CN209811226U - Premixed metal powder heater - Google Patents
Premixed metal powder heater Download PDFInfo
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- CN209811226U CN209811226U CN201920492347.0U CN201920492347U CN209811226U CN 209811226 U CN209811226 U CN 209811226U CN 201920492347 U CN201920492347 U CN 201920492347U CN 209811226 U CN209811226 U CN 209811226U
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Abstract
The utility model provides a metal powder heater mixes in advance, metal powder heater includes in advance: the heating plate group heat conduction oil heating device comprises a shell, a metal powder feeding hole arranged on the shell, a metal powder discharging hole arranged on the shell, a heating plate group heat conduction oil inlet arranged on the shell, a heating plate group heat conduction oil outlet arranged on the shell and a heating plate group arranged in the shell; the heating plate group comprises at least one heating plate; an oil channel is arranged in at least one heating plate; the oil channel of the heating plate is communicated with the heat conduction oil inlet of the heating plate group; and the oil channel of the heating plate is communicated with the heat conduction oil outlet of the heating plate group. The utility model discloses a premix metal powder heater heats through the conduction oil, can avoid the electric leakage hidden danger that high power electrical heating technique exists.
Description
Technical Field
The utility model relates to a powder metallurgy structure parts machining technical field, more specifically relates to a premix metal powder heater.
Background
The powder metallurgy structure part processing is an advanced manufacturing technology integrating material preparation and part forming, saving energy and materials, being efficient, realizing final forming and reducing pollution, has irreplaceable status and function in the material and part manufacturing industry, and has entered the development front of the modern material science. Powder metallurgy is a highly new technology for manufacturing mechanical parts and metal products from metals and other powders by press forming, sintering and the necessary subsequent treatments. Materials and products manufactured by using the powder metallurgy technology are basic substances for producing various novel industrial materials, become key new materials for solving various industrial problems, play a key role in the development of the whole engineering system field, and are widely applied in the fields of automobile industry, mechanical industry, aerospace industry and the like. The basic process of powder metallurgy structure part processing can be summarized into three major steps, namely powder making, molding and sintering. The metal powder produced has an important step, namely the heating of the metal powder,
especially in the autumn and winter season, the metal powder needs to be heated to a suitable temperature, for example, a relatively typical iron powder needs to be heated to 70-130 ℃. The temperature of the iron powder entering the die is effectively controlled, so that cracks can be prevented from being generated in the subsequent processing process of the manufactured green body, and meanwhile, the service life of the die is obviously prolonged.
In the field of powder metallurgy, the typical technique for heating metal powder is generally electric heating, and some day-care or European and American enterprises which are leading in the industry adopt the electric heating technique. The electric heating technology adopts an electric heating wire to be wound outside a pre-mixed metal powder bin, and heat generated by heating of the electric heating wire is transferred to the pre-mixed metal powder inside the bin in a heat conduction mode. The application of the electric heating technology in the field of heating premixed iron powder has the inherent technical problems that:
1. the metal powder is heated by adopting an electric heating technology, potential safety hazards exist, the metal powder is an electric excellent conductor, a heater is often required to be moved in the powder metallurgy processing process, abrasion and collision are difficult to avoid, and once the electric leakage consequence exists by adopting a high-power electric heating technology, the situation is unreasonable.
2. The electric heating technology has serious uneven heating, the material temperature close to the electric heating wire can cause the denaturation of some functional solvents added in the metal powder, and the temperature of the metal powder far away from the electric heating wire is lower.
3. The electric heating technology densely distributes the electric heating wires on the outer surface of the bin heater to form a heating source, but no matter how the electric heating wires are arranged, the heat exchange area is still only the area of the outer bin body, and the heating area is too small.
4. In autumn and winter, the metal powder is a good thermal conductor, and the raw materials purchased by powder metallurgy enterprises are basically consistent with the ambient temperature, which means that the temperature of the heated metal powder is even lower than 0 ℃, and when the temperature is also heated from the ambient temperature to 70-130 ℃, the heating efficiency of the electric heater in winter is extremely low, and the metal powder is difficult to be heated to the required temperature efficiently and rapidly.
5. Because the defects of the electric heater cause the defects of uneven temperature of the heated metal powder, the frequency of the die for pressing the green body is broken, and the defective rate of the finally produced product is high.
Disclosure of Invention
The utility model discloses an overcome above-mentioned prior art an at least defect, provide a premix metal powder heater, the utility model discloses a technical scheme as follows.
A premixed metal powder heater comprising: the heating plate group heat conduction oil heating device comprises a shell, a metal powder feeding hole arranged on the shell, a metal powder discharging hole arranged on the shell, a heating plate group heat conduction oil inlet arranged on the shell, a heating plate group heat conduction oil outlet arranged on the shell and a heating plate group arranged in the shell; the heating plate group comprises at least one heating plate; an oil channel is arranged in at least one heating plate; the oil channel of the heating plate is communicated with the heat conduction oil inlet of the heating plate group; and the oil channel of the heating plate is communicated with the heat conduction oil outlet of the heating plate group.
Preferably, the shell is provided with a shell heat-conducting oil inlet and a shell heat-conducting oil outlet; the shell is provided with an oil channel; the oil channel of the shell is communicated with the shell heat-conducting oil inlet; and the oil channel of the shell is communicated with the shell heat conduction oil outlet.
Preferably, a baffling weld is provided on the housing.
Preferably, the housing comprises a top cover plate, a self-heating cartridge body and a self-heating cone; the top cover plate is arranged at the upper part of the self-heating bin body, and the self-heating cone is arranged at the bottom of the self-heating bin body; the self-heating bin body is provided with the shell heat conduction oil inlet, the shell heat conduction oil outlet and the oil channel of the shell; and/or the self-heating cone is provided with the shell heat conduction oil inlet, the shell heat conduction oil outlet and the oil channel of the shell.
Preferably, the premixed metal powder heater includes at least two heating plates provided with oil passages; the heating plate provided with the oil channel comprises at least two shapes; the heating plate provided with the oil channel in at least one shape can extend into the self-heating cone.
Preferably, the metal powder feed inlet is arranged on the top cover plate; the metal powder discharge port is arranged on the self-heating cone.
Preferably, the heating plate group heat conduction oil inlet and the heating plate group heat conduction oil outlet are both arranged on the top cover plate.
Preferably, the heating plate group further comprises an oil inlet half-moon-shaped main pipe and an oil outlet half-moon-shaped main pipe; the oil inlet half-moon-shaped main pipe is communicated with the heat conduction oil inlet of the heating plate group and the oil channel of at least one heating plate; the oil outlet half-moon-shaped main pipe is communicated with the heat conduction oil outlet of the heating plate group and the oil channel of at least one heating plate.
Preferably, a baffling welding seam is arranged on the middle position of the heating plate provided with the oil channel.
Preferably, the premixed metal powder heater further comprises an exhaust port.
Preferably, the premixed metal powder heater further comprises a movable overhang disposed on the housing.
Compared with the prior art, the beneficial effects are:
1. no potential safety hazard: the pre-mixed metal powder heater adopts heat conducting oil to exchange heat with the wall between the pre-mixed metal powder, and the heat source and the material are completely separated. Even if the premixed metal powder heater leaks due to abrasion after a plurality of years, only the heat conduction oil is mixed with the premixed metal powder, and no potential safety hazard exists.
2. Uniformly heating metal powder: the heating plate group in the premixing metal powder heater uniformly arranges each heating plate in the equipment and extends into the cone section at the bottom, and the external plate group self-heating bin body and the self-heating cone can heat materials on the bin wall, so that the premixing metal powder can be heated completely and uniformly.
3. The heating area of the same heating volume is increased by 3 times: for traditional electric heating, arrange electric heating wire at the equipment outer wall, and premixed metal powder heater is inside to be covered with storehouse shape heating plate group, and storehouse body wall also forms the group of boards self-heating storehouse body and self-heating cone by the hot plate preparation simultaneously, and heating area directly promotes 3 times.
4. Heating efficiency greatly promotes production more stably: in low-temperature seasons of autumn and winter, the traditional electric heating technology has low production efficiency due to insufficient heating capacity, and accidents such as product cracking and the like occur in subsequent forming and sintering processes. The high-efficiency heat exchange of the premixed metal powder heater with high heat exchange density completely eliminates the problems, and ensures the normal production of the whole production line in low-temperature seasons of autumn and winter.
5. The service life of the die of the powder metallurgy green body is prolonged: because the temperature of the metal powder before entering the die is effectively controlled, the uneven feeding temperature of the metal powder is one of the important factors for damaging the die, the damage rate of the die is obviously reduced due to the even and controllable heating temperature of the metal powder, the service life is obviously prolonged, the production cost is reduced, and the operation time of the device is improved.
Drawings
FIG. 1 is a general diagram of a premixed metal powder heater apparatus.
FIG. 2 is a cross-sectional view of a premixed metal powder heater.
Figure 3 is a view of a heating panel set.
Fig. 4 is a cross-sectional view of a heating plate package.
Fig. 5 is a structural view of the heating plate.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
As shown in fig. 1-5, the premixed metal powder heater includes: the device comprises a shell, a metal powder feeding hole 6 arranged on the shell, a metal powder discharging hole 10 arranged on the shell, a heating plate group heat conduction oil inlet 7 arranged on the shell, a heating plate group heat conduction oil outlet 8 arranged on the shell and a heating plate group 2 arranged in the shell; the heating plate package 2 comprises at least one heating plate 12; an oil channel is arranged in at least one heating plate 12; an oil channel of the heating plate 12 is communicated with a heat conduction oil inlet 7 of the heating plate group; the oil channel of the heating plate 12 is communicated with the heat conducting oil outlet 8 of the heating plate group.
The shell comprises a top cover plate 1, a self-heating cabin body 3 and a self-heating cone 4. The top cover plate 1 is located on the upper portion of the heating plate group 2 and is arranged on the upper portion of the self-heating bin body 3, the heating plate group 2 is arranged in the self-heating bin body 3, the self-heating cone 4 is arranged at the bottom of the self-heating bin body 3, and the movable outer suspension 5 is welded on the upper portion of the outer side of the self-heating bin body 3. The upper part of the top cover plate 1 is provided with a metal powder feed inlet 6, a heating plate group heat conduction oil inlet 7, a heating plate group heat conduction oil outlet 8 and an exhaust port 9. The bottom of the self-heating cone 4 is provided with a discharge hole 10. A material dividing cone is arranged in the self-heating cone 4 and above the discharge hole 10.
And the pipelines at the bottoms of the heating plate group heat conduction oil inlet 7 and the heating plate group heat conduction oil outlet 8 are connected with the flange at the top of the heating plate group 2 through flanges. The heating plate group 2 further comprises an oil inlet semilunar main pipe 14 and an oil outlet semilunar main pipe 15, the oil inlet semilunar main pipe 14 is communicated with a heating plate group heat transfer oil inlet 7 and an oil channel of at least one heating plate 12, and the oil outlet semilunar main pipe 15 is communicated with a heating plate group heat transfer oil outlet 8 and an oil channel of at least one heating plate 12. Heat conducting oil enters the equipment from a heat conducting oil inlet 7 of the heating plate group and flows into an oil inlet half-moon-shaped main pipe 14 at the upper part of the heating plate group 2, and the oil inlet half-moon-shaped main pipe 14 is connected with a plurality of heating plate oil inlets 16. After the oil inlet half-moon-shaped main pipe 14 is filled with heat conducting oil, the heat conducting oil is distributed to enter each heating plate 12 through a heating plate oil inlet 16. The heating plate 12 is provided with a baffling welding line 13, and the baffling welding line 13 is arranged in the middle of the heating plate 12 and divides the upper half part of the heating plate 12 into a left half part and a right half part. The heat transfer oil enters the heating plate 12 through the heating plate oil inlet 16 and then flows through the heating plate internal channel. When the heat transfer oil meets the baffling welding line 13 arranged on the heating plate, the baffling welding line 13 blocks the heat transfer oil at the left half part of the heating plate 12, so that the heat transfer oil continuously flows downwards along the heat transfer oil channel of the heating plate 12 and fills the left half part of the heating plate 12. The heat conducting oil flows into the right half part of the heating plate 12 through the lower heat conducting oil channel 19 at the lower part of the heating plate 12, and flows from bottom to top to fill the right half part of the heating plate 12, and then flows out through the heating plate oil outlet 17. An upper heating plate heat conduction oil channel 18 is also reserved at the top of the heating plate 12, and a small part of heat conduction oil flows from the left half part of the baffling welding line to the right half part through the upper heating plate heat conduction oil channel 18 in the heating plate 12, so that the phenomenon that some parts in the heating plate 12 do not flow is prevented. To ensure no dead zones for the conduction oil to flow. The heat conducting oil flows through the heating plate 12 and then is gathered to the oil outlet half-moon-shaped main pipe 15 at the upper part of the heating plate group 2, and is discharged out of the equipment through the heat conducting oil outlet 8 of the heating plate group.
The self-heating bin body 3 and the self-heating cone 4 are also provided with an inlet and an outlet of heat conduction oil, and can be connected to a heat conduction oil system to heat the metal powder close to the inner wall surface. Self-heating storehouse body 3 has 4 outer walls, and the structure of every outer wall all is similar with the structure of hot plate 12, all inside oil duct that is provided with. The outer wall of the self-heating bin body 3 is provided with a self-heating bin body heat conduction oil inlet 20, a self-heating bin body heat conduction oil outlet 21 and a self-heating bin body baffling welding line 33. The self-heating cartridge body baffling weld 33 divides the oil passage inside the outer wall of the self-heating cartridge body 3 into several zones to prevent flow dead zones. The heat transfer oil is introduced into a heat transfer oil inlet 20 of the self-heating bin body from an external heat transfer oil main pipe, flows from bottom to top through an oil channel which is formed by baffling welding lines and is arranged inside the outer wall of the self-heating bin body 3 to fill the outer wall of the whole self-heating bin body 3, and then flows out from a heat transfer oil outlet 21 of the self-heating bin body.
The heating plates 12 are uniformly arranged and need not be identical in shape, and may have various shapes. As shown in fig. 3 and 4, there are 10 heating plates 12 in total. The two front blocks and the two rear blocks are rectangular, and the middle 6 blocks are in a combined shape of an upper rectangle and a lower trapezoid. And in the 6 combined blocks, the two blocks positioned in the front and the two blocks positioned in the back have smaller height points of the trapezoid in the combined shape, and the two blocks in the middle have larger height points. This is done in order to increase the heating efficiency by letting as many heating plates 12 as possible penetrate into the bottom self-heating cone 4. Of course, other shapes may be designed according to the shape of the self-heating cone 4 and the actual requirements, as long as the heating plate 12 can be extended into the self-heating cone 4.
The self-heating cone 4 has four conical outer walls, the structure of each conical outer wall is similar to that of the heating plate 12, and the outer wall on each conical surface is provided with a self-heating cone heat-conducting oil inlet 22 and a self-heating cone heat-conducting oil outlet 23. Heat conducting oil enters the internal heat conducting oil channel of the conical outer wall from the self-heating cone heat conducting oil inlet 22 and flows to the self-heating cone heat conducting oil outlet 23 from bottom to top to flow out.
After flowing through the powder channel formed by the heating plate group 2 and the self-heating bin body 3, the metal powder materials are gathered in the self-heating cone 4. The lower part of the self-heating cone 4 is provided with a material-dividing cone 11 to ensure the uniform and stable flow of the metal powder in the device without hole flow. The metal powder is heated to a temperature that meets the design requirements and exits the apparatus through a discharge port 10 in the bottom of the apparatus.
Meanwhile, the premixing metal powder heater is combined with the device, and parameter detection and interlocking control are carried out on the process, for example, the metal powder discharging temperature and the heat conducting oil flow are interlocked, so that the accurate control of the metal powder discharging temperature is ensured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A premixed metal powder heater, comprising: the heating plate group heat conduction oil heating device comprises a shell, a metal powder feeding hole arranged on the shell, a metal powder discharging hole arranged on the shell, a heating plate group heat conduction oil inlet arranged on the shell, a heating plate group heat conduction oil outlet arranged on the shell and a heating plate group arranged in the shell;
the heating plate group comprises at least one heating plate;
an oil channel is arranged in at least one heating plate;
the oil channel of the heating plate is communicated with the heat conduction oil inlet of the heating plate group;
and the oil channel of the heating plate is communicated with the heat conduction oil outlet of the heating plate group.
2. The premixed metal powder heater of claim 1, wherein the housing is provided with a housing heat transfer oil inlet and a housing heat transfer oil outlet;
the shell is provided with an oil channel;
the oil channel of the shell is communicated with the shell heat-conducting oil inlet;
and the oil channel of the shell is communicated with the shell heat conduction oil outlet.
3. The premixed metal powder heater of claim 2, wherein said housing is provided with a baffled weld.
4. The premixed metal powder heater of claim 3 wherein said housing comprises a top cover plate, a self-heating cartridge body and a self-heating cone;
the top cover plate is arranged at the upper part of the self-heating bin body, and the self-heating cone is arranged at the bottom of the self-heating bin body;
the self-heating bin body is provided with the shell heat conduction oil inlet, the shell heat conduction oil outlet and the oil channel of the shell;
and/or the self-heating cone is provided with the shell heat conduction oil inlet, the shell heat conduction oil outlet and the oil channel of the shell.
5. The premixed metal powder heater of claim 4, wherein said premixed metal powder heater comprises at least two said heating plates provided with oil passages;
the heating plate provided with the oil channel comprises at least two shapes;
the heating plate provided with the oil channel in at least one shape can extend into the self-heating cone.
6. The premixed metal powder heater of claim 4 wherein said metal powder feed inlet is provided on said top cover plate;
the metal powder discharge port is arranged on the self-heating cone.
7. The premixed metal powder heater of claim 4, wherein the heating plate set conduction oil inlet and the heating plate set conduction oil outlet are both disposed on the top cover plate.
8. The premixed metal powder heater of any one of claims 1 to 7, wherein said heating plate set further comprises an oil inlet meniscus header and an oil outlet meniscus header;
the oil inlet half-moon-shaped main pipe is communicated with the heat conduction oil inlet of the heating plate group and the oil channel of at least one heating plate;
the oil outlet half-moon-shaped main pipe is communicated with the heat conduction oil outlet of the heating plate group and the oil channel of at least one heating plate.
9. The premixed metal powder heater of any one of claims 1 to 7, wherein a baffling weld is provided at a middle position of the heating plate provided with the oil passage.
10. The premixed metal powder heater of any one of claims 1-7 further comprising an exhaust port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920492347.0U CN209811226U (en) | 2019-04-12 | 2019-04-12 | Premixed metal powder heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920492347.0U CN209811226U (en) | 2019-04-12 | 2019-04-12 | Premixed metal powder heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209811226U true CN209811226U (en) | 2019-12-20 |
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ID=68879664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920492347.0U Active CN209811226U (en) | 2019-04-12 | 2019-04-12 | Premixed metal powder heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209811226U (en) |
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2019
- 2019-04-12 CN CN201920492347.0U patent/CN209811226U/en active Active
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