companies
And Japanese metallurgy etc..The Special Metals in the U.S. are one very powerful in high temperature alloy and corrosion resistant alloy field
Company, the said firm develops multiple serial corrosion resistant alloys；The Haynes companies in the U.S. are at superelevation alloy (high Mo, cobalt-based etc.)
Walked in the exploitation of corrosion resistant alloy kind in the forefront in the world；Steel ingot of the Special Metals and Haynes companies in high alloy
Vacuum or electric arc furnaces → electroslag remelting process base are used in preparation, its product possesses excellent inherent quality and usability
Energy.The history of Thyssen Krupp (VDM) the exploitation abros strip product existing decades of Germany, has squeezed life experience circle
The row of the main manufacturer of high-performance metal materials.Japanese Usiminas is led with the technical concept of low cost in nickel-base alloy sheet material
Domain possesses the extremely strong market competitiveness, because it uses continuous casting process to carry out corrosion resistant alloy sheet billet continuous casting, have lumber recovery high and
The advantages such as process is short, have higher competitive advantage, but the product matter on high-alloying product with respect to American-European countries's main enterprises
Not as good as American-European enterprise in amount.
Abros has full austenite microscopic structure.Abros is all solution strengthening state.Close part
Gold adds effective hardening element, and the intensity of alloy is improved such as Mo and Cu.Also using several microalloy elements of addition Al, Ti etc. come
Reinforced alloys matrix, to ensure that abros has the performance of design requirement.However, part kind addition Mo and Cu etc. is closed
Gold dramatically increases cost into branch, and can also increase the difficulty of production technology.Table 1 give the chemistry of related typical steel grade into
Point.
The chemical composition (wt%) of the related typical steel grade of table 1
As continuous casting technology is progressively applied in the production of special steel by world steel metallurgical production, external advanced enterprises have been adopted
Specific alloy product is produced with slab caster, and obtains significant success.However, abros fusing point is more at 1400 DEG C
Hereinafter, 100 DEG C lower than carbon steel fusing point or so, wherein, 100 DEG C or so the You Ge inductiles areas below fusing point, this region continuous casting
Easily cracked in cooling procedure.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of abros, its have higher plasticity with it is resistance to
The more low advantage of corrosion energy, production cost.
Its technical problem to be solved can be implemented by the following technical programs.
A kind of steel of abros, percentage, are made up of following element：
C：0.01~0.2%
Si≤1.5%
Mn≤2.0%
Cr：17~26%
N≤0.3%
Ti：0.35~0.9%
Al：0.25~0.5%
B≤0.03%
Zr≤0.5%
Mo+W:3~6%
W≤3.0%
Co≤4.0%
Nb：≤ 0.05%
Fe：0~22%
Surplus is Ni and inevitable impurity.
Preferably, in the steel grades,
C：0.01~0.1%
Si≤1.5%
Mn≤2.0%
Cr：18~24%
N≤0.25%
Ti：0.35~0.9%
Al：0.25~0.45%
B≤0.02%
Zr≤0.5%
Mo+W:3~6%
W≤3.0%
Co≤4.0%
Nb：≤ 0.05%
Fe：0~22%
Surplus is Ni and inevitable impurity.
The advantages of above-mentioned preferred embodiment, is can help under severe Service Environment, improves the corrosion resistance of product
Energy.
Above-mentioned abros steel provided by the invention, it is using Ni-Cr or Ni-Cr-Fe as matrix, plus some reinforcings
Element, there is excellent performance in high temperature and corrosion-resistant environment.
Another technical problem to be solved by this invention is that foregoing abros continuous casting can be improved by providing one kind
The slab production method of base quality, its feature are：Using continuous casting process, the continuous casting process includes process conditions in detail below：
A, the degree of superheat of molten steel is controlled at 15~60 DEG C in tundish.When the degree of superheat of casting process molten steel is less than 15 DEG C,
Molten steel flow is poor, easily causes mold gap to freeze steel, force cast to be interrupted, and covering slag fusing effect is bad；Molten steel mistake
Initial solidification shell is relatively thin when temperature is higher than 60 DEG C, in continuous cast mold, crack tendence is big, and causes that setting time is long, choosing point knot
It is brilliant fully, the segregation of aggravation strand with it is loose.
B, average pull rate control is in 0.4~1.5m/min.When average pull rate is higher than 1.50m/min, initial solidification shell is relatively thin, casting
Base inhomogeneous cooling is even, easily produces longitudinal crack or even bleed-out；When average pull rate is less than 0.40m/min, strand is in crystallizer
Cool time is long, and molten steel is in low-temperature condition at meniscus, and covering slag fusing effect is bad, easily triggers lobe, and influence
Conticaster overall throughput.
C, insertion depth control in the continuous cast mold mouth of a river is in 80~125mm.Mold gap insertion depth is excessively shallow, mouth of a river stream
Impact of the stock to slag interface is then relatively strong, increase molten steel and crystallizer protecting residue reaction probabilities, while it is general to increase meniscus slag
Rate；Mold gap insertion is too deep, and strand is then also easy to produce crackle.
D, electromagnetic mixing apparatus is opened after continuous casting starts；
E, dynamic soft-reduction technique is used in casting blank solidification end.
Caused it may be segregated with loose for the high degree of superheat of casting process molten steel to improve, two cold-zones of present invention increase
Electromagnetic agitation and dynamic soft-reduction technique.
As the further improvement of the slab production method, in addition to casting billet surface carry out reconditioning the step of, wherein, casting
The reconditioning quality of base one side is controlled in 3~10mm.Because abros continuous casting billet surface can have different degrees of localized indentation
Fall into, pit, deep oscillation mark the defects of, subsequent hot rolled and cold-rolled products surface quality can be influenceed.Therefore, thinning technique is used to strand
It will be helpful to alleviate drawbacks described above.And strand one side reconditioning quality is less than 3mm, it is possible to can not fully erased clean defect；It is if single
Face reconditioning quality is higher than 10mm, then influences the lumber recovery of strand.
The further improvement of the slab production method is also served as, the slighter compress drafts is 3~10mm；It is preferred that 4~
8mm.The stir current of the electromagnetic agitation technique is 1000~2000A；It is preferred that 1200~1800A.Electromagnetic agitation current strength
Less than 1000A, slighter compress drafts is less than 3mm, then does not have effect for improving strand center mass；Electromagnetic agitation electric current is strong
Degree is higher than 2000A, then liquid level fluctuation of crystallizer is larger and negative segregation easily occurs for strand；The drafts of slighter compress is more than 10mm, casting
Then easily bulge occurs for base leptoprosopy, casting billet surface easily cracks.
Further improvement as this slab production method again, in the continuous casting working procedure, slab thickness be 150~
200mm, the slab section that width of plate slab is 600~1500mm, the average pull rate of continuous casting are controlled in 0.4~1.0m/min.
As one of the preferred embodiments of the present invention, in the continuous casting working procedure, the degree of superheat control of molten steel in the tundish
System is at 25~50 DEG C.
Also serve as one of the preferred embodiments of the present invention, the control of continuous cast mold mouth of a river insertion depth 90~
120mm。
Also as one of the preferred embodiments of the present invention, the reconditioning quality of the strand one side is preferably controlled in 5~8mm.
Compared with prior art, the abros sheet billet continuous casting production method that the present invention develops, has continuous casting billet table
It is the features such as face and good center mass, also favourable to improving continuous casting billet quality.This technology is to realize abros sheet billet continuous casting
Production and the key technology of quality assurance.
The slab production method, which realizes, successfully develops qualified nickle-base corrosion-resisting continuous casting steel billet using continuous casting process, with biography
System uses two-link smelting process (vacuum induction+electroslag；Electric furnace+electroslag) compare, there is low cost, high efficiency, high yield etc.
Significant advantage.
Embodiment
With reference to embodiment, the invention will be further described, but protection scope of the present invention is not only limited to implement
Example.
The present invention common six embodiments of mistake further illustrate that the firm diction element of abros is matched somebody with somebody in each embodiment
Than see being enumerated in table 2, in addition to each element enumerated, should also include inevitable impurity.Each reality is also enumerated in table
Apply slab cross dimensions of the example in the continuous casting working procedure；And the average degree of superheat of molten steel in tundish, continuous casting average pull rate,
Continuous cast mold mouth of a river insertion depth.Also include the drafts of two chill space electromagnetic stirring electric currents and dynamic soft-reduction.Simultaneously
Casting billet surface reconditioning quality is enumerated.Specifically refer to table 2 below.Meanwhile the control to each data in table then reflects this
The related process feature of alloy continuous casting producing method.
Compared with prior art, the abros sheet billet continuous casting production method that the present invention develops, has continuous casting billet table
The features such as face and good center mass, the advantage of continuous casting can be given full play to, the depression and crackle that can suppress strand produce, and show
Write and improve casting billet surface and center mass, and sequence casting can be realized, production efficiency increases substantially, and production cost significantly drops
It is low.This technology is to realize the key technology of the production of abros sheet billet continuous casting and quality assurance.To using continuous casting process stream
The enterprise development nickel-base alloy kind and optimize technique that Cheng Shixian is produced and tested have application value very much, improve production
Can, production cost is reduced, enhances the synthesized competitiveness of enterprise.
Table 2：The technological parameter and its implementation result of various embodiments of the present invention
Finally it should be noted that：Above example only not limits technology described in the invention to illustrate the present invention
Scheme；Therefore, although this specification with reference to above-mentioned each embodiment to present invention has been detailed description, this
Field it is to be appreciated by one skilled in the art that still can be modified to the present invention or equivalent substitution；And all do not depart from this
The technical scheme of the spirit and scope of invention and its improvement, it all should cover in scope of the presently claimed invention.
Claims (11)
1. a kind of steel of abros, percentage, are made up of following element：
C：0.01~0.2%
Si≤1.5%
Mn≤2.0%
Cr：17~26%
N≤0.3%
Ti：0.35~0.9%
Al：0.25~0.5%
B≤0.03%
Zr≤0.5%
Mo+W:3~6%
W≤3.0%
Co≤4.0%
Nb：≤ 0.05%
Fe：0~22%
Surplus is Ni and inevitable impurity.
2. the steel of abros according to claim 1, it is characterised in that in the steel grades,
C：0.01~0.1%
Si≤1.5%
Mn≤2.0%
Cr：18~24%
N≤0.25%
Ti：0.35~0.9%
Al：0.25~0.45%
B≤0.02%
Zr≤0.5%
Mo+W:3~6%
W≤3.0%
Co≤4.0%
Nb：≤ 0.05%
Fe：0~22%
Surplus is Ni and inevitable impurity.
3. a kind of slab production method of abros as claimed in claim 1 or 2, it is characterised in that using continuous casting work
Skill, the continuous casting process include process conditions in detail below：
A, the degree of superheat of molten steel is controlled at 15~60 DEG C in tundish；
B, average pull rate control is in 0.4~1.5m/min；
C, insertion depth control in the continuous cast mold mouth of a river is in 80~125mm；
D, electromagnetic mixing apparatus is opened after continuous casting brings into operation；
E, dynamic soft-reduction technique is used in casting blank solidification end.
4. the slab production method of abros according to claim 3, it is characterised in that also include to casting billet surface
The step of carrying out reconditioning, wherein, the reconditioning quality of strand one side is controlled in 3~10mm.
5. the slab production method of abros according to claim 3, it is characterised in that the slighter compress drafts
For 3~10mm；The stir current of the electromagnetic agitation technique is 1000~2000A.
6. the slab production method of abros according to claim 3, it is characterised in that in the continuous casting working procedure
In, in the slab section that slab thickness is 150~200mm, width of plate slab is 600~1500mm, the average pull rate of continuous casting controls
In 0.4~1.0m/min.
7. the slab production method of abros according to claim 3, it is characterised in that in the continuous casting working procedure,
The degree of superheat of molten steel is controlled at 25~50 DEG C in the tundish.
8. the slab production method of abros according to claim 3, it is characterised in that the continuous cast mold water
Mouth insertion depth control is in 90~120mm.
9. the slab production method of abros according to claim 5, it is characterised in that the slighter compress pressure
Measure as 4~8mm.
10. the slab production method of abros according to claim 5, it is characterised in that the electromagnetic agitation electricity
Flow for 1200~1800A.
11. the slab production method of abros according to claim 3, it is characterised in that the strand one side
Reconditioning quality is controlled in 5~8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853166.7A CN107868885A (en) | 2016-09-26 | 2016-09-26 | A kind of abros and its slab production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853166.7A CN107868885A (en) | 2016-09-26 | 2016-09-26 | A kind of abros and its slab production method |
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| Publication Number | Publication Date |
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| CN107868885A true CN107868885A (en) | 2018-04-03 |
Family
ID=61752087
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610853166.7A Pending CN107868885A (en) | 2016-09-26 | 2016-09-26 | A kind of abros and its slab production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482871A (en) * | 2018-12-27 | 2019-03-19 | 马鞍山中科冶金材料科技有限公司 | Silicochromium titanium alloy and preparation method thereof |
| CN114134368A (en) * | 2021-11-18 | 2022-03-04 | 上海康晟航材科技股份有限公司 | High-temperature alloy for laser cutting nozzle and preparation method thereof |
Citations (3)
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|---|---|---|---|---|
| CN101613833A (en) * | 2008-06-25 | 2009-12-30 | 宝山钢铁股份有限公司 | Peracidity deep-well Ni base alloy tubing and casing and manufacture method |
| CN101708537A (en) * | 2009-11-28 | 2010-05-19 | 山西太钢不锈钢股份有限公司 | Austenitic heat-resistant stainless steel continuous casting method |
| CN103946403A (en) * | 2011-11-15 | 2014-07-23 | 新日铁住金株式会社 | Seamless austenite heat-resistant alloy tube |
-
2016
- 2016-09-26 CN CN201610853166.7A patent/CN107868885A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613833A (en) * | 2008-06-25 | 2009-12-30 | 宝山钢铁股份有限公司 | Peracidity deep-well Ni base alloy tubing and casing and manufacture method |
| CN101708537A (en) * | 2009-11-28 | 2010-05-19 | 山西太钢不锈钢股份有限公司 | Austenitic heat-resistant stainless steel continuous casting method |
| CN103946403A (en) * | 2011-11-15 | 2014-07-23 | 新日铁住金株式会社 | Seamless austenite heat-resistant alloy tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482871A (en) * | 2018-12-27 | 2019-03-19 | 马鞍山中科冶金材料科技有限公司 | Silicochromium titanium alloy and preparation method thereof |
| CN114134368A (en) * | 2021-11-18 | 2022-03-04 | 上海康晟航材科技股份有限公司 | High-temperature alloy for laser cutting nozzle and preparation method thereof |
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Application publication date: 20180403 |