CN102528064B - Equipment and technology for preparing metal powder - Google Patents
Equipment and technology for preparing metal powder Download PDFInfo
- Publication number
- CN102528064B CN102528064B CN201210044722.8A CN201210044722A CN102528064B CN 102528064 B CN102528064 B CN 102528064B CN 201210044722 A CN201210044722 A CN 201210044722A CN 102528064 B CN102528064 B CN 102528064B
- Authority
- CN
- China
- Prior art keywords
- driving mechanism
- fuel rod
- speed change
- drive roll
- change feed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
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 process of producing metal dust, in particular to a kind of, utilize the equipment that plasma atomization process produces metal dust and utilize plasma atomization process to produce the technique of metal dust.
Background technology
Refining metallic powder can adopt argon gas powder by atomization method, nitrogen atomization powder process method and water atomization, plasma atomization to produce metal dust.At present, adopted plasma atomization process to produce metal dust.Plasma atomization process is with the plasma gun being arranged in spray chamber, the raw metal rod extending in spray chamber to be acted on, raw metal rod rotates in spray chamber high speed by the drive of driving mechanism (being mainly motor), produce centrifugal phenomenon, under the high-temperature heating fusing effect of plasma gun, be atomized into metal dust.
Existing technique is produced refining metallic powder; fuel rod is under the drive of driving mechanism; general rotating speed turns following or left and right (super only 1.55 ten thousand turn) per minute 1.5 ten thousand; the powder size narrow range obtaining under other rotating speed of this grade; conventionally the powder of can only atomization producing 50um to 180um; be difficult to produce the powder below 50um; and powder size is thick; allow to obtain the powder below 50um; output also just accounts for a few percent of the powder powder after atomization; can not obtain stable and production scale, production efficiency is lower.
In addition, as depicted in figs. 1 and 2, the structure of existing hopper 130 is as follows: in hopper 130, be provided with the gripper shoe 132 that many rows tilt, gripper shoe 132 supports fuel rod 50, fuel rod 50 is arranged in gripper shoe 132, on hopper 130, also establish leading screw 131, leading screw 131 is provided with connecting plate 133, connecting plate 133 holds undermost gripper shoe 132, leading screw 131 drives connecting plate 133 to move up and down, thereby gripper shoe 132 is moved up and down, when gripper shoe 132 often moves down a row, just there is row's fuel rod 50 to discharge from the discharging opening of hopper 130, along the transfer passage 137 tilting, roll, by pusher dog 135, send in pay-off, then, pay-off is sent to fuel rod 50 in driving mechanism, driving mechanism clamps and drives fuel rod 50 to rotate in spray chamber high speed.In this process, because fuel rod 50 is out several rows of, can cause so every row's fuel rod 50 can focus on pusher dog 135 places simultaneously, make the fuel rod 50 before pusher dog 135 easily crooked, cause material loading to stop up, affect the material toggling of pusher dog 135, affect the without interruption of fuel rod 50.
Also have, driving mechanism clamps and drives fuel rod 50 to rotate in spray chamber high speed, the every atomization of fuel rod 50 once, driving mechanism just need to stop and clamp next fuel rod 50 again, then restart, High Rotation Speed, carry out atomization, like this, the atomization of adjacent two fuel rods 50 stops with regard to demand motive mechanism, again clamping, restart, affect speed of production, and driving mechanism is from High Rotation Speed to stopping again to High Rotation Speed, repeatedly toward resuming a session, accelerate the wearing and tearing of driving mechanism, reduce the service life of accelerating driving mechanism, increase maintenance and the more cost of exchange device.In addition, the process that obtains fuel rod due to driving mechanism is discontinuous, and the length of fuel rod is 700mm left and right, and the remaining stub bar of fuel rod (fuel rod one end from plasma gun away from) nearly 150 is to 170mm, the remaining stub bar of fuel rod can not atomization be powder, and raw material availability is low.
Summary of the invention
The invention provides a kind of equipment and process of producing metal dust, to solve prior art, produce the inefficient problem of metal dust below 50um.In addition, the present invention also will solve problem that prior art raw material availability is low, the problem that affects raw material supply of the crooked generation during due to raw material discharging and during to 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, for fuel rod is atomized into metal dust, the described equipment of producing metal dust comprises: for the driving mechanism that drives fuel rod to rotate, described driving mechanism comprises: the motor of driving mechanism, be connected to the drive roll of the driving mechanism on the motor of driving mechanism and for compressing the driven voller of the driving mechanism of described fuel rod; The grasping part between the drive roll of described driving mechanism and the driven voller of driving mechanism with the described fuel rod of clamping, the drive roll of described driving mechanism and the driven voller of driving mechanism are clamping described fuel rod and are rotating, and the diameter of the drive roll of described driving mechanism is the more than 2 times of diameter of described fuel rod.
Further, the drive roll of described driving mechanism and the driven voller of driving mechanism are two, the drive roll of two described driving mechanisms is horizontally disposed with side by side, the driven voller of two described driving mechanisms is horizontally disposed with side by side, the drive roll of described driving mechanism is positioned at the top of driven voller of driving mechanism or the below that the drive roll of described driving mechanism is positioned at the driven voller of driving mechanism, and the diameter of the drive roll of described driving mechanism is the more than 3.5 times of diameter of described fuel rod.
Further, the drive roll of described 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 described driving mechanisms and two described driving mechanisms forms crossing diagonal, and the diameter of the drive roll of described driving mechanism is the more than 3.5 times of diameter of described fuel rod.
Further, the described equipment of producing metal dust also comprises: be positioned at the speed change feed mechanism of described driving mechanism upstream, described speed change feed mechanism comprises: the motor of speed change feed mechanism, be connected to the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and for compressing the driven voller of the speed change feed mechanism of described fuel rod, the grasping part between the driven voller of the drive roll of described speed change feed mechanism and speed change feed mechanism with the described fuel rod of clamping, the driven voller of the drive roll of described speed change feed mechanism and speed change feed mechanism is clamping described fuel rod and is rotating, the drive roll of described driving mechanism is identical with the diameter of the drive roll of described speed change feed mechanism, the driven voller of described driving mechanism is identical with the diameter of the driven voller of described speed change feed mechanism, the upper-lower position relation of the drive roll of described speed change feed mechanism and the driven voller of speed change feed mechanism is identical with the upper-lower position relation of the drive roll of described driving mechanism and the driven voller of driving mechanism, the drive roll of described speed change feed mechanism and the drive roll of described driving mechanism coaxially arrange, the motor of described speed change feed mechanism is identical with the range of speeds of the motor of driving mechanism.
Further, the described equipment of producing metal dust also comprises: the hopper that stores described fuel rod, described hopper comprises: sidewall and the gripper shoe that is arranged on the described fuel rod of a plurality of supports in described sidewall, the extended line of adjacent two gripper shoes intersects, adjacent two gripper shoes form near place the breach that allows described fuel rod to move to lower floor's gripper shoe from upper strata gripper shoe mutually two gripper shoes, and the bottom of described hopper has the discharging opening that described fuel rod is discharged.
Further, the driven voller equal diameters of the drive roll of described driving mechanism and driving mechanism, is connected in described fuel rod between the drive roll of two driving mechanisms and the driven voller of two driving mechanisms.
The present invention also proposes a kind of technique of utilizing plasma atomization process to produce metal dust, for fuel rod is atomized into metal dust, described process using driving mechanism drives fuel rod to rotate, and described driving mechanism comprises: the motor of driving mechanism, be connected to the drive roll of the driving mechanism on the motor of driving mechanism and for compressing the driven voller of the driving mechanism of described fuel rod; The diameter of the drive roll of described driving mechanism is the more than 2 times of diameter of described fuel rod, and described technique is clamping described fuel rod by the drive roll of described driving mechanism and the driven voller of driving mechanism and rotating and make the rotating speed of described fuel rod reach per minute 30,000 to turn above.
Further, the diameter of the drive roll of described driving mechanism is the more than 3.5 times of diameter of described fuel rod, described technique is clamping described fuel rod by the drive roll of described driving mechanism and the driven voller of driving mechanism and is rotating and make the rotating speed of described fuel rod reach per minute 50,000 to turn above, described technique by speed change feed mechanism to the driving mechanism rod that supplies raw material, at speed change feed mechanism, to driving mechanism, supply raw material in rod motion, described driving mechanism keeps machine operation rotating speed constant, described speed change feed mechanism is with clamping speed clamping fuel rod, then speed change feed mechanism accelerates to working speed that fuel rod reaches fuel rod to the fuel rod of driving mechanism supply clamping from clamping speed.
Further, described speed change feed mechanism comprises: the motor of speed change feed mechanism, be connected to the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and for compressing the driven voller of the speed change feed mechanism of described fuel rod; Described speed change feed mechanism is when supplying raw material rod to driving mechanism, described driving mechanism keeps machine operation rotating speed constant, make the motor of described speed change feed mechanism reach clamping speed, fuel rod is pushed to again between the drive roll of described speed change feed mechanism and the driven voller of described speed change feed mechanism, make described speed change feed mechanism clamp fuel rod, then the motor of described speed change feed mechanism accelerates to make fuel rod reach the working speed of fuel rod, then the fuel rod under working speed state is pushed to described driving mechanism from described speed change feed mechanism.
Further, described fuel rod is stored in hopper, and one one of described fuel rod is discharged from described hopper.
The present invention is clamping by the drive roll of driving mechanism and the driven voller of driving mechanism that described fuel rod rotates and the proportioning of the diameter of drive roll and the diameter of described fuel rod by described driving mechanism, make the rotating speed of described fuel rod reach per minute 30,000 and turn above, solved the problem of prior art at the bottom of due to the metal dust recovery rate below the low 50um causing of fuel rod rotating speed.
And then the present invention discharges one one of described fuel rod from described hopper, can there is not prior art because fuel rod is discharged the crooked phenomenon of fuel rod causing by rows from described hopper, make feed steady and continuous.
And then, the present invention by speed change feed mechanism to the driving mechanism rod that supplies raw material, make described driving mechanism keep machine operation rotating speed constant, described speed change feed mechanism is with clamping speed (low speed) clamping fuel rod, then speed change feed mechanism accelerates to working speed that fuel rod reaches fuel rod to the fuel rod of driving mechanism supply clamping from clamping speed, like this, make described driving mechanism total energy keep working speed, make the fuel rod of described driving mechanism clamping to enter into driving mechanism with working speed, avoided driving mechanism from stopping, again be clamped to the process of restarting, the continuity that has kept atomization work, improved the utilization rate of plasma gun, improved production efficiency, the wearing and tearing of driving mechanism have been reduced, increased the service life of accelerating driving mechanism, maintenance and the cost of exchange device have more been reduced.And the present invention is that atomization is produced metal dust, do not had the material tail problem of every material at High Rotation Speed and continuously, the remaining stub bar of fuel rod also fully atomization be powder, raw material availability significantly improves.
Accompanying drawing explanation
Fig. 1 shows the structure of existing hopper from main apparent direction;
Fig. 2 shows the structure of existing hopper from side-looking direction;
Fig. 3 shows according to the overall structure schematic diagram of the equipment of producing metal dust of the embodiment of the present invention from main apparent direction;
Fig. 4 shows according to the overall structure schematic diagram of the equipment of producing metal dust of the embodiment of the present invention from overlooking direction;
Fig. 5 shows according to the structure of the hopper of the embodiment of the present invention from main apparent direction;
Fig. 6 shows the first structure according to the driving mechanism of the embodiment of the present invention, and wherein, the drive roll of driving mechanism is positioned at the top of the driven voller of driving mechanism;
Fig. 7 shows the second structure according to the driving mechanism of the embodiment of the present 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 present 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.
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
For technical characterictic of the present invention, object and effect being had more clearly, understand, now contrast accompanying drawing explanation the specific embodiment of the present invention.
As shown in Figure 3 and Figure 4, the present invention proposes a kind of equipment of producing metal dust, for fuel rod 50 is atomized into metal dust, the present invention proposes raw metal rod 50 effects that adopt 11 pairs of plasma guns that are arranged in spray chamber 10 to extend into the High Rotation Speed in spray chamber, the described equipment of producing metal dust comprises: for the driving mechanism 21 that drives the first fuel rod 50 to rotate, as shown in Figure 6 to 8, described driving mechanism 21 comprises: the motor (not shown) of driving mechanism, be connected to the drive roll 211 of the driving mechanism on the machine shaft of driving mechanism, and for compressing the driven voller 213 of the driving mechanism of described fuel rod, the grasping part between the drive roll 211 of described driving mechanism and the driven voller 213 of driving mechanism with the described fuel rod 50 of clamping, the drive roll 211 of described driving mechanism and the driven voller 213 of driving mechanism are clamping described fuel rod 50 and are rotating, the driven voller 213 of driving mechanism compresses fuel rod 50 on the one hand, drive roll 211 with driving mechanism rotates jointly on the one hand, after thereby the drive roll 211 that forms driving mechanism rotates, the drive roll 211 of described driving mechanism and the driven voller 213 of driving mechanism are clamping described fuel rod 50 and are rotating, the diameter of the drive roll 211 of described driving mechanism is the more than 2 times of diameter of described fuel rod 50.The driven voller 213 of driving mechanism can compress or unclamp fuel rod 50 by hold-down mechanism, about the concrete structure of hold-down mechanism, is not the emphasis that the present invention discusses, and it can adopt the various suitable methods of prior art.
The motor of driving mechanism of the present invention is (for example, for per minute 1.5 ten thousand turn) under the rotating speed that adopts existing motor, the rotating speed of the drive roll 211 of driving mechanism is also for per minute 1.5 ten thousand turn, setting the diameter of drive roll 211 of driving mechanism is n with the ratio of the diameter of fuel rod 50, can be so that be clamped in n times of rotating speed of the motor that the drive roll 211 of described driving mechanism and the rotating speed of the fuel rod 50 between driving mechanism are driving mechanism.If the diameter that makes the drive roll 211 of driving mechanism is the more than 2 times of diameter of described fuel rod 50, can be so that the rotating speed of fuel rod 50 be 30,000 to turn above, can produce the powder below the 50um of higher proportion.Further, the diameter of the drive roll of described driving mechanism is the more than 3.5 times of diameter of described fuel rod, described technique by the drive roll of described driving mechanism and the driven voller of driving mechanism clamping described fuel rod rotate make the rotating speed of described fuel rod reach per minute 50,000 turn or more than, like this, can produce the powder below more a high proportion of 50um.In addition, can also pass through motor frequency conversion, make the rotating speed of fuel rod 50 not only can reach 30,000 and turn above, can also reach 10,000 and turn following, or 5,000 turn following, even 3,000 turn following, 2000 turn following, like this, the powder that the present invention can not only produce below 50um can also be produced the powder below the above 1mm of 180um, can expand the powder size scope of product.
The present invention is clamping by the drive roll of driving mechanism and the driven voller of driving mechanism that described fuel rod rotates and the proportioning of the diameter of drive roll and the diameter of described fuel rod by described driving mechanism, solved the low problem of fuel rod rotating speed of prior art, and without reduction box is set, reduced occupation of land and the cost of equipment.In addition, even if also having solved, the present invention adopt reduction box can not effectively improve the problem of fuel rod rotating speed.
The method of clamping to fuel rod about the drive roll of described driving mechanism and the driven voller of driving mechanism, can adopt a drive roll and a plurality of driven voller that fuel rod is clamped, and also can adopt a plurality of drive rolls and a plurality of driven voller that fuel rod is clamped.Further, as shown in Figure 6 to 7, the drive roll 211 of described driving mechanism and the driven voller 213 of driving mechanism are two, the drive roll 211 of two described driving mechanisms is horizontally disposed with side by side, the driven voller 213 of two described driving mechanisms is horizontally disposed with side by side, as shown in Figure 6, the drive roll 211 of described driving mechanism is positioned at the top of the driven voller of driving mechanism, as shown in Figure 7, the drive roll 211 of described driving mechanism is positioned at the below of the driven voller 213 of driving mechanism, the diameter of the drive roll of described driving mechanism is the more than 3.5 times of diameter of described fuel rod, can realize like this drive roll of driving mechanism and the clamping of the driven voller of driving mechanism to fuel rod, make the rotating speed of described fuel rod reach per minute 50,000 and turn above.
Further, as shown in Figure 8, the drive roll 211 of described 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 described driving mechanisms and the driven voller 213 of two described driving mechanisms forms crossing diagonal, the diameter of the drive roll 211 of described driving mechanism is the more than 3.5 times of diameter of described fuel rod, so also can realize the drive roll of driving mechanism and the clamping of the driven voller of driving mechanism to fuel rod, make the rotating speed of described fuel rod reach per minute 50,000 and turn above.
From the structure of stating driving mechanism shown in Fig. 6 to Fig. 8, can realize the drive roll of driving mechanism and the clamping of the driven voller of driving mechanism to fuel rod, above-mentioned various method of clamping can be selected as required flexibly.Driven voller 213 diameters of the drive roll 211 of wherein said driving mechanism and driving mechanism can equate also can not wait.
Further, as shown in Figure 6 to 8, driven voller 213 equal diameters of the drive roll 211 of described driving mechanism and driving mechanism, in fuel rod 51, be connected between the drive roll 211 of two driving mechanisms and the driven voller 213 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, as shown in Figure 3 to Figure 4, the described equipment of producing metal dust also comprises: the speed change feed mechanism 22 that is positioned at described driving mechanism upstream, the structure of described speed change feed mechanism 22 is identical or similar with the structure of driving mechanism 22, therefore, each part in speed change feed mechanism 22 no longer indicates.Described speed change feed mechanism 22 can comprise: the motor of speed change feed mechanism, be connected to the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and for compressing the driven voller of the speed change feed mechanism of described fuel rod, the grasping part between the driven voller of the drive roll of described speed change feed mechanism and speed change feed mechanism with the described fuel rod of clamping, the driven voller of the drive roll of described speed change feed mechanism and speed change feed mechanism is clamping described fuel rod and is rotating, the drive roll of described driving mechanism is identical with the diameter of the drive roll of described speed change feed mechanism, the driven voller of described driving mechanism is identical with the diameter of the driven voller of described speed change feed mechanism, the upper-lower position relation of the drive roll of described speed change feed mechanism and the driven voller of speed change feed mechanism is identical with the upper-lower position relation of the drive roll of described driving mechanism and the driven voller of driving mechanism, the drive roll of described speed change feed mechanism and the drive roll of described driving mechanism coaxially arrange, the motor of described speed change feed mechanism is identical with the range of speeds of the motor of driving mechanism.
Adopt speed change feed mechanism to the driving mechanism rod that supplies raw material, make described driving mechanism keep machine operation rotating speed constant, described speed change feed mechanism is with clamping speed (low speed) clamping fuel rod, then speed change feed mechanism accelerates to working speed that fuel rod reaches fuel rod to the fuel rod of driving mechanism supply clamping from clamping speed, like this, make described driving mechanism total energy keep working speed, make the fuel rod of described driving mechanism clamping to enter into driving mechanism with working speed, avoided driving mechanism from stopping, again be clamped to the process of restarting, the continuity that has kept atomization work, improved the utilization rate of plasma gun, improved production efficiency, the wearing and tearing of driving mechanism have been reduced, increased the service life of accelerating driving mechanism, maintenance and the cost of exchange device have more been reduced.
Adopt speed change feed mechanism to the driving mechanism rod that supplies raw material, object and effect are in order to guarantee that driving mechanism keeps machine operation rotating speed constant, guarantee carrying out continuously of production, therefore, by the identical speed change feed mechanism of the driving mechanism with Fig. 6 to Fig. 8, just can so that: at speed change feed mechanism, to driving mechanism, supply raw material in rod motion, described driving mechanism keeps machine operation rotating speed constant, described speed change feed mechanism is with clamping speed clamping fuel rod, then speed change feed mechanism accelerates to working speed that fuel rod reaches fuel rod to the fuel rod of driving mechanism supply clamping from clamping speed.
For example, as shown in Figure 3 and Figure 4, the working speed of the motor of driving mechanism is 1.5 ten thousand to turn or per minute above, described speed change feed mechanism is when supplying raw material rod to driving mechanism, described driving mechanism keeps machine operation rotating speed constant, make the motor of described speed change feed mechanism reach clamping speed, even if the motor of described speed change feed mechanism is low speed, be for example tens to turn hundreds of and turn or be down to 0, fuel rod 53 is pushed to the fuel rod 52 that between the drive roll of described speed change feed mechanism 22 and the driven voller of described speed change feed mechanism, formation is held by material-pulling device 40, make described speed change feed mechanism 22 clamp fuel rod 52, then the acceleration of the motor of described 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 turns or 50,000 turns or 8, 90000 turn or higher (working speed is depending on Production requirement), again the fuel rod under working speed state 52 is pushed to described driving mechanism by push rod class device from described speed change feed mechanism, the fuel rod 51 that forms driven-mechanism 22 clampings and rotate with working speed, now, 11 pairs of fuel rods 51 of plasma gun in spray chamber 10 just can melt fuel rod 51 plasma high-temperature heatings without waiting for that driving mechanism 22 stops, through the centrifugal atomized metal pow der that obtains high-quality.The present invention arranges speed change feed mechanism, and the speed lifting by speed change feed mechanism has guaranteed that the speed of driving mechanism is constant.
For 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, speed change feed mechanism can adopt 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 after accelerating, can make fuel rod reach the working speed of fuel rod, can realize to the stable excellent object that supplies raw material of driving mechanism.Certainly, adopt the speed change feed mechanism identical with driving mechanism to be convenient to aligning of fuel rod and coaxial, be convenient to the harmonious of driving mechanism and the installation of speed change feed mechanism.
In order to make fuel rod reach per minute 50,000, turn above, the diameter that can make the drive roll of described driving mechanism is the more than 3.5 times of diameter of described fuel rod, if make fuel rod reach per minute 8,90,000, turn above, even reach 100,000 turn or more than, the diameter that can make the drive roll of described driving mechanism is 5 to 8 times of diameter of described fuel rod or more than 8 times.Generally make turn/min of fuel rod to 50000 left and right, fine (50um is following) metal dust recovery rate of obtaining is up to (95%).If the rotating speed of fuel rod is higher, fine (50um is following) metal dust recovery rate is higher, and powder size is thinner.For example, fuel rod reaches per minute 100,000 and turns, and powder size is thinner.
Further, as shown in Figure 5, the described equipment of producing metal dust also comprises: the hopper 30 that stores described fuel rod, described hopper 30 comprises: sidewall 31 and the gripper shoe 32 that is arranged on the described fuel rod of a plurality of supports in described sidewall 31, after a plurality of gripper shoe 32 lines, form fold-line-shaped, the extended line of adjacent two gripper shoes 32 intersects, adjacent two gripper shoes 32 form near place the breach 36 that allows described fuel rod to move to lower floor's gripper shoe from upper strata gripper shoe mutually two gripper shoes, the bottom of described hopper has the discharging opening 38 that described fuel rod 50 is discharged, pusher dog 35 will one one be pushed fuel rod 50 aside, send into follow-up flow process.Like this, can make 50 1 one of described fuel rod discharge from described hopper, prior art can not occur because fuel rod is discharged the crooked phenomenon of fuel rod causing by rows from described hopper, make feed steady and continuous.Certainly, make one one of described fuel rod discharge from described hopper, can also make hopper adopt other rational structures.
The present invention also proposes a kind of technique of utilizing plasma atomization process to produce metal dust, for fuel rod is atomized into metal dust, described process using driving mechanism drives fuel rod to rotate, and described driving mechanism comprises: the motor of driving mechanism, be connected to the drive roll of the driving mechanism on the motor of driving mechanism and for compressing the driven voller of the driving mechanism of described fuel rod; The diameter of the drive roll of described driving mechanism is the more than 2 times of diameter of described fuel rod, and described technique is clamping described fuel rod by the drive roll of described driving mechanism and the driven voller of driving mechanism and rotating and make the rotating speed of described fuel rod reach per minute 30,000 to turn above.The present invention is clamping by the drive roll of driving mechanism and the driven voller of driving mechanism that described fuel rod rotates and the proportioning of the diameter of drive roll and the diameter of described fuel rod by described driving mechanism, has solved the low problem of fuel rod rotating speed of prior art.The method of clamping to fuel rod about the drive roll of described driving mechanism and the driven voller of driving mechanism, can adopt a drive roll and a plurality of driven voller that fuel rod is clamped, and also can adopt a plurality of drive rolls and a plurality of driven voller that fuel rod is clamped.Concrete method of clamping can be selected previously described driving mechanism, also can adopt and belongs to the present invention but do not use the specifically described method of clamping of figure.
One of object of the present invention is to provide and a kind ofly can meets the fuel rod having melted and under high revolution, produce continuously fine centrifugal atomizing metal dust.In order to achieve the above object, the present invention is achieved in that comprising that the equipment of producing metal dust of spray chamber 10 and hopper 30 vacuumizes, and is then filled with inert gas.
1. safe and reliable durable in use for this equipment, first the motor of choosing and bearing, can bear the above load High Rotation Speed of 30-40kg, and its rotating mechanism and parts, there is some strength on surface, and hardness and the degree of balance clamp material (fuel rod) under 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 700mm left and right, and material (fuel rod) is centering initiatively, then when high rotating speed, passes through speed change feed mechanism continuously to feeding.
3. hopper amount of capacity is 55 left and right, and the output > 400kg of every stove, allows hopper according to free gravity blanking.
4. the central authorities of centering plasma gun are wanted in the axle center of fuel rod, and error must not surpass 0.01mm left and right.
About utilizing plasma atomization process to produce the process of metal dust and the installation of equipment and operation, except the improvement that the present invention mentions, other places of not mentioning can adopt prior art, do not repeat them here.
The invention has the beneficial effects as follows: the present invention can improve fuel rod rotating speed greatly, can reach per minute 50,000 turns, even can reach per minute 100,000 turn 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 atomization be produced the metal dust below the above 180um of 50um; and being powder below 1mm, the present invention can produce; and the following attritive powder recovery rate of 50um is high especially; fine (50um is following) metal dust recovery rate of obtaining is up to (95%); thereby can realize the production of the scale of the following attritive powder of 50um; this is that prior art does not reach far away, and prior art generally can only reach one of percentage or a few percent.In the present invention, because 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 is that atomization is produced metal dust, do not had the material tail problem of every material at High Rotation Speed and continuously, thereby the output of its every stove is (> 400kg) very greatly, and refining metallic powder production efficiency is high.
The foregoing is only the schematic specific embodiment of the present invention, not in order to limit scope of the present invention.For each part of the present invention can mutually combine under the condition of not conflicting, any those skilled in the art, not departing from equivalent variations and the modification of having done under the prerequisite of design of the present invention and principle, all should belong to the scope of protection of the invention.
Claims (6)
1. an equipment of producing metal dust, for fuel rod is atomized into metal dust, the described equipment of producing metal dust comprises: for the driving mechanism that drives fuel rod to rotate, it is characterized in that, described driving mechanism comprises: the motor of driving mechanism, be connected to the drive roll of the driving mechanism on the motor of driving mechanism and for compressing the driven voller of the driving mechanism of described fuel rod; The grasping part between the drive roll of described driving mechanism and the driven voller of driving mechanism with the described fuel rod of clamping, the drive roll of described driving mechanism and the driven voller of driving mechanism are clamping described fuel rod and are rotating, and the diameter of the drive roll of described driving mechanism is the more than 2 times of diameter of described fuel rod;
The drive roll of described driving mechanism and the driven voller of driving mechanism are two, the drive roll of two described driving mechanisms is horizontally disposed with side by side, the driven voller of two described driving mechanisms is horizontally disposed with side by side, the drive roll of described driving mechanism is positioned at the top of driven voller of driving mechanism or the below that the drive roll of described driving mechanism is positioned at the driven voller of driving mechanism, and the diameter of the drive roll of described driving mechanism is the more than 3.5 times of diameter of described fuel rod;
The described equipment of producing metal dust also comprises: be positioned at the speed change feed mechanism of described driving mechanism upstream, described speed change feed mechanism comprises: the motor of speed change feed mechanism, be connected to the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and for compressing the driven voller of the speed change feed mechanism of described fuel rod, the grasping part between the driven voller of the drive roll of described speed change feed mechanism and speed change feed mechanism with the described fuel rod of clamping, the driven voller of the drive roll of described speed change feed mechanism and speed change feed mechanism is clamping described fuel rod and is rotating, the drive roll of described driving mechanism is identical with the diameter of the drive roll of described speed change feed mechanism, the driven voller of described driving mechanism is identical with the diameter of the driven voller of described speed change feed mechanism, the upper-lower position relation of the drive roll of described speed change feed mechanism and the driven voller of speed change feed mechanism is identical with the upper-lower position relation of the drive roll of described driving mechanism and the driven voller of driving mechanism, the drive roll of described speed change feed mechanism and the drive roll of described driving mechanism coaxially arrange, the motor of described speed change feed mechanism is identical with the range of speeds of the motor of driving mechanism.
2. the equipment of producing metal dust as claimed in claim 1, it is characterized in that, the described equipment of producing metal dust also comprises: the hopper that stores described fuel rod, described hopper comprises: sidewall and the gripper shoe that is arranged on the described fuel rod of a plurality of supports in described sidewall, the extended line of adjacent two gripper shoes intersects, adjacent two gripper shoes form near place the breach that allows described fuel rod to move to lower floor's gripper shoe from upper strata gripper shoe mutually two gripper shoes, and the bottom of described hopper has the discharging opening that described fuel rod is discharged.
3. the equipment of producing metal dust as claimed in claim 1, it is characterized in that, the driven voller equal diameters of the drive roll of described driving mechanism and driving mechanism, is connected in described fuel rod between the drive roll of two driving mechanisms and the driven voller of two driving mechanisms.
4. a technique of utilizing plasma atomization process to produce metal dust, for fuel rod is atomized into metal dust, described process using driving mechanism drives fuel rod to rotate, it is characterized in that, described driving mechanism comprises: the motor of driving mechanism, be connected to the drive roll of the driving mechanism on the motor of driving mechanism and for compressing the driven voller of the driving mechanism of described fuel rod; The diameter of the drive roll of described driving mechanism is the more than 2 times of diameter of described fuel rod, and described technique is clamping described fuel rod by the drive roll of described driving mechanism and the driven voller of driving mechanism and rotating and make the rotating speed of described fuel rod reach per minute 30,000 to turn above;
The diameter of the drive roll of described driving mechanism is the more than 3.5 times of diameter of described fuel rod, described technique by speed change feed mechanism to the driving mechanism rod that supplies raw material, at speed change feed mechanism, to driving mechanism, supply raw material in rod motion, described driving mechanism keeps machine operation rotating speed constant, described speed change feed mechanism is with clamping speed clamping fuel rod, and then speed change feed mechanism accelerates to fuel rod from clamping speed and reaches the working speed of fuel rod to the fuel rod of driving mechanism supply clamping.
5. the technique of utilizing plasma atomization process to produce metal dust as claimed in claim 4, it is characterized in that, described speed change feed mechanism comprises: the motor of speed change feed mechanism, be connected to the drive roll of the speed change feed mechanism on the motor of speed change feed mechanism and for compressing the driven voller of the speed change feed mechanism of described fuel rod; Described speed change feed mechanism is when supplying raw material rod to driving mechanism, described driving mechanism keeps machine operation rotating speed constant, make the motor of described speed change feed mechanism reach clamping speed, fuel rod is pushed between the drive roll of described speed change feed mechanism and the driven voller of described speed change feed mechanism, make described speed change feed mechanism clamp fuel rod, then the motor of described speed change feed mechanism accelerates to make fuel rod reach the working speed of fuel rod, then the fuel rod under working speed state is pushed to described driving mechanism from described speed change feed mechanism.
6. the technique of utilizing plasma atomization process to produce metal dust as claimed in claim 4, is characterized in that, described fuel rod is stored in hopper, and one one of described fuel rod is discharged from described 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102528064A CN102528064A (en) | 2012-07-04 |
| CN102528064B true CN102528064B (en) | 2014-02-12 |
Family
ID=46336779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210044722.8A Expired - Fee Related CN102528064B (en) | 2012-02-23 | 2012-02-23 | Equipment and technology for preparing metal powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102528064B (en) |
Families Citing this family (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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1336280A (en) * | 1972-03-14 | 1973-11-07 | Glazunov S G Khrustsevich L A | Device for producing fine metal powder |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6280205A (en) * | 1985-10-01 | 1987-04-13 | Kobe Steel Ltd | Production of fine metallic powder |
| JP2741205B2 (en) * | 1988-03-03 | 1998-04-15 | 日鐵溶接工業 株式会社 | Material melting method for obtaining metal powder with uniform particle size |
| JP2604869B2 (en) * | 1990-01-31 | 1997-04-30 | 日本碍子 株式会社 | Method for producing beryllium spherical particles |
| 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 |
| CN202447672U (en) * | 2012-02-23 | 2012-09-26 | 姚振梅 | Equipment for preparing metal powder |
-
2012
- 2012-02-23 CN CN201210044722.8A patent/CN102528064B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1336280A (en) * | 1972-03-14 | 1973-11-07 | Glazunov S G Khrustsevich L A | Device for producing fine metal powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102528064A (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103014696B (en) | Synchronous powder feeding device for laser cladding machining | |
| CN105598864B (en) | Prepared by a kind of extra hard material grinding wheel throws stand material device with automatic | |
| CN105442066B (en) | A kind of air bubble spinning device for preparing nano-composite fiber and air bubble spinning method | |
| CN101992278B (en) | Spray deposition region fluid type controller matched with continuous extruder | |
| CN201445981U (en) | Novel ball mill | |
| CN205851026U (en) | A kind of powdery paints milling device | |
| CN202447672U (en) | Equipment for preparing metal powder | |
| CN102528064B (en) | Equipment and technology for preparing metal powder | |
| CN107138734A (en) | A kind of PREP powder manufacturing apparatus and method | |
| CN208906288U (en) | A kind of feeding device for thread rolling machine | |
| CN102357380B (en) | Device for grinding materials by adopting plurality of series-parallel connected barrels | |
| CN209109278U (en) | A kind of grinding disc of vertical mill increasing device | |
| CN105214817A (en) | For the roller mill classification pay-off of processing steel slag | |
| CN105986338B (en) | A kind of opener of purified cotton | |
| CN203302325U (en) | Device for adding liquid auxiliary materials into tobacco in high-uniformity mode | |
| CN203306693U (en) | Automatic feeding system of ceramic rolling forming machine | |
| CN203843078U (en) | Discharging device of phosphor copper ball rolling machine | |
| CN110614377B (en) | Production process for preparing copper powder by using SCR (Selective catalytic reduction) shaft furnace system | |
| CN204412188U (en) | A kind of homogenous charge compression system for the production of paste essence | |
| CN201979025U (en) | Double-feeding spring coiling manufacture device for suspension spring | |
| CN101476012B (en) | Feeding apparatus for feeding to rotary hearth furnace turntable and feeding system of rotary hearth furnace | |
| CN105297185A (en) | Refined cotton opening machine high in cotton opening efficiency | |
| CN204711857U (en) | Material loading even distributor produced by emery wheel | |
| CN218951578U (en) | Bale plucker mechanism | |
| CN217189830U (en) | Crushing mixer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |