CN205967312U - Air knife is peeled off with energy -conservation to plane flow casting based on coanda effect - Google Patents
Air knife is peeled off with energy -conservation to plane flow casting based on coanda effect Download PDFInfo
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- CN205967312U CN205967312U CN201620991654.XU CN201620991654U CN205967312U CN 205967312 U CN205967312 U CN 205967312U CN 201620991654 U CN201620991654 U CN 201620991654U CN 205967312 U CN205967312 U CN 205967312U
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Abstract
The utility model relates to an air knife is peeled off with energy -conservation to plane flow casting based on coanda effect for the compressed air consumption is few, and based on coanda effect, the evagination arc surface can the drainage number times, tens of peripheral air of times as much as that of compressed air, is fallen for below the 0.2MPa by the 0.4MPa of traditional air knife compression atmospheric pressure, and the air curtain impact force is powerful, thin, and the degree of dispersing is little and even, and the noise is low, only need that precise adjustment peel off the air knife height in the circular arc guide way, unnecessary angle of adjustment, the direction of guaranteeing to blow is strict with chill roll excircle tangential direction, though it is complicated to peel off air knife geometry, only 2 wire -electrode cutting feeds of need can the precision finishing, can save elevating system and slewing mechanism, and are with low costs, non -maintaining, it is almost parallel with chill roll roll surface generating line that thin area on width direction peels off a little (line), thin in -band shear stress minimizing, strip do not crack with marginal burr, thinly take the unlikely deterioration of soft magnetism ability, do benefit to simultaneously and batch on line.
Description
Technical field
This utility model belongs to planar flow cast strip lift-off technology field, more particularly, to a kind of flat based on wall attachment effect
Surface current casting energy-conservation peels off air knife.
Background technology
Planar flow casting (planar-flow melt spinning, PFMS) is earliest by rotation casting (chill block
Melt-spinning, CBMS) develop, it is so that aluminium alloy is drawn out from weld pool along roll surface by single sharp cooling roll high-speed rotation,
Form liquid film in roll surface, and be solidified as strip peeling off under water-cooled effect in roller and collect, obtain and there is nonequilibrium freezing tissue
The flash set technology of band.This technical staff's artistic skill solves to be also easy to produce the casting of segregation-alloy, improves the mechanical property of materials, magnetic
While energy, save mass energy improve production efficiency.And the special process because of its short route, near-net forming, after eliminating
Continuous multi- pass rolling and heat treatment, meet high-end, intelligence manufacture field demand.
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 fields such as dispensing transformator, amorphous motor, being 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 that high-temperature molten steel is ejected on the chill roll of high-speed rotation, spray
Throw away the strip of only 18 μm～30 μm of thickness, 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 only one meter about of diameter, and being pulled out to spray from weld pool, to get rid of molding a lot of coiling process to peeling off again
Increasingly complex hardly possible is controlled by restraining factors.
Needing to peel away in time roll surface after strip rapid solidification molding, getting rid of to start the spray of next circumference after separating.PFMS
Technique early stage adopts mechanical type to peel off, and very interior over a long time continues to use scraper always or strip is directly separated by hairbrush with chill roll, such as
United States Patent (USP) US 4770227 and wedge shape disclosed in US 4789022 or boot last scraper.Mechanical type is peeled off can be to roll surface and strip patch
Roll surface causes cut, and transverse and longitudinal crackle or point tuft in band, and serious meeting damages chill roll and is allowed to scrap in advance.Gradually adopted later
Replace mechanical stripping with gas stripping, such as U.S. Patent number US 4301855 and Chinese patent application CN 103930225 A and CN
104399925A.Gas stripping seldom causes mechanical type to scratch to strip, and strip will not crack and burr substantially, simultaneously right
Roll surface is equivalent to and carries out air quenching cooling, is conducive to mitigating thermal shock load, so that roll surface temperature is reduced, away from softening temperature.Even,
Also can completely strip 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
, to air curtain impulsive force, divergence and the uniformity have a major impact for 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 easily causes the high scores such as air sympathetic response at high pressure
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 stripping mesh
, the air curtain of blowout is thicker and dissipates, and impulsive force is not powerful.It is therefore desirable to design air knife profile, draw by wall air
Stream acts on, with specific air consumption as few as possible, to reach maximum peeling effect.
Most important to the magnetic property of strip and template in the pick-up point of roll surface and blowing direction after strip molding, seldom with
This studies to strip performance for starting point.Circumferentially air knife height is peeled off in adjustment and angle mutually pins down, and is adjusting
Take long enough during section 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 the beginning short time
The position of knife 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 strictly be adjusted along the cylindrical tangential direction of chill roll at pick-up point, thin in the case of this
In band shearing stress minimize, soft magnet performance thus will not be affected by shearing stress.Patent US 5054529 discloses a kind of tune
The device in the gentle stripping direction of whole pick-up point, to completely strip strip.The adjusting apparatus that utility model is announced can not be rapidly stripping
It is adjusted to optimum position from putting gentle stripping direction, this similar device repeatedly must make approximant tune repeatedly in conjunction with height and angle
Whole, intuition only by people of the adjustment of especially angle and experience, can only accomplish substantially tangentially blowing gas it is impossible to amount
Change, randomness is big.If this problem can not thoroughly be solved, it will uncertain factor is introduced to technique, artificially increase technology difficulty,
Have a strong impact on production efficiency.
Utility model content
This utility model is directed to the deficiency that above-mentioned prior art exists, and provides a kind of casting of the planar flow based on wall attachment effect
Peel off air knife with energy-conservation.
The technical scheme that this utility model solves above-mentioned technical problem is as follows：A kind of planar flow casting based on wall attachment effect
Peel off air knife with energy-conservation, including support guide system and stripping air knife body, described support guide system includes support column and swallow
Tail pedestal, described support column is located at chill roll side, is placed in dovetail pedestal；It is characterized in that, described support guide system
System also includes guide plate and propping；Described stripping air knife body outer wall is straight by outer convex arc surface, interior concaved circular cambered surface and two
Face surrounds；Described stripping air knife body interior includes air chamber and the spray seam connecting with air chamber.
The beneficial effects of the utility model are：
1st, energy-conservation.Stripping air knife of the present utility model makes compressed air consumption few, and based on wall attachment effect, it is distinctive
Outer convex arc surface can with drain several times, several times in compressed air peripheral air, by the 0.4MPa of traditional air knife compression gas-pressure
It is reduced to below 0.2MPa, air curtain impulsive force is powerful, uniform and thin, and degree of divergence is little, and noise is low.
2nd, accurately quickly position.This utility model only need in circular arc gathering sill accurately adjust stripping air knife height it is not necessary to
Adjustment angle is it is ensured that blowing direction is strictly along the cylindrical tangential direction of chill roll.
3rd, structure is simple.Though stripping air knife geometry of the present utility model is complicated, only need 2 wire cutting feeds
Precision Machining, can save elevating mechanism and rotating mechanism, and low cost is non-maintaining.
4th, peeling effect is good.Strip of the present utility model 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 crack and burrs on edges, and strip soft magnet performance will not be disliked
Change, be beneficial in wire reel-up simultaneously.
On the basis of technique scheme, this utility model can also do following improvement.
Further, described interior concaved circular cambered surface curvature is identical with the cylindrical curvature of chill roll, is 1/R；Described 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 that peeling off air knife can be interior when mobile along the cylindrical movement of chill roll
Concaved circular cambered surface is fitted with chill roll roll surface all the time it is ensured that peeling off air knife in arbitrary height, and spray seam opening is all the time along outside chill roll
Circle tangential direction.When described outer concaved circular cambered surface, hydrodynamics determine air-flow and are close to protrusion surface flowing, flow velocity air-flow
Bigger, external pressure is bigger, i.e. wall attachment effect.Based on wall attachment effect, only with 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 in roll surface.
Further, described 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 so that wall attachment effect is become apparent from.
Further, described spray seam width be 0.5-1.5mm, length be 10-300mm, spray seam passage be in arc-shaped, circular arc with
Chill roll is cylindrical with one heart.
Beneficial effect using above-mentioned further scheme is to reduce flow velocity it is ensured that exit flow is uniform
Further, described spray seam width is 1.0mm, and length is 220mm.
Further, described guide plate is provided with locking plate and circular arc gathering sill, and described circular arc gathering sill is cylindrical with chill roll
Concentric；Described locking plate fixation described stripping air knife body position.
Beneficial effect using above-mentioned further scheme is, after quick positioning, by the locking plate fastening stripping on guide plate
Position from air knife.
Further, described circular arc gathering sill 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, described stripping air knife body is supported by propping and fixes, and described propping runs through guide plate, described horizontal stroke
Strutbeam moves in a circle in described circular arc gathering sill.
Beneficial effect using above-mentioned further scheme is that propping moves in a circle in circular arc gathering sill, adjustment stripping
From air knife height.
Further, described stripping air knife body edges are provided with 3 screw mandrel screws, accurately adjust stripping air knife originally by screw
Body and chill roll roller distance between the surface, range of accommodation 0-3mm.
Beneficial effect using above-mentioned further scheme is, can finely tune between interior concaved circular cambered surface and chill roll roll surface away from
From also can guarantee that it is parallel with roll surface in roller cross direction even if making to there is certain distance between the two.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 area be additionally provided with spray stitch fence (in figure does not mark).
Beneficial effect using above-mentioned further scheme is that spray seam fence plays the effect of uniform cloth stream, reduces further
Flow velocity, makes air curtain more uniform.
Brief description
Fig. 1 is the existing structural representation peeling off air knife；
Fig. 2 is structural representation of the present utility model；
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；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 gathering sill；11st, propping；12nd, screw mandrel screw；13rd, strip.
Specific embodiment
Below in conjunction with example, principle of the present utility model and feature are described, example is served only for explaining this practicality
New, it is not intended to limit scope of the present utility model.
Embodiment 1
A kind of air knife is peeled off based on the planar flow casting energy-conservation of wall attachment effect, including support guide system and peel off air knife
Body 1, described support guide system includes support column and dovetail pedestal, and described support column is located 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 7 curvature cylindrical with chill roll are identical, are 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, and length is 220mm, spray seam
Passage is in arc-shaped, and circular arc is cylindrical with chill roll concentric；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 the cylindrical concentric of chill roll；Described locking plate fixation described stripping air knife body position；Described circle
Arc gathering sill is provided with angle index line；Described stripping air knife body is supported by propping to be fixed, 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 are provided with 3 screw mandrel spiral shells
Hole 12, will peel off air knife body positioning by screw；Described air chamber with spray seam passage be connected area be additionally provided with spray stitch fence (in figure is not
Mark), make air curtain homogenization further；Wherein, described R is chill roll exradius.
This utility model be such use, before amorphous band outer round type spray is got rid of, mobile and finely tune support column position and
Propping corresponds to scale in circular arc gathering sill, is directed to plate circular arc gathering sill and adjusts to concentric position cylindrical with chill roll, and makes 3
Roll surface is touched on the screw top having mixed up length, and to determine the initial position peeling off air knife, blowing direction is in tangent line side
To angle adjustment need not be done again；When the beginning is thrown in strip 13 spray away, adjust compressed air air pressure, adjustment air pressure height extremely can just
Enough peel off band and be not allowed to crack with burr till.Unavoidably produce fine crack, blowing direction in strip edge
During the tangential direction of deviation pick-up point P, shearforce easily makes fine crack extension form burr；During getting rid of band, on-line control
Peel off air knife height, pick-up point P changes therewith on chill roll roll surface position, adjust optimum position so that successful negative pressure crawl,
And on-line measurement thickness of strip is 25 ± 3 μm.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvement made etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (9)
1. a kind of air knife is peeled off based on the planar flow casting energy-conservation of wall attachment effect, including support guide system and peel off air knife this
Body, described support guide system includes support column and dovetail pedestal, and described support column is located at chill roll side, is placed in dovetail pedestal
Interior；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 air knife body interior of peeling off is included air chamber and is connected with air chamber
Spray seam.
2. energy-conservation according to claim 1 peels off air knife it is characterised in that outside described interior concaved circular cambered surface curvature and chill roll
Circle curvature is identical, is 1/R；Described interior concaved circular cambered surface and the cylindrical inscribe of chill roll；
Wherein, described R is chill roll exradius.
3. energy-conservation according to claim 1 peels off air knife it is characterised in that described outer convex arc surface curvature is 1/5R-1/
10R；Wherein, described R is chill roll exradius.
4. energy-conservation according to claim 1 peels off air knife it is characterised in that described spray seam width is 0.5-1.5mm, length
For 10-300mm, spray seam passage is in arc-shaped, and circular arc is cylindrical with chill roll concentric.
5. the energy-conservation according to claim 1 or 4 peels off air knife it is characterised in that described spray seam width is 1.0mm, length
For 220mm.
6. energy-conservation according to claim 1 peels off air knife 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 cylindrical with chill roll concentric, described locking plate fixation described stripping this position of air knife
Put.
7. energy-conservation according to claim 6 peels off air knife it is characterised in that described circular arc gathering sill is provided with angle index
Line.
8. energy-conservation according to claim 6 peels off air knife it is characterised in that described stripping air knife body is propped up by propping
Support is fixed, and described propping runs through guide plate, and described propping moves in a circle in described circular arc gathering sill.
9. energy-conservation according to claim 1 peels off air knife it is characterised in that described stripping air knife body edges are provided with 3
Screw mandrel screw, accurately adjusts stripping air knife body and chill roll roller distance between the surface by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620991654.XU CN205967312U (en) | 2016-08-30 | 2016-08-30 | Air knife is peeled off with energy -conservation to plane flow casting based on coanda effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620991654.XU CN205967312U (en) | 2016-08-30 | 2016-08-30 | Air knife is peeled off with energy -conservation to plane flow casting based on coanda effect |
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| CN205967312U true CN205967312U (en) | 2017-02-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111923A (en) * | 2016-08-30 | 2016-11-16 | 烟台万隆真空冶金股份有限公司 | A kind of planar flow based on wall attachment effect casts with energy-conservation stripping air knife |
-
2016
- 2016-08-30 CN CN201620991654.XU patent/CN205967312U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111923A (en) * | 2016-08-30 | 2016-11-16 | 烟台万隆真空冶金股份有限公司 | A kind of planar flow based on wall attachment effect casts with energy-conservation stripping air knife |
| CN106111923B (en) * | 2016-08-30 | 2018-01-16 | 烟台万隆真空冶金股份有限公司 | A kind of planar flow casting based on wall attachment effect peels off air knife with energy-conservation |
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