CN210359248U - Quick dewaxing device of powder metallurgy part - Google Patents
Quick dewaxing device of powder metallurgy part Download PDFInfo
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- CN210359248U CN210359248U CN201920872382.5U CN201920872382U CN210359248U CN 210359248 U CN210359248 U CN 210359248U CN 201920872382 U CN201920872382 U CN 201920872382U CN 210359248 U CN210359248 U CN 210359248U
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Abstract
The utility model discloses a quick dewaxing device of powder metallurgy part, include: a heating chamber, the top of which is provided with a heating part and a separation plate; the heating part comprises a plurality of perforated pipes which are arranged in parallel and at intervals, two ends of each perforated pipe are respectively provided with a flame nozzle, and the flame nozzles ignite fuel and guide flame to spray into the perforated pipes; the division plate is arranged below the heating part in parallel at intervals and adopts a porous structure. The utility model adopts the perforated pipe and the isolation board, compared with the mode of directly adopting the nozzle to burn in the traditional process, the utility model can reduce the decarburization caused by directly burning the flame on the product; the flame nozzle sprays flame from two ends of the porous pipe to the middle to realize heat supply, so that the heat distribution is more uniform, and decarburization caused by overhigh local heating temperature is avoided.
Description
Technical Field
The utility model belongs to powder metallurgy part dewaxing sintering field, specifically speaking relate to a quick dewaxing device of powder metallurgy part.
Background
Organic lubricants are added into powder metallurgy parts in the pressing process, and the organic lubricants are beneficial to improving the pressing density in the pressing process and lubricating a die. Because the components in the lubricant can influence the sintered structure, the added organic lubricant needs to be removed before sintering, the lubricant is generally decomposed by heating the electric heating wire in the current organic lubricant removing mode, however, the electric heating wire is not uniform in heating, the local heating temperature is too high, the decarburization is easily caused, and the problem of too high energy consumption is still to be solved.
Disclosure of Invention
The utility model discloses a solve the problem that prior art exists, provide a quick dewaxing device of powder metallurgy part simple structure, the installation of being convenient for is maintained.
The purpose of the utility model can be realized by the following technical proposal: a powder metallurgy part rapid dewaxing device comprises:
a heating chamber, the top of which is provided with a heating part and a separation plate;
the heating part comprises a plurality of perforated pipes which are arranged in parallel and at intervals, two ends of each perforated pipe are respectively provided with a flame nozzle, and the flame nozzles ignite fuel and guide flame to spray into the perforated pipes;
the division plate is arranged below the heating part, a certain distance is formed between the division plate and the heating part, and the division plate is of a porous structure.
On the basis of the above scheme and as a preferable scheme of the scheme: the number of the porous pipes is 2-10.
On the basis of the above scheme and as a preferable scheme of the scheme: the number of the porous pipes is 4.
On the basis of the above scheme and as a preferable scheme of the scheme: the porous pipe is made of high-temperature-resistant stainless steel or ceramic.
On the basis of the above scheme and as a preferable scheme of the scheme: the isolation plate is made of high-temperature-resistant stainless steel or ceramic.
On the basis of the above scheme and as a preferable scheme of the scheme: the temperature of the heating cavity is 650-750 ℃.
On the basis of the above scheme and as a preferable scheme of the scheme: the fuel is propane or natural gas.
Compared with the prior art, the utility model outstanding and profitable technological effect is: the utility model adopts the perforated pipe and the isolation board, compared with the mode of directly adopting the nozzle to burn in the traditional process, the utility model can reduce the decarburization caused by directly burning the flame on the product; the isolation plate adopts a porous structure, and simultaneously, the defects of poor heat conductivity and excessive heat loss caused by adopting a non-porous plate are avoided; the porous pipe enables gas exchange between the inside and the outside of the pipe through a porous structure, and maintains the efficiency of flame combustion in the pipe and heat dissipation to the outside of the pipe; flame nozzles are respectively arranged at two ends of each perforated pipe, flame is sprayed from the two ends to the middle part to realize heat supply, so that heat distribution is more uniform, and decarburization caused by overhigh local heating temperature is avoided.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the flame ejection direction.
1. Perforated pipe 2, division board 3, flame nozzle.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
Example 1
A powder metallurgy part rapid dewaxing device as shown in fig. 1 comprises:
a heating chamber, the top of which is provided with a heating part and a separation plate;
the heating part comprises 2-10 perforated pipes 1 which are arranged in parallel and at intervals, two ends of each perforated pipe 1 are respectively provided with a flame nozzle 3, and the flame nozzles 3 ignite fuel and guide flame to spray towards the insides of the perforated pipes 1;
the isolation plate 2 is arranged below the heating part, a certain distance is reserved between the isolation plate 2 and the heating part, and the isolation plate 2 is of a porous structure.
The utility model adopts the perforated pipe as the combustion chamber, and adopts the isolation plate to isolate the perforated pipe from the workpiece, so that compared with the traditional process which directly adopts the nozzle combustion mode, the utility model can reduce the decarbonization caused by the direct combustion of flame on the product; the heating part and the partition plate are uniformly distributed at the top of the heating cavity and are fixed through the bracket, and the workpiece is fixedly arranged below the partition plate, so that the heating device is simple in structure, convenient to install and maintain and low in cost; the isolation plate adopts a porous structure, and simultaneously, the defects of poor heat conductivity and excessive heat loss caused by adopting a non-porous plate are avoided; the porous pipe enables gas exchange between the inside and the outside of the pipe through a porous structure, and maintains the efficiency of flame combustion in the pipe and heat dissipation to the outside of the pipe; the both ends of every perforated pipe are provided with the flame nozzle respectively, and the flame nozzle is inside towards the perforated pipe mouth of pipe setting and all spouting the perforated pipe with flame, and the heating mode of spraying flame by both ends to the centre makes heat distribution more even, avoids the decarbonization that local heating temperature is too high to cause.
Preferably, the perforated pipe 1 is made of high-temperature-resistant stainless steel, so that the loss of the perforated pipe in a high-temperature environment is reduced, and the service life of the perforated pipe is prolonged.
Preferably, the isolation plate 2 is made of ceramic materials, and the high-temperature resistance of the ceramic materials is utilized to reduce the loss of the isolation plate in a high-temperature environment and prolong the service life of the isolation plate.
Further, the temperature of the heating cavity is 650-750 ℃. At this temperature, the lubricant can be effectively decomposed to achieve dewaxing and to avoid decarburization.
Further, the fuel is propane. Propane can produce some carbon potentials when burning, adjusts in real time through the oxygen probe, can further avoid the in-process of dewaxing to take place the decarbonization, and the energy consumption reduces simultaneously, is favorable to reduce cost.
Example 2
A powder metallurgy part rapid dewaxing device as shown in fig. 1 comprises:
a heating chamber, the top of which is provided with a heating part and a separation plate;
the heating part comprises four perforated pipes 1 which are arranged in parallel and at intervals, two ends of each perforated pipe 1 are respectively provided with a flame nozzle 3, and the flame nozzles 3 ignite fuel and guide flame to spray into the perforated pipes 1;
the isolation plate 2 is arranged below the heating part, a certain distance is reserved between the isolation plate 2 and the heating part, and the isolation plate 2 is of a porous structure.
The utility model adopts the perforated pipe as the combustion chamber, and adopts the isolation plate to isolate the perforated pipe from the workpiece, so that compared with the traditional process which directly adopts the nozzle combustion mode, the utility model can reduce the decarbonization caused by the direct combustion of flame on the product; the heating part and the partition plate are uniformly distributed at the top of the heating cavity and are fixed through the bracket, and the workpiece is fixedly arranged below the partition plate, so that the heating device is simple in structure, convenient to install and maintain and low in cost; the isolation plate adopts a porous structure, and simultaneously, the defects of poor heat conductivity and excessive heat loss caused by adopting a non-porous plate are avoided; the porous pipe enables gas exchange between the inside and the outside of the pipe through a porous structure, and maintains the efficiency of flame combustion in the pipe and heat dissipation to the outside of the pipe; the both ends of every perforated pipe are provided with the flame nozzle respectively, and the flame nozzle is inside towards the perforated pipe mouth of pipe setting and all spouting the perforated pipe with flame, and the heating mode of spraying flame by both ends to the centre makes heat distribution more even, avoids the decarbonization that local heating temperature is too high to cause.
Preferably, the porous pipe 1 is made of ceramic materials, and the high-temperature resistance of the ceramic materials is utilized to reduce the loss of the porous pipe in a high-temperature environment and prolong the service life of the porous pipe.
Preferably, the isolation plate 2 is made of high-temperature-resistant stainless steel, so that the loss of the isolation plate in a high-temperature environment is reduced, and the service life of the isolation plate is prolonged.
Further, the temperature of the heating cavity is 650-750 ℃. At this temperature, the lubricant can be effectively decomposed to achieve dewaxing and to avoid decarburization.
Further, the fuel is natural gas. The natural gas can produce some carbon potentials when burning, adjusts in real time through the oxygen probe, can further avoid the in-process of dewaxing to take place the decarbonization, and the energy consumption reduces simultaneously, is favorable to reducing the cost.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a quick dewaxing device of powder metallurgy part which characterized in that includes:
a heating chamber, the top of which is provided with a heating part and a separation plate;
the heating part comprises a plurality of perforated pipes which are arranged in parallel and at intervals, two ends of each perforated pipe are respectively provided with a flame nozzle, and the flame nozzles ignite fuel and guide flame to spray into the perforated pipes;
the division plate is arranged below the heating part, a certain distance is formed between the division plate and the heating part, and the division plate is of a porous structure.
2. The powder metallurgy part rapid dewaxing device of claim 1, wherein: the number of the porous pipes is 2-10.
3. The powder metallurgy part rapid dewaxing device of claim 1, wherein: the number of the porous pipes is 4.
4. The powder metallurgy part rapid dewaxing device of claim 1, wherein: the porous pipe is made of high-temperature-resistant stainless steel or ceramic.
5. The powder metallurgy part rapid dewaxing device of claim 1, wherein: the isolation plate is made of high-temperature-resistant stainless steel or ceramic.
6. The powder metallurgy part rapid dewaxing apparatus of any one of claims 1 to 5, wherein: the fuel is propane or natural gas.
7. The powder metallurgy part rapid dewaxing apparatus of any one of claims 1 to 5, wherein: the temperature of the heating cavity is 650-750 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920872382.5U CN210359248U (en) | 2019-06-11 | 2019-06-11 | Quick dewaxing device of powder metallurgy part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920872382.5U CN210359248U (en) | 2019-06-11 | 2019-06-11 | Quick dewaxing device of powder metallurgy part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210359248U true CN210359248U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920872382.5U Active CN210359248U (en) | 2019-06-11 | 2019-06-11 | Quick dewaxing device of powder metallurgy part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210359248U (en) |
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2019
- 2019-06-11 CN CN201920872382.5U patent/CN210359248U/en active Active
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