CN201942735U - Manufacturing device for R-T-B series rare earth type alloys - Google Patents
Manufacturing device for R-T-B series rare earth type alloys Download PDFInfo
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- CN201942735U CN201942735U CN2010206982523U CN201020698252U CN201942735U CN 201942735 U CN201942735 U CN 201942735U CN 2010206982523 U CN2010206982523 U CN 2010206982523U CN 201020698252 U CN201020698252 U CN 201020698252U CN 201942735 U CN201942735 U CN 201942735U
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Abstract
The utility model provides a manufacturing device for R-T-B series rare earth type alloys, which can improve cooling efficiency after casting and can be stably operated. The manufacturing device comprises a casting part and a crushing part, wherein the casting part is used for casting alloy melting liquid by a speed hardening cast method; the crushing part is used for crushing the cast alloy; the casting part is provided with a cooling roll for shock-cooling the alloy melting liquid to cast the cast alloy by using an internal water cooling mechanism (5); the water cooling mechanism (5) comprises a water guide pipe (51), a front chamber (57) and a plurality of water spray nozzles (52); the water guide pipe is arranged coaxially with a roll main body (41) and extending outwards from the interior of the roll main body for guiding cooling water in; the front chamber is connected to the water guide pipe; the water spray nozzles are arranged in a comb-shaped tubular extension mode and are connected to the front chamber; and each water spray nozzle is provided with a plurality of spray holes (52a) for spraying cooling water (W) which is guided into the roll main body by using the water guide pipe and the front chamber to the inner surface (41b) of the roll main body (41).
Description
Technical field
The utility model relates to a kind of manufacturing installation that the R-T-B that is adapted at uses such as permanent magnet is a rare earth alloy that is used for making, particularly, relate to a kind of manufacturing installation that can improve the cooling efficiency when casting and can realize the R-T-B based rare earth alloy of stable operation.
Background technology
In the past, even as the magnet that constitutes by the R-T-B based rare earth alloy that in permanent magnet, also has maximum magnetic energy product, because therefore its high characteristic is adapted at using in each field such as HD (hard disk drive), MRI (Magnetic resonance imaging), various electric motor.To can bring into play energy-efficient by the magnet set that this R-T-B based rare earth alloy the constitutes electric motor that rotor forms of packing into.Therefore, because in recent years except requirements of saving energy is improved constantly, the thermotolerance of R-T-B based rare earth alloy also improves, and the usage quantity that causes being applied to the R-T-B based rare earth alloy magnet in the various electric motor of household electrical appliances, air-conditioning, automobile etc. constantly increases.
In general,, therefore be generically and collectively referred to as Nd-Fe-B system or R-T-B based rare earth alloy, after this alloy is shaped and carrying out sintering, by its magnetization just can be accessed magnet because the main component of R-T-B based rare earth alloy is Nd, Fe, B.Here, as a rule, the R in the R-T-B based rare earth alloy is based on the material that will obtain after other rare earth element displacement with Pr, Dy, Tb etc. of the part of Nd, and is to comprise at least a in the rare earth element of Y.And T is the material that the part of Fe is obtained after with other transition element displacement such as Co, Ni.And B is a boron, its part can be replaced with C or N.In addition, also can will be added in the R-T-B based rare earth alloy as a kind of or multiple combination among the Cu, the Al that add element, Ti, V, Cr, Ga, Mn, Nb, Ta, Mo, W, Ca, Sn, Zr, the Hf etc.
The R-T-B based rare earth alloy that constitutes R-T-B based rare earth magnet is a kind of like this alloy,, will help the R as the ferromagnetism phase of magnetization that is
2T
14B is as principal phase, and coexistence have nonmagnetic, rare earth element to concentrate the back and low-melting rich R phase.Because the R-T-B rare earth alloy is a reactive metal, therefore generally in rare gas elementes such as vacuum or argon, fuses, cast.In addition, for the R-T-B rare earth alloy piece after adopting powder metallurgic method by casting is made sintered magnet, usually alloy block need be crushed to about 3 μ m (FSSS: drawing in magnetic field behind the powdered alloy mensuration of using Fisher sub-sieve sizer to carry out), and in sintering oven, carry out sintering with about 1000～1100 ℃ high temperature, then, heat-treat as required, mechanical workout, and carry out coating in order to improve erosion resistance and handle, thereby form sintered magnet (permanent magnet).
In the sintered magnet that is made of R-T-B based rare earth alloy, rich R has following important effect mutually:
1) fusing point is low, is liquid phase during sintering, helps the densification of magnet, therefore helps improving the magnetization degree.
2) eliminate the concavo-convex of crystal boundary, the nucleation site (nucleation site) of anti-magnetic region is reduced, improve coercive force.
3) make the principal phase magnetic insulation, increase coercive force.
Thereby, if the dispersion state of the rich R phase in the magnet after being shaped is poor, can cause then that local sintering is bad, magnetic reduces, therefore to be dispersed in the magnet after the shaping mutually be very important to rich R.In addition, be that the distribution of the rich R phase of sintered magnet has a significant impact as the R-T-B based rare earth alloy organizing of raw material to R-T-B.
And, be that another problem that produces in the casting of alloy is at R-T-B, generating in the alloy after casting has α-Fe.α-Fe has deformability, and it can not pulverized, but remains in the pulverizer, thereby the crush efficiency when pulverizing alloy is reduced, and also can exert an influence to the variation of the composition before and after pulverizing, size-grade distribution.Therefore, in alloy in the past, the processing that at high temperature homogenizes for a long time as required, thus remove α-Fe.But, because α-Fe exists as peritectoid nuclear, needing long solid phase diffusion in order to remove this α-Fe, thickness is that the ingot casting of several cm and rare earth class content are under the situation 33% below, in fact is impossible removal α-Fe.
In order to solve the problem that in the R-T-B rare earth alloy, generates α-Fe, developed a kind of under speed of cooling faster rapid hardening casting (stripcast) method (being also referred to as the SC method) of casting alloy piece, and this method is used in actual operation.This SC method is a kind of like this method, that is, liquation is flowed on through the cooling roller made of copper after the water-cooled and with the thin slice of its casting into about 0.1～1mm in inside, thereby make the alloy quenching solidify (for example, with reference to patent documentation 1).
Patent documentation 1: No. 3449166 communique of Japanese Patent
In recent years, along with the characteristic raising of magnet, people seek the high performance of R-T-B based rare earth alloy, use the demand of the R-T-B based rare earth alloy of SC method casting to improve constantly.
But in SC method in the past, have following problem: textural at its device, owing to be difficult to upper side is supplied with water coolant in cooling roller inside, the roller upper side on the cooling roller surface of rotation can not be brought into play the cooling performance of regulation.Like this, under the situation that the inhomogeneous cooling on cooling roller surface is spared, especially, because the cooling of the liquation of the upper side position of cooling roller is incomplete, cause the generation of the inhibition α-Fe in the alloy liquation of this part to have the limit, thereby be difficult to realize excellent magnetic properties.And the cooling performance deficiency of cooling roller can make the temperature of cooling roller rise, and might make mechanical component damages such as bearing, thereby can not safety operation.In addition, roller main body made of copper is in high temperature and can causes making its lifetime.
Summary of the invention
The present invention makes in view of above problem, and purpose provides a kind of manufacturing installation of R-T-B based rare earth alloy.This manufacturing installation can improve the cooling efficiency when using rapid hardening casting casting alloy, the temperature of inhibition cooling roller rises, prevents the damage of mechanical component, and can prolong the life-span of roller main body made of copper, realizes stable operation.
Contriver of the present utility model has carried out wholwe-hearted research in order to solve above-mentioned problem.Its result, discovery is in the manufacturing installation of the R-T-B based rare earth alloy that adopts the SC method, water-cooled mechanism for the cooling roller inside that is arranged on casting usefulness, rationalization such as the structure of the feedway by making water coolant, spray regime, can be evenly and make cooling roller cooling expeditiously, thus the cooling efficiency can improve casting the time.Thus, can realize preventing the damage of mechanical component and the long lifetime of roller main body made of copper, can carry out stable operation, and then finish the utility model.That is, the utility model adopts following structure:
(1) a kind of manufacturing installation of R-T-B class rare earth alloy, it comprises the casting station that adopts the rapid hardening casting that the alloy liquation is cast at least, and be used for the broken portion of casting alloy fragmentation after the casting, above-mentioned casting station is at least by the cooling roller that is used to cast above-mentioned casting alloy and be provided with in the mode that can rotate, and tundish (tundish) formation that is used for above-mentioned alloy liquation is supplied to this cooling roller surface, above-mentioned cooling roller is made of with the water-cooled mechanism that is located at this roller body interior the roller main body, above-mentioned water-cooled mechanism is by aqueduct, cup and spray nozzle constitute, above-mentioned aqueduct is with coaxial with above-mentioned roller main body, and the mode of extending to the outside from above-mentioned roller body interior is provided with, be used for water coolant guide-in roller body interior, one of above-mentioned cup distolaterally is connected in above-mentioned aqueduct, in above-mentioned roller body interior, it is distolateral that the inlet end of above-mentioned spray nozzle is connected in another of above-mentioned cup, this spray nozzle extends setting in a tubular form from above-mentioned cup, and be provided with a plurality ofly with being pectination, on this spray nozzle, be formed with the jet hole that a plurality of water coolants that are used for utilizing above-mentioned aqueduct and above-mentioned cup to be directed to above-mentioned roller body interior are injected into above-mentioned roller body inner surface.
Manufacturing installation according to R-T-B based rare earth alloy of the present utility model, in the casting station that adopts the rapid hardening casting that the alloy liquation is cast, for the water-cooled mechanism that is arranged on cooling roller inside, adopt following structure, promptly, this water-cooled mechanism is by aqueduct, cup and spray nozzle constitute, above-mentioned aqueduct is with coaxial with above-mentioned roller main body, and the mode of extending to the outside from above-mentioned roller body interior is provided with, be used for water coolant guide-in roller body interior, one distolateral this aqueduct that is connected in of above-mentioned cup, in the roller body interior, it is distolateral that the inlet end of above-mentioned spray nozzle is connected in another of cup, this spray nozzle extends setting in a tubular form from cup, and be and roughly be provided with to pectination a plurality ofly, on this spray nozzle, be formed with the jet hole that a plurality of water coolants that are used for utilizing aqueduct and cup to be directed to the roller body interior are injected into the roller body inner surface.Make R-T-B based rare earth alloy by the manufacturing installation that adopts this structure, can high-level efficiency and equably cooling roller is cooled off, cooling efficiency improves, thereby can realize preventing the damage of mechanical component and make roller main body long lifetime.Therefore, can carry out stable operation, a kind of manufacturing installation of R-T-B based rare earth alloy of productivity excellence can be provided.
Description of drawings
Fig. 1 is the schematic illustration of manufacturing installation of the R-T-B based rare earth alloy of an embodiment of the present utility model, is the in-built diagrammatic illustration figure of manufacturing installation integral body.
Fig. 2 is the schematic illustration of manufacturing installation of the R-T-B based rare earth alloy of an embodiment of the present utility model, is the diagrammatic illustration figure that is provided with the casting station of cooling roller.
Fig. 3 is the schematic illustration of manufacturing installation of the R-T-B based rare earth alloy of an embodiment of the present utility model, is the stereographic map of the structure of cooling roller.
Fig. 4 is the schematic illustration of manufacturing installation of the R-T-B based rare earth alloy of an embodiment of the present utility model, is arranged on the stereographic map of structure of the water-cooled mechanism of cooling roller inside.
Fig. 5 is the schematic illustration of manufacturing installation of the R-T-B based rare earth alloy of an embodiment of the present utility model, (a) of Fig. 5 is the vertical view that is used to describe in detail the structure of the spray nozzle that is arranged at water-cooled mechanism shown in Figure 4, and (b) of Fig. 5 is the side-view of Fig. 5 (a).
Fig. 6 is the schematic illustration of manufacturing installation of the R-T-B based rare earth alloy of an embodiment of the present utility model, is the vertical view of the structure of water-cooled mechanism integral body.
Fig. 7 is the schematic illustration of manufacturing installation of the R-T-B based rare earth alloy of other embodiment of the present utility model, is the diagrammatic illustration figure of groove that is arranged at the internal surface of cooling roller.
Embodiment
Below, be elaborated with reference to the manufacturing installation of accompanying drawing to the R-T-B based rare earth alloy of having used an embodiment of the present utility model.In addition, in the accompanying drawing of institute's reference, identical components is marked same reference numerals or omits its Reference numeral in the following description.And the accompanying drawing of reference is a synoptic diagram in the following description, and the length and width wherein and the ratio of thickness etc. are variant with the device of reality sometimes.
(R-T-B based rare earth alloy)
The main component of the R-T-B based rare earth alloy that the manufacturing installation (the following manufacturing installation that only slightly is called) 1 of the R-T-B based rare earth alloy of use present embodiment is made is Nd, Fe, B, to this alloy form processing and carry out sintering after, it is magnetized, thereby can access permanent magnet.
Here, the main component of the R in the R-T-B based rare earth alloy is Nd, its part can be replaced with other rare earth element such as Pr, Dy, Tb.
In addition, the T in the R-T-B based rare earth alloy is with other the material of transition metal displacement back gained such as Co, Ni with the part of Fe.Like this, the T in the above-mentioned general formula also comprises except that Fe under the situation of Co, can improve Tc (Curie temperature), and therefore the T in the preferred above-mentioned general formula also comprises Co.
In addition, the B in the R-T-B based rare earth alloy is a boron, its part can be replaced with C or N.
In addition, the composition ratio of the R among general formula R-T-B is 28～33 quality %, and the composition ratio of B is 0.9～1.3 quality %, and in addition, T is a nubbin.
The manufacturing installation of R-T-B based rare earth alloy
Fig. 1 is that the integrally-built master of the manufacturing installation 1 of present embodiment looks schematic illustration, and, Fig. 2 is the diagrammatic illustration figure of structure that constitutes the casting station 2 of manufacturing installation 1, and Fig. 3～Fig. 6 is respectively the further explanatory drawings that is arranged at the water-cooled mechanism 5 in the casting station 2 shown in Figure 2.
In chamber 10, comprise at least and adopt the casting station 2 that the rapid hardening casting casts casting alloy liquation L and be used for broken portion 3, thereby roughly constitute this manufacturing installation 1 the casting alloy M fragmentation after the casting.Casting station 2 is made of cooling roller 4 and tundish 6 at least, this cooling roller 4 can rotate, its water-cooled mechanism 5 that is arranged at the inside of roller main body 41 by utilization makes alloy liquation L quenching cast casting alloy M, and this tundish 6 is used for alloy liquation L is supplied to the surperficial 41a of this cooling roller 4.And, the water-cooled mechanism 5 that is arranged at roller main body 41 inside is by aqueduct 51, cup 57 and spray nozzle 52 constitute, above-mentioned aqueduct 51 is with coaxial with above-mentioned roller main body 41, and the mode of extending to the outside from above-mentioned roller main body 41 inside is provided with, be used for water coolant W guide-in roller main body 41 inside, one end 57a side of above-mentioned cup 57 is connected in this aqueduct 51, in roller main body 41 inside, the inlet end 52c of above-mentioned spray nozzle 52 is connected in the other end 57b side of cup 57, this spray nozzle extends setting in a tubular form from cup 57, and be provided with a plurality ofly with being pectination, on this spray nozzle 52, be formed with the jet hole 52a that a plurality of water coolant W that are used for utilizing aqueduct 51 and cup 57 to be directed to roller main body 41 inside are injected into roller main body 41 internal surface 41b.
In addition, the manufacturing installation 1 of example shown in Fig. 1 also is provided with container 8, its be used for casting alloy M broken portion 3 be broken and casting alloy thin slice N store.
The inside of chamber 10 is made the reduced atmosphere of vacuum or rare gas element and is used, and for example can use argon (Ar) gas as rare gas element.
Casting station
Fig. 2 is arranged on the casting station 2 in the manufacturing installation 1 and the schematic illustration of broken portion 3.
Alloy liquation L prepares in the not shown high-frequency melting furnace that is arranged at chamber 10 outsides.In high-frequency melting furnace, in vacuum or inert gas atmosphere, raw material is dropped into fire-clay crucible 61, utilize the high frequency method of fusion to make the raw material fusing of input, thereby prepare alloy liquation L.The temperature of alloy liquation L is different because of the difference of alloying constituent, and this temperature is adjusted in 1200 ℃～1500 ℃ scopes.As shown in Figure 2, the alloy liquation L for preparing like this is transported to casting station 2 together with fire-clay crucible 61, from fire-clay crucible 61 alloy liquation L is supplied to tundish 6 then.
Tundish 6 will be supplied with the surperficial 41a that the alloy liquation L that comes is supplied to the cooling roller 4 that is rotated action successively from fire-clay crucible 61.This tundish 6 and fire-clay crucible 61 are to be made of resistivity against fire and the high material of thermotolerance equally.
As shown in Figure 3, cooling roller 4 roughly is made of roller main body 41 and the water-cooled mechanism 5 that is arranged at the inside of this roller main body 41.And cooling roller 4 makes the alloy liquation L quenching that is supplied to by the surperficial 41a of water-cooled mechanism 5 cooled roller main bodys 41, thus casting casting alloy M.In addition, cooling roller 4 is provided with along the mode of sense of rotation R rotation being the center with its rotation J.
Roller main body 41 constitutes the roller shape of Figure 1 and Figure 2, is to be the roller component that the center is rotated with rotation J.Though the material as such roller main body 41 is not limited especially the good and consideration of acquisition aspect easily from thermal conductivity, preference such as copper or copper alloy.
In addition, according to the material of roller main body 41, the condition of surface of surperficial 41a, therefore easy adhesion metal is provided with clearing apparatus etc. as required on surperficial 41a, thereby makes the quality of the R-T-B based rare earth alloy of casting and getting more stable.
And the target thickness of casting alloy M is correspondingly controlled the relation between the feed speed of the commentaries on classics (rotation) of cooling roller 4 speed and alloy liquation L, and preferably the rotating speed of cooling roller 4 is in the about 0.5～3m/s scope of circumferential speed.
In addition, the casting alloy M after solidifying on the cooling roller 4 breaks away from from cooling roller 4 at a side position opposite with a side that is provided with tundish 6.
Below, in the manufacturing installation 1 of present embodiment, the water-cooled mechanism 5 of the inside that is arranged at the roller main body 41 that constitutes cooling roller 4 is described in detail.
As the (a) and (b) of Fig. 5 (also with reference to Fig. 3,4 and Fig. 6) shown in, water-cooled mechanism 5 roughly comprises aqueduct 51, is provided with the base station 50 and the spray nozzle 52 of cup 57 in inside.
The aqueduct 51 of present embodiment is the double-sleeve structure that comprises supply-pipe 51B and circulation tube 51A as shown in Figure 6, disposes circulation tube 51A in supply-pipe 51B.Supply with next water coolant W from supply side 56a side inflow supply-pipe 51B from not shown reservoir part.In addition, the other end 56b of supply-pipe 51B is by connecting cup 57 with base station 50.
In addition, the included circulation tube 51A of aqueduct 51 be used in order to reclaim water spraying nozzle 52 and to eject cooled water coolant W, and will use after water coolant W be returned to not shown reservoir part and be provided with, this circulation tube 51A constitutes the water coolant W after using is returned to circulate from the other end 56b and holds the 55a side.As shown in Figure 6, circulation tube 51A is connected with base station 50 by the other end 55b of roller main body 41 inside, and is connected at the return chamber 58 of these base station 50 inside.
As mentioned above, return chamber 58 is located at this cup 57 coaxially with cup 57 in base station 50 inside inboard, be connected in the other end 55b of circulation tube 51A.Return in the chamber 58 at this, a return hole 58a who is used for importing to inside the water coolant W after using is set at least, in illustrated embodiment, overlook to the approximate centre on the base station 50 of circle, promptly on 1 position, be provided with circular return hole 58a with rotation J coaxial line ground.After the internal surface 41b of roller main body 41 sprayed and is trapped in roller main body 41 inside, the water coolant W after the use of returning hole 58a inflow return chamber 58 turned back to the not shown reservoir part from circulation end 55a by circulation tube 51A.
In addition, in the present embodiment, before the water coolant W of self-circulation end 55a after not shown reservoir part is returned use, water coolant W after also may utilizing not shown cooling-part to this use as required cools off again, perhaps makes water coolant W after this use by being used to strainer of removing impurity etc.
Shown in Fig. 4 waited, spray nozzle 52 was the other end 57b sides that are connected in the cup 57 of being located at base station 50 at roller main body 41 inner its inlet end 52c, and extended the member that is provided with in a tubular form from cup 57.In addition, shown in the example as shown, spray nozzle 52 from base station 50 be the other end 57b side of cup 57 be pectination extend be provided with a plurality of.
Be formed with a plurality of jet hole 52a that are used for water coolant W is injected into the internal surface 41b of roller main body 41 on spray nozzle 52, in the example shown in (a) of Fig. 5, a plurality of jet hole 52a are formed on each spray nozzle 52 with forming a line.And, in the present embodiment, supply with the water coolant W that comes from the supply-pipe 51B of aqueduct 51 and be imported in the spray nozzle 52 via cup 57, spray towards the internal surface 41b of roller main body 41 from each jet hole 52a then.
As mentioned above, in manufacturing installation in the past, flow in the top that water coolant is difficult in cooling roller, so the inhomogeneous cooling on cooling roller surface is even, can not bring into play the cooling performance of regulation.
Relative therewith, structure according to water-cooled mechanism 5 such shown in Fig. 4～6 grades, be spray nozzles 52 that pectination is provided with to cooling roller internal surface shower cooling water from a plurality of, thereby water coolant is supplied to the top of cooling roller internal surface equably, can evenly and efficiently cool off cooling roller.Thus, can prevent the damage of mechanical component and make roller main body long lifetime, can carry out stable operation.
In addition, in the spray nozzle 52 of present embodiment, preferred jet hole 52a towards the angle of inclination that is become with medullary ray T, be that the spray angle θ of water coolant W is the angle that tilts to sense of rotation R, above-mentioned medullary ray T spinning axis J extends via the internal surface 41b of center in the pipe of spray nozzle 52 towards roller main body 41.In addition, the spray angle θ left-hand tools direction R towards being constructed such that water coolant W that is more preferably jet hole 52a tilts in 40 °～80 ° the scope, in example shown in Figure 5, jet hole 52a towards, promptly spray angle θ is about 60 °.
Shown in Fig. 5 (b), the medullary ray T angulation towards extending to the internal surface 41b (with reference to Fig. 3) of roller main body 41 with spinning axis J of jet hole 52a be the angle of inclination (spray angle θ) to 40 °～80 ° of sense of rotation R inclinations, thus, the water coolant W that ejects of blowing perforation 52a also correspondingly changes with spray angle θ with respect to the spray angle of internal surface 41b.
The spray angle that water coolant W is become with the internal surface 41b of roller main body 41 also can be for approximate right angle (spray angle θ=0 °), even such angle also can obtain above-mentioned effect of the present utility model fully.But, contriver of the present utility model is through attentively discovering, shown in Fig. 5 (b), injection direction by making water coolant W is oblique towards the sense of rotation R inclination of roller main body 41, when casting R-T-B based rare earth alloy, the cooling performance of the surperficial 41a of roller main body 41 becomes more even, and cooling efficiency improves.
Generally speaking, in the manufacturing installation that uses the SC method, under the situation of the cooling roller of the structure of employing shower cooling water, form the boundary film of water vapour sometimes at the roller internal surface, thereby cause the property cooled off reduction.
In the present embodiment, as above-mentioned structure, make the jet hole 52a that is located on the spray nozzle 52 towards suitableization, and the spray angle θ of water coolant W is controlled at above-mentioned direction, thereby, even form the boundary film of water vapour at internal surface 41b, also the hydraulic pressure of the water coolant W that can eject by water spraying nozzle 52 is removed boundary film.Thus, can obtain the cooling performance of the surperficial 41a of roller main body 41 more equably, cooling efficiency further improves.Therefore, can prevent the damage of mechanical component and make roller main body long lifetime, can carry out stable operation.
In addition, in the present embodiment, in the spray nozzle 52 of as shown in Figure 5 formation, omit detailed diagram, but the diameter of connection section of the other end 57b side that more preferably is connected in cup 57 is bigger than the diameter of the leading section of spray nozzle 52.Specifically, more preferably the diameter ratio of the diameter of connection section and leading section is the scope of (diameter of connection section)/(diameter of leading section)=1.05～1.45.
Generally speaking, under the situation of the nozzle of use uniform diameter, the existence front end extension water yield to nozzle more is not enough more, equably the problem of shower cooling water.
In the present embodiment, as mentioned above, the diameter of the connection section of employing spray nozzle 52 is greater than the structure of the diameter of leading section, thereby the water coolant W that is imported into spray nozzle 52 from cup 57 is along with rising towards mobile its hydraulic pressure of leading section and flow velocity from connection section.Thus, can carry water coolant W to arrive the leading section of spray nozzle 52 equably until this water coolant W, thereby no matter in spray nozzle 52 which position, blowing perforation 52a shower cooling water W equably.In addition, because hydraulic pressure and the flow velocity of the water coolant W that ejects of blowing perforation 52a also improve, thereby the cooling performance of the internal surface 41b of pair roller main body 41 also improves.Therefore, can obtain the cooling performance of the internal surface 41a of roller main body 41 equably, cooling performance further improves.
In addition, if the diameter ratio of the diameter of the connection section of spray nozzle 52 and leading section then can further obtain above-mentioned effect significantly in above-mentioned scope.
In the present embodiment, the aqueduct 51 of coaxial setting and roller main body 41 identical sense of rotation, be on the sense of rotation R shown in Figure 3 towards the equidirectional rotation, preferred water-cooled mechanism 5 rotates towards equidirectional with roller main body 41.
Generally speaking, under the situation of the internal surface shower cooling water of cooling roller, can the bottom in cooling roller accumulate the water coolant after the use.In the present embodiment, be set at equidirectional by sense of rotation with water-cooled mechanism 5 and roller main body 41, make the above-mentioned water coolant W that lodges in the inside of cooling roller 4 like that be stirred, thereby can reduce partial water coolant boiling, reduce the non-uniform temperature of water coolant etc.Thus, with above-mentioned same, can obtain the cooling performance of the internal surface 41a of roller main body 41 more equably, cooling efficiency further improves, and can prevent the damage of mechanical component and make roller main body long lifetime, thereby can carry out stable operation.
In addition, in the present embodiment, example as shown in Figure 7 more preferably adopts the structure that is formed with slot part 42c on the internal surface 42b of roller main body 42.
The roller inner surface side that is applied to the cooling roller in the general manufacturing installation forms tabular surface, and therefore, especially smaller situation is inferior in roller footpath may cause the cooling power deficiency because of the surface-area deficiency.In the present embodiment, on internal surface 42b, be formed with slot part 42c such concavo-convex, the structure that rises and falls, increased the surface-area of internal surface 42b in fact by adopting.Thus, by water coolant W being injected into the cooling performance that internal surface 42b can further improve roller main body 42.Therefore, can prevent the damage of mechanical component and make roller main body long lifetime, thereby can carry out stable operation.
In addition, consider that from more stably obtaining above-mentioned effect aspect the degree of depth of the slot part 42c in the preferred example shown in Figure 7 is in 0.2～1mm scope.And, in illustrative example,, be not limited thereto though slot part 42c forms concavity, for example also can form leg-of-mutton slot part.
Fragmentation portion
As ground as illustrated in Fig. 1 and Fig. 2, in the present embodiment, the casting alloy M that is cast by the cooling roller 4 that is arranged in the casting station 2 portion 3 that is broken is broken into casting alloy thin slice N.
Shown in example among the figure, broken portion 3 is made of a pair of breaker roll 31,31, casting alloy M is clipped between the breaker roll 31,31 of two rotations, cuts apart and is processed to casting alloy thin slice N thereby casting alloy M is broken.Then, in example shown in Figure 1, the casting alloy thin slice N after fragmentation is cut apart falls downwards, and is transferred out by container 8.
Container
As shown in Figure 1, can comprise container 8 in the present embodiment, this container 8 can be deposited casting alloy thin slice N.
The various metallic substance that the material of container 8 can adopt for example stainless steel, iron, the anti-corrosion Langaloy of haas troy (hastelloy), Inco nickel refractory alloy (inconel) etc. at high temperature to use.
In addition, in the manufacturing installation 1 of illustrative example, be provided with and be used to travelling belt 9 that container 8 can be moved, with container 8 mountings on travelling belt 9, thereby container 8 can move along left and right directions in Fig. 1.
In addition, in chamber 10, be provided with door (gate) 11,, by this door 11 chamber 10 sealed under all the other situations except container 8 being delivered to the device outside, being the situation of outside of chamber 10.
The action of the manufacturing installation of R-T-B based rare earth alloy
Below, the action of the manufacturing installation 1 when 1 pair of the manufacturing installation of use present embodiment is made R-T-B based rare earth alloy describes.
At first, preparation alloy liquation L in not shown smelting apparatus.Though the temperature of alloy liquation L according to alloying constituent and different, is adjusted at 1300 ℃～1500 ℃ scope with it.Then, the alloy liquation L for preparing is transported to casting station 2 together with each fire-clay crucible 61, from fire-clay crucible 61 alloy liquation L is supplied to tundish 6.
Next, alloy liquation L is supplied to cooling roller 4 and alloy liquation L is solidified, become casting alloy M from tundish 6.Subsequently, with the position of the opposite side of supply side of alloy liquation L casting alloy M is broken away from from cooling roller 4.And, casting alloy M is clipped between the breaker roll 31,31 of two rotations and makes its fragmentation, become casting alloy thin slice N.
In addition, the average cooling rate of preferred alloy liquation L on cooling roller 4 is 500～2000 ℃ of per seconds.Average cooling rate is that speed of cooling is enough under the situation of per second more than 500 ℃, can prevent separating out and thickization of the tissue that rich R equates of α-Fe.In addition, condensate depression can be not excessive under the situation of per second below 2000 ℃ for the average cooling rate of alloy liquation L, can prevent to generate micro organization.
The casting alloy thin slice N of roller 31 fragmentations of being broken is housed in the container 8.Then, open the door 11 of chamber 10 and container 8 is delivered to the outside, casting alloy thin slice N is removed, and makes and finishes.
As mentioned above, adopt the manufacturing installation of R-T-B based rare earth alloy of the present utility model, in the casting station 2 that utilizes the rapid hardening casting that alloy liquation L is cast, the water-cooled mechanism 5 that is located at cooling roller 4 inside adopts following structure: this water-cooled mechanism 5 is by aqueduct 51, cup 57 and spray nozzle 52 constitute, above-mentioned aqueduct 51 is with coaxial with roller main body 41, and the mode of extending to the outside from roller main body 41 inside is provided with, be used for water coolant W guide-in roller main body 41 inside, one end 57a side of above-mentioned cup 57 is connected in this aqueduct 51, in roller main body 41 inside, the inlet end 52c of above-mentioned spray nozzle 52 is connected in the other end 57b side of cup 57, this spray nozzle extends setting in a tubular form from cup 57, and be provided with a plurality ofly with being pectination, on this spray nozzle 52, be formed with the jet hole 52a that a plurality of water coolant W that are used for utilizing aqueduct 51 and cup 57 to be directed to roller main body 41 inside are injected into roller main body 41 internal surface 41b.Make R-T-B based rare earth alloy by the manufacturing installation 1 that uses this structure, can high-level efficiency and cool off equably, cooling efficiency improves, and thus, can prevent the damage of mechanical component and make roller main body long lifetime, can carry out stable operation.
In addition, technical scope of the present utility model is not defined as present embodiment, can carry out various changes in the scope that does not break away from purport of the present utility model.
In addition, manufacturing installation of the present utility model not only can be used to make R-T-B based rare earth alloy, also can be applied to make thermoelectric semiconductor alloy, hydrogen-storage alloy.
As thermoelectric semiconductor alloy, can example illustrate and use general formula A
3-xB
xThe alloy of C (wherein, A and B are at least a in the transition metal of Fe, Co, Ni, Ti, V, Cr, Zr, Hf, Nb, Mo, Ta, W etc., and C is at least a among 13 families such as Al, Ga, In, Si, Ge, Sn or the 14 family's elements) expression.
In addition, also can example illustrate (wherein with general formula ABC, A and B are at least a in the transition metal of Fe, Co, Ni, Ti, V, Cr, Zr, Hf, Nb, Mo, Ta, W etc., and C is at least a among 13 families such as Al, Ga, In, Si, Ge, Sn or the 14 family's elements) alloy of expression.
And, also can example illustrate and use general formula R E
x(Fe
1-yM
y)
4Sb
12(RE is at least a among La, the Ce, and M is at least a for what select from the group who is made of Ti, Zr, Sn, Pb.0＜x≤1,0＜y＜1) expression rare earth alloy.
And, also can example illustrate and use general formula R E
x(Co
1-yM
y)
4Sb
12(RE is at least a among La, the Ce, and M is at least a for what select from the group who is made of Ti, Zr, Sn, Cu, Zn, Mn, Pb.0＜x≤1,0＜y＜1) expression rare earth alloy.
In addition, as hydrogen-storage alloy, can AB be shown example
2Type alloy (alloy with transition element such as titanium, manganese, zirconium, nickel is basic formed alloy) or AB
5Type alloy (comprising with respect to rare earth element, niobium, zirconium is 1 part, and the transition element (nickel, cobalt, aluminium etc.) with katalysis is that 5 parts alloy is basic formed alloy) etc.
Claims (1)
1. the manufacturing installation of a R-T-B based rare earth alloy is characterized in that, this manufacturing installation comprises at least:
Casting station, it adopts the rapid hardening casting that the alloy liquation is cast;
Fragmentation portion, it is used for the casting alloy fragmentation after the casting,
Above-mentioned casting station is at least by the cooling roller that is used to cast above-mentioned casting alloy and is provided with in the mode that can rotate and be used for the tundish that above-mentioned alloy liquation is supplied to this cooling roller surface is constituted,
Above-mentioned cooling roller is made of with the water-cooled mechanism that is located at this cooling roller body interior the cooling roller main body,
Above-mentioned water-cooled mechanism is by constituting with the lower section:
Aqueduct, it is provided with in mode coaxial with above-mentioned roller main body and that extend to the outside from above-mentioned roller body interior, is used for water coolant guide-in roller body interior;
Cup, one is distolateral to be connected in above-mentioned aqueduct;
Spray nozzle, in above-mentioned roller body interior, it is distolateral that the inlet end of this spray nozzle is connected in another of above-mentioned cup, this spray nozzle extends setting in a tubular form from above-mentioned cup, and be provided with a plurality ofly with being pectination, on this spray nozzle, be formed with the jet hole that a plurality of water coolants that are used for utilizing above-mentioned aqueduct and above-mentioned cup to be directed to above-mentioned roller body interior are injected into above-mentioned roller body inner surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206982523U CN201942735U (en) | 2010-12-28 | 2010-12-28 | Manufacturing device for R-T-B series rare earth type alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206982523U CN201942735U (en) | 2010-12-28 | 2010-12-28 | Manufacturing device for R-T-B series rare earth type alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201942735U true CN201942735U (en) | 2011-08-24 |
Family
ID=44470082
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206982523U Expired - Lifetime CN201942735U (en) | 2010-12-28 | 2010-12-28 | Manufacturing device for R-T-B series rare earth type alloys |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201942735U (en) |
-
2010
- 2010-12-28 CN CN2010206982523U patent/CN201942735U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Baotou Showa rare earth hi tech new material Co Ltd Assignor: Showa Denko K. K. Contract record no.: 2012990000431 Denomination of utility model: Manufacturing device for R-T-B series rare-earth alloy Granted publication date: 20110824 License type: Exclusive License Record date: 20120619 |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20190604 Address after: Tokyo, Japan Patentee after: TDK Corp. Address before: Tokyo, Japan, Japan Patentee before: Showa Denko K. K. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |
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| CX01 | Expiry of patent term |