CN109465463A - A kind of rotation electrode fuel pulverizing plant and method - Google Patents
A kind of rotation electrode fuel pulverizing plant and method Download PDFInfo
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- CN109465463A CN109465463A CN201811598290.9A CN201811598290A CN109465463A CN 109465463 A CN109465463 A CN 109465463A CN 201811598290 A CN201811598290 A CN 201811598290A CN 109465463 A CN109465463 A CN 109465463A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
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Abstract
The invention discloses a kind of rotation electrode fuel pulverizing plant and methods, are related to field of preparing metal powder.To solve the problem of the partial size of metal powder in the prior art concentrate on 20~250 μm there are present rotation electrode powder-making technique 3D printing field apply.The device includes: live spindle, second level atomising mechanism, plasma generator, metal bar material, spray chamber, feeding pedestal；The upper end for being sent into pedestal is arranged in live spindle, and one end of live spindle and metal bar material are coaxially connected；The internal diameter of second level atomising mechanism is greater than the outer diameter of metal bar material, second level atomising mechanism and metal bar material are coaxial arrangement, for second level atomising mechanism for generating the direction of rotation reverse high-speed gas opposite with metal bar material direction of rotation, it is molten drop that the metal strip breakup of drop to be formed is melted in the front end of metal bar material by reverse high-speed gas；One end of plasma generator extends in the spray chamber, and the other end is fixed on the outside of the spray chamber.
Description
Technical field
The present invention relates to metal powder preparation technical field, a kind of rotation electrode fuel pulverizing plant and side are more particularly related to
Method.
Background technique
Currently, the metal powder of rotation electrode powder manufacturing apparatus production is low etc. with its sphericity height, good fluidity, impurity content
Many fine qualities are used widely in field of powder metallurgy such as the isometrical pressure of heat, thermal sprayings.In recent years as metal increases
The development of the new techniques such as material manufacture, injection moulding, proposes higher want to the quality especially particle diameter distribution of metal powder
It asks, these new techniques are concentrated mainly on 10~100 μm to metal powder partial size.
Traditional rotation electrode powder equipment is limited by the technical bottlenecks such as equipment maximal work revolving speed, metal bar material diameter,
The metal powder partial size of production concentrates on 20~250 μm, and thicker powder diameter limits rotation electrode powder-making technique and beats in 3D
The application in print field.
Summary of the invention
The embodiment of the present invention provides a kind of rotation electrode fuel pulverizing plant and method, to solve metal powder in the prior art
Partial size concentrate on 20~250 μm, there are problems that present rotation electrode powder-making technique 3D printing field apply.
The embodiment of the present invention provides a kind of rotation electrode fuel pulverizing plant, comprising: live spindle, second level atomising mechanism, wait from
Electronic generator, metal bar material, spray chamber are sent into pedestal；
The upper end for being sent into pedestal, one end of the live spindle and the metal bar material is arranged in the live spindle
It is coaxially connected；
The internal diameter of the second level atomising mechanism is greater than the outer diameter of the metal bar material, the second level atomising mechanism and the gold
Belonging to bar is coaxial arrangement, and the second level atomising mechanism is opposite with the metal bar material direction of rotation for generating direction of rotation
The front end of the metal bar material is melted the metal strip breakup of drop to be formed and is by reverse high-speed gas, the reverse high-speed gas
Molten drop；
One end of the plasma generator extends in the spray chamber, and the other end is fixed on the outside of the spray chamber.
It preferably, further include servo feed mechanism, one end of the servo feed mechanism is connected with the feeding pedestal, uses
In the driving feeding pedestal axially reciprocating；
The live spindle drives the metal bar material high speed rotation, realize the front end of the metal bar material it is described it is equal from
Fusing forms metal strip drop under the plasma torch that electronic generator generates；
Wherein, the live spindle directly drives the metal bar material high speed rotation by high-speed motor；Or by rubbing
The multi roll drive mechanism for wiping wheel transmission principle drives the metal bar material high speed rotation.
Preferably, the second level atomising mechanism includes the gentle atomizer of dynamic sealing device；
The dynamic sealing device is used to support the metal bar material and is sealed to the spray chamber；
The aerosolization nozzle is for generating the direction of rotation reverse high speed gas opposite with the metal bar material direction of rotation
Body, the reverse high-speed gas is by the described 1 metal strip breakup of drop at 2~3 molten drops.
Preferably, the aerosolization nozzle is made of total inlet pipe, spiral coil group and coil pipe fixing sleeve；
The coil pipe fixing sleeve and the metal bar material are coaxially disposed, and the total inlet pipe and spiral coil group are fixed on institute
State on coil pipe fixing sleeve, multiple air inlets that the spiral coil group includes respectively with the total inlet pipe connection, the spiral
Multiple gas outlets that coil pipe group includes are distributed in around the coil pipe fixing sleeve；
Pressure is between 3~5Mpa's and speed between the inert gas of 100~300m/s is passed through the total inlet pipe, described
Inert gas is by forming the reverse high-speed gas after the spiral coil group.
It preferably, further include vacuum plant, inertia gas cylinder and powder collecting mechanism；
The vacuum plant is used to vacuumize for the spray chamber, and the inertia gas cylinder is used for the mist after vacuumizing
Change indoor full of inert gas；Wherein, the indoor vacuum degree of atomization reaches 5 × 10-3Pa, the indoor indifferent gas of atomization
Body purity is greater than 99.999%；
The powder collecting mechanism is located at the lower section of the spray chamber, for collecting the metal formed in the spray chamber
Powder.
The embodiment of the invention also provides a kind of rotation electrode milling methods, comprising:
Live spindle drives the rotation of metal bar material speed and melts under the plasma torch that plasma generator occurs and formed
Metal strip drop；
Second level atomising mechanism and the metal bar material are coaxially disposed, and second level atomising mechanism is generated to be rotated with the metal bar material
Contrary reverse high-speed gas, the reverse high-speed gas is by the 1 metal strip breakup of drop at 2~3 metals
Drop.
Preferably, the live spindle drive the metal bar material high speed rotation and plasma generator occur etc. from
Fusing is formed before metal strip drop under sub- torch operation, further includes:
Spray chamber is vacuumized, and is filled with inert gas into the spray chamber；Wherein, the vacuum of the spray chamber
Degree reaches 5 × 10-3The purity of Pa, the indoor inert gas of atomization are greater than 99.999%.
Preferably, for the diameter of the metal bar material between 10-200mm, length is described between 100-2000mm
One end of metal bar material is band conical surface internal thread, and the other end is band conical surface external screw thread；
Two metal bar materials are together by a threaded connection, the remote metal bar material with plasma generator distance
The band conical surface internal thread with conical surface external screw thread and the metal bar material close with plasma generator distance connecting, with plasma
The band conical surface internal thread of the remote metal bar material of generator distance is connect with the live spindle.
Preferably, the live spindle drives the metal bar material with the speed between 10000~150000r/min
Carry out high speed rotation；
The driving of servo feed mechanism is sent into pedestal with the speed axially reciprocating of 0.1-20mm/s, realizes the metal bar
The front end melting compensation of material and continuous fuel replacement.
Preferably, the second level atomising mechanism includes the gentle atomizer of dynamic sealing device；
The dynamic sealing device is used to support the metal bar material and is sealed to the spray chamber；
The aerosolization nozzle is for generating the direction of rotation reverse high speed gas opposite with the metal bar material direction of rotation
Body, the reverse high-speed gas is by the described 1 metal strip breakup of drop at 2~3 molten drops；
The reverse high-speed gas by the 1 metal strip breakup of drop at 2~3 molten drops after, also
Include:
The molten drop is cooling in being atomized indoor inert gas environment, is cooled into ball under surface tension effects
Shape metal powder.
It includes: live spindle, second level mist that the embodiment of the present invention, which provides a kind of rotation electrode fuel pulverizing plant and method, the device,
Change mechanism, plasma generator, metal bar material, spray chamber, feeding pedestal；The feeding pedestal is arranged in the live spindle
Upper end, one end of the live spindle and the metal bar material are coaxially connected；The internal diameter of the second level atomising mechanism is greater than described
The outer diameter of metal bar material, the second level atomising mechanism and the metal bar material are coaxial arrangement, and the second level atomising mechanism is used for
Generate the direction of rotation reverse high-speed gas opposite with the metal bar material direction of rotation, the reverse high-speed gas is by the gold
It is molten drop that the metal strip breakup of drop to be formed is melted in the front end for belonging to bar；One end of the plasma generator extends to
In the spray chamber, the other end is fixed on the outside of the spray chamber.The device compared with the existing technology, in traditional rotation electrode
Secondary-atomizing mechanism is increased on the basis of powder manufacturing apparatus, device at work, make by the reverse gas of secondary-atomizing mechanism high speed rotation
For the strip drop that metal bar material generates under plasma generator effect, second-time breakage is carried out to metal strip drop and is obtained
The metal powder of fine grain.There are the spherical powder produced by the device diameter powders to concentrate on 10~100 μm, thinner powder
Last partial size has widened rotation electrode powder manufacturing apparatus in the application of 3D printing technique field, has the very strong market competitiveness.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the rotation electrode fuel pulverizing plant schematic front view that inventive embodiments provide；
Fig. 2 is the rotation electrode fuel pulverizing plant schematic top plan view that inventive embodiments provide.
Fig. 3 is the partial enlargement diagram of Fig. 1 provided in an embodiment of the present invention；
Fig. 4 is aerosolization nozzle arrangements schematic diagram provided in an embodiment of the present invention.
Fig. 5 is reverse high-speed gas second-time breakage schematic diagram provided in an embodiment of the present invention；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 illustratively shows the rotation electrode fuel pulverizing plant schematic front view of inventive embodiments offer, and Fig. 2 is exemplary
Show inventive embodiments offer rotation electrode fuel pulverizing plant schematic top plan view.
As depicted in figs. 1 and 2, rotation electrode fuel pulverizing plant provided in an embodiment of the present invention specifically includes that servo is sent into machine
Structure 1 is sent into pedestal 2, live spindle 3, metal bar material 4, second level atomising mechanism 5, powder collecting mechanism 6, spray chamber 7, plasma
Generator 8, vacuum plant 9 and inertia gas cylinder 10.
Specifically, as shown in Figure 1, servo feed mechanism 1 is connect with pedestal 2 is sent into, the driving of servo feed mechanism 1 is sent into bottom
Seat 2 is with the speed axially reciprocating of 0.1-20mm/s, and further, the upper end for being sent into pedestal 2, rotation is arranged in live spindle 3
One end and the metal bar material 4 for turning main shaft 3 are coaxially connected, so as to drive metal bar material 4 in axially reciprocating, realize metal
The front end melting compensation of bar 4 and continuous fuel replacement.
In embodiments of the present invention, in order to solve the metal powder partial size of existing rotation electrode powder manufacturing apparatus production compared with
Slightly, the emerging technologies such as metal increasing material manufacturing, thermal spraying can not be fully met to fine grain powder needs of problems.Preferably, at this
Second level atomising mechanism 5 is additionally provided in rotation electrode fuel pulverizing plant, the internal diameter of the second level atomising mechanism 5 is greater than metal bar material 4
Outer diameter, and second level atomising mechanism 5 and metal bar material 4 are coaxially disposed.
In practical applications, the diameter range of metal bar material 4 is between φ 10-200mm, length range between 100~
Between 2000mm, furthermore, live spindle 3 drives metal bar material 4 with the speed high speed between 10000~150000r/min
Rotation, since the thawing power of plasma generator 8 is between 50~500kW, plasma generator 8 transmitting etc. from
Sub- torch acts on 4 end face of metal bar material, and 4 end face of metal bar material is made to melt to form metal liquid film, and further, metal liquid film exists
It throws away to form metal strip drop 11-1 under the high speed rotation centrifugal force effect of metal bar material 4.
In embodiments of the present invention, second level atomising mechanism 5 and metal bar material 4 are coaxially disposed, and second level atomising mechanism 5 can produce
The raw direction of rotation reverse high-speed gas opposite with 4 direction of rotation of metal bar material, the reverse high-speed gas can will be centrifuged masterpiece
Throw away that the metal strip drop 11-1 to be formed is broken to form molten drop 11-2 under.Specifically, reverse high-speed gas can be by 1
A metal strip drop 11-1 is broken into 2~3 molten drop 11-2.
In embodiments of the present invention, one end of plasma generator 8 extends in spray chamber 7, the fixed atomization of the other end
The outside of room 7.It should be noted that in practical applications, plasma generator 8 can be non-diverting camber plasma generator
8, it is also possible to transfer camber plasma generator 8 of the metal bar material 4 as consumable anode.In embodiments of the present invention, reciprocity
The concrete type of ion generator 8 is without limitation.
Specifically, the main packet sliding vane rotary pump of vacuum plant 9, molecular pump and gate valve that the device includes, pass through vacuum plant 9
It may insure that the vacuum degree in spray chamber 7 reaches 5 × 10-3Pa；Inertia gas cylinder 10 is greater than to being filled with purity inside spray chamber 7
Molten drop 11-2 can be carried out spherical powder under an inert atmosphere by 99.999% inertia.
Fig. 3 is the partial enlargement diagram of Fig. 1 provided in an embodiment of the present invention, as shown in figure 3, the embodiment of the present invention provides
Second level atomising mechanism 5 mainly include the gentle atomizer 5-2 of dynamic sealing device 5-1, specifically, dynamic sealing device 5-1 mono-
Aspect guarantees positive pressure inert atmosphere in pulverizing process spray chamber 7, on the other hand provides front end to high-speed rotating metal bar material 4
Support.
Fig. 4 is aerosolization nozzle arrangements schematic diagram provided in an embodiment of the present invention, and Fig. 5 is provided in an embodiment of the present invention inverse
To high-speed gas second-time breakage schematic diagram.In practical applications, aerosolization nozzle 5-2 is by total inlet pipe 5-2-1, spiral coil group
5-2-2 and coil pipe fixing sleeve 5-2-3 composition.Specifically coil pipe fixing sleeve 5-2-3 and metal bar material are coaxially disposed, and are located at metal
The outside of bar, total inlet pipe 5-2-1 and spiral coil group 5-2-2 are fixed on coil pipe fixing sleeve 5-2-3, as shown in figure 4, spiral shell
Respectively with total inlet pipe 5-2-1 connection, spiral coil group 5-2-2 includes more multiple air inlets that capstan pipe group 5-2-2 includes
A gas outlet is distributed in around coil pipe fixing sleeve 5-2-3, i.e., the spiral coil group 5-2-2 communicated with total inlet pipe 5-2-1 is by disk
In pipe fixing sleeve 5-2-3 is wrapped in, further, multiple gas outlets that spiral coil group 5-2-2 includes are uniformly respectively in disk
A circle of pipe fixing sleeve 5-2-3.
In embodiments of the present invention, it can be filled with pressure in total inlet pipe 5-2-1 between 3~5Mpa's and speed is between 100
The inert gas of~300m/s, the inert gas into total inlet pipe 5-2-1 have respectively entered the multiple of spiral coil group 5-2-2
After gas outlet, it will form along the consistent high-speed gas of spiral coil group 5-2-2 export direction.
As shown in figure 5, since coil pipe fixing sleeve 5-2-3 and metal bar material 4 are coaxially disposed, and be arranged in coil pipe fixing sleeve 5-
The direction of rotation of multiple gas outlets of spiral coil group 5-2-2 on 2-3 and the direction of rotation of metal bar material 4 are on the contrary, therefore, spiral shell
The direction of rotation of the high-speed rotating gas of multiple gas outlets outflow of capstan pipe group 5-2-2 can be with 4 high speed rotation of metal bar material
Throw away the direction of rotation for the metal strip drop 11-1 to be formed on the contrary, i.e. by aerosolization nozzle 5-2 generate with metal bar material 4
The opposite reverse high-speed gas in direction of rotation, the reverse high-speed gas act on 4 high speed rotation of metal bar material and throw away the gold to be formed
Belong to strip drop 11-1, so that 1 metal strip drop 11-1 is broken into 2~3 molten drop 11-2.
Further, molten drop 11-2 is cooling in the inert gas environment in spray chamber 7, under surface tension effects
Form globular metallic powder.
Powder collecting mechanism 6 below spray chamber 7 is set, for collecting the globular metallic powder formed in spray chamber 7.
It should be noted that in embodiments of the present invention, one end of metal bar material 4 is band conical surface internal thread, the other end is
The band conical surface external screw thread when being if desired simultaneously placed into two metal bar materials 4 on rotation electrode fuel pulverizing plant, is then sent out with plasma
Band with conical surface external screw thread and with plasma generator 8 apart from close metal bar material 4 of the raw device 8 apart from remote metal bar material 4 is bored
Face internal screw thread is connected, and the band conical surface internal thread with plasma generator 8 apart from remote metal bar material 4 is connect with live spindle 3.
The metal powder of rotation electrode fuel pulverizing plant production provided in an embodiment of the present invention has sphericity height, good fluidity
The good advantage with compressibility, while being realized by the way of the reverse second-time breakage metal powder of high speed rotation gas higher thin
Powder yield.10~100 μm are concentrated on using the powder diameter that the equipment produces, has better meet metal increasing material manufacturing, injection
The demands of the emerging technologies to high-quality fine grain powder such as molding have preferable market prospects and economic benefit.
Rotation electrode fuel pulverizing plant provided in an embodiment of the present invention is introduced in order to clearer, the present invention introduced below is real
The rotation electrode milling method for applying example offer clearer can understand the rotation electrode fuel pulverizing plant by the milling method
Structure and have milling step.
The pulverizing process of rotation electrode fuel pulverizing plant mainly comprises the steps that
Step 101, live spindle 3 drives 4 speed rotation of metal bar material and in the plasma torch of the generation of plasma generator 8
Lower fusing forms metal strip drop 11-1；
Step 102, second level atomising mechanism 5 and the metal bar material 4 are coaxially disposed, and 5 high speed rotation of second level atomising mechanism produces
The raw reverse high-speed gas opposite with 4 direction of rotation of metal bar material, the reverse high-speed gas is by 1 metal strip
Drop 11-1 is broken into 2~3 molten drop 11-2.
Before step 101, need to rotation electrode fuel pulverizing plant carry out vacuum pumping, specifically, to spray chamber 7 into
Row vacuumizes, until the vacuum degree in the spray chamber 7 reaches 5 × 10-3Pa or so, further, the vacuum degree in spray chamber 7
After reaching requirement, need to be filled with inert gas into spray chamber 7, in embodiments of the present invention, the inertia being filled in spray chamber 7
The purity of gas is greater than 99.999%.
It should be noted that in the present invention is implemented, the diameter of metal bar material 4 between 10-200mm, length between
Between 100-2000mm, specifically, one end of metal bar material 4 is band conical surface internal thread, and the other end is band conical surface external screw thread.Specifically
Ground, by need simultaneously two metal bar materials 4 are placed on rotation electrode fuel pulverizing plant when, then with 8 distance of plasma generator
The band conical surface internal thread phase with conical surface external screw thread and with plasma generator 8 apart from close metal bar material 4 of remote metal bar material 4
Connection, the band conical surface internal thread with plasma generator 8 apart from remote metal bar material 4 are connect with live spindle 3.
Before live spindle 3 drives 4 speed rotation of metal bar material, it is also necessary to introduce, the setting of live spindle 3 is being sent into
The upper end of pedestal 2 is sent into pedestal 2 and connect with servo feed mechanism 1；The driving of servo feed mechanism 1 is sent into pedestal 2 with 0.1-
The speed axially reciprocating of 20mm/s is sent into the upper end of pedestal 2 since live spindle 3 is arranged in, and one end of metal bar material 4
It is connected through a screw thread with live spindle 3, therefore, is sent into pedestal 2 when servo feed mechanism 1 drives with the speed axis of 0.1-20mm/s
To when moving back and forth, correspondingly, front end melting compensation and the continuous fuel replacement of metal bar material 4 are realized.
Further, the plasma generator 8 provided in the embodiment of the present invention can produce thawing power in spray chamber 7
Between the plasma torch of 50~500kW.In a step 101, when live spindle 3 drives 4 speed rotation of metal bar material, plasma hair
Raw 8 transmission power of device acts on the end face of metal bar material 4 between the plasma torch of 50~500kW, the end face of metal bar material 4
Fusing forms metal liquid film.Further, since metal bar material 4 is in high speed rotation, the gold of the end face formation of metal bar material 4
Belong to liquid film and forms metal strip drop 11-1 under the action of the centrifugal force.
It should be noted that in a step 101, the driving of servo feed mechanism 1 is sent into pedestal 2 with the speed of 0.1-20mm/s
Axially reciprocating drives the live spindle 3 being connected with the feeding pedestal 2 to move back and forth, and live spindle 3 drives metal
Bar 4 carries out high speed rotation with the speed between 10000~150000r/min, realizes that the front end of the metal bar material 4 exists
Fusing forms metal strip drop 11-1 under the plasma torch that the plasma generator 8 generates.
In a step 102, with metal bar material 4 be coaxially disposed second level atomising mechanism 5 mainly include dynamic sealing device 5-1 and
Aerosolization nozzle 5-2.On the one hand dynamic sealing device 5-1 guarantees positive pressure inert atmosphere in pulverizing process spray chamber 7, on the other hand
Front support is provided to high-speed rotating metal bar material 4；Aerosolization nozzle 5-2 and metal bar material 4 are coaxially disposed.
Specifically, aerosolization nozzle 5-2, should for generating the reverse high-speed gas opposite with 4 direction of rotation of metal bar material
Reverse high-speed gas acts on 4 high speed rotation of metal bar material and throws away the metal strip drop 11-1 to be formed, so that 1 metal strip
Drop 11-1 is broken into 2~3 molten drop 11-2.Further, inert atmosphere ring of the molten drop 11-2 in spray chamber 7
It is cooling in border, globular metallic powder is cooled under surface tension effects.Powder collecting mechanism below spray chamber 7 is set
6 collect the metal powder formed in spray chamber 7.
Below by taking 1~embodiment of embodiment 3 as an example, the detailed process of rotation electrode fuel pulverizing plant powder is introduced again:
Embodiment 1
Step 201, high purity metal bar 4 is by being machined into circular metal bar 4, the diameter of metal bar material 4Length is 100mm, and 4 one end of metal bar material is band conical surface internal thread, and one end is band conical surface external screw thread.
Step 202, one end of metal bar material 4 is band conical surface internal thread, and the other end is band conical surface external screw thread.Specifically, will
When needing simultaneously to be placed into two metal bar materials 4 on rotation electrode fuel pulverizing plant, then with plasma generator 8 apart from remote gold
The band conical surface internal thread with conical surface external screw thread and with plasma generator 8 apart from close metal bar material 4 for belonging to bar 4 is connected,
Band conical surface internal thread with plasma generator 8 apart from remote metal bar material 4 is connect with live spindle 3.
Step 203, vacuum plant 9 is mainly made of sliding vane rotary pump, molecular pump and gate valve, guarantees mist by vacuum plant 9
The vacuum degree changed in room 7 reaches 5 × 10-3Pa。
Step 204, inertia gas cylinder 10 is to being filled with inert gas of the purity greater than 99.999% inside spray chamber 7 to positive pressure
0.04Mpa meets the inert ambient environment of powder by atomization forming technology.
Step 205, live spindle 3 drives metal bar material 44 with 150000r/min high speed rotation.
Step 206, the transmitting of plasma generator 8 plasma torch acts on 4 end face of metal bar material, its fusing is made to form gold
Belong to liquid film.Liquid film throws away to form metal strip drop 11-1 under the effect of bar high speed rotation centrifugal force.
Step 207, aerosolization nozzle 5-2 generates direction of rotation V2The high-speed gas of=50m/s, the rotation with metal bar material 4
Turn direction V1=50m/s is opposite.Reverse 4 high speed rotation of high-speed gas action metals bar throws away the metal strip drop to be formed
11-1 makes it by 1 breakup of drop at 2~3 molten drop 11-2.
Step 208, molten drop 11-2 is cooling in the inert ambient environment in spray chamber 7, under surface tension effects
It is cooled into globular metallic powder.
Step 209, the driving of servo feed mechanism 1 is sent into pedestal 2 and realizes metal with the speed axially reciprocating of 1.2mm/s
The front end melting compensation of bar 4 and continuous fuel replacement.
Embodiment 2
Step 301, high purity metal bar 4 is by being machined into circular metal bar 4, the diameter of metal bar material 4For length in 1000mm, 4 one end of metal bar material is band conical surface internal thread, and one end is band conical surface external screw thread.
Step 302, one end of metal bar material 4 is band conical surface internal thread, and the other end is band conical surface external screw thread.Specifically, will
When needing simultaneously to be placed into two metal bar materials 4 on rotation electrode fuel pulverizing plant, then with plasma generator 8 apart from remote gold
The band conical surface internal thread with conical surface external screw thread and with plasma generator 8 apart from close metal bar material 4 for belonging to bar 4 is connected,
Band conical surface internal thread with plasma generator 8 apart from remote metal bar material 4 is connect with live spindle 3.
Step 303, vacuum plant 9 is mainly made of sliding vane rotary pump, molecular pump and gate valve, guarantees mist by vacuum plant 9
The vacuum degree changed in room 7 reaches 5 × 10-3Pa。
Step 304, inertia gas cylinder 10 is to being filled with inert gas of the purity greater than 99.999% inside spray chamber 7 to positive pressure
0.06Mpa meets the inert ambient environment of powder by atomization forming technology.
Step 305, live spindle 3 drives metal bar material 44 with 50000r/min high speed rotation.
Step 306, the transmitting of plasma generator 8 plasma torch acts on 4 end face of metal bar material, its fusing is made to form gold
Belong to liquid film.Liquid film throws away to form metal strip drop 11-1 under the effect of bar high speed rotation centrifugal force.
Step 307, aerosolization nozzle 5-2 generates direction of rotation V2The high-speed gas of=300m/s, the rotation with metal bar material 4
Turn direction V1=100m/s is opposite.Reverse 4 high speed rotation of high-speed gas action metals bar throws away the metal strip drop to be formed
11-1 makes it by 1 breakup of drop at 2~3 molten drop 11-2.
Step 308, molten drop 11-2 is cooling in the inert ambient environment in spray chamber 7, under surface tension effects
It is cooled into globular metallic powder.
Step 309, the driving of servo feed mechanism 1 is sent into pedestal 2 and realizes metal with the speed axially reciprocating of 1.2mm/s
The front end melting compensation of bar 4 and continuous fuel replacement.
Embodiment 3
Step 401, high purity metal bar 4 is by being machined into circular metal bar 4, the diameter of metal bar material 4For length in 2000mm, 4 one end of metal bar material is band conical surface internal thread, and one end is band conical surface external screw thread.
Step 402, one end of metal bar material 4 is band conical surface internal thread, and the other end is band conical surface external screw thread.Specifically, will
When needing simultaneously to be placed into two metal bar materials 4 on rotation electrode fuel pulverizing plant, then with plasma generator 8 apart from remote gold
The band conical surface internal thread with conical surface external screw thread and with plasma generator 8 apart from close metal bar material 4 for belonging to bar 4 is connected,
Band conical surface internal thread with plasma generator 8 apart from remote metal bar material 4 is connect with live spindle 3.
Step 403, vacuum plant 9 is mainly made of sliding vane rotary pump, molecular pump and gate valve, guarantees mist by vacuum plant 9
The vacuum degree changed in room 7 reaches 5 × 10-3Pa。
Step 404, inertia gas cylinder 10 is to being filled with inert gas of the purity greater than 99.999% inside spray chamber 7 to positive pressure
0.05Mpa meets the inert ambient environment of powder by atomization forming technology.
Step 405, live spindle 3 drives metal bar material 44 with 20000r/min high speed rotation.
Step 406, the transmitting of plasma generator 8 plasma torch acts on 4 end face of metal bar material, its fusing is made to form gold
Belong to liquid film.Liquid film throws away to form metal strip drop 11-1 under the effect of bar high speed rotation centrifugal force.
Step 407, aerosolization nozzle 5-2 generates direction of rotation V2The high-speed gas of=200m/s, the rotation with metal bar material 4
Turn direction V1=80m/s is opposite.Reverse 4 high speed rotation of high-speed gas action metals bar throws away the metal strip drop to be formed
11-1 makes it by 1 breakup of drop at 2~3 molten drop 11-2.
Step 408, molten drop 11-2 is cooling in the inert ambient environment in spray chamber 7, under surface tension effects
It is cooled into globular metallic powder.
Step 409, the driving of servo feed mechanism 1 is sent into pedestal 2 and realizes metal with the speed axially reciprocating of 1.2mm/s
The front end melting compensation of bar 4 and continuous fuel replacement.
In conclusion the embodiment of the present invention provides a kind of rotation electrode fuel pulverizing plant and method, which includes: rotation master
Axis, second level atomising mechanism, plasma generator, metal bar material, spray chamber are sent into pedestal；The live spindle is arranged described
It is sent into the upper end of pedestal, one end of the live spindle and the metal bar material are coaxially connected；The second level atomising mechanism it is interior
Diameter is greater than the outer diameter of the metal bar material, and the second level atomising mechanism and the metal bar material are coaxial arrangement, the second level mist
Change mechanism for generating the direction of rotation reverse high-speed gas opposite with the metal bar material direction of rotation, the reverse high speed gas
It is molten drop that the metal strip breakup of drop to be formed is melted in the front end of the metal bar material by body；The plasma generator
One end extends in the spray chamber, and the other end is fixed on the outside of the spray chamber.The device compared with the existing technology, in tradition
Rotation electrode powder manufacturing apparatus on the basis of increase secondary-atomizing mechanism, device at work, secondary-atomizing mechanism high speed rotation
Reverse gas acts on the strip drop that metal bar material generates under plasma generator effect, carries out two to metal strip drop
Secondary be crushed obtains the metal powder of fine grain.There are the spherical powder produced by the device diameter powders to concentrate on 10~100 μ
M, thinner powder diameter have widened rotation electrode powder manufacturing apparatus in the application of 3D printing technique field, have had very strong market competing
Strive power.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
Usable storage medium includes but is not limited to the upper computer program product implemented such as magnetic disk storage, CD-ROM, optical memory
Form.
The present invention be referring to according to the method for the embodiment of the present invention, the flow chart of device systems and computer program product
And/or block diagram describes.It should be understood that each process in flowchart and/or the block diagram can be realized by computer program instructions
And/or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer programs to refer to
Enable the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate
One machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizing
The device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of rotation electrode fuel pulverizing plant characterized by comprising live spindle, second level atomising mechanism, plasma occur
Device, metal bar material, spray chamber are sent into pedestal；
The upper end for being sent into pedestal is arranged in the live spindle, and one end of the live spindle and the metal bar material are coaxial
Connection；
The internal diameter of the second level atomising mechanism is greater than the outer diameter of the metal bar material, the second level atomising mechanism and the metal bar
Material is coaxial arrangement, and the second level atomising mechanism is used to generate reverse opposite with the metal bar material direction of rotation in direction of rotation
High-speed gas, it is metal that the metal strip breakup of drop to be formed is melted in the front end of the metal bar material by the reverse high-speed gas
Drop；
One end of the plasma generator extends in the spray chamber, and the other end is fixed on the outside of the spray chamber.
2. device as described in claim 1, which is characterized in that it further include servo feed mechanism, the servo feed mechanism
One end is connected with the feeding pedestal, for driving the feeding pedestal axially reciprocating；
The live spindle drives the metal bar material high speed rotation, realizes that the front end of the metal bar material is sent out in the plasma
Fusing forms metal strip drop under the plasma torch that raw device generates；
Wherein, the live spindle directly drives the metal bar material high speed rotation by high-speed motor；Or pass through friction pulley
The multi roll drive mechanism of transmission principle drives the metal bar material high speed rotation.
3. device as described in claim 1, which is characterized in that the second level atomising mechanism includes dynamic sealing device and aerosolization
Nozzle；
The dynamic sealing device is used to support the metal bar material and is sealed to the spray chamber；
The aerosolization nozzle is for generating the direction of rotation reverse high-speed gas opposite with the metal bar material direction of rotation, institute
Reverse high-speed gas is stated by the described 1 metal strip breakup of drop into 2~3 molten drops.
4. device as claimed in claim 3, which is characterized in that the aerosolization nozzle by total inlet pipe, spiral coil group and
Coil pipe fixing sleeve composition；
The coil pipe fixing sleeve and the metal bar material are coaxially disposed, and the total inlet pipe and spiral coil group are fixed on the disk
On pipe fixing sleeve, multiple air inlets that the spiral coil group includes respectively with the total inlet pipe connection, the spiral coil
Multiple gas outlets that group includes are distributed in around the coil pipe fixing sleeve；
Pressure is between 3~5Mpa's and speed between the inert gas of 100~300m/s is passed through the total inlet pipe, the inertia
Gas is by forming the reverse high-speed gas after the spiral coil group.
5. device as described in claim 1, which is characterized in that further include vacuum plant, inertia gas cylinder and powder collecting mechanism；
The vacuum plant is used to vacuumize for the spray chamber, and the inertia gas cylinder is used for the spray chamber after vacuumizing
It is interior to be full of inert gas；Wherein, the indoor vacuum degree of atomization reaches 5 × 10-3Pa, the indoor inert gas of atomization are pure
Degree is greater than 99.999%；
The powder collecting mechanism is located at the lower section of the spray chamber, for collecting the metal powder formed in the spray chamber
End.
6. a kind of rotation electrode milling method characterized by comprising
Live spindle driving metal bar material speed rotates and fusing forms metal under the plasma torch that plasma generator occurs
Strip drop；
Second level atomising mechanism and the metal bar material are coaxially disposed, and second level atomising mechanism generates and the metal bar material direction of rotation
Opposite reverse high-speed gas, the reverse high-speed gas is by the 1 metal strip breakup of drop at 2~3 molten drops.
7. method as claimed in claim 6, which is characterized in that the live spindle drives the metal bar material high speed rotation simultaneously
Before fusing forms metal strip drop under the plasma torch operation that plasma generator occurs, further includes:
Spray chamber is vacuumized, and is filled with inert gas into the spray chamber；Wherein, the vacuum degree of the spray chamber reaches
To 5 × 10-3The purity of Pa, the indoor inert gas of atomization are greater than 99.999%.
8. method as claimed in claim 6, which is characterized in that the diameter of the metal bar material is long between 10-200mm
For degree between 100-2000mm, one end of the metal bar material is band conical surface internal thread, and the other end is band conical surface external screw thread；
Two metal bar materials are together by a threaded connection, the band of the remote metal bar material with plasma generator distance
The band conical surface internal thread of conical surface external screw thread and the metal bar material close with plasma generator distance is connect, and is occurred with plasma
The band conical surface internal thread of the remote metal bar material of device distance is connect with the live spindle.
9. method as claimed in claim 6, which is characterized in that the live spindle drive the metal bar material between
Speed between 10000~150000r/min carries out high speed rotation；
The servo feed mechanism driving is sent into pedestal with the speed axially reciprocating of 0.1-20mm/s, realizes the metal bar
The front end melting compensation of material and continuous fuel replacement.
10. method as claimed in claim 6, which is characterized in that the second level atomising mechanism includes dynamic sealing device and aerosol
Change nozzle；
The dynamic sealing device is used to support the metal bar material and is sealed to the spray chamber；
The aerosolization nozzle is for generating the direction of rotation reverse high-speed gas opposite with the metal bar material direction of rotation, institute
Reverse high-speed gas is stated by the described 1 metal strip breakup of drop into 2~3 molten drops；
The reverse high-speed gas by the 1 metal strip breakup of drop at 2~3 molten drops after, further includes:
The molten drop is cooling in being atomized indoor inert gas environment, and spherical gold is cooled under surface tension effects
Belong to powder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598290.9A CN109465463A (en) | 2018-12-25 | 2018-12-25 | A kind of rotation electrode fuel pulverizing plant and method |
| CN201910369625.8A CN109940167B (en) | 2018-12-25 | 2019-05-06 | Rotary electrode powder making device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598290.9A CN109465463A (en) | 2018-12-25 | 2018-12-25 | A kind of rotation electrode fuel pulverizing plant and method |
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| CN201811598290.9A Pending CN109465463A (en) | 2018-12-25 | 2018-12-25 | A kind of rotation electrode fuel pulverizing plant and method |
| CN201910369625.8A Active CN109940167B (en) | 2018-12-25 | 2019-05-06 | Rotary electrode powder making device and method |
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| CN109940167A (en) | 2019-06-28 |
| CN109940167B (en) | 2022-03-01 |
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