CN203853547U - Equipment for manufacturing spherical molybdenum powder - Google Patents
Equipment for manufacturing spherical molybdenum powder Download PDFInfo
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- CN203853547U CN203853547U CN201420288850.1U CN201420288850U CN203853547U CN 203853547 U CN203853547 U CN 203853547U CN 201420288850 U CN201420288850 U CN 201420288850U CN 203853547 U CN203853547 U CN 203853547U
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Abstract
The utility model discloses equipment for manufacturing spherical molybdenum powder. The equipment comprises a powder cooling tank with an opening in the middle of the upper end, a reactor arranged at the position of the opening in the middle of the upper end of the powder cooling tank and a powder collecting tank arranged below the powder cooling tank. The reactor comprises a reaction cavity with an opening in the lower end, an insulation water cooling jacket horizontally arranged on the reaction cavity and a molybdenum disc electrode arranged in the reaction cavity, the upper end of the reaction cavity is provided with a blowing gas pipeline communicated with the interior of the reaction cavity, one end of the insulation water cooling jacket penetrates through the reaction cavity and is arranged in the reaction cavity, and the other end of the insulation water cooling jacket is arranged outside the reaction cavity. The equipment is simple in structure, reasonable in design and easy and convenient to operate, the discharging molten technology is adopted to manufacture the spherical molybdenum powder, the molybdenum powder spherizing efficiency is greatly improved, cost is reduced, no special requirement for the raw material molybdenum powder exists, and the equipment is suitable for large-scale production.
Description
Technical field
The utility model belongs to powder metallurgy powder spheronization techniques field, is specifically related to a kind of equipment of preparing spherical molybdenum powder.
Background technology
Molybdenum goods and molybdenum group alloy material are mainly to prepare by the method for powder metallurgy, and the quality of molybdenum powder is a key link, and its physicochemical property becomes the key factor that affects molybdenum product quality.Common molybdenum powder granularity and apparent density be little, there is no mobility, powder microscopic appearance is irregular, is not suitable for preparing high-quality molybdenum goods and molybdenum group alloy material.At aspects such as precise electronic device, clean nearly shaping, efficient sprayings, cannot be competent at especially.
Granulation is to promote molybdenum powder physical property, widens the current techique means in use field.Main molybdenum powder granulating technique has high temperature comminution granulation, atomization comminution granulation, plasma spheroidization method etc.Wherein best with the prepared molybdenum powder performance of plasma spheroidization method, it is of uniform size spherical that molybdenum powder particle is, and apparent density can reach 6.0g/cm
3above, below Hall stream scooter 15s/50g.Plasma spheroidization method is the high temperature utilizing more than the thousands of degree of plasma, by aspheric molybdenum powder particle send into etc. in vitro in, particle surface or integral body can be rendered as molten condition becomes molten drop, it is spherical that the surface tension of molten drop becomes particle, the in vitro rear cooling contractions such as molten drop leaves become spherical, finally obtain spherical molybdenum powder.How common molybdenum powder being sent into plasma and effectively being collected is the difficult point of plasma spheroidization method, and it is narrow as far as possible that the former grain of General Requirements molybdenum powder should have certain mobility, size distribution, otherwise cannot complete nodularization process or efficiency is very low.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and a kind of equipment of preparing spherical molybdenum powder is provided.Device structure of the present utility model is simple; reasonable in design; easy and simple to handle; by molybdenum disk electrode and molybdenum bar base are set, after energising, between molybdenum disk electrode and molybdenum bar base, discharge, make to form spherical molybdenum powder after the electric discharge melting of molybdenum bar base end; greatly improved the efficiency of molybdenum powder nodularization; reduced cost, and raw material molybdenum powder has not been had to specific (special) requirements, suitability for scale production.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of equipment of preparing spherical molybdenum powder, it is characterized in that, comprise the powder cooling tank of upper center opening and be installed on the reactor of powder cooling tank upper center aperture position, and the powder collection tank that is arranged at powder cooling tank below, described reactor comprises the reaction cavity of lower ending opening, level is installed on the insulated water-cooling chuck on reaction cavity and is arranged at the molybdenum disk electrode of reaction cavity inside, the upper end of described reaction cavity is provided with the purge gas pipeline being connected with reaction cavity inside, one end of described insulated water-cooling chuck is through reaction cavity and be positioned at reaction cavity, the other end of insulated water-cooling chuck is positioned at outside reaction cavity, described molybdenum disk electrode is hollow structure, on described molybdenum disk electrode, offer and on water inlet and water inlet, be connected with the first cooling water inlet pipe, on described molybdenum disk electrode, offer and on delivery port and delivery port, be connected with the first cooling water outlet pipe, the outer end of the outer end of described the first cooling water inlet pipe and the first cooling water outlet pipe all passes reaction cavity and is supported on reaction cavity, the position that described insulated water-cooling chuck is positioned at outside reaction cavity is connected with the second cooling water inlet pipe and the second cooling water outlet pipe, described insulated water-cooling chuck inner clip is held molybdenum bar base, described molybdenum bar base passes insulated water-cooling chuck and is positioned at outside insulated water-cooling chuck near one end of molybdenum disk electrode, pass between one end of molybdenum bar base of insulated water-cooling chuck and molybdenum disk electrode and leave gap, described molybdenum bar base is provided with away from one end of molybdenum disk electrode the propulsion plant moving horizontally for promoting molybdenum bar base.
Above-mentioned a kind of equipment of preparing spherical molybdenum powder, between the inner and outer wall of described powder cooling tank, be provided with cooling cavity, the bottom of described powder cooling tank is provided with the cooling water/gas import being connected with cooling cavity, and described powder cooling tank upper end is provided with the cooling water/gas outlet being connected with cooling cavity.
Above-mentioned a kind of equipment of preparing spherical molybdenum powder, described in pass the molybdenum bar base of insulated water-cooling chuck one end and the gap between molybdenum disk electrode be 1mm.
Above-mentioned a kind of equipment of preparing spherical molybdenum powder, described propulsion plant is electric pushrod or Electrohydraulic push rod.
Above-mentioned a kind of equipment of preparing spherical molybdenum powder, the diameter of described molybdenum disk electrode is 5～10 times of molybdenum bar base diameter.
Above-mentioned a kind of equipment of preparing spherical molybdenum powder, described molybdenum bar base passes insulated water-cooling chuck and is positioned at outside insulated water-cooling chuck away from one end of molybdenum disk electrode.
The utility model compared with prior art has the following advantages:
1, device structure of the present utility model is simple, reasonable in design, easy and simple to handle.
2, equipment of the present utility model is by arranging molybdenum disk electrode and molybdenum bar base; after energising, between molybdenum disk electrode and molybdenum bar base, discharge; make to form spherical molybdenum powder after the electric discharge melting of molybdenum bar base end; greatly improved the efficiency of molybdenum powder nodularization; reduced cost; and raw material molybdenum powder is not had to specific (special) requirements, suitability for scale production.
3, the utility model is by adopting hollow structure and being connected with the first cooling water inlet pipe and the molybdenum disk electrode of the first cooling water outlet pipe; molybdenum disk electrode area more greatly can and molybdenum bar base electrode between form uniform and stable electric field make electric discharge carry out smoothly; in the course of work, to logical cooling water in molybdenum disk electrode, can rapidly the heat of discharge generation be taken out of; protection molybdenum disk electrode, makes molybdenum disk electrode in good working state.
4, equipment of the present utility model is by being held on molybdenum bar base in insulated water-cooling chuck, insulated water-cooling chuck on the one hand can be by molybdenum bar base fixed position, avoid its irregular movement, guarantee that discharge stability carries out, the cooling water circulating in insulated water-cooling chuck on the other hand can be taken electric discharge heat out of, makes molybdenum bar base in good working state.
5, the utility model, for the shortcoming of plasma spheroidization method, adopts electric discharge fusion technology to prepare spherical molybdenum powder, and raw material molybdenum powder is not had to specific (special) requirements, strong adaptability, and also the ball molybdenum powder performance of preparation is suitable with plasma spheroidization method.
Below in conjunction with drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model equipment.
Fig. 2 is the perspective view of the utility model reactor.
Fig. 3 is the structural representation of the utility model reactor.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is the B-B cutaway view of Fig. 3.
Fig. 6 is for adopting spherical molybdenum powder prepared by the utility model equipment to amplify the scanning electron microscope (SEM) photograph of 200 times.
Fig. 7 is for adopting spherical molybdenum powder prepared by the utility model equipment to amplify the scanning electron microscope (SEM) photograph of 500 times.
The particle size distribution figure that Fig. 8 is the spherical molybdenum powder that adopts the utility model equipment and prepare.
Description of reference numerals:
1-powder cooling tank; 2-reactor; 3-powder collection tank;
4-cooling cavity; 5-cooling water/gas import; 6-cooling water/gas outlet;
7-reaction cavity; 8-purge gas pipeline; The 9-the first cooling water inlet pipe;
The 10-the first cooling water outlet pipe; 11-insulated water-cooling chuck; 12-molybdenum disk electrode;
The 13-the second cooling water inlet pipe; The 14-the second cooling water outlet pipe; 15-molybdenum bar base;
16-propulsion plant.
The specific embodiment
Embodiment 1
A kind of equipment of preparing spherical molybdenum powder shown in Fig. 3, Fig. 4 and Fig. 5 as shown in Figure 1, Figure 2,, comprise the powder cooling tank 1 of upper center opening and be installed on the reactor 2 of powder cooling tank 1 upper center aperture position, and the powder collection tank 3 that is arranged at powder cooling tank 1 below; described reactor 2 comprises the reaction cavity 7 of lower ending opening, level is installed on the insulated water-cooling chuck 11 on reaction cavity 7 and is arranged at the molybdenum disk electrode 12 of reaction cavity 7 inside, the upper end of described reaction cavity 7 is provided with the purge gas pipeline 8 being connected with reaction cavity 7 inside, one end of described insulated water-cooling chuck 11 is through reaction cavity 7 and be positioned at reaction cavity 7, the other end of insulated water-cooling chuck 11 is positioned at outside reaction cavity 7, described molybdenum disk electrode 12 is hollow structure, on described molybdenum disk electrode 12, offer and on water inlet and water inlet, be connected with the first cooling water inlet pipe 9, on described molybdenum disk electrode 12, offer and on delivery port and delivery port, be connected with the first cooling water outlet pipe 10, the outer end of the outer end of described the first cooling water inlet pipe 9 and the first cooling water outlet pipe 10 all passes reaction cavity 7 and is supported on reaction cavity 7, the position that described insulated water-cooling chuck 11 is positioned at outside reaction cavity 7 is connected with the second cooling water inlet pipe 13 and the second cooling water outlet pipe 14, described insulated water-cooling chuck 11 inner clips are held molybdenum bar base 15, described molybdenum bar base 15 passes insulated water-cooling chuck 11 and is positioned at outside insulated water-cooling chuck 11 near one end of molybdenum disk electrode 12, pass between one end of molybdenum bar base 15 of insulated water-cooling chuck 11 and molybdenum disk electrode 12 and leave gap, described molybdenum bar base 15 is provided with away from one end of molybdenum disk electrode 12 propulsion plant 16 moving horizontally for promoting molybdenum bar base 15.
As shown in Figure 1, between the inner and outer wall of described powder cooling tank 1, be provided with cooling cavity 4, the bottom of described powder cooling tank 1 is provided with the cooling water/gas import 5 being connected with cooling cavity 4, and described powder cooling tank 1 upper end is provided with the cooling water/gas outlet 6 being connected with cooling cavity 4.
As shown in Figure 2, Figure 3 and Figure 4, the one end and the gap between molybdenum disk electrode 12 that described in, pass the molybdenum bar base 15 of insulated water-cooling chuck 11 are 1mm.
As shown in Figure 1, described propulsion plant 16 is electric pushrod or Electrohydraulic push rod.
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the diameter of described molybdenum disk electrode 12 is 5～10 times (preferably 5 times, 6 times, 7 times, 8 times, 9 times and 10 times) of molybdenum bar base 15 diameters.
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, described molybdenum bar base 15 passes insulated water-cooling chuck 11 and is positioned at outside insulated water-cooling chuck 11 away from one end of molybdenum disk electrode 12.
The method that adopts the utility model equipment to prepare spherical molybdenum powder is:
Step 1, molybdenum bar base 15 is clamped in insulated water-cooling chuck 11, making molybdenum bar base 15 is 1mm near one end and the gap between molybdenum disk electrode 12 of molybdenum disk electrode 12;
Step 2, by purge gas pipeline 8, in reaction cavity 7, pass into working gas (hydrogen or argon gas, or the mist of argon gas and hydrogen), and pass into cooling water in the first cooling water inlet pipe 9 and the second cooling water inlet pipe 13;
Step 3, give molybdenum disk electrode 12 and 15 energisings of molybdenum bar base, boosted voltage is until molybdenum bar base 15 and 12 electric discharges of molybdenum disk electrode, propulsion plant 16 promotion molybdenum bar bases 15 are opened in electric discharge simultaneously makes molybdenum bar base 15 and molybdenum disk electrode 12 keep discharge conditions, in discharge process, molybdenum bar base 15 is constantly melt into spherical molybdenum powder near the end face of molybdenum disk electrode 12, described spherical molybdenum powder is by the working gas (hydrogen or the argon gas that pass into from purge gas pipeline 8, or the mist of argon gas and hydrogen) be purged in powder cooling tank 1 cooling, cooled spherical molybdenum powder falls into powder collection tank 3 and collects.
The scanning electron microscope (SEM) photograph that Fig. 6 and Fig. 7 are the spherical molybdenum powder that adopts the utility model equipment and prepare.The particle size distribution figure that Fig. 8 is the spherical molybdenum powder that adopts the utility model equipment and prepare.From Fig. 6 and Fig. 7, can find out that spherical molybdenum powder size prepared by logical the utility model equipment is inhomogeneous, the basic granular size keeping from raw material molybdenum powder, has embodied the utility model equipment to the loose adaptive capacity of raw material molybdenum powder.From Fig. 8 particle size distribution figure, also can clearly find out that its particle size distribution and raw material molybdenum powder are substantially close, but the composition of powder major part become spherical.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any restriction; every any simple modification of above embodiment being done according to utility model technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solutions of the utility model.
Claims (6)
1. an equipment of preparing spherical molybdenum powder, it is characterized in that, comprise the powder cooling tank (1) of upper center opening and be installed on the reactor (2) of powder cooling tank (1) upper center aperture position, and the powder collection tank (3) that is arranged at powder cooling tank (1) below; described reactor (2) comprises the reaction cavity (7) of lower ending opening, level is installed on the insulated water-cooling chuck (11) on reaction cavity (7) and is arranged at the inner molybdenum disk electrode (12) of reaction cavity (7), the upper end of described reaction cavity (7) is provided with the purge gas pipeline (8) being connected with reaction cavity (7) inside, one end of described insulated water-cooling chuck (11) is through reaction cavity (7) and be positioned at reaction cavity (7), the other end of insulated water-cooling chuck (11) is positioned at outside reaction cavity (7), described molybdenum disk electrode (12) is hollow structure, on described molybdenum disk electrode (12), offer and on water inlet and water inlet, be connected with the first cooling water inlet pipe (9), on described molybdenum disk electrode (12), offer and on delivery port and delivery port, be connected with the first cooling water outlet pipe (10), the outer end of the outer end of described the first cooling water inlet pipe (9) and the first cooling water outlet pipe (10) all passes reaction cavity (7) and is supported on reaction cavity (7), described insulated water-cooling chuck (11) is positioned at the outer position of reaction cavity (7) and is connected with the second cooling water inlet pipe (13) and the second cooling water outlet pipe (14), described insulated water-cooling chuck (11) inner clip is held molybdenum bar base (15), described molybdenum bar base (15) passes insulated water-cooling chuck (11) and is positioned at outside insulated water-cooling chuck (11) near one end of molybdenum disk electrode (12), pass between one end of molybdenum bar base (15) of insulated water-cooling chuck (11) and molybdenum disk electrode (12) and leave gap, described molybdenum bar base (15) is provided with away from one end of molybdenum disk electrode (12) the propulsion plant (16) moving horizontally for promoting molybdenum bar base (15).
2. a kind of equipment of preparing spherical molybdenum powder according to claim 1, it is characterized in that, between the inner and outer wall of described powder cooling tank (1), be provided with cooling cavity (4), the bottom of described powder cooling tank (1) is provided with the cooling water/gas import (5) being connected with cooling cavity (4), and described powder cooling tank (1) upper end is provided with the cooling water/gas outlet (6) being connected with cooling cavity (4).
3. a kind of equipment of preparing spherical molybdenum powder according to claim 1, is characterized in that, described in pass one end of molybdenum bar base (15) of insulated water-cooling chuck (11) and the gap between molybdenum disk electrode (12) is 1mm.
4. a kind of equipment of preparing spherical molybdenum powder according to claim 1, is characterized in that, described propulsion plant (16) is electric pushrod or Electrohydraulic push rod.
5. a kind of equipment of preparing spherical molybdenum powder according to claim 1, is characterized in that, the diameter of described molybdenum disk electrode (12) is 5～10 times of molybdenum bar base (15) diameter.
6. a kind of equipment of preparing spherical molybdenum powder according to claim 1, is characterized in that, described molybdenum bar base (15) passes insulated water-cooling chuck (11) and is positioned at outside insulated water-cooling chuck (11) away from one end of molybdenum disk electrode (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420288850.1U CN203853547U (en) | 2014-05-31 | 2014-05-31 | Equipment for manufacturing spherical molybdenum powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420288850.1U CN203853547U (en) | 2014-05-31 | 2014-05-31 | Equipment for manufacturing spherical molybdenum powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962567A (en) * | 2014-05-31 | 2014-08-06 | 金堆城钼业股份有限公司 | Method and equipment for preparing spherical molybdenum powder |
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2014
- 2014-05-31 CN CN201420288850.1U patent/CN203853547U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962567A (en) * | 2014-05-31 | 2014-08-06 | 金堆城钼业股份有限公司 | Method and equipment for preparing spherical molybdenum powder |
| 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 |
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