CN106111923B - A kind of planar flow casting based on wall attachment effect peels off air knife with energy-conservation - Google Patents
A kind of planar flow casting based on wall attachment effect peels off air knife with energy-conservation Download PDFInfo
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- CN106111923B CN106111923B CN201610766860.5A CN201610766860A CN106111923B CN 106111923 B CN106111923 B CN 106111923B CN 201610766860 A CN201610766860 A CN 201610766860A CN 106111923 B CN106111923 B CN 106111923B
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- air knife
- chill roll
- energy
- peels
- air
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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
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
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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
- B22D11/0637—Accessories therefor
- B22D11/0694—Accessories therefor for peeling-off or removing the cast product
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- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
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Abstract
The present invention relates to a kind of planar flow casting based on wall attachment effect to peel off air knife with energy-conservation.The stripping air knife of the present invention make it that compressed air consumption is few, based on wall attachment effect, outer convex arc surface can drain several times, the peripheral air several times in compressed air, below 0.2MPa is reduced to by the 0.4MPa of traditional air knife compression gas-pressure, air curtain impulsive force is powerful, uniform and thin, degree of divergence is small, and noise is low；It only need to accurately be adjusted in circular arc guide groove and peel off air knife height, it is not necessary to adjustment angle, ensure blowing direction strictly along the cylindrical tangential direction of chill roll；Though it is complicated to peel off air knife geometry, only need 2 wire cutting feeds can Precision Machining, elevating mechanism and rotating mechanism can be saved, cost is low, non-maintaining；The row pick-up point (line) of strip in the direction of the width is almost parallel with chill roll roll surface bus, and shear stress minimizes in strip, and band does not crack and burrs on edges, and strip soft magnet performance will not deteriorate, while beneficial in wire reel-up.
Description
Technical field
The invention belongs to planar flow cast strip lift-off technology field, more particularly to a kind of planar flow based on wall attachment effect
Casting peels off air knife with energy-conservation.
Background technology
Planar flow is cast（Planar-flow melt spinning, PFMS）Earliest by rotation casting（chill block
Melt-spinning, CBMS）Develop, be that rotation makes aluminium alloy be drawn out from weld pool along roll surface at a high speed by single sharp cooling roll,
Liquid film is formed in roll surface, and water cooling is solidified as strip and peeled off to collect in roller under acting on, acquisition has nonequilibrium freezing tissue
The flash set technology of band.The technical matters can solve the casting for being also easy to produce segregation-alloy, improve the mechanical property of materials, magnetic
While energy, save mass energy and simultaneously improve production efficiency.And because of its short route, the special process of near-net forming, after eliminating
Continuous multi- pass rolling and heat treatment, meet the demand in high-end intelligence manufacture field.
Non-crystaline amorphous metal has the excellent soft magnetism such as high saturated magnetic induction, high magnetic permeability, low-coercivity, low-loss special
Property, amorphous thin ribbon is widely used in the fields such as dispatching transformer, amorphous motor, being that instead of the optimal choosing of tradition directed silicon steel core
Select.Planar flow casting is the Typical Representative for preparing amorphous thin ribbon, is that high-temperature molten steel is ejected at a high speed on the chill roll of rotation, spray
The strip of only 18 μm~30 μm of thickness is thrown away, its cooldown rate is up to 106~107℃/s.The technique rolls long flow silicon steel
Technique is shortened on the cooling roll surface of only one meter or so of diameter, from weld pool be pulled out to spray get rid of shaping again to peel off coiling process in very
More restraining factors control increasingly complex hardly possible.
Strip needs to peel away roll surface in time after being rapidly solidificated into type, is got rid of after separation to start next circumference spray.PFMS
Technique early stage is peeled off using mechanical, and continuing to use scraper or hairbrush always in long-term very much directly separates strip with chill roll, such as
Wedge shape or boot last scraper disclosed in United States Patent (USP) US 4770227 and US 4789022.Mechanical peel off can paste to roll surface and strip
Roll surface causes cut, and band transverse and longitudinal crackle occurs or divides tuft, and serious meeting damage chill roll is allowed to scrap in advance.Gradually adopt later
Replace mechanical stripping with gas stripping, such as the U.S. Patent number US 4301855 and A of Chinese patent application CN 103930225 and
CN 104399925 A.Gas stripping seldom causes mechanically to scratch to strip, and strip will not crack substantially and burr, together
When to roll surface equivalent to air quenching cooling is carried out, be advantageous to mitigate thermal shock load, reduce roll surface temperature, away from softening temperature.
Even, can also be completely stripped for the poor fragility band of pliability.
Go out to send design stripping air knife profile from hydrodynamics at present and in-built report is still rare, outside air knife
Shape and internal structure have a major impact to air curtain impulsive force, divergence and the uniformity.Tradition peels off air knife and many drawbacks be present, sprays
The air-flow of seam air knife is uneven, and impulsive force deficiency, especially round type air knife easily causes the high scores such as air sympathetic response at high pressure
Shellfish noise.Similar tradition peels off air knife and does not account for saving link mostly, only relies on a large amount of compressed airs of consumption and reaches stripping mesh
, the air curtain of blowout is thicker and dissipates, and impulsive force is not powerful enough.It is therefore desirable to design air knife profile, draw by wall air
Stream acts on, use specific air consumption as few as possible, to reach maximum peeling effect.
Strip shaping after roll surface pick-up point and blowing direction it is most important to the magnetic property and template of strip, seldom with
This is that starting point is studied strip performance.Circumferentially air knife height is peeled off in adjustment and angle mutually pins down, and is being adjusted
Take long enough just attend to one thing and lose sight of another during section.Before band is got rid of and start often must constantly adjust stripping gas in the short time
The position of knife and blowing direction, strip is produced minimum shearing force when peeling off, but separated by tension force from roll surface, in order to avoid make
It, which tears up, to be taken up.Blowing direction must be strictly adjusted at pick-up point along the cylindrical tangential direction of chill roll, it is thin in the case of this
With interior shearing stress minimize, soft magnet performance thus will not be influenceed by shearing stress.Patent US 5054529 discloses a kind of tune
The device in the whole gentle stripping direction of pick-up point, to completely strip strip.The adjusting apparatus of Invention Announce can not be rapidly pick-up point
Gentle stripping direction is adjusted to optimum position, and the similar device must combine height and angle repeatedly makes approximant adjustment repeatedly, especially
The adjustment of its angle can only accomplish substantially tangentially blowing gas, it is impossible to quantify, at random only by the intuition and experience of people
Property is big.If can not thoroughly solve this problem, it will uncertain factor is introduced to technique, artificially increases technology difficulty, serious shadow
Ring production efficiency.
The content of the invention
The present invention is directed to above-mentioned the shortcomings of the prior art, there is provided a kind of planar flow casting section based on wall attachment effect
Air knife can be peeled off.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of planar flow casting section based on wall attachment effect
Air knife can be peeled off, including support guide system and stripping air knife body, the support guide system include support column and dovetail base
Seat, the support column are located at chill roll side, are placed in dovetail pedestal；It is characterized in that the support guide system is also
Including guide plate and propping；The stripping air knife body outer wall is enclosed by outer convex arc surface, interior concaved circular cambered surface and two flat faces
Into；The air knife body interior of peeling off includes air chamber and the spray connected with air chamber seam.
The beneficial effects of the invention are as follows：
1st, save.The stripping air knife of the present invention make it that compressed air consumption is few, based on wall attachment effect, its distinctive evagination
Arc surface can drain several times, the peripheral air several times in compressed air, be reduced to by the 0.4MPa of traditional air knife compression gas-pressure
Below 0.2MPa, air curtain impulsive force is powerful, uniform and thin, and degree of divergence is small, and noise is low.
2nd, accurate fast positioning.The present invention only need to accurately adjust in circular arc guide groove and peel off air knife height, it is not necessary to adjust
Angle, ensure blowing direction strictly along the cylindrical tangential direction of chill roll.
3rd, it is simple in construction.Though the stripping air knife geometry of the present invention is complicated, only need 2 wire cutting feeds can essence
Close processing, elevating mechanism and rotating mechanism can be saved, cost is low, non-maintaining.
4th, peeling effect is good.The row pick-up point of the strip of the present invention in the direction of the width（Line）Almost with chill roll roll surface
Bus is parallel, and shear stress minimizes in strip, and band does not crack and burrs on edges, and strip soft magnet performance will not deteriorate,
Simultaneously beneficial in wire reel-up.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the interior concaved circular cambered surface curvature is identical with the cylindrical curvature of chill roll, is 1/R；The interior concaved circular cambered surface with
The cylindrical inscribe of chill roll；Wherein, described R is chill roll exradius.
Beneficial effect using above-mentioned further scheme is to peel off air knife to move along chill roll is cylindrical, interior when mobile
Concaved circular cambered surface is bonded with chill roll roll surface all the time, ensures to peel off air knife in any height, and spray seam opening is all the time along outside chill roll
Circle tangential direction.When air-flow passes through the outer concaved circular cambered surface, hydrodynamics determines that air-flow is close to protrusion surface flowing, flow velocity
Bigger, external pressure is bigger, i.e. wall attachment effect., just can be number only by the use of a small amount of compressed air as power source based on wall attachment effect
Again, the peripheral air drainage of decades of times compressed air volume forms higher-pressure region in roll surface.
Further, the outer convex arc surface curvature is 1/5R-1/10R；Wherein, described R is chill roll exradius.
Beneficial effect using above-mentioned further scheme is to become apparent wall attachment effect.
Further, the spray slit width degree be 0.5-1.5mm, length 10-300mm, and spray seam passage is in arc-shaped, circular arc and
Chill roll is cylindrical with one heart.
Beneficial effect using above-mentioned further scheme is to reduce flow velocity, ensures that exit flow is uniform
Further, the spray slit width degree is 1.0mm, length 220mm.
Further, the guide plate is provided with locking plate and circular arc guide groove, and the circular arc guide groove and chill roll are cylindrical
Concentric；The locking plate fastening stripping air knife body.
Beneficial effect using above-mentioned further scheme is, after fast positioning, stripping is fastened by the locking plate on guide plate
From air knife body.
Further, the circular arc guide groove is provided with angle index line.
Beneficial effect using above-mentioned further scheme is that air knife height is peeled off in precise quantification adjustment.
Further, the stripping air knife body is supported by propping fixes, and the propping runs through guide plate, the horizontal stroke
Strutbeam moves in a circle in the circular arc guide groove.
Beneficial effect using above-mentioned further scheme is that propping moves in a circle in circular arc guide groove, adjustment stripping
From air knife height.
Further, the stripping air knife body edges are provided with 3 screw mandrel screws, are accurately adjusted by screw and peel off air knife sheet
Body and chill roll roller distance between the surface, adjustable range 0-3mm.
Beneficial effect using above-mentioned further scheme be can finely tune between interior concaved circular cambered surface and chill roll roll surface away from
From, make between the two even if exist certain distance also can guarantee that its in roller cross direction it is parallel with roll surface., will during band is sprayed
Screw whiz chill roll roll surface screws out screw mandrel screw.
Further, the air chamber is additionally provided with spray seam fence with spray seam passage linking area（Do not marked in figure）.
Beneficial effect using above-mentioned further scheme is that spray seam fence plays a part of uniform cloth stream, further reduces
Flow velocity, make air curtain more uniform.
Brief description of the drawings
Fig. 1 is the structural representation of existing stripping air knife；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is Fig. 2 side view；
Fig. 4 is the structural representation of guide plate；
In figure, 1, peel off air knife body；2nd, outer convex arc surface；3rd, interior concaved circular cambered surface；4th, flat face；5th, air chamber；6th, spray
Seam；7th, chill roll is cylindrical；8th, guide plate；9th, locking plate；10th, circular arc guide groove；11st, propping；12nd, screw mandrel screw；13rd, it is thin
Band.
Embodiment
The principle and feature of the present invention are described below in conjunction with example, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment 1
A kind of planar flow based on wall attachment effect is cast peels off air knife, including support guide system and stripping air knife with energy-conservation
Body 1, the support guide system include support column and dovetail pedestal, and the support column is located at chill roll side, is placed in dovetail
In pedestal；It is characterized in that the support guide system also includes guide plate 8 and propping 11；The stripping air knife sheet
External wall is surrounded by outer convex arc surface 2, interior concaved circular cambered surface 3 and two flat faces 4；The stripping air knife body interior includes air chamber
5 and connected with air chamber spray seam 6；
The interior concaved circular cambered surface curvature is identical with cylindrical 7 curvature of chill roll, is 1/R；The interior concaved circular cambered surface and chill roll
Cylindrical inscribe；The outer convex arc surface curvature is 1/5R-1/10R；The spray slit width degree is 1.0mm, length 220mm, and spray is stitched
Passage is in arc-shaped, and circular arc is cylindrical concentric with chill roll；The guide plate is provided with locking plate 9 and circular arc guide groove 10, described
The circular arc of circular arc guide groove and the cylindrical concentric of chill roll；The locking plate fastening stripping air knife body；The circular arc is led
Angle index line is provided with to groove；The stripping air knife body is supported by propping to be fixed, and the propping runs through guide plate,
The propping moves in a circle in the circular arc guide groove；The stripping air knife body edges are provided with 3 screw mandrel screws 12,
Air knife body will be peeled off by screw to position；The air chamber is additionally provided with spray seam fence with spray seam passage linking area（Do not marked in figure
Go out）, further homogenize air curtain；Wherein, described R is chill roll exradius.
The present invention so uses, and before round type spray is got rid of outside amorphous band, movement simultaneously finely tunes support column position and horizontal branch
Beam corresponds to scale in circular arc guide groove, be directed to plate circular arc guide groove adjust to the cylindrical concentric position of chill roll, and make 3
Roll surface is touched on screw top through mixing up length, and to determine to peel off the initial position of air knife, blowing direction is in tangential direction, nothing
Angle adjustment need to be done again；When the beginning is thrown in the spray of strip 13 away, compressed air air pressure is adjusted, adjustment air pressure height can just extremely be peeled off
Band and untill not being allowed to crack with burr.Fine crack is unavoidably produced in strip edge, blowing direction deviates stripping
During tangential direction from point P, shearforce easily makes fine crack extend to form burr；During band is got rid of, on-line control peels off gas
Knife up degree, pick-up point P change on chill roll roll surface position therewith, and adjustment optimum position captures so as to success negative pressure, and online
It is 25 ± 3 μm to measure thickness of strip.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (7)
1. a kind of planar flow based on wall attachment effect is cast peels off air knife, including support guide system and stripping air knife sheet with energy-conservation
Body, the support guide system include support column and dovetail pedestal, and the support column is located at chill roll side, is placed in dovetail pedestal
It is interior；Characterized in that, the support guide system also includes guide plate and propping；The stripping air knife body outer wall is by evagination
Arc surface, interior concaved circular cambered surface and two flat faces surround；The air knife body interior peeled off includes air chamber and connected with air chamber
Spray seam；
The interior concaved circular cambered surface curvature is identical with the cylindrical curvature of chill roll, is 1/R；The interior concaved circular cambered surface is cylindrical interior with chill roll
Cut；Wherein, described R is chill roll exradius；
The outer convex arc surface curvature is 1/5R-1/10R；Wherein, described R is chill roll exradius.
2. energy-conservation according to claim 1 peels off air knife, it is characterised in that the spray slit width degree is 0.5-1.5mm, length
For 10-300mm, spray seam passage is in arc-shaped, and circular arc is cylindrical concentric with chill roll.
3. energy-conservation according to claim 1 or 2 peels off air knife, it is characterised in that the spray slit width degree is 1.0mm, length
For 220mm.
4. energy-conservation according to claim 1 peels off air knife, it is characterised in that the guide plate is provided with locking plate and circular arc
Guide groove, the circular arc and chill roll of the circular arc guide groove are cylindrical concentric, the locking plate fastening stripping air knife body.
5. energy-conservation according to claim 4 peels off air knife, it is characterised in that the circular arc guide groove is provided with angle index
Line.
6. energy-conservation according to claim 4 peels off air knife, it is characterised in that the stripping air knife body passes through propping branch
Support is fixed, and the propping runs through guide plate, and the propping moves in a circle in the circular arc guide groove.
7. energy-conservation according to claim 1 peels off air knife, it is characterised in that the stripping air knife body edges are provided with 3
Screw mandrel screw, accurately adjusted by screw and peel off air knife body and chill roll roller distance between the surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610766860.5A CN106111923B (en) | 2016-08-30 | 2016-08-30 | A kind of planar flow casting based on wall attachment effect peels off air knife with energy-conservation |
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| CN201610766860.5A CN106111923B (en) | 2016-08-30 | 2016-08-30 | A kind of planar flow casting based on wall attachment effect peels off air knife with energy-conservation |
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| CN106111923A CN106111923A (en) | 2016-11-16 |
| CN106111923B true CN106111923B (en) | 2018-01-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107498011B (en) * | 2017-07-10 | 2019-07-30 | 扬州杭集洗漱用品产业投资有限公司 | A kind of amorphous band stripping off device |
| CN107414041B (en) * | 2017-08-02 | 2019-06-18 | 河北瑞煜鑫泽科技有限公司 | A kind of amorphous alloy magnetic material system band fast quenching system |
| CN107377908B (en) * | 2017-08-05 | 2019-03-01 | 芜湖君华材料有限公司 | A kind of amorphous alloy strips single roller rapid quenching surface processing device |
| CN107363233B (en) * | 2017-08-05 | 2019-02-22 | 芜湖君华材料有限公司 | A kind of cooling collection method of amorphous alloy magnetism band molding |
| CN110901004A (en) * | 2019-12-17 | 2020-03-24 | 南安泊阅工业设计有限公司 | Polypropylene braided bag production and processing film extrusion equipment |
| CN112260481A (en) * | 2020-09-25 | 2021-01-22 | 湖南中特液力传动机械有限公司 | Connecting support for heat dissipation of disc type torque-limiting permanent magnet coupler and permanent magnet coupler |
| CN113753357B (en) * | 2021-09-03 | 2023-03-14 | 江苏国能合金科技有限公司 | Automatic strip guide stripping device for amorphous thin strip for amorphous transformer |
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| EP0255674A2 (en) * | 1986-08-06 | 1988-02-10 | Sundwiger Eisenhütte Maschinenfabrik Grah & Co | Apparatus for producing cast metal strip with an amorphous and/or fine crystal structure |
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