CN108057862A - A kind of casting method of twin roll strip - Google Patents
A kind of casting method of twin roll strip Download PDFInfo
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- CN108057862A CN108057862A CN201711464981.5A CN201711464981A CN108057862A CN 108057862 A CN108057862 A CN 108057862A CN 201711464981 A CN201711464981 A CN 201711464981A CN 108057862 A CN108057862 A CN 108057862A
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- belt
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- twin roll
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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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- 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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
- B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel
-
- 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
- B22D11/07—Lubricating the moulds
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
Abstract
The invention discloses a kind of casting method of twin roll strip, processing step is as follows：1) configure raw material, 2) by raw material pass through vacuum medium frequency induction furnace melting；3) melt refined is supplied to by injection nozzle by the crystallization roll of two reverse rotations and the molten bath that is formed of sealing plate of both sides, the flat nozzle of a row is respectively arranged with above the outside of two crystallization rolls, by flat nozzle to crystal roller surface spray cooling liquid, melt in molten bath forms the made-up belt runic of predetermined thickness as the rotation of crystallization roll solidifies and is exported；4) pretreatment is polished to made-up belt runic using the abrasive brush of 100~300 mesh, then made-up belt runic is processed by shot blasting using the nonwoven fabric brush roll of 2000~3000 mesh, the roughness of made-up belt is reached 0.05~0.15 μm；5) made-up belt after essence is thrown carries out no-core winder, is packaged, and is twin roll strip product.The twin roll strip that the present invention is cast.
Description
Technical field
The present invention relates to twin roll strip casting technology fields, are specifically a kind of casting method of twin roll strip.
Background technology
In general, the step of manufacture made-up belt, is as follows：Pass through casting process (continuous casting process)
Slab (slab) is manufactured with molten steel, which forms hot rolled coil (hot- by reheating with hot rolling (hot-rolling) process
rolled coil).The hot rolled coil is subjected to the torrid zone in thermal annealing (hot annealing) ＆ pickling (pickling) production line and moves back
Fiery (hot band annealing) and pickling, then the hot rolled coil final products are shaped to by cold-rolled process.Above-mentioned continuous casting
Method is very complicated because casting process and roll milling process are to be performed separately.Further, since to allow after moulding
Slab must just be reheated by performing roll milling process, therefore consume big energy, and continuous cast method is not in terms of economy and environment
Favored.The shortcomings that in order to overcome continuous cast method, has developed the double roller band that sheet metal (made-up belt) is directly manufactured using double roller
Base casting method.
In existing twin roll strip casting process, the fringe region of the made-up belt opposite mistake compared with other regions of the made-up belt
Heat, then due to fringe region set retardation phenomenon, the thickness of the made-up belt may edge region locally increase (about 50mm) or
The made-up belt may be torn.This phenomenon is referred to as " edge protuberance ".Fringe region set retardation phenomenon can be considered as twin roll strip
The characteristics of casting process.During roll milling process, since the fringe region may relatively thick or hot, the reduction ratio of the width of made-up belt
It may variation.Therefore, the shape of made-up belt may be deformed or is likely to form due to bad rolling situation caused by edge waviness
Crackle, so as to reduce yield rate；In addition, in casting process, if the heat transfer control between melt and crystallization roll is unstable
It is fixed, easily make twin roll strip Tissue distribution uneven.
The content of the invention
It is mentioned above in the background art to solve it is an object of the invention to provide a kind of casting method of twin roll strip
Problem.
To achieve the above object, the present invention provides following technical solution：
A kind of casting method of twin roll strip, processing step are as follows：
1) raw material is configured：Raw material constituent is by weight percentage：Carbon 0.01~0.12%, silicon 1.22~1.56%,
Manganese 0.03~0.05%, sulphur 0.01~0.05%, aluminium 1.16~3.55%, titanium 0.11~0.53%, bismuth 0.32~0.46%, zirconium
1.15~3.35%, copper 0.15~0.35%, tin 0~0.12%, phosphorus are less than 0.01%, remaining is iron；
2) by raw material by vacuum medium frequency induction furnace melting, after raw material all fusing, melt temperature is risen to 1260~
1320 DEG C, the slag on surface is removed, melt temperature is finally risen to 1330~1460 DEG C, melt is refined；
3) melt refined is supplied to the crystallization roll reversely rotated by two and the sealing plate of both sides by injection nozzle
In the molten bath of formation, the flat nozzle of a row is respectively arranged with above the outside of two crystallization rolls, by flat nozzle to crystallization roll table
Face spray cooling liquid, the melt in molten bath form the made-up belt runic of predetermined thickness as the rotation of crystallization roll solidifies and is exported；
4) pretreatment is polished to made-up belt runic using the abrasive brush of 100~300 mesh, then using 2000~3000 mesh
Nonwoven fabric brush roll made-up belt runic is processed by shot blasting, the roughness of made-up belt is reached 0.05~0.15 μm；
5) made-up belt after essence is thrown carries out no-core winder, is packaged, and is twin roll strip product.
As further embodiment of the present invention：The degree of superheat of molten bath upper surface is controlled at 80~100 DEG C in the step 3).
As further embodiment of the present invention：The injection direction of flat nozzle and crystallization roll peak are tangent in the step 3)
It sets.
As further embodiment of the present invention：The contact arc length of melt and crystallization roll roll surface in molten bath in the step 3)
For 100~150mm, the radian of contact arc is 15~25 °.
As further embodiment of the present invention：The rotating speed of crystallization roll is 40~60m/min in the step 3).
As further embodiment of the present invention：The height in molten bath is 80~120mm in the step 3).
As further embodiment of the present invention：Be mixed with lubrication powder in the step 3) in coolant, constituent and
Weight percent is：Sepiolite 4~9%, diatomite 5~10%, aluminium hydroxide 35~55%, graphite 20~27%, zinc oxide
10~15%, remaining is talcum powder.
As further embodiment of the present invention：The powder size of the lubrication powder is 300~400 mesh.
As further embodiment of the present invention：.
Compared with prior art, the beneficial effects of the invention are as follows：Add titanium elements in the feed, using its easily with nitrogen, sulphur,
The solidified structure of the characteristics of oxygen etc. combines to form dystectic compound, greatly refinement orientation Twin-Roll Thin Strip, obtains fine grain
Grain, is conducive to subsequent tissue and regulation and control, also effectively improves the moulding of material, tough performance, is the Cold-roller of following process process
Sequence provides convenience；Bismuth element is added in the feed, and bismuth element is a kind of surface active element, can be obtained significantly in small bore
Increase crystal grain ball number so that crystal grain distribution is more uniform；Zr element is added in the feed, zirconium easily absorbs hydrogen, nitrogen and oxygen,
Melting can absorb the gases such as oxygen, hydrogen, nitrogen in large quantities when heating, and be conducive to improve the mechanical performance of Twin-Roll Thin Strip, reduce skin
Air holes rejection rate；The degree of superheat of molten bath upper surface is controlled at 80~100 DEG C, the contact arc of melt and crystallization roll roll surface in molten bath
Length is 100~150mm, and the radian of contact arc is 15~25 °, and the height in molten bath is 80~120mm, and powder is mixed in coolant
Last granularity is 300~400 lubrication powder, arranged so that the fringe region of made-up belt and the heat in other regions of the made-up belt
Degree is balanced, avoids fringe region set retardation phenomenon, Twin-Roll Thin Strip yield rate is effectively ensured.
Specific embodiment
The technical solution in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment
Only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel all other embodiments obtained without making creative work belong to the model that the present invention protects
It encloses.
A kind of casting method of twin roll strip, processing step are as follows：
1) raw material is configured：Raw material constituent is by weight percentage：Carbon 0.01~0.12%, silicon 1.22~1.56%,
Manganese 0.03~0.05%, sulphur 0.01~0.05%, aluminium 1.16~3.55%, titanium 0.11~0.53%, bismuth 0.32~0.46%, zirconium
1.15~3.35%, copper 0.15~0.35%, tin 0~0.12%, phosphorus are less than 0.01%, remaining is iron；
2) by raw material by vacuum medium frequency induction furnace melting, after raw material all fusing, melt temperature is risen to 1260~
1320 DEG C, the slag on surface is removed, melt temperature is finally risen to 1330~1460 DEG C, melt is refined；
3) melt refined is supplied to the crystallization roll reversely rotated by two and the sealing plate of both sides by injection nozzle
In the molten bath of formation, the flat nozzle of a row is respectively arranged with above the outside of two crystallization rolls, by flat nozzle to crystallization roll table
Face spray cooling liquid, the injection direction of flat nozzle and the tangent setting of crystallization roll peak, the melt in molten bath is with crystallization roll
It rotates and solidifies and be exported, form the made-up belt runic of predetermined thickness；Wherein, the degree of superheat of molten bath upper surface is controlled 80~100
DEG C, the contact arc length of melt and crystallization roll roll surface is 100~150mm in molten bath, and the radian of contact arc is 15~25 °, molten bath
Height for 80~120mm, the rotating speed of crystallization roll is 40~60m/min, and powder size is mixed in coolant as 300~400
Lubrication powder, constituent and weight percent are：Sepiolite 4~9%, diatomite 5~10%, aluminium hydroxide 35~
55%th, graphite 20~27%, zinc oxide 10~15%, remaining is talcum powder.
4) pretreatment is polished to made-up belt runic using the abrasive brush of 100~300 mesh, then using 2000~3000 mesh
Nonwoven fabric brush roll made-up belt runic is processed by shot blasting, the roughness of made-up belt is reached 0.05~0.15 μm；
5) made-up belt after essence is thrown carries out no-core winder, is packaged, and is twin roll strip product.
Embodiment 1
A kind of casting method of twin roll strip, processing step are as follows：
1) raw material is configured：Raw material constituent is by weight percentage：Carbon 0.01%, silicon 1.22%, manganese 0.03%, sulphur
0.01%th, aluminium 1.16%, titanium 0.11%, bismuth 0.32%, zirconium 1.15%, copper 0.15%, phosphorus 0.005%, remaining is iron；
2) by raw material by vacuum medium frequency induction furnace melting, after raw material all fusing, melt temperature is risen to 1260~
1320 DEG C, the slag on surface is removed, melt temperature is finally risen to 1330~1460 DEG C, melt is refined；
3) melt refined is supplied to the crystallization roll reversely rotated by two and the sealing plate of both sides by injection nozzle
In the molten bath of formation, the flat nozzle of a row is respectively arranged with above the outside of two crystallization rolls, by flat nozzle to crystallization roll table
Face spray cooling liquid, the injection direction of flat nozzle and the tangent setting of crystallization roll peak, the melt in molten bath is with crystallization roll
It rotates and solidifies and be exported, form the made-up belt runic of predetermined thickness；Wherein, the degree of superheat of molten bath upper surface is controlled 80~100
DEG C, the contact arc length of melt and crystallization roll roll surface is 100~150mm in molten bath, and the radian of contact arc is 15~25 °, molten bath
Height for 80~120mm, the rotating speed of crystallization roll is 40m/min, and the profit that powder size is 300~400 is mixed in coolant
Smoothers material, constituent and weight percent are：Sepiolite 4%, diatomite 5%, aluminium hydroxide 35%, graphite 20%, oxidation
Zinc 10%, remaining is talcum powder.
4) pretreatment is polished to made-up belt runic using the abrasive brush of 100~300 mesh, then using 2000~3000 mesh
Nonwoven fabric brush roll made-up belt runic is processed by shot blasting, the roughness of made-up belt is reached 0.05~0.15 μm；
5) made-up belt after essence is thrown carries out no-core winder, is packaged, and is twin roll strip product.
The twin roll strip product thickness is uniform, and edge quality is high, and crystal grain distribution is more uniform, and toughness and plasticity are good, puts down
Equal hardness is 213.
Embodiment 2
A kind of casting method of twin roll strip, processing step are as follows：
1) raw material is configured：Raw material constituent is by weight percentage：Carbon 0.12%, silicon 1.56%, manganese 0.05%, sulphur
0.05%th, aluminium 3.55%, titanium 0.53%, bismuth 0.46%, zirconium 3.35%, copper 0.35%, tin 0.12%, phosphorus 0.008%, remaining is
Iron；
2) by raw material by vacuum medium frequency induction furnace melting, after raw material all fusing, melt temperature is risen to 1260~
1320 DEG C, the slag on surface is removed, melt temperature is finally risen to 1330~1460 DEG C, melt is refined；
3) melt refined is supplied to the crystallization roll reversely rotated by two and the sealing plate of both sides by injection nozzle
In the molten bath of formation, the flat nozzle of a row is respectively arranged with above the outside of two crystallization rolls, by flat nozzle to crystallization roll table
Face spray cooling liquid, the injection direction of flat nozzle and the tangent setting of crystallization roll peak, the melt in molten bath is with crystallization roll
It rotates and solidifies and be exported, form the made-up belt runic of predetermined thickness；Wherein, the degree of superheat of molten bath upper surface is controlled 80~100
DEG C, the contact arc length of melt and crystallization roll roll surface is 100~150mm in molten bath, and the radian of contact arc is 15~25 °, molten bath
Height for 80~120mm, the rotating speed of crystallization roll is 60m/min, and the profit that powder size is 300~400 is mixed in coolant
Smoothers material, constituent and weight percent are：Sepiolite 9%, diatomite 10%, aluminium hydroxide 55%, graphite 27%, oxidation
Zinc 15%, remaining is talcum powder.
4) pretreatment is polished to made-up belt runic using the abrasive brush of 100~300 mesh, then using 2000~3000 mesh
Nonwoven fabric brush roll made-up belt runic is processed by shot blasting, the roughness of made-up belt is reached 0.05~0.15 μm；
5) made-up belt after essence is thrown carries out no-core winder, is packaged, and is twin roll strip product.
The twin roll strip product thickness is uniform, and edge quality is high, and crystal grain distribution is more uniform, and toughness and plasticity are good, puts down
Equal hardness is 226.
Embodiment 3
A kind of casting method of twin roll strip, processing step are as follows：
1) raw material is configured：Raw material constituent is by weight percentage：Carbon 0.06%, silicon 1.35%, manganese 0.04%, sulphur
0.03%th, aluminium 2.66%, titanium 0.25%, bismuth 0.41%, zirconium 2.72%, copper 0.25%, tin 0.08%, phosphorus 0.002%, remaining is
Iron；
2) by raw material by vacuum medium frequency induction furnace melting, after raw material all fusing, melt temperature is risen to 1260~
1320 DEG C, the slag on surface is removed, melt temperature is finally risen to 1330~1460 DEG C, melt is refined；
3) melt refined is supplied to the crystallization roll reversely rotated by two and the sealing plate of both sides by injection nozzle
In the molten bath of formation, the flat nozzle of a row is respectively arranged with above the outside of two crystallization rolls, by flat nozzle to crystallization roll table
Face spray cooling liquid, the injection direction of flat nozzle and the tangent setting of crystallization roll peak, the melt in molten bath is with crystallization roll
It rotates and solidifies and be exported, form the made-up belt runic of predetermined thickness；Wherein, the degree of superheat of molten bath upper surface is controlled 80~100
DEG C, the contact arc length of melt and crystallization roll roll surface is 100~150mm in molten bath, and the radian of contact arc is 15~25 °, molten bath
Height for 80~120mm, the rotating speed of crystallization roll is 50m/min, and the profit that powder size is 300~400 is mixed in coolant
Smoothers material, constituent and weight percent are：Sepiolite 7%, diatomite 8%, aluminium hydroxide 42%, graphite 25%, oxidation
Zinc 13%, remaining is talcum powder.
4) pretreatment is polished to made-up belt runic using the abrasive brush of 100~300 mesh, then using 2000~3000 mesh
Nonwoven fabric brush roll made-up belt runic is processed by shot blasting, the roughness of made-up belt is reached 0.05~0.15 μm；
5) made-up belt after essence is thrown carries out no-core winder, is packaged, and is twin roll strip product.
The twin roll strip product thickness is uniform, and edge quality is high, and crystal grain distribution is more uniform, and toughness and plasticity are good, puts down
Equal hardness is 221.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.
Claims (8)
1. a kind of casting method of twin roll strip, which is characterized in that processing step is as follows：
1) raw material is configured：Raw material constituent is by weight percentage：Carbon 0.01~0.12%, silicon 1.22~1.56%, manganese
0.03~0.05%, sulphur 0.01~0.05%, aluminium 1.16~3.55%, titanium 0.11~0.53%, bismuth 0.32~0.46%, zirconium
1.15~3.35%, copper 0.15~0.35%, tin 0~0.12%, phosphorus are less than 0.01%, remaining is iron；
2) melt temperature after raw material all fusing, is risen to 1260~1320 by raw material by vacuum medium frequency induction furnace melting
DEG C, the slag on surface is removed, melt temperature is finally risen to 1330~1460 DEG C, melt is refined；
3) sealing plate that the melt refined is supplied to the crystallization roll reversely rotated by two and both sides by injection nozzle is formed
Molten bath in, the flat nozzle of a row is respectively arranged with above the outside of two crystallization rolls, by flat nozzle to crystal roller surface spray
Penetrate coolant, the melt in molten bath forms the made-up belt runic of predetermined thickness as the rotation of crystallization roll solidifies and is exported；
4) pretreatment is polished to made-up belt runic using the abrasive brush of 100~300 mesh, then using 2000~3000 purposes not
Woven fabric brush roll is processed by shot blasting made-up belt runic, and the roughness of made-up belt is reached 0.05~0.15 μm；
5) made-up belt after essence is thrown carries out no-core winder, is packaged, and is twin roll strip product.
2. the casting method of a kind of twin roll strip according to claim 1, which is characterized in that in the step 3) on molten bath
The degree of superheat on surface is controlled at 80~100 DEG C.
A kind of 3. casting method of twin roll strip according to claim 1, which is characterized in that flat nozzle in the step 3)
Injection direction and the tangent setting of crystallization roll peak.
4. the casting method of a kind of twin roll strip according to claim 1, which is characterized in that in the step 3) in molten bath
The contact arc length of melt and crystallization roll roll surface is 100~150mm, and the radian of contact arc is 15~25 °.
A kind of 5. casting method of twin roll strip according to claim 1, which is characterized in that crystallization roll in the step 3)
Rotating speed be 40~60m/min.
A kind of 6. casting method of twin roll strip according to claim 1, which is characterized in that molten bath in the step 3)
Highly it is 80~120mm.
A kind of 7. casting method of twin roll strip according to claim 1, which is characterized in that coolant in the step 3)
Lubrication powder is inside mixed with, constituent and weight percent are：Sepiolite 4~9%, diatomite 5~10%, aluminium hydroxide 35
~55%, graphite 20~27%, zinc oxide 10~15%, remaining is talcum powder.
A kind of 8. casting method of twin roll strip according to claim 7, which is characterized in that the powder of the lubrication powder
Granularity is 300~400 mesh.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711464981.5A CN108057862A (en) | 2017-12-28 | 2017-12-28 | A kind of casting method of twin roll strip |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711464981.5A CN108057862A (en) | 2017-12-28 | 2017-12-28 | A kind of casting method of twin roll strip |
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