CN211939058U

CN211939058U - Production equipment for rapidly solidifying metal powder

Info

Publication number: CN211939058U
Application number: CN202020443178.4U
Authority: CN
Inventors: 陈云贵; 李振帅
Original assignee: Sichuan Kejiang Light Metal Material Technology Co ltd
Current assignee: Sichuan Kejiang Light Metal Material Technology Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-11-17
Anticipated expiration: 2030-03-31

Abstract

The utility model discloses a rapid solidification metal powder's production facility belongs to metal powder preparation field. The molten metal enters a centrifugal atomizer rotating at a high speed, the molten metal is thrown out from a rotary liquid spraying atomizing hole on the centrifugal atomizer under the action of centrifugal force, and small metal droplets are thrown onto a quenching wall of a quenching chamber rotating at the same high speed to realize rapid solidification. The obtained quick-setting metal powder is collected in a powder collecting device at the bottom of the quenching chamber. The utility model discloses a mode that high-speed centrifugation atomizing combines the rotatory metal section of thick bamboo rapid cooling of water-cooling obtains high performance rapid hardening metal powder, can realize large-scale production, is applicable to high strength metal powder such as preparation aluminum alloy, magnesium alloy.

Description

Production equipment for rapidly solidifying metal powder

Technical Field

The utility model relates to a metal powder preparation technical field, concretely relates to rapid solidification metal powder's production facility.

Background

The powder preparation is the first step in powder metallurgy, and the methods for producing powders are many, and reduction, atomization, mechanical crushing, ball mill crushing, mechanical cutting, gas stream crushing, hydrogenation mechanical crushing, and electrolysis are the most widely used methods in terms of industrial scale.

The metal powder production method based on molten metal is mainly a rotary electrode and atomization method. Melting the rotating electrode by plasma or laser techniques can produce metal powder, but the rotating electrode needs to be produced first, increasing the input cost, and generally the yield is not high.

The atomization method for preparing metal powder is to atomize metal liquid into metal powder under the action of high-speed gas or water through a nozzle. The performance of preparing metal powder by using molten metal is not only related to the physical properties of the particle size of the powder, the superheat degree of the molten metal and the like, but also directly related to the solidification speed of the molten metal and the thermal physical properties of a cooling medium, such as the thermal conductivity, the specific heat capacity and the like. Compared with copper as a cooling medium, the thermal conductivity of water is lower by about 4 orders of magnitude, and nitrogen or argon and the like are lower by about 5 orders of magnitude. And the comparative volumetric heat capacity is much inferior to that of the metallic copper cooling medium due to the low density of water, nitrogen and argon. Further, aluminum alloy and magnesium alloy metal liquids are not suitable for use because of their reaction with water and nitrogen at high temperatures.

In addition, at present, a centrifugal atomization device for preparing metal powder at home and abroad comprises an atomization chamber, a crucible is arranged above the atomization chamber, the bottom of the crucible is connected with a liquid outlet nozzle arranged in the atomization chamber through a transfusion rod, and the liquid outlet nozzle corresponds to an atomization disc. After the metal is melted by the crucible, the molten metal flows onto the atomizing disk rotating at high speed through the infusion rod and the liquid outlet nozzle, and the metal solution is thrown out from the edge of the atomizing disk under the protection of inert gas to form metal powder. However, the linear velocity of the rotating disc in the radial direction is greatly changed in the method, so that the cooling speed difference of the metal liquid is large, the powdering property of the continuous liquid flow conveying method on the atomizing disc is not good, and particularly magnesium alloy, aluminum alloy and the like with good plasticity are difficult to prepare high-quality and high-strength metal powder.

Finally, metal liquid is milled by a melt-spinning rapid quenching method, and after a strip is prepared, mechanical crushing and ball milling are needed to prepare powder, so that the process is complex and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rapid solidification metal powder's production facility to solve the not high problem that just can not realize large-scale production of current metal powder preparation technology powder intensity.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

a production apparatus for rapidly solidifying metal powder, comprising: the bracket, the holding furnace, the quenching chamber and the powder collecting device are respectively arranged on the bracket; the quench chamber comprises: the centrifugal atomizer, a quenching wall arranged in a manner of rotating relative to the centrifugal atomizer, a quenching shell which is separated from the quenching wall and is provided with a cooling liquid inlet and a cooling liquid outlet, and a cooling cavity formed between the quenching wall and the quenching shell; the centrifugal atomizer is rotationally connected between the heat preservation furnace and the quenching chamber, the centrifugal atomizer comprises a sleeve communicated with the heat preservation furnace, and a plurality of rotary spray atomizing holes are formed in the centrifugal atomizer; the outlet of the quenching chamber is arranged in the powder collecting device.

The utility model discloses in getting into the centrifugal atomizer of high-speed rotation with the molten metal in the heat preservation crucible, the molten metal is thrown away from the rotatory hydrojet atomizing hole on the centrifugal atomizer under the effect of centrifugal force, and the metal droplet gets rid of on the same high-speed rotatory quench wall, realizes the rapid solidification, solidifies to metal powder. The obtained quick-setting metal powder is collected in a powder collecting device at the bottom of the quenching chamber.

The utility model discloses utilize the centrifugal atomization ware of relative rotation and the rapid cooling wall (outer wall irrotational) between the rotational speed difference of rapid cooling room to utilize centrifugal force to throw away the metal liquid drop, then the metal liquid drop solidifies fast on the rapid cooling wall of high-speed rotation, thereby forms the powder. The utility model discloses a principle is similar to get rid of area rapid hardening method powder process, and relative rotational speed difference is big more, and the metal liquid drop of throwing away solidifies on the quench wall to it is little that the metal powder granule is obtained, and cooling rate is fast more, and metal powder's tissue is then more tiny, thereby improves metal powder's mechanical strength, and the difference lies in that the area method is difficult to prepare out the rapid hardening material of powder form.

The relative rotational speed between the centrifugal atomizer and the quench wall is obtained by controlling the rotational speed and/or the diversion of both. When the centrifugal atomizer and the quenching wall rotate in the same direction, the rotating speed of the centrifugal atomizer is greater than that of the quenching wall, or the rotating speed of the quenching wall is greater than that of the centrifugal atomizer. It is also possible to reverse the direction of rotation of the centrifugal atomizer with respect to the quench wall, making it easier to obtain a larger relative rotational speed. As a preferred embodiment, the centrifugal atomizer and the quenching wall are reversely rotated to obtain larger relative rotation speed, so that less driving force is required, and the energy consumption is reduced.

The sleeve pipe plays the role of connecting the holding furnace (specifically connecting the liquid inlet pipe of the holding furnace) and the centrifugal atomizer, and leads the metal liquid into the centrifugal atomizer. The centrifugal atomizer is positioned in the quenching chamber, and a plurality of rotary spray liquid atomizing holes arranged on the surface of the centrifugal atomizer are used for throwing out molten metal in the centrifugal atomizer so as to prepare metal powder. Preferably, the radial dimension of the liquid inlet pipe is slightly smaller than that of the sleeve pipe, and the radial dimension of the sleeve pipe is obviously smaller than that of the centrifugal atomizer. The sleeve is a slender tube with two open ends, and the centrifugal atomizer is a short thick hollow column with one open end and the other closed end. The slender sleeve pipe is convenient to connect and install, and the short and thick centrifugal atomizer can accommodate more molten metal in the horizontal direction, so that more molten metal can be thrown out under the action of centrifugal force, and more vertical spaces can be saved. Preferably, the rotating spray atomizing orifices of the centrifugal atomizer surface are circular orifices.

The production equipment of the utility model forms one set of continuous operation production equipment through the holding furnace, the quenching chamber and the powder collecting device which are arranged on the bracket. During production, finished metal powder can be obtained from the powder collecting device only by putting metal into the heat preservation furnace and carrying out the processes of melting, centrifugal throwing, quick setting, collecting and the like, and the metal powder is not required to be processed into a throwing belt and then made into powder, so that large-scale continuous production of the metal powder is realized, and the whole preparation process is very simple, convenient and easy to operate and has higher economic value. The utility model discloses a production facility can be applied to the large-scale production manufacturing of light metal alloys such as high strength aluminum alloy and magnesium alloy, can greatly satisfy a large amount of demands of market to high performance light metal alloy isotructure material.

Further, in a preferred embodiment of the present invention, the heat-preserving furnace comprises a heat-preserving crucible, a liquid inlet pipe, a heat-preserving furnace body, a liquid delivery control valve, a liquid delivery pipe, a liquid flow control valve rod, a liquid level detector, a thermocouple, a heating device, a shielding gas inlet pipe, a shielding gas outlet pipe, a shielding gas inlet valve and a shielding gas unloading valve; the heat preservation crucible and the heat preservation furnace body are arranged on an upper supporting plate of the support, the heat preservation crucible is arranged in the heat preservation furnace body, the liquid inlet pipe is arranged at the bottom of the heat preservation crucible and is communicated with the sleeve, the liquid conveying pipe, the liquid flow control valve rod, the liquid level detector, the thermocouple, the protective gas inlet pipe and the protective gas outlet pipe are respectively arranged on the heat preservation furnace body, the liquid conveying control valve is arranged on the liquid conveying pipe, the liquid conveying pipe is communicated with the heat preservation crucible, the heating device is arranged around the heat preservation crucible, the protective gas inlet valve is arranged on the protective gas inlet pipe, and the protective gas unloading valve is arranged on the protective gas outlet.

The utility model conveys the molten metal melted outside to the holding furnace through the liquid conveying pipe, thereby ensuring continuous production; the liquid level detector arranged in the heat preservation furnace is used for detecting the liquid level in the heat preservation crucible, and the detected liquid level signal is transmitted to the infusion control valve on the infusion tube, so that the relatively stable liquid level is maintained; the temperature of the molten metal in the heat-preserving crucible is detected by the thermocouple, and the detected temperature signal is transmitted to the heating device, so that the molten metal keeps a relatively stable temperature. The liquid inlet pipe can be integrally formed with the heat preservation furnace or can be formed separately. The liquid inlet pipe is connected with the heat preservation furnace and the centrifugal atomizer, and the molten metal liquid is guided into the centrifugal atomizer.

Furthermore, in a preferred embodiment of the present invention, the diameter of the hole for atomizing the rotary spray is less than or equal to 0.5 mm.

In order to better produce metallurgical bonding between the powders in the subsequent extrusion process, the particle size of the powders needs to be controlled below 0.5 mm.

Further, in the embodiment of the preferred embodiment of the utility model, be equipped with on the support and be used for driving the rotatory centrifugal atomizer drive group of centrifugal atomizer, centrifugal atomizer drive group is including setting up the centrifugal atomizer driving motor on the support and connecting the centrifugal atomizer band pulley of centrifugal atomizer driving motor and centrifugal atomizer, and the sleeve pipe passes through the centrifugal atomizer bearing and installs on the support and sheathed tube outside cover has the centrifugal atomizer band pulley.

Further, in the preferred embodiment of the present invention, the bracket is further provided with a quenching wall driving set for driving the quenching wall to rotate, and the quenching wall driving set includes a quenching wall driving motor disposed on the bracket and a quenching wall belt pulley connected to the quenching wall driving motor and the quenching wall.

Further, in the embodiment of the preferred embodiment of the utility model, the rapid cooling wall is connected with the play powder union coupling, goes out the powder pipe through lower rotary seal circle and support sealing connection and install on the support through a powder pipe bearing, and the outside cover that goes out the powder pipe has a rapid cooling wall band pulley, and the play powder mouth that goes out the powder pipe arranges in the powder collection device, and the rapid cooling wall passes through upper rotary seal circle and bushing, and the rapid cooling shell passes through shell rotary seal circle and bushing, and the rapid cooling shell is fixed in down on the extension board.

The utility model discloses the quenching wall of quenching chamber carries out the quench solidification with the metal liquid drop of throwing away to obtain metal powder, go out the powder pipe and be arranged in carrying metal powder to collecting the powder device and collect, go out the powder pipe simultaneously and be used for with the rotatory quenching wall drive group link of drive quenching wall. The quenching wall driving group acts on the powder outlet pipe to rotate, so that the quenching wall is driven to rotate together. The quench wall and the quench housing define a cooling chamber for conveying a cooling liquid by which the metal droplets contacting the quench wall are quenched to solidify into a powder. The powder outlet pipe is connected with the lower rotary sealing ring, so that the sealing performance of the bottom of the cooling cavity can be still ensured when the quenching wall rotates, and the leakage of cooling liquid is avoided.

Further, in the preferred embodiment of the present invention, the quench housing is maintained in a mating configuration with the quench wall. The quench wall may be a cylinder or a combination of a cylinder and a conical cylinder to ensure that the droplets thrown by the centrifugal atomizer reach the quench wall at substantially the same distance.

Preferably, the lower part of the quenching wall is a conical body, so that the solidified metal powder can automatically enter the powder collecting device under the action of gravity, and the device is convenient and energy-saving. The quenching shell and the quenching wall keep the matched shape, which is beneficial to obtaining the same cooling speed when the metal liquid drop contacts the quenching wall, thereby ensuring that the quality of the metal powder is more uniform and stable.

The relative linear velocity referred to in the present invention is the linear velocity of the centrifugal atomizer relative to the quench wall.

The utility model discloses following beneficial effect has:

the utility model discloses a mode of high-speed centrifugal atomization combination water-cooling rotation metal section of thick bamboo rapid cooling guarantees that the metal liquid drop solidification process is accomplished on the rapid cooling wall of rapid cooling room, and through the rotational speed difference between rapid cooling wall and the centrifugal atomization ware, metal liquid drop solidification process is with higher speed, obtains high performance rapid hardening metal powder, can realize large-scale production, is applicable to high strength metal powder such as preparation aluminum alloy, magnesium alloy, has solved the problem that current technology is complicated in the aspect of the quick powder process procedure of industrialization, with high costs, powder properties is low.

The utility model discloses a quench wall of quench chamber compares with current centrifugal atomization preparation mode, has kept the linear velocity of relative stability, can guarantee that the molten metal solidification rate is unanimous basically. The utility model discloses a centrifugal atomizer has atomization and centrifugal force effect to the molten metal, can avoid leading to the problem that powder intensity is high inadequately because of the metal powder that utilizes the preparation of rotatory atomizing disk is big because of the solidification speed difference.

Drawings

FIG. 1 is a front view of a production facility according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a perspective view of a production facility according to an embodiment of the present invention;

FIG. 4 is a top view of a production facility according to an embodiment of the present invention;

fig. 5 is a schematic view of a part of the structure of the production equipment of the embodiment of the present invention.

In the figure: 100-production equipment; 10-a scaffold; 101-a leg; 102-an upper support plate; 103-lower support plate; 20-maintaining the temperature in a furnace; 201-heat preservation crucible; 202-liquid inlet pipe; 203-heat preservation furnace body; 204-an infusion control valve; 205-an infusion tube; 206-a liquid flow control valve stem; 207-liquid level detector; 208-a thermocouple; 209-a heating device; 210-a shielding gas inlet pipe; 211-protective gas outlet pipe; 212-shielding gas inlet valve; 213-protective gas unloading valve; 30-a quenching chamber; 301-a cannula; 302-centrifugal atomizer; 303-rotating spray atomizing holes; 304-centrifugal atomizer bearings; 305-a quench wall; 306-a quench housing; 307-a cooling chamber; 308-centrifugal atomizer drive motor; 309-centrifugal atomizer pulley; 310-quench wall drive motor; 311-chilled wall pulley; 312-powder outlet pipe; 313-housing rotary seal ring; 314-lower rotary seal ring; 315-powder outlet tube bearing; 316-upper rotary seal ring; 317-cooling liquid outlet; 318-coolant inlet; 40-a powder collecting device; 401-rotating a sealing ring of a powder collecting device; 402-collecting powder device outlet.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1 to 4, a rapid solidification metal powder production apparatus 100 according to an embodiment of the present invention includes: a bracket 10, a holding furnace 20, a quenching chamber 30 and a powder collecting device 40 which are respectively arranged on the bracket 10.

Referring to fig. 1-4, the bracket 10 of the present invention is used to mount and fix the holding furnace 20, the quenching chamber 30, the powder collecting device 40, the centrifugal atomizer driving group and the quenching wall driving group as the supporting member of the whole device. The utility model discloses support 10 of embodiment mainly includes landing leg 101, goes up extension board 102 and lower extension board 103, only does in the figure the utility model discloses an implementation mode, and the technical personnel in the field can use installation holding furnace 20, rapid cooling chamber 30, collection powder device 40 as the purpose, combines actual conditions to carry out adaptability to support 10's structure and adjusts. In the embodiment shown in fig. 1-4, the stand 10 includes four legs 101 and an upper support plate 102 and a lower support plate 103 disposed between the four legs 101. The upper support plate 102 and the lower support plate 103 are arranged at intervals, the upper support plate 102 is arranged on the top of the support leg 101, and the lower support plate 103 is arranged on the lower portion of the support leg 101. As shown in fig. 1 and 2, the holding furnace 20 and the centrifugal atomizer driving group are provided on the upper support plate 102. The lower support plate 103 is provided with a quenching chamber 30 and a quenching wall driving set. A centrifugal atomizer 302 is mounted between the upper plate 102 and the quench chamber 30. The powder collecting device 40 is arranged below the lower support plate 103 and communicated with the quenching chamber 30.

Referring to fig. 1 and 2, the holding furnace 20 includes a holding crucible 201, a holding furnace body 203, a liquid delivery control valve 204, a liquid delivery pipe 205, a liquid flow control valve stem 206, a liquid level detector 207, a thermocouple 208, a heating device 209, a shielding gas inlet pipe 210, a shielding gas outlet pipe 211, a shielding gas inlet valve 212, a shielding gas unloading valve 213, and a liquid inlet pipe 202 communicating with the holding crucible 201. The heat-preserving crucible 201 and the heat-preserving furnace body 203 are arranged at the top of the support 10, the heat-preserving crucible 201 is arranged in the heat-preserving furnace body 203, the infusion tube 205, the liquid flow control valve rod 206, the liquid level detector 207, the thermocouple 208, the protective gas inlet tube 210 and the protective gas outlet tube 211 are arranged on the heat-preserving furnace body 203, the infusion control valve 204 is arranged on the infusion tube 205, the infusion tube 205 is communicated with the heat-preserving crucible 201, the heating device 207 is arranged around the heat-preserving crucible 201, and the liquid inlet tube 202 is arranged at the bottom of the heat-preserving crucible 201 and is communicated with the sleeve 301. The holding furnace body 203 is arranged on the upper support plate 102, and the liquid inlet pipe 202 is arranged at the bottom of the holding crucible 201 and is communicated with the centrifugal atomizer 302. The thermal crucible 201 is provided with a heating device 207 for heating the metal in the thermal crucible 201 to maintain a relatively stable temperature of the metal liquid. The crucible 201 is a container for containing metal. The top of the heat-insulating crucible 201 is provided with a liquid inlet opening which is communicated with a liquid conveying pipe 205, and the bottom of the heat-insulating crucible is connected with a liquid inlet pipe 202. The liquid inlet pipe 202 may be integrally formed with the heat-insulating crucible 201, or may be formed separately. The liquid inlet pipe 202 connects the heat-insulating crucible 201 and the centrifugal atomizer 302, and guides the molten metal to the centrifugal atomizer 302. The thermal crucible 201 is arranged on the upper support plate 102, and the liquid inlet pipe 202 passes through the upper support plate 102 and is connected with the centrifugal atomizer 302. The liquid conveying pipe 205 is used for adding molten metal, and the adding amount is adjusted through the liquid conveying control valve 204 so as to control the height of the molten metal level in the heat-preservation crucible 201. The liquid flow control valve rod 206 controls the flow of the molten metal into the centrifugal atomizer 302, and the shielding gas inlet valve 212 controls the inflow of the shielding gas and controls the pressure in the holding furnace 20.

Referring to fig. 2, a centrifugal atomizer 302 is connected between the holding furnace 20 and the quenching chamber 30 and a sleeve 301 on the centrifugal atomizer 302 is communicated with the liquid inlet pipe 202 of the holding furnace 20. A centrifugal atomizer 302 is disposed within the quench chamber 30, and the centrifugal atomizer 302 is provided with a plurality of rotating spray liquid atomizing holes 303. In the embodiment shown in fig. 2, the centrifugal atomizer 302 comprises a sleeve 301 in communication with the holding furnace 20. Specifically, the sleeve 301 is connected to the liquid inlet pipe 202 of the holding furnace 20, the sleeve 301 is disposed outside the liquid inlet pipe 202, and the feeding port of the sleeve 301 is connected to the upper support plate 102 through the centrifugal atomizer bearing 304. The sleeve 301 serves to connect the holding furnace 20 (specifically, the liquid inlet pipe 202 of the holding furnace 20) and the centrifugal atomizer 302, and guides the molten metal to the centrifugal atomizer 302. The centrifugal atomizer 302 is located in the quenching chamber 30, and a plurality of rotary spray atomizing holes 303 are formed in the surface of the centrifugal atomizer 302 and used for throwing out molten metal in the centrifugal atomizer 302 to prepare metal powder. In the embodiment shown in fig. 2, the radial dimension of the liquid inlet pipe 202 is slightly smaller than the radial dimension of the sleeve 301, the radial dimension of the sleeve 301 being significantly smaller than the radial dimension of the centrifugal atomizer 302. The casing 301 is a slender tube with two open ends, and the centrifugal atomizer 302 is a short thick hollow column with one open end and the other closed end. The cannula 301 is preferably a round tube and the centrifugal atomizer 302 is preferably a cylinder. The centrifugal atomizer 302 is provided with a plurality of rotary spray atomizing holes 303. The rotating spray atomizing holes 303 are preferably circular holes. The aperture of the rotary spray atomizing hole 303 is less than or equal to 0.5 mm. The plurality of rotary spray atomizing holes 303 are distributed on the side wall of the centrifugal atomizer 302, and metal droplets are uniformly thrown out under the action of centrifugal force.

Referring to fig. 2, a centrifugal atomizer drive set is provided on the upper plate 102 for driving the rotary centrifugal atomizer 302 in rotation. The centrifugal atomizer drive group includes a centrifugal atomizer drive motor 308 provided on the upper support plate 102 and a centrifugal atomizer pulley 309 connecting the centrifugal atomizer drive motor 308 and the centrifugal atomizer 302. A power output shaft (rotating shaft) of the centrifugal atomizer driving motor 308 passes through the upper support plate 102 and is connected with the sleeve 301 of the centrifugal atomizer 302 through a centrifugal atomizer pulley 309. The centrifugal atomizer drive motor 308 rotates, and drives the sleeve 301 to rotate through the centrifugal atomizer belt wheel 309, so as to drive the centrifugal atomizer 302 to rotate, and throw out the molten metal in the centrifugal atomizer 302.

Referring to fig. 2, the quench chamber 30 includes a quench wall 305 disposed in a rotatable manner relative to the centrifugal atomizer 302, a quench housing 306 spaced from the quench wall 305 and having a coolant inlet 318 and a coolant outlet 317, and a cooling cavity 307 formed between the quench wall 305 and the quench housing 306. The outlet of the quench chamber 30 is placed in a dust catcher 40. As shown in fig. 2 and 5, the quenching wall 305 is in the form of a cylindrical structure with a sealed opening, and has a through hole at the top for the liquid inlet pipe 202 to pass through, and a tapered bottom with an outlet connected to the powder collecting device 40. The quenching wall 305 is rotatable and rotates relative to the centrifugal atomizer 302 to form a rotational speed difference, so that the molten metal flying from the rotary spray atomizing hole 303 is sprayed on the quenching wall 305 to be rapidly solidified into metal powder. The quench wall 305 is connected to a powder outlet tube 312. A cooling cavity 307 is formed between the quench wall 305 and the quench housing 306. The powder outlet pipe 312 is connected with the lower support plate 103 through a lower rotary sealing ring 314. The powder outlet pipe 312 is mounted on the bracket 10 through a powder outlet pipe bearing 315. Specifically, the powder outlet tube 312 passes through the lower support plate 103 and is connected to the lower support plate 103 through a powder outlet tube bearing 315. The powder outlet pipe 312 is driven by the quenching wall driving motor 310 to rotate, thereby rotating the quenching wall 305. The discharge port of the powder outlet pipe 312 is communicated with the powder collecting device 40. The quench wall 305 is connected to the sleeve 301 by an upper rotary seal 316, the quench housing 306 is connected to the sleeve 301 by a housing rotary seal 313, and the quench housing 306 is fixed to the lower support plate 103. The quench housing 306 maintains a matching shape with the quench wall 305.

Referring to fig. 2, the support 10 is further provided with a quenching wall driving unit for driving the quenching wall 305 to rotate. The quench wall drive train includes a quench wall drive motor 310 disposed on the lower support plate 103 and a quench wall pulley 311 connecting the quench wall drive motor 310 and the quench wall 305. The quenching wall belt wheel 311 is sleeved outside the powder outlet pipe 312 and drives the powder outlet pipe 312 to rotate.

Referring to fig. 2, the powder collecting device 40 is disposed below the lower support plate 103, and has an opening at the top thereof communicating with the powder outlet pipe 312 for collecting the metal powder produced in the quenching chamber 30. In this embodiment, the powder collecting device 40 is in a pot or barrel shape, and is provided with a powder collecting device rotary seal ring 401 and a powder collecting device outlet 402. The rotary sealing ring 401 of the powder collecting device is arranged at the joint of the powder outlet pipe 312 and the powder collecting device 40. It should be noted that the utility model discloses collection powder device that indicates is not restricted to specific certain constructional device, and its function is except the utility model discloses the collection powder that the embodiment described can also be set to parts such as powder transition storehouse, buffer tank or screw rod transport to with the butt joint of low reaches alloy ingot preparation production line, realize alloy powder preparation to alloy finished product's continuity, large-scale production.

The embodiment of the utility model provides a adopt above-mentioned production facility 100 to produce the method of quick set metal powder, it includes following step: continuously injecting cooling liquid into a cooling cavity 307 of the quenching chamber 30, closing a liquid flow control valve rod 206, opening a protective gas inlet valve 212 to enable the protective cavity of the heat-insulating crucible 201 to be in an inert gas protection state, adjusting a liquid conveying control valve 204 to enable the metal liquid in a liquid conveying pipe 205 to enter the heat-insulating crucible 201, heating and insulating the metal liquid in the heat-insulating crucible 201, detecting the liquid level through a liquid level height detector 207, detecting the temperature of the metal liquid through a thermocouple 208, starting a centrifugal atomizer driving motor and a quenching wall driving motor to enable the centrifugal atomizer 302 and the quenching wall 305 of the quenching chamber 30 to relatively rotate, and controlling the relative rotating speed of the centrifugal atomizer 302 and the quenching wall 305 to enable the relative linear speed to be 5-60 m/s. The liquid flow control valve rod 206 is adjusted to make the metal liquid flow into the centrifugal atomizer 302, and the metal liquid is thrown out under the action of centrifugal force after flowing into the centrifugal atomizer 302, and is rapidly solidified into metal powder on the quenching wall 305, and then is collected in the powder collecting device 40. The centrifugal atomizer 302 is driven to rotate by a centrifugal atomizer drive motor 308, and the quench wall 305 is driven to rotate by a quench wall drive motor 310.

The cooling liquid can adopt circulating water to realize the cyclic utilization of resources. The cooling liquid outlet 317 and the cooling liquid inlet 318 of the quenching shell 306 of the quenching chamber 30 are respectively arranged at the top and the bottom of the quenching shell 306, so that the cooling liquid can fill the whole cooling cavity 307 and continuously exchange heat with the metal liquid drops, and the cooling effect is fully ensured. The relative rotational speed difference referred to in the present disclosure refers to the rotational speed difference between the quench wall 305 and the centrifugal atomizer 302.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A production apparatus for rapidly solidifying metal powder, comprising: the device comprises a bracket (10), and a heat preservation furnace (20), a quenching chamber (30) and a powder collecting device (40) which are respectively arranged on the bracket (10);

the quench chamber (30) comprises: a centrifugal atomizer (302), a quench wall (305) arranged in a manner rotating relative to the centrifugal atomizer (302), a quench housing (306) spaced from the quench wall (305) and having a coolant inlet (318) and a coolant outlet (317), and a cooling chamber (307) formed between the quench wall (305) and the quench housing (306); the centrifugal atomizer (302) is rotatably connected between the heat preservation furnace (20) and the quenching chamber (30), the centrifugal atomizer (302) comprises a sleeve (301) communicated with the heat preservation furnace (20), and a plurality of rotary liquid spray atomizing holes (303) are formed in the centrifugal atomizer (302); the outlet of the quenching chamber (30) is arranged in the powder collecting device (40).

2. The production facility of rapidly solidified metal powder according to claim 1, wherein the holding furnace (20) comprises a holding crucible (201), a liquid inlet pipe (202), a holding furnace body (203), a liquid delivery control valve (204), a liquid delivery pipe (205), a liquid flow control valve stem (206), a liquid level detector (207), a thermocouple (208), a heating device (209), a shielding gas inlet pipe (210), a shielding gas outlet pipe (211), a shielding gas inlet valve (212), and a shielding gas unloading valve (213);

the utility model discloses a heat preservation crucible, including support (10), heat preservation crucible (201) with heat preservation stove furnace body (203) sets up on last backup pad (102) of support (10), and heat preservation crucible (201) sets up in heat preservation stove furnace body (203), feed liquor pipe (202) set up the bottom of heat preservation crucible (201) and with sleeve pipe (301) intercommunication, transfer line (205), liquid flow control valve rod (206), liquid level height detector (207), thermocouple (208), protective gas intake pipe (210) and protective gas outlet duct (211) set up respectively on heat preservation stove furnace body (203), infusion control valve (204) set up on transfer line (205), transfer line (205) with heat preservation crucible (201) intercommunication, heating device (209) set up around heat preservation crucible (201), protective gas admission valve (212) set up on protective gas intake pipe (210), the protective gas unloading valve (213) is arranged on the protective gas outlet pipe (211).

3. The apparatus for producing rapidly solidified metal powder as claimed in claim 1, wherein the diameter of the hole of said rotary spray atomizing hole (303) is 0.5mm or less.

4. The apparatus for producing rapidly solidified metal powder as claimed in claim 1, wherein said support (10) is provided with a centrifugal atomizer driving set for driving said centrifugal atomizer (302) to rotate, said centrifugal atomizer driving set comprises a centrifugal atomizer driving motor (308) provided on said support (10) and a centrifugal atomizer pulley (309) connecting said centrifugal atomizer driving motor (308) and said centrifugal atomizer (302), said sleeve (301) is mounted on said support (10) through a centrifugal atomizer bearing (304) and said centrifugal atomizer pulley (309) is sleeved outside said sleeve (301).

5. The apparatus for producing rapidly solidified metal powder as claimed in any one of claims 1 to 4, wherein said support (10) is further provided with a quenching wall driving set for driving said quenching wall (305) to rotate, said quenching wall driving set comprising a quenching wall driving motor (310) provided on said support (10) and a quenching wall pulley (311) connecting said quenching wall driving motor (310) and said quenching wall (305).

6. The apparatus for producing rapidly solidified metal powder as claimed in claim 5, wherein said quenching wall (305) is connected to a powder outlet pipe (312), said powder outlet pipe (312) is connected to said support (10) via a lower rotary sealing ring (314) and is mounted on said support (10) via a powder outlet pipe bearing (315), said quenching wall pulley (311) is sleeved outside said powder outlet pipe (312), a powder outlet of said powder outlet pipe (312) is disposed in said powder collecting device (40), said quenching wall (305) is connected to said sleeve (301) via an upper rotary sealing ring (316), said quenching housing (306) is connected to said sleeve (301) via a housing rotary sealing ring (313), and said quenching housing (306) is fixed to a lower support plate (103) of said support (10).

7. The apparatus for the production of fast-solidifying metallic powder according to claim 6, characterized in that the quench housing (306) maintains a matching shape with the quench wall (305).