CN106111923A - A kind of planar flow based on wall attachment effect casts with energy-conservation stripping air knife - Google Patents
A kind of planar flow based on wall attachment effect casts with energy-conservation stripping air knife Download PDFInfo
- Publication number
- CN106111923A CN106111923A CN201610766860.5A CN201610766860A CN106111923A CN 106111923 A CN106111923 A CN 106111923A CN 201610766860 A CN201610766860 A CN 201610766860A CN 106111923 A CN106111923 A CN 106111923A
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- China
- Prior art keywords
- air knife
- stripping
- conservation
- stripping air
- energy
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B22D11/06—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
-
- 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
Abstract
The present invention relates to a kind of planar flow based on wall attachment effect energy-conservation stripping air knife of casting.The stripping air knife of the present invention makes compressed air consumption few, based on wall attachment effect, outer convex arc surface can be with drain several times, several times in compressed-air actuated peripheral air, below 0.2MPa is reduced to by the 0.4MPa of tradition air knife compression gas-pressure, air curtain impulsive force is powerful, uniform and thin, degree of divergence is little, and noise is low；Only need to accurately adjust stripping air knife height in circular arc gathering sill, it is not necessary to adjust angle, it is ensured that blowing direction is strictly along chill roll cylindrical tangential direction；Though it is complicated to peel off air knife geometry, but 2 line cutting feeds are only needed to get final product Precision Machining, can save elevating mechanism and rotating mechanism, low cost, non-maintaining；Strip string pick-up point (line) in the direction of the width is almost parallel with chill roll roll surface bus, and in strip, shear stress minimizes, and band does not cracks and burrs on edges, and strip soft magnet performance will not deteriorate, and is beneficial in wire reel-up simultaneously.
Description
Technical field
The invention belongs to planar flow cast strip lift-off technology field, particularly relate to a kind of planar flow based on wall attachment effect
Cast with energy-conservation stripping air knife.
Background technology
Planar flow casting (planar-flow melt spinning, PFMS) is the earliest by rotation casting (chill block
Melt-spinning, CBMS) develop, it is to make aluminium alloy be drawn out along roll surface from weld pool by single sharp cooling roll high speed rotating,
Form liquid film at roll surface, and in roller, be solidified as strip under water-cooled effect and stripping is collected, it is thus achieved that there is nonequilibrium freezing tissue
The flash set technology of band.This technical staff's artistic skill solves to be easily generated the casting of segregation-alloy, improves the mechanical property of materials, magnetic
While energy, save mass energy and 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 high-end, the demand in intelligence manufacture field.
It is special that non-crystaline amorphous metal has the excellent soft magnetism such as high saturated magnetic induction, high magnetic permeability, low-coercivity, low-loss
Property, amorphous thin ribbon is widely used in the dispensing field such as transformator, amorphous motor, is that instead of the optimal choosing of traditional approach silicon steel core
Select.Planar flow casting is the Typical Representative preparing amorphous thin ribbon, is to be ejected on the chill roll of high speed rotating by high-temperature molten steel, spray
Throwing away thickness only 18 μm～the strip of 30 μm, its cooldown rate is up to 106～107℃/s.This technique rolls work long flow process silicon steel
Skill shortens on the cooling roll surface of diameter only about a meter, is pulled out to spray from weld pool and gets rid of molding again to a lot of stripping coiling process
Restraining factors are by increasingly complex difficult control.
Need to peel away in time roll surface after strip rapid solidification molding, to start the spray of next circumference and getting rid of after separation.PFMS
Technique uses in early days mechanical type to peel off, the most over a long time in continue to use scraper or strip is directly separated by hairbrush with chill roll always, as
Wedge shape or boot last scraper disclosed in United States Patent (USP) US 4770227 and US 4789022.Mechanical type is peeled off and can be pasted roll surface and strip
Roll surface causes cut, band to occur, and transverse and longitudinal crackle or point tuft, serious meeting damage chill roll are allowed to scrap in advance.The most gradually adopt
Mechanical stripping is replaced, such as U.S. Patent number US 4301855 and Chinese patent application CN 103930225 A and CN with gas stripping
104399925 A.Strip is seldom caused mechanical type to scratch by gas stripping, and strip is substantially without cracking and burr, simultaneously
Be equivalent to roll surface carry out air quenching cooling, be conducive to alleviating thermal shock load, make roll surface temperature reduce, away from softening temperature.Very
Extremely, also can completely strip for the fragility band that pliability is poor.
Go out to send design stripping air knife profile at present from hydrodynamics and in-built report is the rarest, outside air knife
Air curtain impulsive force, divergence and the uniformity are had a major impact by shape and internal structure.Tradition is peeled off air knife and be there is many drawbacks, spray
The air-flow of seam air knife is uneven, and impulsive force is not enough, and especially round type air knife the most easily causes the high scores such as air sympathetic response
Shellfish noise.Similar tradition is peeled off air knife and is not mostly accounted for energy-conservation link, only relies on a large amount of compressed airs of consumption and reaches to peel off mesh
, the air curtain of blowout is thicker and dissipates, and impulsive force is the most powerful.It is therefore desirable to design air knife profile, draw by wall air
Stream effect, by the fewest specific air consumption, to reach maximum peeling effect.
After strip molding, pick-up point and blowing direction at roll surface are most important to magnetic property and the template of strip, seldom with
Strip performance is studied by this for starting point.Circumferentially adjust stripping air knife height and angle mutually pins down, adjusting
Take long enough during joint just will not attend to one thing and lose sight of another.Stripping gas often must be constantly adjusted before getting rid of band and in starting the short time
The position of cutter and blowing direction, make strip produce minimum shearing force when peeling off, but separate from roll surface by tension force, in order to avoid making
It tears up and can not be taken up.Blowing direction must be strictly adjusted along chill roll cylindrical tangential direction at pick-up point, thin in the case of this
In band, shearing stress minimizes, and soft magnet performance is because of without being affected by shearing stress.Patent US 5054529 discloses a kind of tune
The device in whole pick-up point gentle stripping direction, 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 this similar device must make approximant adjustment, especially the most repeatedly in conjunction with height and angle
The adjustment of its angle, only by intuition and the experience of people, can only be accomplished approximately along tangential direction blowing gas, it is impossible to quantifies, at random
Property is big.If this problem can not thoroughly be solved, it will technique is introduced uncertain factor, artificially increases technology difficulty, serious shadow
Ring production efficiency.
Summary of the invention
The present invention is directed to the deficiency that above-mentioned prior art exists, it is provided that a kind of planar flow casting based on wall attachment effect saves
Air knife can be peeled off.
The technical scheme is that a kind of planar flow casting based on wall attachment effect saves
Can peel off air knife, including support guide system and stripping air knife body, described support guide system includes support column and dovetail base
Seat, described support column is positioned at chill roll side, is placed in dovetail pedestal；It is characterized in that, described support guide system is also
Including guide plate and propping；Described stripping air knife body outer wall is enclosed by outer convex arc surface, interior concaved circular cambered surface and two flat faces
Become；Described stripping air knife body interior includes air chamber and the spray seam connected with air chamber.
The invention has the beneficial effects as follows:
1, energy-conservation.The stripping air knife of the present invention makes compressed air consumption few, based on wall attachment effect, and its distinctive evagination
Arc surface can be reduced to by the 0.4MPa of tradition air knife compression gas-pressure with drain several times, several times in compressed-air actuated peripheral air
Below 0.2MPa, air curtain impulsive force is powerful, uniform and thin, and degree of divergence is little, and noise is low.
2, the most quickly position.The present invention only need to accurately adjust stripping air knife height in circular arc gathering sill, it is not necessary to adjusts
Angle, it is ensured that blowing direction is strictly along chill roll cylindrical tangential direction.
3, simple in construction.Though the stripping air knife geometry of the present invention is complicated, but 2 line cutting feeds are only needed to get final product precision
Processing, can save elevating mechanism and rotating mechanism, and low cost is non-maintaining.
4, peeling effect is good.The strip of present invention string pick-up point (line) in the direction of the width almost with chill roll roll surface
Bus is parallel, and in strip, shear stress minimizes, and band does not cracks and burrs on edges, and strip soft magnet performance will not deteriorate,
It is beneficial in wire reel-up simultaneously.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described interior concaved circular cambered surface curvature is identical with chill roll cylindrical curvature, for 1/R；Described interior concaved circular cambered surface with
Chill roll cylindrical inscribe；Wherein, described R is chill roll exradius.
Use above-mentioned further scheme to provide the benefit that, peel off air knife and can move along chill roll cylindrical, interior time mobile
Concaved circular cambered surface is fitted with chill roll roll surface all the time, it is ensured that peeling off air knife when arbitrary height, spray seam opening is all the time along outside chill roll
Circle tangential direction.Air-flow is through described outer concaved circular cambered surface, and hydrodynamics determines air-flow and is close to protrude Surface runoff, flow velocity
The biggest, external pressure is the biggest, i.e. wall attachment effect.Based on wall attachment effect, only by a small amount of compressed air as power source, just can be number
Again, the peripheral air drain of decades of times compressed air volume forms higher-pressure region at roll surface.
Further, described outer convex arc surface curvature is 1/5R-1/10R；Wherein, described R is chill roll exradius.
Use above-mentioned further scheme to provide the benefit that, make wall attachment effect become apparent from.
Further, described spray seam width be 0.5-1.5mm, a length of 10-300mm, spray seam passage be arc-shaped, circular arc with
Chill roll cylindrical is concentric.
Use above-mentioned further scheme to provide the benefit that, reduce flow velocity, it is ensured that exit flow is uniform
Further, described spray seam width is 1.0mm, a length of 220mm.
Further, described guide plate is provided with locking plate and circular arc gathering sill, described circular arc gathering sill and chill roll cylindrical
Concentric；Described locking plate fixes described stripping air knife body position.
Use above-mentioned further scheme to provide the benefit that, quickly behind location, fasten stripping by the locking plate on guide plate
Position from air knife.
Further, described circular arc gathering sill is provided with angle index line.
Using above-mentioned further scheme to provide the benefit that, precise quantification adjusts peels off air knife height.
Further, described stripping air knife body supports fixing by propping, and described propping runs through guide plate, described horizontal stroke
Strutbeam moves in a circle in described circular arc gathering sill.
Using above-mentioned further scheme to provide the benefit that, propping moves in a circle in circular arc gathering sill, adjusts stripping
From air knife height.
Further, described stripping air knife body edges is provided with 3 screw mandrel screws, is accurately adjusted stripping air knife by screw originally
Body and chill roll roll surface spacing, range of accommodation 0-3mm.
Use above-mentioned further scheme to provide the benefit that, can finely tune between interior concaved circular cambered surface and chill roll roll surface away from
From, even if making to there is certain distance between the two also can guarantee that it is parallel with roll surface on roller cross direction.During spray band, will
Screw whiz chill roll roll surface or back-out screw mandrel screw.
Further, described air chamber with spray seam passage be connected district be additionally provided with spray stitch fence (figure does not marks).
Using above-mentioned further scheme to provide the benefit that, spray seam fence plays the effect of uniform cloth stream, reduces further
Flow velocity, makes air curtain more uniform.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing stripping air knife；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is the side view of Fig. 2；
Fig. 4 is the structural representation of guide plate；
In figure, 1, peel off air knife body；2, outer convex arc surface；3, interior concaved circular cambered surface；4, flat face；5, air chamber；6, spray seam；
7, chill roll cylindrical；8, guide plate；9, locking plate；10, circular arc gathering sill；11, propping；12, screw mandrel screw；13, strip.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with example, example is served only for explaining the present invention, and
Non-for limiting the scope of the present invention.
Embodiment 1
The casting of a kind of planar flow based on wall attachment effect is with energy-conservation stripping air knife, including support guide system and stripping air knife
Body 1, described support guide system includes support column and dovetail pedestal, and described support column is positioned at chill roll side, is placed in dovetail
In pedestal；It is characterized in that, described support guide system also includes guide plate 8 and propping 11；Described stripping air knife is originally
External wall is surrounded by outer convex arc surface 2, interior concaved circular cambered surface 3 and two flat faces 4；Described stripping air knife body interior includes air chamber
5 and connect with air chamber spray seam 6；
Described interior concaved circular cambered surface curvature is identical with chill roll cylindrical 7 curvature, for 1/R；Described interior concaved circular cambered surface and chill roll
Cylindrical inscribe；Described outer convex arc surface curvature is 1/5R-1/10R；Described spray seam width is 1.0mm, a length of 220mm, spray seam
Passage is arc-shaped, and circular arc is concentric with chill roll cylindrical；Described guide plate is provided with locking plate 9 and circular arc gathering sill 10, described
The circular arc of circular arc gathering sill and chill roll cylindrical concentric；Described locking plate fixes described stripping air knife body position；Described circle
Arc gathering sill is provided with angle index line；Described stripping air knife body supports fixing by propping, and described propping runs through leads
To plate, described propping moves in a circle in described circular arc gathering sill；Described stripping air knife body edges is provided with 3 screw mandrel spiral shells
Hole 12, will peel off air knife body by screw and position；Described air chamber is connected district with spray seam passage and is additionally provided with spray seam fence (in figure not
Mark), make air curtain homogenization further；Wherein, described R is chill roll exradius.
The present invention is so to use, before amorphous band outer round type spray is got rid of, mobile and finely tune support column position and horizontal
Beam at circular arc gathering sill correspondence scale, be directed to plate circular arc gathering sill adjust to chill roll cylindrical concentric position, and make 3
Touching roll surface through mixing up the screw top of length, to determine the initial position peeling off air knife, blowing direction is in tangential direction, nothing
Angle adjustment need to be done again；When the beginning is thrown in strip 13 spray away, regulate compressed air air pressure, adjust air pressure height to just peeling off
Band and not being allowed to crack with burr till.Fine crack, blowing direction deviation stripping is unavoidably produced in strip edge
When the tangential direction of a P, shearforce easily makes fine crack extension form burr；During getting rid of band, on-line control peels off gas
Knife up degree, pick-up point P changes therewith on chill roll roll surface position, adjusts optimum position so that success negative pressure captures, and online
Measuring thickness of strip is 25 ± 3 μm.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. planar flow based on wall attachment effect casting is with an energy-conservation stripping air knife, including support guide system and stripping air knife basis
Body, described support guide system includes support column and dovetail pedestal, and described support column is positioned at chill roll side, is placed in dovetail pedestal
In；It is characterized in that, described support guide system also includes guide plate and propping；Described stripping air knife body outer wall is by evagination
Arc surface, interior concaved circular cambered surface and two flat faces surround；Described stripping air knife body interior includes air chamber and connects with air chamber
Spray seam.
Energy-conservation stripping air knife the most according to claim 1, it is characterised in that outside described interior concaved circular cambered surface curvature is with chill roll
Circle curvature is identical, for 1/R；Described interior concaved circular cambered surface and chill roll cylindrical inscribe；
Wherein, described R is chill roll exradius.
Energy-conservation stripping air knife the most according to claim 1, it is characterised in that described outer convex arc surface curvature is 1/5R-1/
10R；Wherein, described R is chill roll exradius.
Energy-conservation stripping air knife the most according to claim 1, it is characterised in that described spray seam width is 0.5-1.5mm, length
For 10-300mm, spray seam passage is arc-shaped, and circular arc is concentric with chill roll cylindrical.
5. according to the energy-conservation stripping air knife described in claim 1 or 4, it is characterised in that described spray seam width is 1.0mm, length
For 220mm.
Energy-conservation stripping air knife the most according to claim 1, it is characterised in that described guide plate is provided with locking plate and circular arc
Gathering sill, the circular arc of described circular arc gathering sill is concentric with chill roll cylindrical, and described locking plate fixes described stripping this position of air knife
Put.
Energy-conservation stripping air knife the most according to claim 6, it is characterised in that described circular arc gathering sill is provided with angle index
Line.
Energy-conservation stripping air knife the most according to claim 6, it is characterised in that described stripping air knife body is propped up by propping
Support is fixing, and described propping runs through guide plate, and described propping moves in a circle in described circular arc gathering sill.
Energy-conservation stripping air knife the most according to claim 1, it is characterised in that described stripping air knife body edges is provided with 3
Screw mandrel screw, accurately adjusts stripping air knife body and chill roll roll surface spacing by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN106111923A true CN106111923A (en) | 2016-11-16 |
| CN106111923B CN106111923B (en) | 2018-01-16 |
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| CN201610766860.5A Active 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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363233A (en) * | 2017-08-05 | 2017-11-21 | 芜湖君华材料有限公司 | A kind of non-crystaline amorphous metal magnetic band shaping cooling collection method |
| CN107377908A (en) * | 2017-08-05 | 2017-11-24 | 芜湖君华材料有限公司 | A kind of amorphous alloy strips single roller rapid quenching surface processing device |
| CN107414041A (en) * | 2017-08-02 | 2017-12-01 | 芜湖君华材料有限公司 | A kind of non-crystaline amorphous metal magnetic material system band fast quenching list roller |
| CN107498011A (en) * | 2017-07-10 | 2017-12-22 | 吴迪 | A kind of amorphous band stripping off device |
| 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 |
| CN113753357A (en) * | 2021-09-03 | 2021-12-07 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN113753357A (en) * | 2021-09-03 | 2021-12-07 | 江苏国能合金科技有限公司 | Automatic strip guide stripping device for amorphous thin strip for amorphous transformer |
| 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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