CN106903281A - A kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate - Google Patents
A kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate Download PDFInfo
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- CN106903281A CN106903281A CN201710092918.7A CN201710092918A CN106903281A CN 106903281 A CN106903281 A CN 106903281A CN 201710092918 A CN201710092918 A CN 201710092918A CN 106903281 A CN106903281 A CN 106903281A
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- Prior art keywords
- coating
- copper plate
- crystallizer
- wear
- resistance
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Classifications
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- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/059—Mould materials or platings
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
Abstract
The present invention relates to a kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate, it includes, it includes copper plate of crystallizer matrix, it is characterised in that：The surface of described copper plate of crystallizer matrix is provided with cladding layer obtained in laser melting coating, described cladding layer includes top ceramic coating and lower metal coating, the thickness of described top ceramic coating is 0.2 0.5mm, the thickness of described lower metal coating is 0.5 2.5mm, and the present invention has the advantages that crystallizer service life can be extended, improves conticaster operating efficiency, slab quality and yield in a word.
Description
Technical field
The invention belongs to continuous casting equipment technical field, and in particular to a kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper
Plate.
Background technology
Copper plate of crystallizer as continuous casting key equipment, operating condition is very harsh, and its technical performance will be directly affected
To slab quality and operating rate.In continuous casting, copper plate of crystallizer inner surface upper area directly with high-temperature molten steel, melting
Covering slag is contacted, and during casting, copper plate of crystallizer inner surface top is washed away by high-temperature molten steel, corrosion function, in such environment
Under, it is desirable to copper plate of crystallizer upper strength is high and with outstanding corrosion-resistant property, while there is certain heat-blocking action, because
For now temperature is high, if radiating is too fast, the quality of strand can be substantially reduced：（1）Heat conduction is too fast, and thermograde is excessive so that
The tendency of column crystal substantially increases in casting blank solidification tissue, so as to deteriorate slab quality；（2）The thickness of continuous casting shell being initially formed
Inequality, the defect such as easily cracks.And the heat conductivility that crystallizer middle and lower part needs, so could be in the work of cooling water
With the lower strand for forming stabilization, while lower contacts is the strand being cooled into, produced between strand and crystallizer copper plate surface
The huge force of sliding friction of life, therefore, copper plate of crystallizer bottom requires good heat conductivity, and with high rigidity become reconciled it is wear-resisting
Property, copper and copper alloy can not meet properties described above requirement, it must be surface-treated.At present, for crystallizer copper
Existing kinds of surface processing method (mainly having plating, thermal spraying, thermo-chemical treatment, laser melting coating etc.) of plate, but plating and heat
Spraying environmental pollution is serious, and mechanical bond is belonged between coating and matrix, and coating is easy to fall off, and hardness is not high, wearability
Difference；It is metallurgical binding between thermo-chemical treatment infiltration layer and matrix, but occurs that copper penetrates into steel ingot in the application, can serious shadow
Ring the quality of steel billet.The appearance of laser melting and coating technique, to overcome these technological difficulties to provide new energy source and resolving ideas.
Laser melting coating is radiated using high energy laser beam, and by rapid fusing, extension and solidification, in matrix surface cladding, one layer has spy
The material of different physics, chemistry or mechanical property, constitutes a kind of new composite, this to make up performance lacking in matrix
Composite can give full play to both advantages, make up mutual deficiency.Existing copper plate of crystallizer surface laser cladding is closed
The technology copper coin surface at bronze end be single metal coating (Ni bases, Co and or both the alloy coat of phase composition etc.),
The requirement of the resistant to corrosion, low heat conductivity on copper coin surface top can not be met；Have plenty of and be prepared for ceramic coating on copper coin surface, reach
Arrive high intensity, resistant to corrosion, wear-resistant, upper surface low heat conductivity target, but lower surface ceramic poor performance, serious shadow
The formation of stabilization strand is rung, deviating from the essence of rapid shaping.
The content of the invention
Can extend crystallizer and use the longevity the invention aims to overcoming the deficiencies in the prior art, and providing one kind
The wear-resistant gradient of the resistance to heat etching coating crystallizer copper of the copper plate of crystallizer of life, raising conticaster operating efficiency, slab quality and yield
Plate.
The object of the present invention is achieved like this：A kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate, it includes, it is wrapped
Include copper plate of crystallizer matrix, it is characterised in that：The surface of described copper plate of crystallizer matrix is provided with obtained in laser melting coating melts
Coating, described cladding layer includes top ceramic coating and lower metal coating, and the thickness of described top ceramic coating is
0.2-0.5mm, the thickness of described lower metal coating is 0.5-2.5mm.
The total wall thickness everywhere of the copper plate of crystallizer of the described wear-resistant gradient of resistance to heat etching coating are equal.
Described top ceramic coating and lower metal coating grade height coating, and the height of the top ceramic coating is liquid
The upper and lower 100mm-150mm in face.
Beneficial effects of the present invention：The present invention pollutes environment, coating in solving the surface strengthening technologies such as plating, thermal spraying
The problems such as easy to fall off, low intensity, reduction slab quality.And be divided into for the cladding layer of copper plate of crystallizer matrix surface by the present invention
Lower two parts, solve copper plate of crystallizer working face whole cladding single coating material of the prior art and there is problem.Copper
Plate top is ceramic coating, and its intensity is high, thermal fatigue resistance is good, it is to avoid crystallizer copper plate surface top is because contact high temperature
Molten steel, and erosion, the peeling phenomenon for occurring, and ceramic coating heat conductivility is poor, it is to avoid the generation of strand crackle, reduces
The formability of column crystal in solidified structure, so as to improve the quality of strand；Bottom is metal coating, and its thermal conductivity is good, hard
Degree is high, wearability is good, has reached the purpose for making molten steel rapid shaping, and has avoided copper coin bottom and occurs because of throwing dummy ingot
The phenomenons such as abrasion, so as to extend the service life of copper coin, high degree improve conticaster operating rate and continuous casting billet quality,
Yield, it is ensured that enterprise produces stable operation, the present invention has in a word can extend crystallizer service life, improve conticaster work
The advantage of efficiency, slab quality and yield.
Brief description of the drawings
Fig. 1 is a kind of front view of the wear-resistant gradient of resistance to heat etching coating crystallizer copper plate of the present invention.
Fig. 2 is a kind of left view of the wear-resistant gradient of resistance to heat etching coating crystallizer copper plate of the present invention.
In figure：1st, copper plate of crystallizer matrix 2, top ceramic coating 3, lower metal coating.
Specific embodiment
The present invention is described further below in conjunction with the accompanying drawings.
Embodiment 1
As depicted in figs. 1 and 2, a kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate, it includes, it includes copper plate of crystallizer base
Body 1, it is characterised in that：The surface of described copper plate of crystallizer matrix 1 is provided with cladding layer obtained in laser melting coating, and described is molten
Coating includes top ceramic coating 2 and lower metal coating 2, and the thickness of described top ceramic coating 2 is 0.2-0.5mm, institute
The thickness of the lower metal coating 3 stated is 0.5-2.5mm.
When implementing, top ceramic coating WC based metal ceramic coatings, its preparation process is first with supersonic speed fire to the present invention
Flame spraying technology is sprayed WC-12Co (mass fraction) powder, after the completion of carry out remelting with laser melting and coating technique, be obtained pottery
Porcelain coating, its thickness is 0.3mm；Lower metal coating is Co-based alloy coating, and its cladding material (percentage by weight) is C
0.6th, Cr 20, W 5, Mo 3, Si 0.8, Fe 0.4, Ni 10, Nb 5, balance of Co, preparation method are molten for preset coating laser
Coating technique, obtained metal coating thickness is 2mm, and total wall thickness are equal everywhere for processed rear copper plate of crystallizer, and top coating
Highly it is the upper and lower 100mm-150mm of liquid level, the present invention has in a word can extend crystallizer service life, improve conticaster work
The advantage of efficiency, slab quality and yield.
Embodiment 2
As depicted in figs. 1 and 2, a kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate, it includes, it includes copper plate of crystallizer base
Body 1, it is characterised in that：The surface of described copper plate of crystallizer matrix 1 is provided with cladding layer obtained in laser melting coating, and described is molten
Coating includes top ceramic coating 2 and lower metal coating 2, and the thickness of described top ceramic coating 2 is 0.2-0.5mm, institute
The thickness of the lower metal coating 3 stated is 0.5-2.5mm, and the copper plate of crystallizer of the described wear-resistant gradient of resistance to heat etching coating is everywhere
Total wall thickness are equal, described top ceramic coating 2 and the grade height coating of lower metal coating 3, and the top ceramic coating 2 height
It is the upper and lower 100mm-150mm of liquid level to spend.
When implementing, top ceramic coating is boride ceramics coating to the present invention, and its cladding material (percentage by weight) is
10% boron supplying agent BC4,10% energizer KBF and surplus filler powder SiC, use fore-put powder laser after abundant ball milling mixing
The mode of cladding is obtained the boride ceramics coating of 0.5mm；Lower metal coating is ni base alloy coating, its cladding material (weight
Amount percentage) it is Ni 56, Cr 17, W 8.5, Mo 9.3, Al 1, Ti 2.9, C 0.3, Si 2.5, B 2.5, sent using synchronous
The mode of powder is obtained the metal coating of 0.5mm.Total wall thickness are equal everywhere for processed rear copper plate of crystallizer, and top coating height is
The upper and lower 100mm-150mm of liquid level, in a word the present invention have can extend crystallizer service life, improve conticaster operating efficiency,
The advantage of slab quality and yield.
Embodiment 3
When implementing, top ceramic coating is the ZrO2 ceramic coatings of 0.2mm to the present invention；Lower metal coating for 1mm it is Ni-based,
The metal coating that Co-based alloy powder is alternatively formed, total wall thickness are equal everywhere for processed rear copper plate of crystallizer, and top applies floor height
It is the upper and lower 100mm-150mm of liquid level to spend, and the present invention has in a word can extend crystallizer service life, improve conticaster work effect
The advantage of rate, slab quality and yield.
Claims (3)
1. a kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate, it includes, it is characterised in that：It includes copper plate of crystallizer base
Body, it is characterised in that：The surface of described copper plate of crystallizer matrix is provided with cladding layer obtained in laser melting coating, described cladding
Layer includes top ceramic coating and lower metal coating, and the thickness of described top ceramic coating is 0.2-0.5mm, it is described under
The thickness of portion's metal coating is 0.5-2.5mm.
2. a kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate as claimed in claim 1, it is characterised in that：Described is heat-resisting
The total wall thickness everywhere for losing the copper plate of crystallizer of wear-resistant gradient coating are equal.
3. a kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate as claimed in claim 1, it is characterised in that：Described top
Ceramic coating and lower metal coating grade height coating, and the height of the top ceramic coating is the upper and lower 100mm-150mm of liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710092918.7A CN106903281A (en) | 2017-02-21 | 2017-02-21 | A kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710092918.7A CN106903281A (en) | 2017-02-21 | 2017-02-21 | A kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate |
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| CN106903281A true CN106903281A (en) | 2017-06-30 |
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| CN201710092918.7A Pending CN106903281A (en) | 2017-02-21 | 2017-02-21 | A kind of wear-resistant gradient of resistance to heat etching coating crystallizer copper plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226705A (en) * | 2018-09-30 | 2019-01-18 | 上海宝钢工业技术服务有限公司 | Alloy powder and cladding method for copper plate of crystallizer laser melting coating |
| CN110016698A (en) * | 2019-04-02 | 2019-07-16 | 中冶赛迪工程技术股份有限公司 | A kind of plate slab crystallizer coating and preparation method thereof |
| CN112955263A (en) * | 2018-10-29 | 2021-06-11 | 株式会社Posco | Crystallizer and casting method |
| CN115110018A (en) * | 2022-06-22 | 2022-09-27 | 武汉钢铁有限公司 | Preparation method of coating for crystallizer copper plate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226705A (en) * | 2018-09-30 | 2019-01-18 | 上海宝钢工业技术服务有限公司 | Alloy powder and cladding method for copper plate of crystallizer laser melting coating |
| CN112955263A (en) * | 2018-10-29 | 2021-06-11 | 株式会社Posco | Crystallizer and casting method |
| CN110016698A (en) * | 2019-04-02 | 2019-07-16 | 中冶赛迪工程技术股份有限公司 | A kind of plate slab crystallizer coating and preparation method thereof |
| CN110016698B (en) * | 2019-04-02 | 2021-03-16 | 中冶赛迪工程技术股份有限公司 | Slab crystallizer coating and preparation method thereof |
| CN115110018A (en) * | 2022-06-22 | 2022-09-27 | 武汉钢铁有限公司 | Preparation method of coating for crystallizer copper plate |
| CN115110018B (en) * | 2022-06-22 | 2023-11-10 | 武汉钢铁有限公司 | Preparation method of coating for crystallizer copper plate |
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Application publication date: 20170630 |
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