CN102528064A - Equipment and technology for preparing metal powder - Google Patents
Equipment and technology for preparing metal powder Download PDFInfo
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- CN102528064A CN102528064A CN2012100447228A CN201210044722A CN102528064A CN 102528064 A CN102528064 A CN 102528064A CN 2012100447228 A CN2012100447228 A CN 2012100447228A CN 201210044722 A CN201210044722 A CN 201210044722A CN 102528064 A CN102528064 A CN 102528064A
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Abstract
The invention provides equipment and technology for preparing metal powder, which are used for atomizing a raw material rod into metal powder. The equipment for preparing metal powder comprises a driving mechanism for driving the raw material rod to rotate, wherein the driving mechanism comprises a motor of the driving mechanism, a driving roll of the driving mechanism and a driven roll of the driving mechanism; the driving roll of the driving mechanism is connected to the motor of the driving mechanism; the driven roll of the driving mechanism is used for pressing the raw material rod; a clamping space for clamping the raw material rod is arranged between the driving roll of the driving mechanism and the driven roll of the driving mechanism; the driving roll of the driving mechanism and the driven roll of the driving mechanism clamp the raw material rod to rotate; and the diameter of the driving roll of the driving mechanism is more than 2 times that of the raw material rod. According to the technology, the driving roll of the driving mechanism and the driven roll of the driving mechanism clamp the raw material rods to rotate so that the rotating speed of the raw material rod is higher than 30 thousand turns/minute. The equipment can be used for preparing powder of which the particle size is below 1mm, and the yield of the fine powder with particle size below 50mu m is very high.
Description
Technical field
The present invention relates to field of metallurgy, belong to a kind of equipment and technology of producing metal dust, utilize equipment that the plasma atomization process produces metal dust and utilize the plasma atomization process to produce the technology of metal dust in particular to a kind of.
Background technology
Refining metallic powder can adopt argon gas powder by atomization method, nitrogen atomization powder process method and water atomization, plasma atomizing to produce metal dust.At present, adopted the plasma atomization process to produce metal dust.The plasma atomization process is with the plasma gun that is arranged in the spray chamber raw metal rod that extend in the spray chamber to be acted on; The raw metal rod rotates in the spray chamber high speed through the drive of driving mechanism (mainly being motor); Produce centrifugal phenomenon, under the heat fusing effect of plasma gun, be atomized into metal dust.
Existing processes is produced refining metallic powder, fuel rod under the drive of driving mechanism, general rotating speed below per minute 1.5 ten thousand changes or about (ultra only 1.55 ten thousand commentaries on classics); The powder size narrow range that obtains under other rotating speed of this grade; Usually can only atomize and produce the powder of 50um to 180um, be difficult to produce the powder below the 50um, and powder size be thick; Even can access the powder below the 50um; Output also just accounts for a few percent of the powder powder after the atomizing, can not obtain stable and production scale, and production efficiency is lower.
In addition, as depicted in figs. 1 and 2, the structure of existing hopper 130 is following: be provided with the gripper shoe 132 that many rows tilt in the hopper 130; Gripper shoe 132 supports fuel rod 50, and fuel rod 50 is arranged on the gripper shoe 132, also establishes leading screw 131 on the hopper 130; Leading screw 131 is provided with connecting plate 133, and connecting plate 133 holds undermost gripper shoe 132, and leading screw 131 drives connecting plate 133 and moves up and down; Thereby make gripper shoe 132 move up and down, when gripper shoe 132 whenever moves down a row, just have row's fuel rod 50 to discharge from the discharging opening of hopper 130; Roll along the transfer passage that tilts 137, send in the pay-off, then through pusher dog 135; Pay-off is sent to fuel rod 50 in the driving mechanism, and the driving mechanism clamping also drives fuel rod 50 and rotates in the spray chamber high speed.In this process,, can cause every row's fuel rod 50 can focus on pusher dog 135 places simultaneously like this because fuel rod 50 is several rows of come out; Make that the fuel rod 50 before the pusher dog 135 is crooked easily; Cause material loading to stop up, influence the material of dialling of pusher dog 135, influence the without interruption of fuel rod 50.
Also have, the driving mechanism clamping also drives fuel rod 50 in the rotation of spray chamber high speed, and fuel rod 50 every atomizings once; The driving mechanism next fuel rod 50 of clamping again that just need stop restarts, at a high speed rotation then; Atomize, like this, the atomizing of adjacent two fuel rods 50 just needs that driving mechanism stops, clamping again, restarting; Influence speed of production, and driving mechanism stops to rotate to high speed the wearing and tearing of the repeatedly past acceleration driving mechanism of resuming a session again from rotating at a high speed; Reduce to quicken the service life of driving mechanism, increase the maintenance and the cost of exchange device more.In addition; Because the process of driving mechanism acquisition fuel rod is discontinuous, the length of fuel rod is about 700mm, and the remaining stub bar of fuel rod (from plasma gun fuel rod one end far away) nearly 150 is to 170mm; The remaining stub bar of fuel rod can not atomize and be powder, and raw material availability is low.
Summary of the invention
The present invention provides a kind of equipment and technology of producing metal dust, produces the inefficient problem of metal dust below the 50um to solve prior art.In addition, the present invention also will solve the low problem of prior art raw material availability, because the problem that influences raw material supply of the crooked generation during the raw material discharging and when the driving mechanism feed, and driving mechanism needs the problem of reduction of speed.
For this reason; The present invention proposes a kind of equipment of producing metal dust; Be used for fuel rod is atomized into metal dust; The said equipment of producing metal dust comprises: be used to drive the driving mechanism that fuel rod rotates, said driving mechanism comprises: the motor of driving mechanism, the driven voller that is connected the drive roll of the driving mechanism on the motor of driving mechanism and is used to compress the driving mechanism of said fuel rod; The grasping part that has the said fuel rod of clamping between the drive roll of said driving mechanism and the driven voller of driving mechanism; The driven voller clamping of the drive roll of said driving mechanism and driving mechanism said fuel rod and is rotated, and the diameter of the drive roll of said driving mechanism is more than 2 times of diameter of said fuel rod.
Further; The drive roll of said driving mechanism and the driven voller of driving mechanism are two; The drive roll of two said driving mechanisms is horizontally disposed with side by side; The driven voller of two said driving mechanisms is horizontally disposed with side by side, and the drive roll of top or said driving mechanism that the drive roll of said driving mechanism is positioned at the driven voller of driving mechanism is positioned at the below of the driven voller of driving mechanism, and the diameter of the drive roll of said driving mechanism is more than 3.5 times of diameter of said fuel rod.
Further; The drive roll of said driving mechanism and the driven voller of driving mechanism are two; The line in the axle center of the driven voller of the line in the axle center of the drive roll of two said driving mechanisms and two said driving mechanisms forms crossing diagonal, and the diameter of the drive roll of said driving mechanism is more than 3.5 times of diameter of said fuel rod.
Further; The said equipment of producing metal dust also comprises: be positioned at the speed change feed mechanism at the said driving mechanism upper reaches, said speed change feed mechanism comprises: the motor of speed change feed mechanism, the driven voller that is connected the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and is used to compress the speed change feed mechanism of said fuel rod; The grasping part that has the said fuel rod of clamping between the driven voller of the drive roll of said speed change feed mechanism and speed change feed mechanism; The driven voller clamping of the drive roll of said speed change feed mechanism and speed change feed mechanism said fuel rod and is rotated; The drive roll of said driving mechanism is identical with the diameter of the drive roll of said speed change feed mechanism; The driven voller of said driving mechanism is identical with the diameter of the driven voller of said speed change feed mechanism; The upper-lower position relation of the drive roll of said speed change feed mechanism and the driven voller of speed change feed mechanism is identical with the upper-lower position relation of the driven voller of the drive roll of said driving mechanism and driving mechanism; The drive roll of said speed change feed mechanism and the coaxial setting of the drive roll of said driving mechanism, the motor of said speed change feed mechanism is identical with the rotating speed of motor scope of driving mechanism.
Further; The said equipment of producing metal dust also comprises: the hopper that stores said fuel rod; Said hopper comprises: sidewall and the gripper shoe that is arranged on the said fuel rod of a plurality of supports in the said sidewall; The extended line of adjacent two gripper shoes intersects, and adjacent two gripper shoes allow the said fuel rod breach that gripper shoe moves to lower floor's gripper shoe from the upper strata near locating to form each other two gripper shoes, and the bottom of said hopper has the discharging opening that said fuel rod is discharged.
Further, the driven voller equal diameters of the drive roll of said driving mechanism and driving mechanism is connected in the said fuel rod between the driven voller of drive roll and two driving mechanisms of two driving mechanisms.
The present invention also proposes a kind of technology of utilizing the plasma atomization process to produce metal dust; Be used for fuel rod is atomized into metal dust; Said process using driving mechanism drives fuel rod and rotates, and said driving mechanism comprises: the motor of driving mechanism, the driven voller that is connected the drive roll of the driving mechanism on the motor of driving mechanism and is used to compress the driving mechanism of said fuel rod; The diameter of the drive roll of said driving mechanism is more than 2 times of diameter of said fuel rod, and the driven voller clamping of drive roll and the driving mechanism of said technology through said driving mechanism said fuel rod and rotated and make the rotating speed of said fuel rod reach more than per minute 30,000 changes.
Further; The diameter of the drive roll of said driving mechanism is more than 3.5 times of diameter of said fuel rod; The driven voller clamping of drive roll and the driving mechanism of said technology through said driving mechanism said fuel rod and is rotated and make the rotating speed of said fuel rod reach more than per minute 50,000 changes; Said technology through the speed change feed mechanism to the driving mechanism rod that supplies raw material; At the speed change feed mechanism in driving mechanism supplies raw material rod motion; Said driving mechanism keeps the machine operation rotating speed constant, and said speed change feed mechanism is with clamping speed clamping fuel rod, and the speed change feed mechanism accelerates to fuel rod from clamping speed and reaches the fuel rod of the working speed of fuel rod to driving mechanism supply clamping then.
Further, said speed change feed mechanism comprises: the motor of speed change feed mechanism, the driven voller that is connected the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and is used to compress the speed change feed mechanism of said fuel rod; Said speed change feed mechanism is when driving mechanism supplies raw material rod; Said driving mechanism keeps the machine operation rotating speed constant; Make the motor of said speed change feed mechanism reach clamping speed; Between the driven voller with the drive roll that fuel rod pushed to again said speed change feed mechanism and said speed change feed mechanism; Make said speed change feed mechanism grasp fuel rod, the motor of said then speed change feed mechanism quickens to make fuel rod reach the working speed of fuel rod, again the fuel rod under the working speed state is pushed to said driving mechanism from said speed change feed mechanism.
Further, said fuel rod is stored in the hopper, and one one of said fuel rod is discharged from said hopper.
The proportioning of diameter of diameter and the said fuel rod of said fuel rod rotation and the drive roll through said driving mechanism in the driven voller clamping of the drive roll of the present invention through driving mechanism and driving mechanism; Make the rotating speed of said fuel rod reach more than per minute 30,000 commentaries on classics, solved prior art because the problem at the bottom of the metal dust recovery rate below the low 50um that causes of fuel rod rotating speed.
And then the present invention discharges one one of said fuel rod from said hopper, prior art can not take place owing to fuel rod is discharged the crooked phenomenon of fuel rod cause by rows from said hopper, makes the feed steady and continuous.
And then the present invention to the driving mechanism rod that supplies raw material, makes said driving mechanism keep the machine operation rotating speed constant through the speed change feed mechanism; Said speed change feed mechanism is with clamping speed (low speed) clamping fuel rod, and the speed change feed mechanism accelerates to fuel rod from clamping speed and reaches the fuel rod of the working speed of fuel rod to driving mechanism supply clamping then, like this; Make said driving mechanism total energy keep working speed, make the fuel rod of said driving mechanism clamping to enter into driving mechanism, avoided driving mechanism from stopping, being clamped to again the process of restarting with working speed; The continuity that has kept atomizing work; Improve the utilization rate of plasma gun, improved production efficiency, reduced the wearing and tearing of driving mechanism; Increase the service life of quickening driving mechanism, reduced the maintenance and the cost of exchange device more.And the present invention be rotation at a high speed with continuously in the material tail problem that atomizes and produce metal dust, do not have every material, the remaining stub bar of fuel rod also can fully atomize and be powder, raw material availability significantly improves.
Description of drawings
Fig. 1 shows the structure of existing hopper from main apparent direction;
Fig. 2 shows the structure of existing hopper from the side-looking direction;
Fig. 3 shows the overall structure sketch map according to the equipment of producing metal dust of the embodiment of the invention from main apparent direction;
Fig. 4 shows the overall structure sketch map according to the equipment of producing metal dust of the embodiment of the invention from overlooking direction;
Fig. 5 shows the structure according to the hopper of the embodiment of the invention from main apparent direction;
Fig. 6 shows first kind of structure according to the driving mechanism of the embodiment of the invention, and wherein, the drive roll of driving mechanism is positioned at the top of the driven voller of driving mechanism;
Fig. 7 shows second kind of structure according to the driving mechanism of the embodiment of the invention, and wherein, the drive roll of driving mechanism is positioned at the below of the driven voller of driving mechanism;
Fig. 8 shows the third structure according to the driving mechanism of the embodiment of the invention, and wherein, the line in the axle center of the driven voller of the line in the axle center of the drive roll of two driving mechanisms and two driving mechanisms forms crossing diagonal.
The drawing reference numeral explanation:
10, spray chamber 11, plasma gun 21, driving mechanism 22, speed change feed mechanism
30, hopper 40, material-pulling device 50, fuel rod 51, fuel rod
52, fuel rod 53, fuel rod
211, the drive roll 213 of driving mechanism, the driven voller of driving mechanism
130, hopper 131, leading screw 131 132, gripper shoe 133, connecting plate 135, pusher dog
137, transfer passage
31, sidewall 32, gripper shoe 35, pusher dog 36, breach 38, discharging opening
The specific embodiment
To understand in order technical characterictic of the present invention, purpose and effect being had more clearly, to contrast the description of drawings specific embodiment of the present invention at present.
Like Fig. 3 and shown in Figure 4; The present invention proposes a kind of equipment of producing metal dust; Be used for fuel rod 50 is atomized into metal dust; The present invention carries and adopts 11 pairs of plasma guns that are arranged in the spray chamber 10 to extend into raw metal rod 50 effects of the high speed rotation in the spray chamber; The said equipment of producing metal dust comprises: be used to drive the driving mechanism 21 that first fuel rod 50 rotates, to shown in Figure 8, said driving mechanism 21 comprises like Fig. 6: the motor (not shown) of driving mechanism, the driven voller 213 that is connected the drive roll 211 of the driving mechanism on the machine shaft of driving mechanism and is used to compress the driving mechanism of said fuel rod; The grasping part that has the said fuel rod 50 of clamping between the drive roll 211 of said driving mechanism and the driven voller 213 of driving mechanism; The drive roll 211 of said driving mechanism and driven voller 213 clampings of driving mechanism said fuel rod 50 and are rotated; The driven voller 213 of driving mechanism compresses fuel rod 50 on the one hand; One side is with drive roll 211 co-rotation of driving mechanism; After thereby the drive roll 211 that forms driving mechanism rotated, the drive roll 211 of said driving mechanism and driven voller 213 clampings of driving mechanism said fuel rod 50 and are rotated, and the diameter of the drive roll 211 of said driving mechanism is more than 2 times of diameter of said fuel rod 50.The driven voller 213 of driving mechanism can compress or unclamp fuel rod 50 through hold-down mechanism, is not the emphasis that the present invention discusses about the concrete structure of hold-down mechanism, and it can adopt the various suitable methods of prior art.
The motor of driving mechanism of the present invention is adopting (for example being that per minute 1.5 ten thousand changes) under the existing rotating speed of motor; The rotating speed of the drive roll 211 of driving mechanism also is that per minute 1.5 ten thousand changes; The ratio of diameter and the diameter of fuel rod 50 of setting the drive roll 211 of driving mechanism is n, then can be so that be clamped in n times of rotating speed of motor that the rotating speed of drive roll 211 and the fuel rod 50 between the driving mechanism of said driving mechanism is a driving mechanism.If the diameter that makes the drive roll 211 of driving mechanism is more than 2 times of diameter of said fuel rod 50, then can produce the following powder of 50um of higher proportion so that the rotating speed of fuel rod 50 is more than 30,000 commentaries on classics.Further; The diameter of the drive roll of said driving mechanism is more than 3.5 times of diameter of said fuel rod; The driven voller clamping of drive roll and the driving mechanism of said technology through said driving mechanism said fuel rod rotate make the rotating speed of said fuel rod reach that per minute 50,000 changes or more than; Like this, can produce the following powder of more a high proportion of 50um.In addition, can also pass through motor frequency conversion, the rotating speed of fuel rod 50 not only can be reached more than 30,000 commentaries on classics; Can also reach below 10,000 commentaries on classics, or below 5,000 commentaries on classics, even below 3,000 commentaries on classics; Below 2,000 commentaries on classics; Like this, the powder that the present invention can not only produce below the 50um can also be produced the powder below the above 1mm of 180um, can enlarge the powder size scope of product.
The proportioning of diameter of diameter and the said fuel rod of said fuel rod rotation and the drive roll through said driving mechanism in the driven voller clamping of the drive roll of the present invention through driving mechanism and driving mechanism; Solved the low problem of fuel rod rotating speed of prior art; And need not to be provided with reduction box, reduced the occupation of land and the cost of equipment.In addition, even also having solved, the present invention adopt reduction box can not effectively improve the problem of fuel rod rotating speed.
About the driven voller of the drive roll of said driving mechanism and driving mechanism method of clamping to fuel rod, can adopt a drive roll and a plurality of driven voller with the fuel rod clamping, also can adopt a plurality of drive rolls and a plurality of driven voller with the fuel rod clamping.Further; To shown in Figure 7, the drive roll 211 of said driving mechanism and the driven voller 213 of driving mechanism are two like Fig. 6, and the drive roll 211 of two said driving mechanisms is horizontally disposed with side by side; The driven voller 213 of two said driving mechanisms is horizontally disposed with side by side; As shown in Figure 6, the drive roll 211 of said driving mechanism is positioned at the top of the driven voller of driving mechanism, and is as shown in Figure 7; The drive roll 211 of said driving mechanism is positioned at the below of the driven voller 213 of driving mechanism; The diameter of the drive roll of said driving mechanism is more than 3.5 times of diameter of said fuel rod, and the driven voller of drive roll and driving mechanism that can both realize driving mechanism like this is to the clamping of fuel rod, makes the rotating speed of said fuel rod reach more than per minute 50,000 changes.
Further; As shown in Figure 8; The drive roll 211 of said driving mechanism and the driven voller 213 of driving mechanism are two; The line in the axle center of the line in the axle center of the drive roll 211 of two said driving mechanisms and the driven voller 213 of two said driving mechanisms forms crossing diagonal; The diameter of the drive roll 211 of said driving mechanism is more than 3.5 times of diameter of said fuel rod, and the driven voller of drive roll and driving mechanism that so also can realize driving mechanism is to the clamping of fuel rod, makes the rotating speed of said fuel rod reach more than per minute 50,000 changes.
The driven voller of drive roll and driving mechanism that can both realize driving mechanism from Fig. 6 to the structure of stating driving mechanism shown in Figure 8 is to the clamping of fuel rod, and above-mentioned various method of clamping can be selected as required flexibly.The drive roll 211 of wherein said driving mechanism and driven voller 213 diameters of driving mechanism can equate also can not wait.
Further; Extremely shown in Figure 8 like Fig. 6; The drive roll 211 of said driving mechanism and driven voller 213 equal diameters of driving mechanism; Be connected in the fuel rod 51 between the driven voller 213 of drive roll 211 and two driving mechanisms of two driving mechanisms, like this, the drive roll of driving mechanism and the driven voller of driving mechanism are more stable to the clamping of fuel rod.
Further; Extremely shown in Figure 4 like Fig. 3; The said equipment of producing metal dust also comprises: the speed change feed mechanism 22 that is positioned at the said driving mechanism upper reaches; The structure of said speed change feed mechanism 22 is identical or similar with the structure of driving mechanism 22, and therefore, each part in the speed change feed mechanism 22 no longer indicates.Said speed change feed mechanism 22 can comprise: the motor of speed change feed mechanism, the driven voller that is connected the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and is used to compress the speed change feed mechanism of said fuel rod; The grasping part that has the said fuel rod of clamping between the driven voller of the drive roll of said speed change feed mechanism and speed change feed mechanism; The driven voller clamping of the drive roll of said speed change feed mechanism and speed change feed mechanism said fuel rod and is rotated; The drive roll of said driving mechanism is identical with the diameter of the drive roll of said speed change feed mechanism; The driven voller of said driving mechanism is identical with the diameter of the driven voller of said speed change feed mechanism; The upper-lower position relation of the drive roll of said speed change feed mechanism and the driven voller of speed change feed mechanism is identical with the upper-lower position relation of the driven voller of the drive roll of said driving mechanism and driving mechanism; The drive roll of said speed change feed mechanism and the coaxial setting of the drive roll of said driving mechanism, the motor of said speed change feed mechanism is identical with the rotating speed of motor scope of driving mechanism.
Adopt the speed change feed mechanism to the driving mechanism rod that supplies raw material, make said driving mechanism keep the machine operation rotating speed constant, said speed change feed mechanism is with clamping speed (low speed) clamping fuel rod; The speed change feed mechanism accelerates to working speed that fuel rod the reaches fuel rod fuel rod to driving mechanism supply clamping from clamping speed then, like this, makes said driving mechanism total energy keep working speed; Make the fuel rod of said driving mechanism clamping to enter into driving mechanism with working speed; Avoid driving mechanism from stopping, being clamped to the process of restarting again, kept the continuity of atomizing work, improved the utilization rate of plasma gun; Improved production efficiency; Reduce the wearing and tearing of driving mechanism, increased the service life of quickening driving mechanism, reduced the maintenance and the cost of exchange device more.
Adopt the speed change feed mechanism to the driving mechanism rod that supplies raw material; Purpose and effect are in order to guarantee that driving mechanism keeps the machine operation rotating speed constant; That guarantee to produce carries out continuously, therefore, through with Fig. 6 to Fig. 8 in the identical speed change feed mechanism of driving mechanism; Just can so that: at the speed change feed mechanism in driving mechanism supplies raw material rod motion; Said driving mechanism keeps the machine operation rotating speed constant, and said speed change feed mechanism is with clamping speed clamping fuel rod, and the speed change feed mechanism accelerates to fuel rod from clamping speed and reaches the fuel rod of the working speed of fuel rod to driving mechanism supply clamping then.
For example; Like Fig. 3 and shown in Figure 4, the working speed of the motor of driving mechanism is 1.5 ten thousand commentaries on classics or above per minutes, and said speed change feed mechanism is when driving mechanism supplies raw material rod; Said driving mechanism keeps the machine operation rotating speed constant; Making the motor of said speed change feed mechanism reach clamping speed, even the motor of said speed change feed mechanism is a low speed, for example is tens to change hundreds ofs and change or reduce to 0; Form the fuel rod 52 that is held between the driven voller with the drive roll and the said speed change feed mechanism that fuel rod 53 are pushed to said speed change feed mechanism 22 through material-pulling device 40; Make said speed change feed mechanism 22 grasp fuel rod 52, the motor acceleration of said then speed change feed mechanism makes the fuel rod 52 of speed change feed mechanism reach the working speed of fuel rod, for example; Reaching 30,000 changes or 50,000 changes or 8,90,000 change or higher (working speed look the production demand and decide); Again the fuel rod under the working speed state 52 is pushed to said driving mechanism through push rod class device from said speed change feed mechanism, the fuel rod 51 that forms driven-mechanism 22 clampings and rotate with working speed, at this moment; 11 pairs of fuel rods 51 of plasma gun in the spray chamber 10 need not to wait for driving mechanism 22 just stops can be to the fusing of fuel rod 51 plasma heat, through the centrifugal atomized metal pow der that obtains high-quality.The present invention is provided with the speed change feed mechanism, goes up and down to have guaranteed that the speed of driving mechanism is constant through the speed of speed change feed mechanism.
For the speed change feed mechanism, can be identical with the structure of driving mechanism, also can be with similar with the structure of driving mechanism; For example; The speed change feed mechanism can adopt the drive roll or the driven voller of varying number, or different-diameter drive roll or driven voller, as long as can make speed change feed mechanism low speed clamping fuel rod; And can make fuel rod reach the working speed of fuel rod after quickening, can both realize purpose to the stable rod that supplies raw material of driving mechanism.Certainly, adopt the speed change feed mechanism identical to be convenient to aligning of fuel rod, be convenient to the harmonious of driving mechanism and speed change feed mechanism installation with coaxial with driving mechanism.
For fuel rod is reached more than per minute 50,000 commentaries on classics; The diameter that can make the drive roll of said driving mechanism is more than 3.5 times of diameter of said fuel rod; If fuel rod is reached more than per minute 8,90,000 commentaries on classics; Even reach 100,000 change or more than, the diameter that can make the drive roll of said driving mechanism is 5 to 8 times of diameter of said fuel rod or more than 8 times.Generally make about fuel rod to 50000 commentaries on classics/min, fine (below the 50um) metal dust recovery rate of being obtained is up to (95%).If the rotating speed of fuel rod is higher, then fine (below the 50um) metal dust recovery rate is higher, and powder size is thinner.For example, fuel rod reaches per minute 100,000 commentaries on classics, and powder size is thinner.
Further; As shown in Figure 5, the said equipment of producing metal dust also comprises: store the hopper 30 of said fuel rod, said hopper 30 comprises: sidewall 31 and the gripper shoe 32 that is arranged on the said fuel rod of a plurality of supports in the said sidewall 31; Form broken line shape behind a plurality of gripper shoe 32 lines; The extended line of adjacent two gripper shoes 32 intersects, and adjacent two gripper shoes 32 allow the said fuel rod breach 36 that gripper shoe moves to lower floor's gripper shoe from the upper strata, the bottom of said hopper to have the discharging opening 38 that said fuel rod 50 is discharged near locating to form two gripper shoes each other; Pusher dog 35 will one one be pushed fuel rod 50 aside, sends into flow.Like this, 50 1 one of said fuel rod is discharged from said hopper, prior art can not take place, make the feed steady and continuous owing to fuel rod is discharged the crooked phenomenon of fuel rod cause by rows from said hopper.Certainly, one one of said fuel rod is discharged from said hopper, can also make hopper adopt other rational structure.
The present invention also proposes a kind of technology of utilizing the plasma atomization process to produce metal dust; Be used for fuel rod is atomized into metal dust; Said process using driving mechanism drives fuel rod and rotates, and said driving mechanism comprises: the motor of driving mechanism, the driven voller that is connected the drive roll of the driving mechanism on the motor of driving mechanism and is used to compress the driving mechanism of said fuel rod; The diameter of the drive roll of said driving mechanism is more than 2 times of diameter of said fuel rod, and the driven voller clamping of drive roll and the driving mechanism of said technology through said driving mechanism said fuel rod and rotated and make the rotating speed of said fuel rod reach more than per minute 30,000 changes.The proportioning of diameter of diameter and the said fuel rod of said fuel rod rotation and the drive roll through said driving mechanism in the driven voller clamping of the drive roll of the present invention through driving mechanism and driving mechanism, has solved the low problem of fuel rod rotating speed of prior art.About the driven voller of the drive roll of said driving mechanism and driving mechanism method of clamping to fuel rod, can adopt a drive roll and a plurality of driven voller with the fuel rod clamping, also can adopt a plurality of drive rolls and a plurality of driven voller with the fuel rod clamping.The driving mechanism that concrete method of clamping can select for use the front to describe also can adopt to belong to the present invention but the specifically described method of clamping of figure of no use.
One of the object of the invention provides and a kind ofly can satisfy the fuel rod that has melted and under high revolution, produce fine centrifugal atomizing metal dust continuously.In order to achieve the above object, the present invention is achieved in that the equipment of producing metal dust to comprising spray chamber 10 and hopper 30 vacuumizes, and charges into inert gas then.
1. safe and reliable durable in use for this equipment, motor of at first choosing and bearing can bear the above load of 30-40kg and rotate at a high speed; And its rotating mechanism and parts; There is certain intensity on the surface, the hardness and the degree of balance, clamping material (fuel rod) under the driven voller effect; Need slowly promote revolution in operation, make it prepurging and powder by atomization.
2. material (fuel rod) is the pole of Φ 51mm, and length is about 700mm, and material (fuel rod) is centering initiatively, when high rotating speed, docks feeding continuously through the speed change feed mechanism then.
3. the hopper amount of capacity is about 55, and the output＞400kg of every stove lets hopper according to the free blanking of gravity.
4. the central authorities of centering plasma gun are wanted in the axle center of fuel rod, and error must not surpass about 0.01mm.
About utilizing the plasma atomization process to produce the process of metal dust and the installation and the operation of equipment, except the improvement that the present invention mentions, prior art can be adopted in other places of not mentioning, repeats no more at this.
The invention has the beneficial effects as follows: the present invention can improve the fuel rod rotating speed greatly; Can reach per minute 50,000 commentaries on classics; Even can reach that per minute 100,000 changes or more than, than common plasma rotary-atomizing method powder manufacturing apparatus, in the structure of equipment with differ widely in form.Prior art can only atomize and produce the metal dust below the above 180um of 50um; And the present invention to be powder below the 1mm can both produce; And the following attritive powder recovery rate of 50um is high especially, and fine (50um below) metal dust recovery rate of being obtained is up to (95%), thereby can realize the production of the scale of the following attritive powder of 50um; This is that prior art institute is inaccessible far away, and prior art generally can only reach one of percentage or a few percent.Among the present invention, because the fuel rod rotating speed is high, the oxygen content of the metal dust of acquisition is than argon gas powder by atomization method, nitrogen atomization powder process method, and the metal dust that water atomization is produced is low, spherical powder hollow core powder is few, product quality is high.And the present invention be rotation at a high speed with continuously in atomizing produce metal dust, do not have the material tail problem of every material, thereby, the output of its every stove very big (＞400kg), refining metallic powder production efficiency height.
The above is merely the schematic specific embodiment of the present invention, is not in order to limit scope of the present invention.For each part of the present invention can make up under the condition of not conflicting each other, any those skilled in the art, equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, having done and modification all should belong to the scope that the present invention protects.
Claims (10)
1. equipment of producing metal dust; Be used for fuel rod is atomized into metal dust; The said equipment of producing metal dust comprises: be used to drive the driving mechanism that fuel rod rotates; It is characterized in that said driving mechanism comprises: the motor of driving mechanism, the driven voller that is connected the drive roll of the driving mechanism on the motor of driving mechanism and is used to compress the driving mechanism of said fuel rod; The grasping part that has the said fuel rod of clamping between the drive roll of said driving mechanism and the driven voller of driving mechanism; The driven voller clamping of the drive roll of said driving mechanism and driving mechanism said fuel rod and is rotated, and the diameter of the drive roll of said driving mechanism is more than 2 times of diameter of said fuel rod.
2. the equipment of producing metal dust as claimed in claim 1; It is characterized in that; The drive roll of said driving mechanism and the driven voller of driving mechanism are two; The drive roll of two said driving mechanisms is horizontally disposed with side by side; The driven voller of two said driving mechanisms is horizontally disposed with side by side, and the drive roll of top or said driving mechanism that the drive roll of said driving mechanism is positioned at the driven voller of driving mechanism is positioned at the below of the driven voller of driving mechanism, and the diameter of the drive roll of said driving mechanism is more than 3.5 times of diameter of said fuel rod.
3. the equipment of producing metal dust as claimed in claim 2; It is characterized in that; The drive roll of said driving mechanism and the driven voller of driving mechanism are two; The line in the axle center of the driven voller of the line in the axle center of the drive roll of two said driving mechanisms and two said driving mechanisms forms crossing diagonal, and the diameter of the drive roll of said driving mechanism is more than 3.5 times of diameter of said fuel rod.
4. like claim 2 or the 3 described equipment of producing metal dust; It is characterized in that; The said equipment of producing metal dust also comprises: be positioned at the speed change feed mechanism at the said driving mechanism upper reaches, said speed change feed mechanism comprises: the motor of speed change feed mechanism, the driven voller that is connected the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and is used to compress the speed change feed mechanism of said fuel rod; The grasping part that has the said fuel rod of clamping between the driven voller of the drive roll of said speed change feed mechanism and speed change feed mechanism; The driven voller clamping of the drive roll of said speed change feed mechanism and speed change feed mechanism said fuel rod and is rotated; The drive roll of said driving mechanism is identical with the diameter of the drive roll of said speed change feed mechanism; The driven voller of said driving mechanism is identical with the diameter of the driven voller of said speed change feed mechanism; The upper-lower position relation of the drive roll of said speed change feed mechanism and the driven voller of speed change feed mechanism is identical with the upper-lower position relation of the driven voller of the drive roll of said driving mechanism and driving mechanism; The drive roll of said speed change feed mechanism and the coaxial setting of the drive roll of said driving mechanism, the motor of said speed change feed mechanism is identical with the rotating speed of motor scope of driving mechanism.
5. the equipment of producing metal dust as claimed in claim 1; It is characterized in that; The said equipment of producing metal dust also comprises: the hopper that stores said fuel rod; Said hopper comprises: sidewall and the gripper shoe that is arranged on the said fuel rod of a plurality of supports in the said sidewall; The extended line of adjacent two gripper shoes intersects, and adjacent two gripper shoes allow the said fuel rod breach that gripper shoe moves to lower floor's gripper shoe from the upper strata near locating to form each other two gripper shoes, and the bottom of said hopper has the discharging opening that said fuel rod is discharged.
6. the equipment of producing metal dust as claimed in claim 4; It is characterized in that; The driven voller equal diameters of the drive roll of said driving mechanism and driving mechanism is connected in the said fuel rod between the driven voller of drive roll and two driving mechanisms of two driving mechanisms.
7. technology of utilizing the plasma atomization process to produce metal dust; Be used for fuel rod is atomized into metal dust; Said process using driving mechanism drives fuel rod and rotates; It is characterized in that said driving mechanism comprises: the motor of driving mechanism, the driven voller that is connected the drive roll of the driving mechanism on the motor of driving mechanism and is used to compress the driving mechanism of said fuel rod; The diameter of the drive roll of said driving mechanism is more than 2 times of diameter of said fuel rod, and the driven voller clamping of drive roll and the driving mechanism of said technology through said driving mechanism said fuel rod and rotated and make the rotating speed of said fuel rod reach more than per minute 30,000 changes.
8. the technology of utilizing the plasma atomization process to produce metal dust as claimed in claim 7; It is characterized in that; The diameter of the drive roll of said driving mechanism is more than 3.5 times of diameter of said fuel rod; To the driving mechanism rod that supplies raw material, in driving mechanism supplied raw material rod motion, said driving mechanism kept the machine operation rotating speed constant to said technology at the speed change feed mechanism through the speed change feed mechanism; Said speed change feed mechanism is with clamping speed clamping fuel rod, and the speed change feed mechanism accelerates to fuel rod from clamping speed and reaches the fuel rod of the working speed of fuel rod to driving mechanism supply clamping then.
9. the technology of utilizing the plasma atomization process to produce metal dust as claimed in claim 8; It is characterized in that said speed change feed mechanism comprises: the motor of speed change feed mechanism, the driven voller that is connected the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and is used to compress the speed change feed mechanism of said fuel rod; Said speed change feed mechanism is when driving mechanism supplies raw material rod; Said driving mechanism keeps the machine operation rotating speed constant; Make the motor of said speed change feed mechanism reach clamping speed; Between the driven voller with the drive roll that fuel rod pushed to said speed change feed mechanism and said speed change feed mechanism; Make said speed change feed mechanism grasp fuel rod, the motor of said then speed change feed mechanism quickens to make fuel rod reach the working speed of fuel rod, again the fuel rod under the working speed state is pushed to said driving mechanism from said speed change feed mechanism.
10. the technology of utilizing the plasma atomization process to produce metal dust as claimed in claim 7 is characterized in that said fuel rod is stored in the hopper, and one one of said fuel rod is discharged from said hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210044722.8A CN102528064B (en) | 2012-02-23 | 2012-02-23 | Equipment and technology for preparing metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210044722.8A CN102528064B (en) | 2012-02-23 | 2012-02-23 | Equipment and technology for preparing metal powder |
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| Publication Number | Publication Date |
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| CN102528064A true CN102528064A (en) | 2012-07-04 |
| CN102528064B CN102528064B (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210044722.8A Expired - Fee Related CN102528064B (en) | 2012-02-23 | 2012-02-23 | Equipment and technology for preparing metal powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822104A (en) * | 2019-04-19 | 2019-05-31 | 郑州机械研究所有限公司 | Base material cantilever drive mechanism for plasma rotating electrode atomization powder |
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| CN101927350A (en) * | 2010-01-15 | 2010-12-29 | 张建利 | Method for preparing cobalt-base alloy CoCrMo prills by adopting plasma auxiliary rotation electrodes |
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| CN202447672U (en) * | 2012-02-23 | 2012-09-26 | 姚振梅 | Equipment for preparing metal powder |
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|---|---|---|---|---|
| GB1336280A (en) * | 1972-03-14 | 1973-11-07 | Glazunov S G Khrustsevich L A | Device for producing fine metal powder |
| JPS6280205A (en) * | 1985-10-01 | 1987-04-13 | Kobe Steel Ltd | Production of fine metallic powder |
| JPH01225703A (en) * | 1988-03-03 | 1989-09-08 | Nippon Steel Weld Prod & Eng Co Ltd | Method for melting stock to obtain metal powder of uniform particle size |
| JPH03226508A (en) * | 1990-01-31 | 1991-10-07 | Ngk Insulators Ltd | Manufacture of beryllium spherical particle |
| CN2373210Y (en) * | 1999-06-09 | 2000-04-12 | 冶金工业部钢铁研究总院 | Alarm device for rotation electrode powder manufacturing apparatus |
| CN101927350A (en) * | 2010-01-15 | 2010-12-29 | 张建利 | Method for preparing cobalt-base alloy CoCrMo prills by adopting plasma auxiliary rotation electrodes |
| CN202011156U (en) * | 2010-12-02 | 2011-10-19 | 王剑波 | Plastic lining device for steel pipe |
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| CN109822104A (en) * | 2019-04-19 | 2019-05-31 | 郑州机械研究所有限公司 | Base material cantilever drive mechanism for plasma rotating electrode atomization powder |
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| CN102528064B (en) | 2014-02-12 |
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