CN102581293B - Synchronous rotation electrode flour mill - Google Patents
Synchronous rotation electrode flour mill Download PDFInfo
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- CN102581293B CN102581293B CN 201210069678 CN201210069678A CN102581293B CN 102581293 B CN102581293 B CN 102581293B CN 201210069678 CN201210069678 CN 201210069678 CN 201210069678 A CN201210069678 A CN 201210069678A CN 102581293 B CN102581293 B CN 102581293B
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- circular disk
- rotating circular
- spray chamber
- electrode
- rotary disc
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Abstract
The invention discloses a synchronous rotation electrode powder making machine, which comprises a motor, a coupler and a main shaft. An output shaft of the motor is connected with one end of the main shaft through the coupler. The synchronous rotation electrode flour mill is characterized in also comprising an atomizing chamber, a first rotary disc, a second rotary disc, a tungsten electrode and an anode metal rod; the first rotary disc, the second rotary disc, the tungsten electrode and the anode metal rod are arranged in the atomizing chamber; the other end of the main shaft is connected with the first rotary disc through the atomizing chamber; the tungsten electrode is arranged at non-center position of the first rotary disc; the second rotary disc keeps synchronous rotation with the first rotary disc; the anode metal rod is arranged at non-center position of the second rotary disc; the anode metal rod is opposite to the tungsten electrode; the tungsten electrode is connected with a negative electrode of a power supply; the anode metal rod is connected with a positive electrode of the power supply; and the atomizing chamber is connected with a vacuum pumping device. In the invention, the problems that the finished product ratio of spherical metal powder is low and the particle size of the powder is bigger are solved; and the synchronous rotation electrode powder making machine which can obtain spherical metal powder with tiny particle size under common rotating speed is provided.
Description
Technical field
The present invention relates to the preparing technical field of globular metallic powder, particularly relate to a kind of synchronous rotating electrode milling machine.
Background technology
Now, the centrifugal atomizing method is one of preparation method of globular metallic powder, and it can keep metallochemistry character constant, and the cleanliness factor of the yield rate of globular metallic powder and finished product is all than higher simultaneously.The centrifugal atomizing method relies on power source special to produce electric arc between anode and negative electrode; the anode stub end face is melted; anode is around its axle center high-speed rotation; produced very strong centrifugal force; the anode metal that will be melted by arc heat throws away with the form of droplet; cooling rapidly is frozen into spherical powder under the protective gas environment of certain pressure.But because the anode metal bar is in shaft core position in this structure, though the anode metal rod revolves at a high speed, but the linear velocity at anode metal rod pivot place is zero, thereby cause the liquid metal of this place's fusing not to be subjected to centrifugal action, can seriously reduce shaping and the yield rate of globular metallic powder thus.
Hard arc is with the anode metal plane rod end fusing of rotation simultaneously; under action of centrifugal force; the liquid metal film of fusing flows to the edge of bar end face; because capillary effect; liquid film can not throw away from the bar end face immediately, and when having only the suffered centrifugal force F of the drop that is accumulated into when the metal liquid film greater than molten metal surface tension force, drop could break away from the metal bar end face; and enter in the inert protective gas with certain speed and to cool off, be cured as the globular metallic powder particle.Because centrifugal force F=m ω
2The quality of r(m-motlten metal droplet, quality is more little, granularity is also more little), when centrifugal force F is constant, if when expecting Metal Ball sprills than small grain size, just must increases substantially the rotating speed of anode metal rod, or strengthen the radius of metal bar spinning.For example patent ZL200820029773.2 utilizes plasma rotating electrode to prepare globular metallic powder, must adopt high-speed electric expreess locomotive to realize the significantly raising of metal bar rotating speed, but adopt this kind high-speed equipment, the production cost of whole device is higher, has brought bigger burden to enterprise.
Summary of the invention
Lower in order to solve in the prior art globular metallic powder yield rate, and the bigger problem of powder size, the invention provides a kind ofly under the situation of ordinary rotational speed, can obtain the synchronous rotating electrode milling machine of the minimum globular metallic powder of granularity.
In order to address the above problem, the technical solution used in the present invention is:
A kind of synchronous rotating electrode milling machine, comprise motor, shaft coupling and main shaft, the output shaft of described motor is connected with an end of main shaft by shaft coupling, it is characterized in that: also comprise spray chamber and be arranged on the first interior rotating circular disk of spray chamber, second rotating circular disk, tungsten electrode and anode metal rod, the other end of described main shaft passes spray chamber and is connected with first rotating circular disk, the position in the non-center of circle of first rotating circular disk is provided with tungsten electrode, described second rotating circular disk is connected with first rotational circle and keeps rotation synchronously, the position in the non-center of circle of second rotating circular disk is provided with the anode metal rod relative with tungsten electrode, described tungsten electrode is connected with power cathode, described anode metal rod is connected with positive source, and described spray chamber is connected with vaccum-pumping equipment.
Aforesaid a kind of synchronous rotating electrode milling machine, it is characterized in that: also comprise feed mechanism, described feed mechanism comprises push rod, slide block, lead screw, shaft coupling and stepper motor, described push rod one end passes spray chamber and is connected with second rotating circular disk, the described push rod other end is connected with slide block, described lead screw is passed slide block, and an end of lead screw is connected with the stepper motor output shaft by shaft coupling.
Aforesaid a kind of synchronous rotating electrode milling machine is characterized in that: described spray chamber adopts the double sandwich structure, passes through cooling circulating water in interlayer.
Aforesaid a kind of synchronous rotating electrode milling machine is characterized in that: the position that described main shaft passes spray chamber is provided with the V-type dynamic seal ring.
Aforesaid a kind of synchronous rotating electrode milling machine is characterized in that: the position that described push rod passes spray chamber is provided with the V-type dynamic seal ring.
Aforesaid a kind of synchronous rotating electrode milling machine, it is characterized in that: first rotating circular disk is provided with splined shaft, and second rotating circular disk is provided with the hub splines relative with the splined shaft position, and described splined shaft is connected with hub splines.
Aforesaid a kind of synchronous rotating electrode milling machine is characterized in that: insulation processing is adopted at described first rotating circular disk position that is connected with splined shaft.
Aforesaid a kind of synchronous rotating electrode milling machine is characterized in that: insulation processing is adopted at described second rotating circular disk position that is connected with hub splines.
Aforesaid a kind of synchronous rotating electrode milling machine, it is characterized in that: described spray chamber pours inert gas by pipeline.
The invention has the beneficial effects as follows: among the present invention the anode metal rod is fixed on disk border, this structure is compared with the structure that the anode metal rod is in pivot, there is eccentric throw r in the anode metal rod, for integral body moves in a circle around the axle center, therefore anode metal plane rod end pivot place linear velocity is zero defective before having eliminated effectively, has improved the globular metallic powder yield rate.When rotating speed one timing, regulate the radius of anode metal rod circular motion simultaneously, make radius r more big, centrifugal force is also just more big, and it is more thin that the end face melt film becomes, and the quality of motlten metal droplet is also just more little, so the granularity of Metal Ball sprills is more little.In addition because eccentric throw r has controllability, requirement according to required metal powder granulates degree, by changing the anode metal rod around the radius of disc axis, the product that can obtain to meet the demands just, avoided the requirement to metal bar raw material diameter, effectively reduce the rotating speed of electrode, can adopt the ordinary rotational speed motor to realize obtaining the purpose of superfine Metal Ball sprills.This device can obtain good product quality, effectively improves qualification rate and the production efficiency of product, has also reduced production cost and plant maintenance simultaneously and has dropped into.
Description of drawings
Fig. 1 is the structural representation of the synchronous rotating electrode milling machine of the present invention.
Introduce Reference numeral of the present invention down below.
1---motor 2---shaft coupling
3---main shafts 4---, first rotating circular disk
5---V-type dynamic seal ring 6---tungsten electrode
7---anode metal rod 8---splined shaft
9---hub splines 10---, second rotating circular disk
11---V-type dynamic seal ring 12---push rod
13---slide block 14---sliding screw
15---shaft coupling 16---stepper motor
17---spray chamber.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of synchronous rotating electrode milling machine comprises motor 1, shaft coupling 2, main shaft 3, spray chamber 17 and first rotating circular disk 4, second rotating circular disk 10, tungsten electrode 6 and the anode metal rod 7 that are arranged in the spray chamber 17.The output shaft of motor 1 is connected with an end of main shaft 3 by shaft coupling 2.The other end of main shaft 3 passes spray chamber 17 and is connected with first rotating circular disk 4, first rotating circular disk 4 is provided with splined shaft 8, second rotating circular disk 10 is provided with the hub splines 9 relative with splined shaft 8 positions, and splined shaft 8 is connected with hub splines 9 and keeps first rotating circular disk 4 and second rotating circular disk 10 to rotate synchronously.The position in first rotating circular disk, the 4 non-centers of circle is provided with tungsten electrode 6, the position in second rotating circular disk, the 10 non-centers of circle is provided with the anode metal rod 7 relative with tungsten electrode 6, and the eccentric arm r of tungsten electrode 6 and anode metal rod 7 can adjust by first rotating circular disk 4, second rotating circular disk 10 respectively.Tungsten electrode 6 is connected with power cathode, and anode metal rod 7 is connected with positive source.It should be noted that between first rotating circular disk 4 and second rotating circular disk 10 and must keep high-insulation; so at splined shaft 8 and first rotating circular disk 4; hub splines 9 carries out insulation processing with the position that second rotating circular disk 10 is connected; insulation sleeve etc. is installed; carry out the double insulation protection, prevent that short circuit from taking place.
Feed for convenience of anode metal rod 7, this device also is provided with feed mechanism, feed mechanism comprises push rod 12, slide block 13, lead screw 14, shaft coupling 15 and stepper motor 16, push rod 12 1 ends pass spray chamber 17 and are connected with second rotating circular disk 10, push rod 12 other ends are connected with slide block 13, lead screw 14 is passed slide block 13, and an end of lead screw 14 is connected with stepper motor 16 output shafts by shaft coupling 15.Stepper motor 16 drives sliding screws 14 by shaft coupling 15 and drags slide block 13, and then the movement of control push rod 12, finishes sending to of anode metal rod 7, guarantees the distance between tungsten electrode 6 and anode metal rod 7 end faces, the stablizing of pilot arc.The heat that electric arc produces makes the fusing of anode metal rod 7 end faces, and under rotating at a high speed, motlten metal is assembled by centrifugal action, and final the disengaging flies out, and cooling becomes metal powder granulates in spray chamber 17.
For the chemical property that guarantees metal dust is stablized, product is pure, spray chamber 17 must keep the seal of height, therefore select high temperature resistant V-type dynamic seal ring 5 and V-type dynamic seal ring 11 for use, encapsulation process is carried out at the position that main shaft 3 and push rod 12 are entered spray chamber 17 respectively.Simultaneously, spray chamber 17 is connected with vaccum-pumping equipment, is evacuated earlier during work; charging into inert gas then, as argon gas, helium etc., both had been protective gas; can be the body of heater cooling again, and utilize the strong convection effect of protective gas that metal powder granulates is cooled off.In order to strengthen the cooling effect of spray chamber 17, therefore spray chamber 17 shells adopt the double sandwich structural design, be connected with cooling circulating water in the interlayer, obtain favorable cooling effect, can make like this to keep technology temperature required in the spray chamber 17 always, make the metal liquid cooled and solidified moulding rapidly under the environment of certain pressure that flies out at a high speed.
Operation principle of the present invention: tungsten electrode 6 links to each other with power cathode, and anode metal rod 7 links to each other with positive source.When producing hard arc between two electrodes, 7 fusings of consumable metal electrode, because anode consumable metal bar 7 rotates around main shaft 3 centers at first rotating circular disk, 10 edges, produce strong centrifugal force, the fused solution metal is under strong action of centrifugal force, being thrown out of becomes tiny molten drop, is subjected to the forced convertion cooling of high speed inert gas flow, is rapidly solidificated into the spherical particle powder.Adopt that structure of the present invention and measure can obtain that chemical property is stable, the metal powder granulates of high purity, uniform granularity, reduced plant maintenance, improved production efficiency, reduced production cost, more energy-conserving and environment-protective.
More than show and described basic principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. synchronous rotating electrode milling machine, comprise motor, first shaft coupling and main shaft, the output shaft of described motor is connected with an end of main shaft by first shaft coupling, it is characterized in that: also comprise spray chamber and be arranged on the first interior rotating circular disk of spray chamber, second rotating circular disk, tungsten electrode and anode metal rod, the other end of described main shaft passes spray chamber and is connected with first rotating circular disk, the position in the non-center of circle of first rotating circular disk is provided with tungsten electrode, described second rotating circular disk and first rotational circle keep rotation synchronously, the position in the non-center of circle of second rotating circular disk is provided with the anode metal rod relative with tungsten electrode, described tungsten electrode is connected with power cathode, described anode metal rod is connected with positive source, described spray chamber is connected with vaccum-pumping equipment, first rotating circular disk is provided with splined shaft, second rotating circular disk is provided with the hub splines relative with the splined shaft position, described splined shaft is connected with hub splines, insulation processing, described second rotating circular disk position employing insulation processing that is connected with hub splines is adopted at described first rotating circular disk position that is connected with splined shaft.
2, a kind of synchronous rotating electrode milling machine according to claim 1, it is characterized in that: also comprise feed mechanism, described feed mechanism comprises push rod, slide block, lead screw, second shaft coupling and stepper motor, described push rod one end passes spray chamber and is connected with second rotating circular disk, the described push rod other end is connected with slide block, described lead screw is passed slide block, and an end of lead screw is connected with the stepper motor output shaft by second shaft coupling.
3, a kind of synchronous rotating electrode milling machine according to claim 2 is characterized in that: described spray chamber adopts the double sandwich structure, passes through cooling circulating water in interlayer.
4, a kind of synchronous rotating electrode milling machine according to claim 3, it is characterized in that: the position that described main shaft passes spray chamber is provided with the V-type dynamic seal ring.
5, a kind of synchronous rotating electrode milling machine according to claim 4, it is characterized in that: the position that described push rod passes spray chamber is provided with the V-type dynamic seal ring.
6, a kind of synchronous rotating electrode milling machine according to claim 5, it is characterized in that: described spray chamber charges into inert gas by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210069678 CN102581293B (en) | 2012-03-16 | 2012-03-16 | Synchronous rotation electrode flour mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210069678 CN102581293B (en) | 2012-03-16 | 2012-03-16 | Synchronous rotation electrode flour mill |
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| CN102581293A CN102581293A (en) | 2012-07-18 |
| CN102581293B true CN102581293B (en) | 2013-07-03 |
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| CN 201210069678 Expired - Fee Related CN102581293B (en) | 2012-03-16 | 2012-03-16 | Synchronous rotation electrode flour mill |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600085A (en) * | 2013-09-12 | 2014-02-26 | 苏州米莫金属科技有限公司 | Novel powder metallurgy powder processing device |
| CN103962567B (en) * | 2014-05-31 | 2015-10-21 | 金堆城钼业股份有限公司 | A kind of preparation method of spherical molybdenum powder and equipment |
| CN104325146B (en) * | 2014-11-24 | 2017-07-18 | 西安欧中材料科技有限公司 | Plasma rotating electrode powder apparatus for feeding |
| CN106001593B (en) * | 2016-07-07 | 2017-03-08 | 四川天塬增材制造材料有限公司 | Automatic feeding device and its using method for plasma rotating electrode powder |
| CN108941594A (en) * | 2018-08-07 | 2018-12-07 | 西安赛隆金属材料有限责任公司 | A kind of plasma rotating electrode milling method and device based on PREP |
| CN115283683B (en) * | 2022-07-01 | 2023-08-01 | 南京尚吉增材制造研究院有限公司 | Preparation method and system of high sphericity and low oxygen increment titanium alloy powder |
| CN115608998B (en) * | 2022-12-16 | 2023-03-21 | 西安赛隆增材技术股份有限公司 | Ultrahigh-rotating-speed shaft large-current stable transmission device and application method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3784656A (en) * | 1971-12-03 | 1974-01-08 | Whittaker Corp | Method of producing spherical powder by eccentric electrode rotation |
| JPH05230508A (en) * | 1992-02-24 | 1993-09-07 | Kobe Steel Ltd | Device for continuously feeding consumable electrode rod in rotary electrode-type metal powder producing device |
| CN2661343Y (en) * | 2003-11-17 | 2004-12-08 | 王志平 | Two-way type electric-arc metal nanometer-powder preparing apparatus |
| CN201223944Y (en) * | 2008-07-18 | 2009-04-22 | 张建利 | Plasma rotating electrode pulverizing machine |
| CN101927351A (en) * | 2010-01-15 | 2010-12-29 | 张建利 | Method for preparing high temperature alloy GH 4169 metal globule by utilizing auxiliary plasma rotation electrode |
| CN201999729U (en) * | 2011-03-09 | 2011-10-05 | 徐州浩通新材料科技股份有限公司 | Device utilizing submerge arc to efficiently produce arc gas |
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