CN107234218A - The embedded nozzle of weld pool for preparing amorphous band - Google Patents
The embedded nozzle of weld pool for preparing amorphous band Download PDFInfo
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- CN107234218A CN107234218A CN201610483795.5A CN201610483795A CN107234218A CN 107234218 A CN107234218 A CN 107234218A CN 201610483795 A CN201610483795 A CN 201610483795A CN 107234218 A CN107234218 A CN 107234218A
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- molten steel
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- lip
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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
- B22D11/064—Accessories therefor for supplying molten metal
- B22D11/0642—Nozzles
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Abstract
The invention discloses a kind of embedded nozzle of weld pool for being used to prepare amorphous band.The nozzle includes：Nozzle body, including the molten steel containing body of molten steel receiving portion and the weld pool protective extended downwardly from the molten steel containing body lower surface are formed with, it is formed with weld pool receiving portion；And mouth is stitched on main body, the lower bottom wall for being arranged at the molten steel containing body, including dismountable two panels mouth seam split plate, the mouth that is centrally formed with of mouth seam split plate is stitched described in the two panels after combination, and the mouth seam makes the molten steel containing body be connected with the weld pool protective.The present invention realizes the processing that ultra-narrow mouth is stitched by split type combination, the embedded nozzle of weld pool, greatly reduce impact of the roll surface air-flow to weld pool, reduce the bubbles volume that spray is involved in weld pool bottom with during, cause laminar flow molten steel is stable to spread into cooling body surface simultaneously, strip surface roughness is advantageously reduced, the amorphous band of 1 20 μ m-thicks can be successfully prepared.
Description
Technical field
The present invention relates to a kind of nozzle for being used to prepare amorphous band, and in particular to one kind is used to prepare amorphous ribbon
The embedded nozzle of weld pool of material, the nozzle is particularly suitable for preparing amorphous ultrathin band.
Background technology
Amorphous metal alloy is better than conventional metallic alloys due to lacking long range atomic order, therefore with many
Critical nature, to meet various applications, including：(1) because the electron scattering from atomic disorder makes
Obtaining amorphous magnet has high resistivity, reduces the loss of material, improves metal soft magnetic material
Frequency of use；(2) amorphous state does not have macroscopical magnetocrystalline anisotropy, and it is relatively easy that magnetization is rotated, because
And relatively high magnetic conductivity can be obtained；(3) amorphous alloy does not have discontinuous (crystal boundary or the segregation) of microstructure
With pinning domain wall.Therefore magnetize relatively easy by magnetic domain wall moving, therefore reduce coercivity H；(4)
Many amorphous alloys have good anti-oxidant and corrosion resistance.These performances of non-crystaline amorphous metal, make
It has a wide range of applications in fields such as machinery, communication, Aero-Space, auto industry, chemistry.
The non-crystaline amorphous metal of current large-scale commercial production is mainly amorphous alloy strips, amorphous alloy strips
Prepare and use planar flow casting method more, main flow is to pour into the alloy liquid of melting in nozzle bag, melt
Melt liquid by be arranged at nozzle bag bottom nozzle slot injection to atwirl cooling roller surface, close
Golden liquid is cooled rapidly, so as to form the thick alloy thin band of dozens of micron.The major function of nozzle be to
Spray and provide the high-temperature molten steel with stabilizing solution stream and pressure with process, keep its weld pool formed on copper roller
Have in the stability of stable state, therefore nozzle interior structure to the quality of amorphous alloy strips important
Influence.
Existing nozzle arrangements are referring to Figure 12, and it only includes molten steel containing body and mouth seam 10, and the molten steel is accommodated
Body includes the first molten steel and accommodates body sidewall (not shown), the second molten steel receiving body sidewall 1, the 3rd molten steel
Accommodate body sidewall (not shown), the 4th molten steel and accommodate body sidewall 1 ', the first molten steel accommodates body sidewall, the
Two molten steel accommodate body sidewall 1, the 3rd molten steel receiving body sidewall and the 4th molten steel receiving body sidewall 1 ' and connected successively
Connect and mouth seam 10 be directly machined with bottom wall 5 ' to be formed under the molten steel containing body perisporium of closing, molten steel containing body,
Bottom wall 5 ' surrounds the molten steel receiving portion of upper opening under the molten steel containing body perisporium, molten steel containing body；Wherein
The length direction that first molten steel accommodates body sidewall and the 3rd molten steel accommodates body sidewall with the mouth stitches 10 is flat
OK.
Nozzle is not only the critical process equipment part of production amorphous alloy ribbon, is also amorphous alloy ribbon life
The running stores of production.The quality and production cost of its quality, life-span and cost determination amorphous alloy ribbon.
At present using the more nozzle for being BN materials, required size and shape being made up of the milling of BN blanks,
Mouth seam can be really sized according to process requirements, because boron nitride has good machinability, intensity
It is suitable and good with molten steel wetability with hardness, make nozzle using this material substantially in current actual production.
The width of alloy thin band depends on the mouth seam length of nozzle, and the thickness of band depends primarily on the mouth seam of nozzle
Width.In order to obtain complete amorphous microstructure, nozzle must be a narrow slit, and nozzle mouth seam
Width is generally 0.2~0.3mm, under suitable roller mouth spacing, the amorphous alloy strips thickness one of spray
As be 20~40 μm.Want to obtain thinner amorphous alloy strip it is necessary to be stitched using narrower nozzle, however,
Prior art is to use the slotting cutter less than 1mm to carry out digital control processing, causes processing charges and cutter expense all
It is very high, and the technique of cracking is difficult to prepare nozzle mouth of the slit width less than 0.2mm to stitch.Thickness of strip right and wrong
One of key parameter of peritectic alloy band, the reduction of thickness of strip can effectively reduce the loss of band,
Then the efficiency and performance of follow-up iron core be have impact on.In the prior art, the amorphous alloy strips thickness of spray
It is not less than 20 μm, the further reduction of limitation band loss.Therefore, obtaining thinner amorphous alloy strips is
It is badly in need of the technical problem solved at present.
Weld pool is in dynamic balance state when planar flow casting method prepares amorphous band, only enters from nozzle bag
The melt of weld pool and the amorphous band extracted from weld pool bottom reach dynamic equilibrium, the steady production of amorphous band
It could continue.Now nozzle mouth seam length directly determines bandwidth, and nozzle mouth slit width degree directly determines tape thickness.
Meanwhile, the horizontal disturbance of weld pool inner laminar flow molten steel and weld pool unstability can increase the roughness on the band scope of freedom
With the depth of cut, so as to influence the thickness of band indirectly, on the other hand, air-flow is moved into chill roll
The bubble that weld pool bottom is formed, the thickness of band can be also influenceed indirectly.
In figure 12 it can be seen that existing nozzle is without the weld pool protective below molten steel containing body, weld pool is equal
Exposure in atmosphere, is influenceed rapidly to cool down by the air-flow on the cooled roller top layer rotated, cooling than more serious,
In addition nozzle is exposed, and to nearly form necessary weld pool shape with chill roll, the exposed plane of nozzle exists
Cool quickly at the surface of the chill roll of quick rotation.To keep the temperature of nozzle, it is necessary to constantly flow through spray
The molten metal of mouth has heat effect to nozzle, or even loses nozzle using complicated flame curtains weld pool protection technique
The heat gone balances each other with molten metal to the heat supplement of nozzle, and technical difficulty is high, and effect is poor.Also, with
The reduction of thickness, because the influence of the roughness to thickness on the band scope of freedom caused by weld pool unstability is got over
Come bigger, while the bubble for entering the formation of weld pool bottom with roll surface air-flow caused by chill roll rotation also can be anti-
The surface of band is reflected, the roughness of band, and the increase of roughness is added, band can be drastically reduced
Fill factor.Therefore prior art is difficult to spray that surface quality is good, thickness is 1-20 microns, fill factor
High amorphous ultrathin band.
The content of the invention
For traditional NB nozzles ultra-narrow mouth seam it is difficult to process, it is big to prepare strip surface roughness with conventional spout
Problem, it is an object of the invention to provide a kind of embedded nozzle of weld pool for being used to prepare amorphous band, passes through
The processing of mouth seam particularly ultra-narrow mouth seam is realized in the split type combination of mouth seam, using the embedded nozzle of weld pool, reduction
Impact of the roll surface air-flow to weld pool, reduces the bubbles volume that weld pool bottom is involved in during spray band, makes simultaneously
Obtain laminar flow molten steel stabilization and spread into cooling body surface, final reduction strip surface roughness reaches preparation for non-
The purpose of crystal zone material particularly non-crystaline amorphous metal ultra-thin strip.
To achieve these goals, the present invention uses following technical scheme：
A kind of embedded nozzle of weld pool for being used to prepare amorphous band, including：
Nozzle body, including：Molten steel containing body, is formed with molten steel receiving portion, is come from for receiving and buffering
The molten steel of nozzle bag；And weld pool protective, extend downwardly, be formed with from the molten steel containing body lower surface
Weld pool receiving portion, for the weld pool for protecting the molten steel spray nozzle to be formed after stitching；And
Mouth is stitched on main body, the lower bottom wall for being arranged at the molten steel containing body, including dismountable two panels mouth seam point
Body plate, the mouth that is centrally formed with of mouth seam split plate is stitched described in the two panels after combination, and the mouth seam makes the molten steel
Containing body is connected with the weld pool protective.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
The lower bottom wall of the molten steel containing body is provided with opening portion, and split is stitched for mouth described in the two panels after fixed Combination
Plate, the outer shape and the outer shape of the opening portion of mouth seam split plate described in the two panels after combination match.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
The material of the nozzle body and mouth seam main body is identical or different.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
In four sides of the opening portion any two opposite flank be upside-down trapezoid, or the opening portion four
Individual side is upside-down trapezoid；Preferably, in the opening portion, consistent with mouth seam width two
Individual opposite flank is upside-down trapezoid, and the difference of edge lengths up and down of the upside-down trapezoid is 2~10mm.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
Described in two panels after combination detent, the four of the opening portion are provided with the lateral surface of mouth seam split plate
It is provided with locating convex block on individual side, the locating convex block is caught in the detent with by two after combination
Mouth seam split plate is firmly fixed at the opening portion described in piece.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
The width of mouth seam for 0.05mm~0.3mm (such as 0.06mm, 0.08mm, 0.1mm, 0.15mm, 0.2mm,
0.25mm, 0.3mm), length is 0.5mm~1000mm；It is highly preferred that the length direction stitched along mouth, described
Mouth seam width difference be less than ± 0.025mm (such as 0.002mm, 0.005mm, 0.008mm, 0.01mm,
0.015mm、0.018mm、0.02mm、0.024mm)。
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
The upper surface of mouth seam split plate is provided with coating described in two panels.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
The molten steel containing body includes the first molten steel and accommodates body sidewall, the second molten steel receiving body sidewall, the 3rd molten steel appearance
Receiving body sidewall, the 4th molten steel accommodates body sidewall, and first molten steel accommodates body sidewall, the second molten steel containing body
Side wall, the 3rd molten steel accommodate body sidewall and the 4th molten steel accommodates body sidewall and is sequentially connected to form the steel of closing
Bottom wall and institute is arranged under liquid containing body perisporium, the molten steel containing body perisporium, the molten steel containing body
State the molten steel that mouth seam split plate described in the two panels in the wall opening portion of molten steel containing body bottom surrounds upper opening
Receiving portion；First molten steel accommodates body sidewall and the 3rd molten steel accommodates the length that body sidewall is stitched with the mouth
Spend direction parallel.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
The weld pool protective includes：
Anterior lip, extends vertically downward from the first molten steel containing body side wall lower ends face；
Posterior lip, extends vertically downward from the 3rd molten steel containing body side wall lower ends face；
First lateral lip, extends vertically downward from the second molten steel containing body side wall lower ends face；
Second lateral lip, extends vertically downward from the 4th molten steel containing body side wall lower ends face；
The anterior lip, first lateral lip, the posterior lip and second lateral lip are sequentially connected with formation
The weld pool receiving portion of portion's opening；
It is highly preferred that the height of the anterior lip is not less than the height of the posterior lip；It is highly preferred that the anterior lip
Height be higher than the posterior lip height.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
It is identical or close that the shape of the weld pool receiving portion sprays the weld pool shape formed after the mouth seam with molten steel.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
The inwall of the posterior lip is that the wall thickness of posterior lip be obliquely installed and described is gradually reduced from top to bottom from top to bottom；
Preferably, the inwall of the posterior lip is that linear pattern is obliquely installed or convex arc line style is obliquely installed.
Above-mentioned for preparing in the embedded nozzle of weld pool of amorphous band, as a kind of preferred embodiment,
The shape of the lower surface of the anterior lip is identical with corresponding cooling roll surface shape；The shape of the lower surface of the posterior lip
Shape is identical with corresponding cooling roll surface shape；The shape of the lower surface of first lateral lip and corresponding chill roll
Face shape is identical；The shape of the lower surface of second lateral lip is identical with corresponding cooling roll surface shape；
Preferably, the vertical range of the lower surface of the anterior lip and the cooling roller surface is not less than 0.05mm (ratios
Such as 0.06mm, 0.08mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm)；
The lower surface of the posterior lip with it is described cooling roller surface vertical range be not less than 0.1mm (such as 0.11mm,
0.15mm、0.2mm、0.25mm、0.3mm、0.35mm、0.4mm)；It is highly preferred that under the posterior lip
End face is 0.1-0.3mm with the vertical range for cooling down roller surface.
Compared with prior art, the advantage of the invention is that：Realize what ultra-narrow mouth was stitched by split type combination
Processing, using the embedded nozzle of weld pool, greatly reduces impact of the roll surface air-flow to weld pool, reduces spray band
During be involved in the bubbles volume of weld pool bottom, while so that laminar flow molten steel is stable to spread into cooling body surface, having
Beneficial to reduction strip surface roughness, the amorphous band of 1-20 μ m-thicks can be successfully prepared.The invention is not only improved
The utilization rate of nozzle material, has saved the energy and production cost, and improves amorphous band surface quality,
Then follow-up core lamination stack coefficient and performance are improved.Specifically：
(1) it is of the present invention for amorphous band prepare the embedded nozzle of weld pool, nozzle lower end surround with
The corresponding cavity of weld pool shape is weld pool receiving portion, and when carrying out planar flow casting, melt is formed on roll surface
Weld pool be located at the semiclosed cavity inside of the only lower ending opening adjacent with roll surface, nozzle surrounding entity is to weld pool
Protection is formed, impact of the roll surface air-flow to weld pool is greatly reduced, nozzle and weld pool is slow down and turns with chill roll
The situation that dynamic temperature declines, can extend the service life of nozzle, and can improve amorphous alloy strips
Quality.
(2) the weld pool embedded nozzle of the present invention prepared for amorphous band, described mouth is stitched by two
Individual mouth seam split plate is combined, and the agent structure for constituting mouth seam can be with individually designed, therefore is adapted to make multiple
Miscellaneous nozzle arrangements, and nozzle body (i.e. molten steel containing body and weld pool protective) and mouth seam main body are (i.e.
Two mouth seam split plates) different refractory materials can be chosen, prevent from deforming or meet various technological requirements；
Large-sized nozzle can be made simultaneously, makes it possible the amorphous alloy strips of the wider size of spray.
(3) the weld pool embedded nozzle of the present invention prepared for amorphous band, described mouth seam main body
Combined by two split plates, be that junction forms ultra-narrow mouth seam in two split plate joints, it is split type
Mouth seam meter, greatly reduce the difficulty of processing of nozzle, can be adapted to make complicated nozzle arrangements,
Prevent from deforming or meet various technological requirements；Large-sized nozzle can be made simultaneously, makes the wider size of spray
Amorphous alloy strips be possibly realized.
(4) the weld pool embedded nozzle of the present invention prepared for amorphous band, described nozzle is by spraying
Mouth main body and mouth seam body combination are formed, and the top of the nozzle body is the lower bottom wall setting of molten steel containing body
Opening portion, mouth seam main body has the profile being adapted with opening portion, the two panels mouth seam split plate outer wall after combination
Each respective side wall undersized of each size than opening portion, two panels mouth seam split plate can be from molten steel containing body
Upper opening insertion opening portion in, after expanded by heating, two panels mouth after combination stitches split plate outer wall with opening
Each respective side wall formation closing connection of oral area, so as to form the embedded nozzle of weld pool, reduces high-temp glue
Use, reduce cost.
(5) the weld pool embedded nozzle of the present invention prepared for amorphous band, described nozzle is by spraying
Mouth main body and mouth seam body combination are formed, and the nozzle body can repeat to repair, and be used for multiple times, Ke Yi great
Big reduction nozzle cost, is greatly lowered the production cost of amorphous alloy strips.
(6) the weld pool embedded nozzle of the present invention prepared for amorphous band, described nozzle anterior lip
It is close to roll surface, greatly prevents during spray band, roll surface air-flow is involved in the probability of weld pool bottom, so as to drop
Low know clearly prepares the roughness that band pastes roll surface, improves the surface quality that band pastes roll surface.
(7) the weld pool embedded nozzle of the present invention prepared for amorphous band, described nozzle posterior lip
It is closely coupled with weld pool lower end, the weld pool scope of freedom is formed and scraped and correcting action, amorphous alloy strip is reduced
Material is disturbed to the transverse direction of laminar flow molten steel, so as to reduce the roughness for preparing the band scope of freedom, improves band
The surface quality on the scope of freedom.
Brief description of the drawings
Fig. 1 is the embedded nozzle exterior structural upright view of weld pool of the present invention；
Fig. 2 is, along the embedded nozzle plane schematic diagram of weld pool after line A-A cutting shown in Fig. 1, to show edge
The front view of the embedded nozzle of weld pool of the present invention after line A-A cutting shown in Fig. 1；
Fig. 3 is to be not provided with the embedded nozzle plane schematic diagram of weld pool that mouth seam main body i.e. two piece mouth stitches split plate,
I.e. the front view of nozzle body, main body is stitched equivalent to mouth is not provided with Fig. 2；
Fig. 4 is the top view of the embedded nozzle of weld pool of the present invention；
Fig. 5 is the embedded nozzle of the weld pool i.e. nozzle for being not provided with the first mouth seam split plate and the second mouth seam split plate
The top view of main body；
Fig. 6 is the upward view of the embedded nozzle of weld pool of the present invention；
Fig. 7 is the embedded nozzle of the weld pool i.e. nozzle for being not provided with the first mouth seam split plate and the second mouth seam split plate
The upward view of main body；
Fig. 8 is, along the embedded nozzle plane schematic diagram of weld pool after line B-B cutting shown in Fig. 1, to show edge
The left side view of the embedded nozzle of weld pool of the present invention after line B-B cutting shown in Fig. 1, wherein, posterior lip inner surface
It is obliquely installed for linear pattern；
Fig. 9 is the embedded nozzle of the weld pool i.e. nozzle for being not provided with the first mouth seam split plate and the second mouth seam split plate
The left side view of main body, split plate and the second mouth seam split plate are stitched equivalent to the first mouth is not provided with Fig. 8；
Figure 10 is, along the embedded nozzle plane schematic diagram of weld pool after line B-B cutting shown in Fig. 1, to show edge
The left side view of the embedded nozzle of weld pool of the present invention after line B-B cutting shown in Fig. 1, wherein, posterior lip inner surface
It is obliquely installed for convex arc streamlined；
Figure 11 is that the first mouth seam split plate and the second mouth after another mouth seam main body is combined stitch facing upward for split plate
View；
Figure 12 is the structural representation of existing nozzle.
Reference is as follows：
1st, the second molten steel accommodates body sidewall；11st, the second molten steel containing body side wall inner surfaces；12nd, the second molten steel
Containing body side wall lower ends face；1 ', the 4th molten steel accommodates body sidewall；11 ', the 4th molten steel accommodates table in body sidewall
Face；12 ', the 4th molten steel containing body side wall lower ends face；2nd, the first molten steel accommodates body sidewall；21st, the first steel
Liquid containing body side wall inner surfaces；22nd, the first molten steel containing body side wall lower ends face；2 ', the 3rd molten steel containing body
Side wall；21 ', the 3rd molten steel containing body side wall inner surfaces；22 ', the 3rd molten steel containing body side wall lower ends face；
3rd, the first lateral lip；32nd, the first lateral lip lower surface；3 ', second lateral lip；32 ', second lateral lip lower end
Face；4th, anterior lip；41st, anterior lip inner surface；42nd, anterior lip lower surface；4 ', posterior lip；41 ', table in posterior lip
Face (also referred to as posterior lip inwall)；42 ', posterior lip lower surface；
5,5 ', bottom wall under molten steel containing body；51st, opening portion；6th, molten steel receiving portion；7th, weld pool receiving portion；
8th, the first mouth seam split plate；82, the first mouth seam split plate bottom surface；8 ', second mouth stitches split plate；82 ',
Second mouth stitches split plate bottom surface；83 ', detent；9th, outer；10th, mouth is stitched
Embodiment
In order that present disclosure is more likely to be clearly understood, below according to the specific embodiment of the present invention
And with reference to accompanying drawing, the present invention is further detailed explanation.
Provided by the present invention for the embedded nozzle of weld pool for preparing amorphous band, referring to Fig. 1-11,
Including：Nozzle body and it is arranged at and is used for the mouth seam main body for forming mouth seam on nozzle body, nozzle body includes
Molten steel containing body and the weld pool protective extended downwardly from molten steel containing body lower surface, the mouth seam master
Body is arranged on the lower bottom wall of the molten steel containing body, with formed mouth seam and by mouth seam make molten steel containing body and
Weld pool protective is connected.Above part is illustrated one by one below.
Molten steel containing body, is formed with molten steel receiving portion 6, for receiving and buffering the molten steel from nozzle bag；Steel
The shape of liquid receiving portion 6 can be cylinder, cuboid, square, inverted prismatoid etc..
Specifically, molten steel containing body include the first molten steel accommodate body sidewall 2, the second molten steel accommodate body sidewall 1,
3rd molten steel accommodates body sidewall 2 ', the 4th molten steel and accommodates body sidewall 1 '.Wherein, the first molten steel accommodates body sidewall
2nd, the second molten steel accommodates body sidewall 1, the 3rd molten steel and accommodates body sidewall 2 ' and the 4th molten steel receiving body sidewall 1 '
Lateral edges be sequentially connected to form the molten steel containing body perisporium of closing, the first molten steel containing body side wall inner surfaces
21st, the second molten steel containing body side wall inner surfaces 11, the 3rd molten steel containing body side wall inner surfaces 21 ', the 4th steel
Liquid containing body side wall inner surfaces 11 ' can be inverted trapezoidal, referring to Fig. 2-4 and Fig. 8-10, thus shape
Into the molten steel receiving portion 6 of inverted prismatoid；And the first molten steel containing body wall outer surface, the second molten steel are accommodated
Body sidewall outer surface, the 3rd molten steel containing body wall outer surface, the 4th molten steel containing body wall outer surface are then
Rectangle straight down.
Molten steel containing body also includes bottom wall 5 under bottom wall 5 under molten steel containing body, molten steel containing body and is provided with opening portion
51, for the first mouth seam split plate 8 after fixed Combination and the second mouth seam split plate 8 ', opening portion 51 is opened up
In the center of the lower bottom wall 5 of molten steel containing body, it makes molten steel containing body be connected with weld pool protective, opened
Oral area 51 can be cylinder, cuboid, square, inverted prismatoid etc., it is preferable that opening portion 51
Four sides in any two opposite flank be upside-down trapezoid, or four sides of opening portion 51 are down
Trapezoidal i.e. opening portion 51 is put for inverted prismatoid；It is further preferred that in opening portion 51, it is wide with mouth seam 10
It is upside-down trapezoid to spend two consistent opposite flanks of direction, and the difference of edge lengths up and down of the upside-down trapezoid for 2~
10mm, is so conducive to mouth to stitch agent structure and is caught in the opening portion, and fixes mouth seam main body, referring to figure
1-10.Outer shape and the opening portion of the first mouth seam split plate 8 and the second mouth seam split plate 8 ' after combination
51 outer shape matches, and it can be just caught in opening portion 51, that is to say, that first after combination
Mouth stitches each wall chi of each size than opening portion 51 of the outer wall of split plate 8 and the second mouth seam split plate 8 '
Very little smaller, mouth seam main body can be out of, nozzle body upper opening insertion opening portion 51, the mouth after expanded by heating
Seam body outer wall face is connected with the formation closing of opening portion internal face.Mouth seam main body is fixed in order to more firm
In in opening portion 51, the bottom of four sides of the opening portion is provided with locating convex block (not shown),
And multiple detents 83 ' being engaged with the locating convex block are provided with mouth seam main body lateral surface, referring to figure
11, so that locating convex block is caught in detent 83 ', more it is firmly fixed so as to realize.
Bottom wall 5 and bottom wall under the molten steel containing body is arranged under molten steel containing body perisporium, molten steel containing body
Two panels mouth seam split plate 8,8 ' in opening portion 51 surrounds the molten steel receiving portion 6 of upper opening；First molten steel
Accommodate the length direction that the molten steel of body sidewall 2 and the 3rd accommodates body sidewall 2 ' with mouth stitches 10 parallel.
Weld pool protective, extends downwardly from molten steel containing body lower surface, weld pool receiving portion 7 is formed with, for protecting
The weld pool formed after shield molten steel spray nozzle seam 10.The shape of weld pool receiving portion 7 can be cylinder, cuboid,
Any possible shape such as square, inverted prismatoid, the preferably shape of weld pool receiving portion 7 are sprayed with molten steel
Go out the weld pool shape formed after mouth seam 10 identical or close.The weld pool that can so adequately protect does not destroy weld pool
Shape.
Specifically, weld pool protective includes：Anterior lip 4, it is vertical from the first molten steel containing body side wall lower ends face 22
Extend downwardly, the outside wall surface that the outer surface of anterior lip 4 accommodates body sidewall 2 with the first molten steel is flushed, table in anterior lip
Face 41 can be extend vertically downward or convex is extended downwardly or linear pattern is extended obliquely downward,
Preferably, its thickness accommodates the thickness of body sidewall 2 slightly larger than the first molten steel, and anterior lip inner surface 41 is vertically downward
Extension, such structure is identical or close with the shape of weld pool respective face.Posterior lip 4 ', is accommodated from the 3rd molten steel
Body sidewall lower surface 22 ' extends vertically downward, and the outer surface of posterior lip 4 ' accommodates body sidewall 2 ' with the 3rd molten steel
Outside wall surface flush, posterior lip inner surface (i.e. inwall) 41 ' can be extend vertically downward or
Convex is extended downwardly or linear pattern is extended obliquely downward, it is preferable that posterior lip inner surface 41 ' is from top to bottom
The wall thickness of posterior lip be obliquely installed and described is gradually reduced from top to bottom；It is highly preferred that the inwall of the posterior lip
(referring to Fig. 9) is obliquely installed for linear pattern or convex arc line style is obliquely installed on (referring to Figure 10), posterior lip 4 '
The thickness of end accommodates the thickness of body sidewall 2 ', such structure and weld pool respective face slightly larger than the 3rd molten steel
Shape is identical or close.First lateral lip 3, extends vertically downward from the second molten steel containing body side wall lower ends face 12,
The outside wall surface that the outer surface of first lateral lip 3 accommodates body sidewall 1 with the second molten steel is flushed, the first lateral lip inner surface
Can be extend vertically downward or convex is extended downwardly or linear pattern is extended obliquely downward, it is excellent
Selection of land, its thickness accommodates the thickness of body sidewall 1 slightly larger than the second molten steel, and the first lateral lip inner surface is vertically downward
Extension, such structure is identical or close with the shape of weld pool respective face.Second lateral lip 3 ', from the 4th molten steel
Containing body side wall lower ends face 12 ' extends vertically downward, and the outer surface of the second lateral lip 3 ' is accommodated with the 4th molten steel
The outside wall surface of body sidewall 1 ' is flushed, and the second lateral lip inner surface can be extending vertically downward or convex
Arc is extended downwardly or linear pattern is extended obliquely downward, it is preferable that its thickness is slightly larger than the 4th molten steel containing body
The thickness of side wall 1 ', the second lateral lip inner surface extends vertically downward, the shape of such structure and weld pool respective face
Shape is identical or close.Anterior lip 4, the first lateral lip 3, posterior lip 4 ' and the second lateral lip 3 ' lateral edges successively
Connect to form the weld pool receiving portion 7 of lower openings.
The height of anterior lip 4 is not less than the height of posterior lip 4 '；Preferably, the height of anterior lip 4 is higher than posterior lip 4 '
Height.The shape of anterior lip lower surface 42 is identical with corresponding cooling roll surface shape；Posterior lip lower surface 42 '
Shape is identical with corresponding cooling roll surface shape；The shape of first lateral lip lower surface 32 and corresponding cooling roll surface
Shape is identical；The shape of second lateral lip lower surface 32 ' is identical with corresponding cooling roll surface shape.Preferably,
Anterior lip lower surface 42 with it is described cooling roller surface vertical range be not less than 0.05mm (such as 0.06mm,
0.08mm、0.1mm、0.15mm、0.2mm、0.25mm、0.3mm、0.35mm、0.4mm)；Posterior lip lower end
Face 42 ' with it is described cooling roller surface vertical range be not less than 0.1mm (such as 0.11mm, 0.15mm, 0.2mm,
0.25mm、0.3mm、0.35mm、0.4mm)；It is highly preferred that posterior lip lower surface 42 ' and the chill roll table
The vertical range in face is 0.1-0.3mm.Anterior lip 4 is close to roll surface, prevents spray band process bubble from being involved in.Posterior lip 4 '
It is closely coupled with weld pool lower end, the weld pool scope of freedom is formed and scraped and correcting action, amorphous alloy strip is reduced
Material is disturbed to the transverse direction of laminar flow molten steel.
In the present invention, anterior lip 4 and posterior lip 4 ' are for the chill roll direction of motion, to open cooling
It is anterior lip 4 that the minimum point of chill roll, which turns to pass through at first near nozzle, after roller, when remaining static, it
What is passed through afterwards is nozzle posterior lip 4 '.
Mouth stitches main body, is arranged in the opening portion 51 of bottom wall 5 under molten steel containing body, is by dismountable two panels
What mouth seam split plate 8,8 ' was combined, the center of the two panels mouth seam split plate 8,8 ' after combination is formed with
Mouth seam 10, referring to Fig. 4,6 and 11, mouth seam 10 makes molten steel containing body be connected with weld pool protective.Mouth seam master
The profile of body is depending on the shape of opening portion 51, in its lucky energy clamping and opening portion 51, it is possible to formed
It is tightly connected.In order to preferably fix mouth seam main body, mouth described in the two panels after combination stitches the lateral surface of split plate
On multiple detents 83 ' can be set, referring to Figure 11, the detent 83 ' stitches the outer of split plate in mouth
It is opening, opening that side and the first mouth, which stitch split plate bottom surface 82 or the first mouth seam split plate bottom surface 82 ',
Corresponding locating convex block is also equipped with four sides in portion 51, it is arranged at four sides of opening portion 51
Bottom, to realize the clamping of detent 83 ' and locating convex block, locating convex block is caught in detent 83 '
In be firmly fixed at opening portion 51 so that the two panels mouth after combination is stitched into split plate 8,8 '.
Mouth seam 10 width for 0.05mm~0.3mm (such as 0.06mm, 0.08mm, 0.1mm, 0.15mm,
0.2mm, 0.25mm, 0.3mm), length is 0.5mm~1000mm；It is highly preferred that the length side stitched along mouth
To the width difference of, mouth seam be less than ± 0.025mm (such as 0.002mm, 0.005mm, 0.008mm,
0.01mm、0.015mm、0.018mm、0.02mm、0.024mm)。
The materials such as BN, MgO, SiC, Si3N4, BN can be respectively adopted in nozzle body and mouth seam main body, or
Other available materials.Mouth seam split plate is that mouth seam main body can select unlike material with nozzle body, for example
Mouth seam split plate can use boron nitride composite easy to process and good with molten steel wettability,
And nozzle body can use the more preferable zirconium oxide of thermal deformation resistant performance or metal shell, that is to say, that can
With the special material nozzle more matched therewith according to the performance design of different molten steel.
The embedded nozzle of weld pool that the present invention is provided is adapted to the amorphous band of the various thickness of production, is particularly suitable for
Produce non-crystaline amorphous metal ultra-thin strip of the thickness below 20 μm.
Mouth seam is centrally formed in mouth seam split plate described in two panels after combination, therefore nozzle mouth seam is easy to process,
The problem that traditional milling cutter is difficult to prepare ultra-narrow mouth seam is overcome, being particularly suitable for processing is used for amorphous ultrathin band system
Standby ultra-narrow mouth seam.
First mouth stitches split plate 8 and the upper surface of the second mouth seam split plate 8 ' is stitched under split plate with the first mouth
The mouth seam relative surface of split plate bottom surface 82 ' of bottom surface 82 and second namely the surface directly contacted with molten steel
Provided with coating, molten steel can be improved the wetability of split plate is stitched with mouth, so that bag difficulty is opened when reducing band processed,
It is also significant to industrial production, depending on the coating material will be according to molten steel component, as long as can increase
Plus molten steel stitches the wetability of split plate surface with mouth.
Below by instantiation, the present invention will be described.
Embodiment 1
Weld pool embedded nozzle of the present invention for spray amorphous alloy ribbon, described nozzle is by spraying
Mouth main body and mouth seam body combination are formed, in the present embodiment, and its nozzle body material uses BN, spray seam master
Body material uses BN composites；With mouth stitch width it is consistent mouth seam main body two opposite exterior lateral sides faces into
Wide at the top and narrow at the bottom is trapezoidal, and two opposite exterior lateral sides faces of the mouth seam main body consistent with mouth seam length direction are long in addition
Square, the height of nozzle body is 8mm, and the upper surface width (i.e. mouth seam width) of nozzle body is
12mm, the lower surface width (i.e. mouth seam width) of nozzle body is 8mm；Opening portion inner wall size compares mouth
Stitch the big 0.02mm of main body respective external wall size.Nozzle anterior lip lower surface it is vertical with the chill roll immediately below it away from
From for 0.05mm, the vertical range of nozzle posterior lip lower surface and the chill roll immediately below it is 0.15mm, mouth seam
Vertical range with the chill roll immediately below it is 0.25mm.In use, mouth is stitched into main body from nozzle master first
Combination nozzle is constituted in the opening portion of the top insertion nozzle body of body, by the upper fire resisting of covering around combination nozzle
Material, and it is fixed on nozzle bag lower end.Then the lower bottom wall portion position of molten steel containing body is preheated, preheated
To 1250 DEG C, mouth seam body outer wall is connected with the formation closing of opening portion inwall after expanded by heating.Therefore mouth is stitched
Main body and nozzle body constitute the entity structure of whole combination nozzle；Lower end outlet and the molten steel of nozzle bag are accommodated
Boring structure, mouth seam and the weld pool protective of body are communicated, and constitute the passage of high-temperature molten steel.In production
High-temperature molten steel, which sequentially passes through nozzle bag main body, the outlet of nozzle bag lower end, molten steel receiving portion, mouth seam and weld pool, to be held
The portion of receiving is cast on the chill roll of rotation at a high speed, the amorphous alloy ribbon of width and thickness needed for obtaining.When one
After the secondary spray end of tape, combination nozzle is removed into standing and is cooled to room temperature, combination nozzle is reverted to outside mouth seam main body
The wall size state smaller than the inner wall size of opening portion, now can take out mouth seam main body from nozzle body,
New mouth is reinserted again stitches main body with to be used.
Because mouth slit width degree is the principal element of decision thickness of strip, the present invention is provided with one group of contrast test,
Investigation nozzle mouth stitches the influence to preparing amorphous alloy strips thickness.The present invention with it is non-prepared by prior art
Peritectic alloy band composition is Fe5Co70Si15B10, be respectively adopted the embedded nozzle of weld pool of the present invention and
Existing conventional spout (i.e. shown in Figure 12), contrast experiment is carried out under identical technique, non-crystaline amorphous metal is prepared
The specific process parameter of band is listed in table 1.Using same process parameter, the embedded nozzle of weld pool and use tradition
Nozzle prepares non-crystaline amorphous metal state alloy thin band, test result indicates that, when other process conditions are identical, mouth slit width
Degree directly determines the thickness of band, and the obvious thickness of band prepared using the embedded nozzle of weld pool is smaller,
Thickness of strip is more consistent, and the surface roughness of band declines to a great extent on year-on-year basis, and concrete outcome contrast is listed in table 1
In.Serial number 1-5,7,9 are the amorphous alloy strips prepared using the embedded nozzle of weld pool of the present invention, sequence
Numbers 6,8,10 be the amorphous alloy strips prepared using traditional nozzle.Contrast is visible, using in weld pool
Embedded nozzle, is successfully prepared the good ultra-thin amorphous band of surface quality.
Table 1 uses the embedded nozzle of weld pool of the present invention and existing conventional spout technological parameter and result
Embodiment 2
Weld pool embedded nozzle of the present invention for spray amorphous alloy ribbon, described nozzle is by spraying
Mouth main body and mouth seam body combination are formed, in the present embodiment, and its nozzle body material uses BN, spray seam master
Body material uses BN composites；With mouth stitch width it is consistent mouth seam main body two opposite exterior lateral sides faces into
Wide at the top and narrow at the bottom is trapezoidal, and two opposite exterior lateral sides faces of the mouth seam main body consistent with mouth seam length direction are long in addition
Square, the height of nozzle body is 8mm, and the upper surface width (i.e. mouth seam width) of nozzle body is
12mm, the lower surface width (i.e. mouth seam width) of nozzle body is 8mm；Opening portion inner wall size compares mouth
Stitch the big 0.02mm of main body respective external wall size.Nozzle mouth stitches long 10mm, slit width 0.15mm, mouth seam with its just under
The vertical range of the chill roll of side is 0.25mm.In use, mouth is stitched into top of the main body from nozzle body first
Insert in the opening portion of nozzle body and constitute combination nozzle, by the upper refractory material of covering around combination nozzle, and
It is fixed on nozzle bag lower end.Then the lower bottom wall portion position of molten steel containing body is preheated, is preheated to 1250 DEG C,
Mouth seam body outer wall is connected with the formation closing of opening portion inwall after expanded by heating.Therefore mouth stitches main body and nozzle
Main body constitutes the entity structure of whole combination nozzle；The lower end outlet and the inside of molten steel containing body of nozzle bag are empty
Core structure, mouth seam and weld pool protective are communicated, and constitute the passage of high-temperature molten steel.Produce high temperature molten steel according to
Secondary process nozzle bag main body, the outlet of nozzle bag lower end, molten steel receiving portion, mouth seam and weld pool receiving portion are cast in
At a high speed on the chill roll of rotation, the amorphous alloy ribbon of width and thickness needed for obtaining.When once spraying the end of tape
Afterwards, combination nozzle is removed into standing and is cooled to room temperature, combination nozzle reverts to mouth seam body outer wall size ratio and opened
The small state of the inner wall size of oral area, now can take out mouth seam main body, then insert again from nozzle body
Enter new mouth and stitch main body with to be used.
Horizontal disturbance and weld pool unstability due to weld pool inner laminar flow molten steel can increase the coarse of the band scope of freedom
Degree and cut depth so that indirectly influence band thickness, on the other hand, air-flow with chill roll move into
Enter the bubble of weld pool bottom formation, the thickness of band can be also influenceed indirectly, the present invention is provided with one group to having a competition
Test, investigate nozzle anterior lip, nozzle posterior lip size to preparing the influence of amorphous alloy strips thickness, the present invention with
Amorphous alloy strips composition prepared by prior art is Fe5Co70Si15B10, and institute of the present invention is respectively adopted
The embedded nozzle of weld pool and existing conventional spout are stated, contrast experiment is carried out under identical technique, amorphous is prepared
The specific process parameter of alloy strip steel rolled stock is listed in table 1.Test result indicates that, when other process conditions are identical, use
The obvious thickness of band prepared by the embedded nozzle of weld pool is smaller, and thickness of strip is more consistent, with nozzle anterior lip
Apart from the reduction of chill roll surface distance, the patch roll surface roughness of the band of preparation declines to a great extent, but nozzle
Anterior lip apart from roll surface be less than 0.05mm when, nozzle easily encounters roll surface, and roll surface is damaged, therefore nozzle
Distance not preferably less than 0.05mm of the anterior lip apart from roll surface.General mouth seam is apart from roll surface 0.25-0.5mm to be formed
Stable weld pool, smelt surface tension is bigger, and the weld pool height formed under the same terms is higher.Posterior lip and weld pool
Lower end is closely coupled, and weld pool lower end is closely coupled, and the weld pool scope of freedom is formed and scraped and correcting action, reduces
Amorphous alloy strips are disturbed to the transverse direction of laminar flow molten steel.Minimum thickness of strip is reduced relative to weld pool anterior lip
Distance, therefore posterior lip is apart from roll surface not preferably less than 0.1mm, and the too low band easily directly with solidification of posterior lip connects
Touch, cut, then if posterior lip is too high, such as identical with roller mouth spacing, nozzle posterior lip are formed on the band scope of freedom
Scraping and to the horizontal correcting action disturbed of laminar flow molten steel to the weld pool scope of freedom is not had.Concrete outcome pair
Than being listed in Table 2 below.Serial number 1-5 is to use the embedded nozzle of weld pool of the present invention, and nozzle anterior lip is apart from roll surface
Amorphous alloy strips prepared by different distance.Serial number 6-10 is to use the embedded nozzle of weld pool of the present invention, spray
The amorphous alloy strips that mouth posterior lip is prepared apart from roll surface different distance.Contrast is visible, using the embedded spray of weld pool
Mouth, by coordinating the distance of nozzle anterior lip and nozzle posterior lip apart from roll surface, effectively improvement can prepare band
Surface roughness, so as to successfully prepare the good ultra-thin amorphous band of surface quality.
The technological parameter of 2 embodiment of table 2 and result
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to embodiment
Limit.For those of ordinary skill in the field, it can also be made on the basis of the above description
Its various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And by
Among this obvious changes or variations extended out is still in the protection domain of the invention.
Claims (10)
1. a kind of embedded nozzle of weld pool for being used to prepare amorphous band, it is characterised in that including：
Nozzle body, including：
Molten steel containing body, is formed with molten steel receiving portion, for receiving and buffering the molten steel from nozzle bag；
And
Weld pool protective, extends downwardly from the molten steel containing body lower surface, is formed with weld pool receiving portion,
For the weld pool for protecting the molten steel spray nozzle to be formed after stitching；And
Mouth is stitched on main body, the lower bottom wall for being arranged at the molten steel containing body, including dismountable two panels mouth seam point
Body plate, the mouth that is centrally formed with of mouth seam split plate is stitched described in the two panels after combination, and the mouth seam makes the molten steel
Containing body is connected with the weld pool protective.
2. the weld pool embedded nozzle according to claim 1 for being used to prepare amorphous band, its feature exists
In the lower bottom wall of the molten steel containing body is provided with opening portion, is stitched for mouth described in the two panels after fixed Combination
Split plate, mouth described in the two panels after combination stitches the outer shape and the outer shape phase of the opening portion of split plate
Matching；Preferably, the material of the nozzle body and mouth seam main body is identical or different.
3. the weld pool embedded nozzle according to claim 2 for being used to prepare amorphous band, its feature exists
In any two opposite flank is upside-down trapezoid, or the opening portion in four sides of the opening portion
Four sides be upside-down trapezoid；Preferably, it is consistent with mouth seam width in the opening portion
Two opposite flanks be upside-down trapezoid, and the upside-down trapezoid edge lengths up and down difference be 2~10mm.
4. the weld pool embedded nozzle according to claim 2 for being used to prepare amorphous band, its feature exists
In mouth described in the two panels after combination stitches and is provided with detent, the opening portion on the lateral surface of split plate
Four sides on be provided with locating convex block, the locating convex block is caught in the detent with will be after combination
Two panels described in mouth seam split plate be firmly fixed at the opening portion.
5. the weld pool embedded nozzle according to claim 1 for being used to prepare amorphous band, its feature exists
In the width of, mouth seam be 0.05mm~0.3mm, length is 0.5mm~1000mm；Preferably, edge
The length direction of mouth seam, the width difference of the mouth seam is less than ± 0.025mm；It is highly preferred that mouth described in two panels
The upper surface of seam split plate is provided with coating.
6. the weld pool embedded nozzle according to claim 1 for being used to prepare amorphous band, its feature exists
In the molten steel containing body includes the first molten steel and accommodates body sidewall, the second molten steel receiving body sidewall, the 3rd steel
Liquid accommodates body sidewall, the 4th molten steel and accommodates body sidewall, and first molten steel, which accommodates body sidewall, the second molten steel, to be held
Receiving body sidewall, the 3rd molten steel accommodates body sidewall and the 4th molten steel and accommodates body sidewall and be sequentially connected to form closing
Molten steel containing body perisporium, bottom wall and set under the molten steel containing body perisporium, the molten steel containing body
Mouth seam split plate is surrounded described in upper opening described in two panels in the molten steel containing body goes to the bottom wall opening portion
Molten steel receiving portion；First molten steel accommodates body sidewall and the 3rd molten steel accommodates body sidewall and stitched with the mouth
Length direction it is parallel.
7. the weld pool embedded nozzle according to claim 1 for being used to prepare amorphous band, its feature exists
In the weld pool protective includes：
Anterior lip, extends vertically downward from the first molten steel containing body side wall lower ends face；
Posterior lip, extends vertically downward from the 3rd molten steel containing body side wall lower ends face；
First lateral lip, extends vertically downward from the second molten steel containing body side wall lower ends face；
Second lateral lip, extends vertically downward from the 4th molten steel containing body side wall lower ends face；
The anterior lip, first lateral lip, the posterior lip and second lateral lip are sequentially connected with formation
The weld pool receiving portion of portion's opening；
Preferably, the height of the anterior lip is not less than the height of the posterior lip；It is highly preferred that the anterior lip
Highly it is higher than the height of the posterior lip.
8. the weld pool embedded nozzle according to claim 1 for being used to prepare amorphous band, its feature exists
In the weld pool shape formed after shape and molten steel ejection the mouth seam of the weld pool receiving portion is identical or close.
9. the weld pool embedded nozzle according to claim 7 for being used to prepare amorphous band, its feature exists
Gradually subtract from top to bottom in the wall thickness that the inwall of, the posterior lip is posterior lip be obliquely installed and described from top to bottom
It is small；Preferably, the inwall of the posterior lip is that linear pattern is obliquely installed or convex arc line style is obliquely installed.
10. the weld pool embedded nozzle according to claim 7 for being used to prepare amorphous band, its feature
It is, the shape of the lower surface of the anterior lip is identical with corresponding cooling roll surface shape；The lower end of the posterior lip
The shape in face is identical with corresponding cooling roll surface shape；The shape of the lower surface of first lateral lip with it is corresponding
Cool down roll surface shape identical；The shape of the lower surface of second lateral lip is identical with corresponding cooling roll surface shape；
Preferably, the lower surface of the anterior lip and the vertical range of the cooling roller surface are not less than 0.05mm；
The lower surface of the posterior lip and the vertical range of the cooling roller surface are not less than 0.1mm；It is highly preferred that described
The lower surface of posterior lip is 0.1-0.3mm with the vertical range for cooling down roller surface.
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| CN201610483795.5A CN107234218B (en) | 2016-06-27 | 2016-06-27 | A embedded nozzle of weld pool for preparing amorphous strip |
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| CN201610483795.5A CN107234218B (en) | 2016-06-27 | 2016-06-27 | A embedded nozzle of weld pool for preparing amorphous strip |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088585A1 (en) * | 2020-10-27 | 2022-05-05 | 安泰非晶科技有限责任公司 | Amorphous nanocrystalline alloy strip and manufacturing method therefor |
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| CN107234218B (en) | 2022-10-18 |
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