CN216989858U - Ultrasonic vibration suspension powder forming device - Google Patents
Ultrasonic vibration suspension powder forming device Download PDFInfo
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- CN216989858U CN216989858U CN202220383036.2U CN202220383036U CN216989858U CN 216989858 U CN216989858 U CN 216989858U CN 202220383036 U CN202220383036 U CN 202220383036U CN 216989858 U CN216989858 U CN 216989858U
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- ultrasonic
- powder
- die
- ultrasonic wave
- guide hole
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- 239000000843 powder Substances 0.000 title claims abstract description 40
- 239000000725 suspension Substances 0.000 title claims abstract description 13
- 238000000465 moulding Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 abstract description 20
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 11
- 238000005245 sintering Methods 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
The utility model discloses an ultrasonic vibration suspended powder forming device, and relates to the field of sintered neodymium iron boron production. The device comprises a powder forming die, wherein an ultrasonic guide hole is formed in the upper portion of a die side strip of the die, the formed ultrasonic guide hole is higher than the powder filling height, the inner end of the ultrasonic guide hole is communicated with the die cavity of the die, the outer end of the ultrasonic guide hole is fixedly connected with a hollow pipe fitting, the end portion of the hollow pipe fitting is fixedly connected with an ultrasonic vibration device, and the ultrasonic vibration device is controlled by an electronic module to adjust the vibration frequency. The utility model solves the problems of insufficient powder orientation, uneven density graduation and deformation and cracking of the appearance of the sintered blank in the process of sintering neodymium iron boron; at the fixed ultrasonic wave vibrator of mould sidebar upper end trompil, under the superposition in ultrasonic wave and magnetic field, the powder shakes the suspension in the die cavity, obtains higher saturation, and product density distributes more evenly, promotes sintered neodymium iron boron performance and appearance quality by a wide margin.
Description
Technical Field
The utility model relates to the field of sintered neodymium iron boron production, in particular to an ultrasonic vibration suspension powder forming device.
Background
The sintered Nd-Fe-B material has excellent magnetic performance, and is widely applied to various fields such as electro-acoustic, motors, magnetic separation, medical treatment and the like, since this century, the yield of the sintered Nd-Fe-B material in China is rapidly enlarged, the requirements on the product performance are continuously improved, the orientation saturation and the density distribution in the forming process play a crucial role in the performance of the sintered Nd-Fe-B material, the existing forming technology cannot fully orient and saturate in a magnetic field due to the accumulation, friction, agglomeration and the like of powder, the performance of the product is restricted, the density of green bodies is uneven, especially large-size green bodies, the problem of internal cracking and deformation occur after sintering. It is therefore desirable to provide methods or apparatus to address these problems.
Disclosure of Invention
The utility model provides an ultrasonic vibration suspension powder forming device, which aims to solve the problems of insufficient powder orientation, uneven density distribution and deformation and cracking of the appearance of a blank after sintering in the process of forming sintered neodymium iron boron.
The utility model is realized by the following technical scheme: the utility model provides an ultrasonic wave vibrations suspension powder forming device, includes powder forming's mould, open on the mould sidebar upper portion of mould has the ultrasonic wave guide hole, and the ultrasonic wave guide hole of opening is higher than the powder and loads the height, the intracavity intercommunication of the inner die cavity with the mould of ultrasonic wave guide hole, the outer end and a cavity pipe fitting fixed connection in the ultrasonic wave guide hole, the tip and the ultrasonic wave vibrator fixed connection of cavity pipe fitting, vibration frequency is adjusted by electronic module control to ultrasonic wave vibrator.
The utility model relates to an ultrasonic vibration suspension powder forming device, and mainly provides a forming method, in particular to a method for enabling powder in a cavity to be in a vibration suspension state under the superposition effect of a magnetic field and ultrasonic waves by adopting the device so as to finish the orientation and forming process of sintered neodymium-iron-boron powder. The device mainly comprises a die, neodymium iron boron powder is filled in a die cavity of the die and is molded, an ultrasonic wave leading-in hole is formed in the upper portion of a die side strip of the die, ultrasonic waves are led in through the ultrasonic wave leading-in hole and act together with a magnetic field to enable the powder to vibrate and suspend, the ultrasonic wave leading-in hole is higher than the powder filling height, the inner end of the ultrasonic wave leading-in hole is communicated with the die cavity of the die, the outer end of the ultrasonic wave leading-in hole is fixedly connected with a hollow pipe fitting, the end portion of the hollow pipe fitting is fixedly connected with an ultrasonic wave vibrating device, the ultrasonic wave provided by the ultrasonic wave vibrating device is led into the die cavity of the die from the hollow pipe fitting, and the ultrasonic wave vibrating device is controlled by an electronic module to adjust the vibration frequency, so that different requirements are met. The utility model has the following specific operations: the upper part of the side strip of the die is provided with an ultrasonic wave lead-in hole, the height of the ultrasonic wave lead-in hole is higher than the filling height of the powder, then the ultrasonic wave lead-in hole is fixedly connected with a hollow pipe fitting, and the hollow pipe fitting is also fixedly connected with an ultrasonic vibration device. The forming process is as follows: installing a die to a forming press, filling neodymium iron boron powder into a die cavity, starting the press, starting an ultrasonic vibration device after the die cavity is closed (an upper pressing die cannot seal an ultrasonic leading-in hole), and setting a proper vibration frequency; in the process of molding the neodymium iron boron powder, the vibration emitted by the ultrasonic vibration device is transmitted into a mold cavity of the mold; simultaneously magnetizing for orientation, setting magnetizing current, enabling the powder in the die cavity to be in a vibration suspension state under the double effects of a magnetic field and ultrasonic waves, and profiling, thereby finishing the orientation and the forming of the sintered neodymium-iron-boron powder, and closing an ultrasonic vibration device after the profiling size is in place; and finishing the forming process after the pressure maintaining is finished.
Preferably, the hollow pipe fitting is a hollow stainless steel pipe.
Compared with the prior art, the utility model has the following beneficial effects: according to the ultrasonic vibration suspension powder forming device provided by the utility model, under the dual actions of ultrasonic waves and a magnetic field, powder in the sintered neodymium iron boron forming process can be vibrated and suspended in the die cavity, higher saturation is obtained, the product density distribution is more uniform, and the performance and the appearance quality of the sintered neodymium iron boron can be greatly improved.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
The figures are labeled as follows: 1-mould, 2-ultrasonic vibration device, 3-hollow pipe, 4-electronic module, 5-neodymium iron boron powder, 6-ultrasonic leading-in hole and 101-mould side strip.
Detailed Description
The following describes an embodiment of the present invention with reference to the drawings.
The concrete implementation process and effects are described below by one embodiment and one reference example.
Examples
An ultrasonic vibration suspended powder forming device is shown in figures 1 and 2: including powder forming's mould 1, open on mould side strip 101 upper portion of mould 1 has ultrasonic wave guide hole 6, and ultrasonic wave guide hole 6 who opens is higher than the powder and loads the height, 6 inner intercommunications in the die cavity of ultrasonic wave guide hole and mould 1, the outer end and a hollow pipe spare 3 fixed connection in ultrasonic wave guide hole 6, the tip and the 2 fixed connection of ultrasonic wave vibrator of hollow pipe spare 3, vibration frequency is adjusted by electronic module 4 control to ultrasonic wave vibrator 2.
The preferred scheme is adopted in the embodiment: the hollow pipe fitting 3 is a hollow stainless steel pipe.
The specific operation steps of this embodiment are as follows:
firstly, a 45M 100 by 50 by 51 square mould is selected, and an ultrasonic generator is fixed at the upper end of the side strip.
And installing the mold to the molding press.
And thirdly, 45M neodymium iron boron powder is filled in the die cavity.
And fourthly, starting the press, starting the ultrasonic vibration device after the die cavity is closed (the upper die cannot close the ultrasonic guide hole), and setting the vibration frequency to be 18 KHz.
Magnetizing orientation with magnetizing current of 100A.
Sixthly, pressing.
And seventhly, closing the ultrasonic vibration device after the pressing size is in place.
And maintaining the pressure for 10s, and profiling to finish.
45M 100 x 50 x 51 cubes, 500 blocks were formed according to this method.
Reference example (ultrasonic vibrator is not installed on the mould)
The 45M 100 by 50 by 51 square die is selected.
And installing the mold to a molding press.
And thirdly, adding 45M neodymium iron boron powder in the same batch as the embodiment into the die cavity.
Fourthly, the press is started, and the die cavity is closed.
Magnetizing orientation, magnetizing current 100A.
Sixthly, pressing.
Pressing the die in place for 10s, and pressing.
The same sintering process is adopted for sintering for 20 hours in the examples and the reference examples, aging is carried out for 7 hours, and then the materials are taken out. And respectively sampling and detecting the magnetic property to calculate the average value, and processing the other products after conversion to detect the appearance. Two sets of data were compared as follows:
according to the data, the ultrasonic vibration suspension powder forming device provided by the embodiment adopts a forming method of superposing ultrasonic waves and magnetic fields, so that the powder in the die cavity is in a vibration suspension state, the powder orientation obtains higher saturation in the forming process of sintered neodymium iron boron, the product density distribution is more uniform, and the performance and the appearance quality of the sintered neodymium iron boron can be greatly improved.
The scope of the utility model is not limited to the above embodiments, and various modifications and changes may be made by those skilled in the art, and any modifications, improvements and equivalents within the spirit and principle of the utility model should be included in the scope of the utility model.
Claims (2)
1. The utility model provides an ultrasonic wave vibrations suspension powder forming device which characterized in that: including powder molding's mould (1), ultrasonic wave inlet hole (6) have been opened on mould side strip (101) upper portion of mould (1), and ultrasonic wave inlet hole (6) that open are higher than the powder and fill the height, ultrasonic wave inlet hole (6) inner communicates with the die cavity of mould (1) in, the outer end and a cavity pipe fitting (3) fixed connection of ultrasonic wave inlet hole (6), the tip and the ultrasonic vibration device (2) fixed connection of cavity pipe fitting (3), vibration frequency is adjusted by electronic module (4) control to ultrasonic vibration device (2).
2. The ultrasonic vibration suspended powder molding apparatus as claimed in claim 1, wherein: the hollow pipe fitting (3) is a hollow stainless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220383036.2U CN216989858U (en) | 2022-02-25 | 2022-02-25 | Ultrasonic vibration suspension powder forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220383036.2U CN216989858U (en) | 2022-02-25 | 2022-02-25 | Ultrasonic vibration suspension powder forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216989858U true CN216989858U (en) | 2022-07-19 |
Family
ID=82394566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220383036.2U Active CN216989858U (en) | 2022-02-25 | 2022-02-25 | Ultrasonic vibration suspension powder forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216989858U (en) |
-
2022
- 2022-02-25 CN CN202220383036.2U patent/CN216989858U/en active Active
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