CN107520415A - A kind of strong heat exchange amorphous band production chill roll of turbulent flow - Google Patents
A kind of strong heat exchange amorphous band production chill roll of turbulent flow Download PDFInfo
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- CN107520415A CN107520415A CN201710845416.7A CN201710845416A CN107520415A CN 107520415 A CN107520415 A CN 107520415A CN 201710845416 A CN201710845416 A CN 201710845416A CN 107520415 A CN107520415 A CN 107520415A
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- cooling medium
- roller
- main shaft
- section
- turbulent flow
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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
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- Rolls And Other Rotary Bodies (AREA)
Abstract
The invention discloses a kind of strong heat exchange amorphous band production chill roll of turbulent flow, including roller core, roller set, left main shaft, right main shaft, left cover and right cover plate, there is cooling medium to enter passage in left main shaft, there is cooling medium to flow out passage in right main shaft, left cover, space forms the left circulation passage of cooling medium respectively between right cover plate and roller core, the right circulation passage of cooling medium, roller covers the space between roller core and forms the strong heat exchanger channels of turbulent flow, there is cooling medium radially outlet in left main shaft, there is cooling medium radial direction entrance in right main shaft, roller covers thickness and the strong heat exchanger channels depth of turbulent flow is incremented by from roller set longitudinal centre line to both sides, roller covers inwall and is interval with some turbulent-flow heat-exchanging annular grooves along roller set width, the notch section for the rectangular cross-section that turbulent-flow heat-exchanging annular groove includes being connected and section are spherical bottom land section.Good effect of heat exchange of the present invention, solve the problems, such as that roller is enclosed on causes greatly band intermediate recess and intermediate amorphous degree difference with Axial Temperature Distribution difference in band contact area.
Description
Technical field
The present invention relates to amorphous band production technical field, is used more particularly, to a kind of strong heat exchange amorphous band production of turbulent flow
Chill roll.
Background technology
The operation principle of amorphous ribbon pocket builder is：The amorphous master alloy solution melted in crucible, passes through crucible bottom
Eject slot is got rid of in belt roller to atwirl water cooling, and alloy solution is cooled down and is thrown out of and forms amorphous thin ribbon strongly.
During band is sprayed, band can produce intermediate recess, and the situation of intermediate amorphous degree difference, mainly due to melting
Alloy is ejected at a high speed on the chill roll of rotation through nozzle, alloy weld pool is formed between nozzle and roll surface, in weld pool and roll surface
In the width range of contact, along roll surface axially there is one using band center as symmetrical temperature gradient field, due in band
Between the heat conduction of scope be substantially one-dimensional along chill roll radially-inwardly heat conduction, thus band intermediate region roll surface vertically
Thermograde is smaller, and bigger closer to its thermograde vertically of the region on band both sides, therefore heat conduction state is than in
Between region it is good, i.e., heat can radially, the two-dimentional heat conduction of and can vertically.So that after certain time is sprayed onto, due to cooling
The heat of roller is constantly accumulated, and the middle heat conduction with both sides is produced difference, heat build-up degree is different, so as to produce in band
Parabolically convex expands width regions roll surface.So as to result in the change of the gap of nozzle and roll surface, so as to have impact on molten steel
The discharge uniformity of flat board stream, and generate band laterally parabolically recessed situation.Because the inhomogeneities of heat conduction produces again
Band intermediate amorphous degree is poor, both sides amorphous degree preferable phenomenon.
For example, Authorization Notice No. CN203900420U, authorized announcement date 2014.10.29 Chinese patent discloses one kind
Chill roll with novel inner core structure, including copper sheathing, inner core and two cover plates, two cover plates are respectively fixedly connected with the copper
The opening both ends of set simultaneously cooperatively form a closing space for being used to accommodate inner core with the copper sheathing；Also include a main shaft, institute
Main shaft is stated through the centrally disposed of described two cover plates and the inner core；Wherein described inner core is cylindrical structure, the inner core
The fin of more than 2 is provided with towards the outer peripheral face of the copper sheathing, the fin is from one end of the inner core around described interior
The outer peripheral face of core is spirally extended to the other end of the inner core, and multiple fins are correspondingly arranged to form the bull that cooling water passes through
Helical duct.Although the chill roll overcomes existing laminar flow phenomenon between copper roller inner surface and recirculated water, but still exist
Roller set is big with Axial Temperature Distribution difference in band contact area, causes band intermediate recess and intermediate amorphous degree during spray band
The problem of poor
The content of the invention
The present invention is to solve the above mentioned problem present in the chill roll of prior art, there is provided a kind of clever structure,
Good effect of heat exchange, can effectively solve roller be enclosed on it is big with Axial Temperature Distribution difference in band contact area, cause spray band during
The problem of band intermediate recess and intermediate amorphous degree difference, the strong heat exchange amorphous band of the uniform turbulent flow of obtained amorphous band amorphous degree
Production chill roll.
To achieve these goals, the present invention uses following technical scheme：
The strong heat exchange amorphous band production chill roll of one kind turbulent flow of the present invention, including roller core, roller set, left main shaft, right master
Axle, left cover and right cover plate, the left cover, right cover plate are respectively arranged on roller core both sides and by being socketed on roller core outer circumferential
Roller set is fixedly connected, and the left main shaft is through left cover and is secured to connect, and enters passage provided with cooling medium in left main shaft,
The right main shaft is rotatablely connected through right cover plate and with right cover plate, and cooling medium outflow passage is provided with right main shaft, and its feature exists
In the space between the left cover, right cover plate and roller core forms the left circulation passage of cooling medium, the right circulation of cooling medium respectively
Passage, the space between roller set and roller core form the strong heat exchanger channels of turbulent flow, after the cooling medium prepass, cooling medium
Passage and the strong heat exchanger channels of turbulent flow, which are connected, forms cooling medium circulation passage, and left main shaft is located in the left circulation passage of cooling medium
Part circumferentially spaced be provided with some cooling medium radially outlets communicated with the left passage of cooling medium；Right main shaft is positioned at cooling
End in the right circulation passage of medium is fixedly connected with roller core, and right main shaft is located at part in the right circulation passage of cooling medium along week
To some cooling medium radial direction entrances communicated with the right passage of cooling medium are interval with, the roller set thickness and turbulent flow exchange heat by force
Channel depth covers longitudinal centre line from roller and is gradually incremented by both sides, if the internal face of roller set is interval with along roller set width
Dry turbulent-flow heat-exchanging annular groove, it is spherical bottom land that the turbulent-flow heat-exchanging annular groove, which includes the notch section of rectangular cross-section and section,
Section, the notch section are connected with bottom land section.The strong heat exchanger channels depth of central roll set thickness and turbulent flow of the present invention covers longitudinal direction from roller
Center line is gradually incremented by both sides, and the cooling medium throughput of roller set and band contact area is more than roller set and band contact area
The cooling medium throughput of both sides so that roller covers the heat exchange efficiency for being better than both sides with the heat exchange efficiency of band contact area, passes through
Promote roller set center heat transfer, weaken border heat transfer, so as to realize roller set surface temperature homogenization, reduce the temperature of roller set outer surface
Gradient, thus effectively solve roller be enclosed on it is big with Axial Temperature Distribution difference in band contact area, cause spray band during band
The problem of intermediate recess and intermediate amorphous degree difference；At the same time, the notch section of turbulent-flow heat-exchanging annular groove including rectangular cross-section and
Section is spherical bottom land section, and the notch section is connected with bottom land section, and cooling medium is directly entered bottom land section, groove from notch section
Bottom section section is spherical, and section is the contact area that spherical bottom land section can increase roller set and cooling medium, is advantageous to improve heat
Exchange efficiency and effect, at the same cooling medium enter bottom land after from laminar condition become turbulence state, greatly improve table in roller set
Face and the heat exchanger effectiveness of cooling medium, so as to be advantageous to improve the cooling capacity of roller set, notch section rectangular cross-section, cooling is situated between
Matter enters in bottom land section can keep certain time to carry out sufficient heat exchange after formation turbulent flow, so as to improve cooling effect.
Preferably, the diameter of the notch section spherical section is more than the width of notch section.Notch section spherical section it is straight
Footpath is more than the width of notch section so that the pressure of cooling medium reduces, and is more beneficial for cooling medium and forms turbulent flow, while improves heat
Exchange efficiency.
Preferably, the internal face of the roller set is set to circular arc concave surface, the circular arc concave surface forms guide face.Roller covers internal face
Circular arc concave surface is set to, is advantageous to cooling medium and is directly entered in turbulent-flow heat-exchanging annular groove.
Preferably, the lateral surface of the roller core is arc convex.The lateral surface of roller core is arc convex, is advantageously reduced
Cooling medium passes through resistance in turbulent strong heat exchanger channels.
Preferably, the handing-over after the cooling medium prepass, cooling medium between passage and the strong heat exchanger channels of turbulent flow
Locate equal arc transition.The equal circular arc in junction after cooling medium prepass, cooling medium between passage and the strong heat exchanger channels of turbulent flow
Transition, advantageously reduce cooling medium and pass through resistance in turbulent strong heat exchanger channels.
Preferably, the convex bulb and roller core are homogeneity integrative-structure.
Therefore, the present invention has the advantages that：
(1) roller set thickness and the strong heat exchanger channels depth of turbulent flow cover longitudinal centre line from roller and are gradually incremented by both sides, roller set
It is more than roller set and the cooling medium throughput of band contact area both sides with the cooling medium throughput of band contact area so that
Roller covers the heat exchange efficiency for being better than both sides with the heat exchange efficiency of band contact area, by promoting roller to cover center heat transfer, weakens border
Heat transfer, so as to realize that roller covers surface temperature homogenization, the thermograde of reduction roller set outer surface, effectively solution roller are enclosed on and band
Axial Temperature Distribution difference is big in contact area, causes during spray band band intermediate recess and the problem of intermediate amorphous degree difference；
(2) the notch section of turbulent-flow heat-exchanging annular groove including rectangular cross-section and section are spherical bottom land section, the notch
Section is connected with bottom land section, and cooling medium is directly entered bottom land section from notch section, and bottom land section section is spherical, and section is spherical
Bottom land section can increase the contact area of roller set and cooling medium, be advantageous to improve heat exchanger effectiveness and effect, while cooling medium
Become turbulence state from laminar condition after into bottom land, greatly improve the heat exchanger effectiveness of roller set inner surface and cooling medium, from
And being advantageous to improve the cooling capacity of roller set, notch section rectangular cross-section, cooling medium enters meeting after formation turbulent flow in bottom land section
Kept for certain time to carry out sufficient heat exchange, so as to improve cooling effect；
(3) roller set internal face is set to circular arc concave surface, is advantageous to cooling medium and is directly entered in turbulent-flow heat-exchanging annular groove；
(4) lateral surface of roller core is arc convex；Passage and the strong heat exchange of turbulent flow are logical after cooling medium prepass, cooling medium
The equal arc transition in junction between road, advantageously reduce cooling medium and pass through resistance in turbulent strong heat exchanger channels.
Brief description of the drawings
Fig. 1 is a kind of structure sectional view of the present invention.
Fig. 2 is the partial enlarged drawing at A in Fig. 1.
In figure：Roller core 1, roller set 2, left main shaft 3, right main shaft 4, left cover 5, right cover plate 6, cooling medium enters passage 7, cold
But medium flow pass 8, the left circulation passage 9 of cooling medium, the right circulation passage 10 of cooling medium, the strong heat exchanger channels 11 of turbulent flow are cold
But medium radially outlet 12, cooling medium radial direction entrance 13, turbulent-flow heat-exchanging annular groove 14, notch section 15, bottom land section 16, guide face
17, arc convex 18.
Embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
The strong heat exchange amorphous band production chill roll of a kind of turbulent flow as shown in Figure 1 and Figure 2, including roller core 1, roller set 2, a left side
Main shaft 3, right main shaft 4, left cover 5 and right cover plate 6, left cover, right cover plate are respectively arranged on roller core both sides and by being socketed on roller core
The roller set of outer circumferential is fixedly connected, and left main shaft is through left cover and is secured to connect, and is entered in left main shaft provided with cooling medium
Enter passage 7, right main shaft is rotatablely connected through right cover plate and with right cover plate, and cooling medium outflow passage 8, left cover are provided with right main shaft
Space between plate, right cover plate and roller core forms the left circulation passage 9 of cooling medium, the right circulation passage 10 of cooling medium, roller respectively
Space between set and roller core forms turbulent strong heat exchanger channels 11, and left main shaft is located at the part edge in the left circulation passage of cooling medium
It is circumferentially-spaced to be provided with some cooling medium radially outlets 12 communicated with the left passage of cooling medium；Right main shaft is located at the cooling medium right side
End in circulation passage is fixedly connected with roller core, and the part that right main shaft is located in the right circulation passage of cooling medium is circumferentially spaced
Provided with some cooling medium radial direction entrances 13 communicated with the right passage of cooling medium, lead to after cooling medium prepass, cooling medium
Road and the strong heat exchanger channels of turbulent flow, which are connected, forms cooling medium circulation passage, after cooling medium prepass, cooling medium passage and
The equal arc transition in junction between turbulent strong heat exchanger channels, the internal face of roller set is set to circular arc concave surface, and the circular arc concave surface is formed
Guide face 17, the lateral surface of roller core is arc convex 18, and roller set thickness and the strong heat exchanger channels depth of turbulent flow are covered in longitudinal direction from roller
Heart line is gradually incremented by both sides, and the internal face of roller set is interval with some turbulent-flow heat-exchanging annular grooves 14 along roller set width, disorderly
It is spherical bottom land section 16 that stream heat exchange annular groove, which includes the notch section 15 of rectangular cross-section and section, and notch section is connected with bottom land section
Logical and notch section spherical section diameter is more than the width of notch section.
The present invention use principle be：When cooling medium successively through cooling medium enter passage, cooling medium radially outlet,
After the left circulation passage of cooling medium enters in the strong heat exchanger channels of turbulent flow, turbulent-flow heat-exchanging annular groove is entered in the presence of guide face,
It is that spherical groove bottom Duan Zhongcong laminar conditions become turbulent condition in section, section is that spherical bottom land section can increase roller set and cooling
The contact area of medium, is advantageous to improve heat exchanger effectiveness and effect, at the same cooling medium enter bottom land after become from laminar condition
Into turbulence state, the heat exchanger effectiveness that roller covers inner surface and cooling medium is greatly improved, so as to be advantageous to improve the cooling of roller set
Ability, notch section rectangular cross-section, cooling medium enters in bottom land section can keep certain time to carry out fully after formation turbulent flow
Heat exchange, so as to improve cooling effect；Cooling medium after heat exchange is successively from turbulent strong heat exchanger channels, the right stream of cooling medium
Circulation passage, the outflow of cooling medium radially outlet, so as to complete whole heat exchanging process.
Due to the roller set thickness in the present invention and the strong heat exchanger channels depth of turbulent flow from roller cover longitudinal centre line to both sides by
Gradually it is incremented by, the cooling medium throughput of roller set and band contact area is more than roller set and the cooling medium of band contact area both sides
Throughput so that roller covers the heat exchange efficiency for being better than both sides with the heat exchange efficiency of band contact area, is passed by promoting roller to cover center
Heat, weaken border heat transfer, so as to realize roller set surface temperature homogenization, reduce the thermograde of roller set outer surface, effectively solve
Roller be enclosed on it is big with Axial Temperature Distribution difference in band contact area, cause spray band during band intermediate recess and intermediate amorphous
Spend the problem of poor.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent structure transformation that technical spirit is made to above example, still fall within skill of the present invention
The protection domain of art scheme.
Claims (5)
1. a kind of strong heat exchange amorphous band production chill roll of turbulent flow, including roller core (1), roller set (2), left main shaft (3), right main shaft
(4), left cover (5) and right cover plate (6), the left cover, right cover plate are respectively arranged on roller core both sides and by being socketed on roller core week
Roller set laterally is fixedly connected, and the left main shaft is through left cover and is secured to connect, and cooling medium is provided with left main shaft
Into passage (7), the right main shaft is rotatablely connected through right cover plate and with right cover plate, and it is logical that cooling medium outflow is provided with right main shaft
Road (8), it is characterised in that the space between the left cover, right cover plate and roller core forms the left circulation passage of cooling medium respectively
(9), the right circulation passage of cooling medium (10), the space between the roller set and roller core form turbulent strong heat exchanger channels (11), institute
State passage and the strong heat exchanger channels of turbulent flow after cooling medium prepass, cooling medium and be connected and form cooling medium circulation passage, it is left
Main shaft be located at part in the left circulation passage of cooling medium it is circumferentially spaced be provided with it is some communicated with the left passage of cooling medium it is cold
But medium radially outlet (12)；The end that right main shaft is located in the right circulation passage of cooling medium is fixedly connected with roller core, right main shaft
Part in the right circulation passage of cooling medium is circumferentially spaced provided with some coolings Jie communicated with the right passage of cooling medium
Matter radial direction entrance (13), the strong heat exchanger channels depth of the roller set thickness and turbulent flow are gradually passed from roller set longitudinal centre line to both sides
Increase, the internal face of roller set is interval with some turbulent-flow heat-exchanging annular grooves (14), the turbulent-flow heat-exchanging annular along roller set width
It is spherical bottom land section (16) that groove, which includes the notch section (15) of rectangular cross-section and section, and the notch section is connected with bottom land section
It is logical.
A kind of 2. strong heat exchange amorphous band production chill roll of turbulent flow according to claim 1, it is characterised in that the groove
The diameter of mouth section spherical section is more than the width of notch section.
A kind of 3. strong heat exchange amorphous band production chill roll of turbulent flow according to claim 1, it is characterised in that the roller
The internal face of set is set to circular arc concave surface, and the circular arc concave surface forms guide face (17).
A kind of 4. strong heat exchange amorphous band production chill roll of turbulent flow according to claim 1, it is characterised in that the roller
The lateral surface of core is arc convex (18).
5. the strong heat exchange amorphous band production chill roll of a kind of turbulent flow according to claim 1, it is characterised in that described cold
But the equal arc transition in junction after medium prepass, cooling medium between passage and the strong heat exchanger channels of turbulent flow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710845416.7A CN107520415A (en) | 2017-09-19 | 2017-09-19 | A kind of strong heat exchange amorphous band production chill roll of turbulent flow |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710845416.7A CN107520415A (en) | 2017-09-19 | 2017-09-19 | A kind of strong heat exchange amorphous band production chill roll of turbulent flow |
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| CN107520415A true CN107520415A (en) | 2017-12-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000522A1 (en) * | 2021-07-21 | 2023-01-26 | 安泰非晶科技有限责任公司 | Cooling roller and fitting method therefor |
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2017
- 2017-09-19 CN CN201710845416.7A patent/CN107520415A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000522A1 (en) * | 2021-07-21 | 2023-01-26 | 安泰非晶科技有限责任公司 | Cooling roller and fitting method therefor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171229 |
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| WD01 | Invention patent application deemed withdrawn after publication |