CN111360216A - Neodymium iron boron permanent magnet material smelting system - Google Patents
Neodymium iron boron permanent magnet material smelting system Download PDFInfo
- Publication number
- CN111360216A CN111360216A CN202010278348.2A CN202010278348A CN111360216A CN 111360216 A CN111360216 A CN 111360216A CN 202010278348 A CN202010278348 A CN 202010278348A CN 111360216 A CN111360216 A CN 111360216A
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- Prior art keywords
- cooling
- copper roller
- permanent magnet
- magnet material
- scale
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0634—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a casting wheel and a co-operating shoe
Abstract
The invention discloses a neodymium iron boron permanent magnet material smelting system. This neodymium iron boron permanent magnet material system of smelting includes: a smelting furnace; a flow guide groove is arranged at the upstream of the tundish; copper roller two-sided cooling device, it includes: the cooling copper roller is arranged at the downstream of the tundish; the cooling cambered surface is arranged above the surface of the cooling copper roller, and a cambered surface cooling space is formed between the inner wall of the cooling cambered surface and the surface of the cooling copper roller, so that molten steel in the tundish is condensed on the surface of the cooling copper roller and is cooled and thrown into flakes through the cambered surface cooling space; and the crushing device is arranged at the downstream of the copper roller double-sided cooling device. The copper roller double-sided cooling device of the neodymium iron boron permanent magnet material smelting system enables the free surface of the scale to be isolated from the environment in the furnace and cools the free surface of the scale, so that the crystalline structure of the roll surface of the scale and the crystalline structure of the free surface are consistent to the maximum extent, and the crystalline structure of the scale is improved.
Description
Technical Field
The invention relates to the field of neodymium iron boron smelting, in particular to a neodymium iron boron permanent magnet material smelting system.
Background
At present, the key process of producing the known neodymium iron boron permanent magnet material is smelting, wherein the smelting is to smelt, pour and cool the prepared raw materials according to requirements. The existing operation is to cast the smelted molten steel, and cast the molten steel into scales through a cooling copper roller, wherein the cooling effect of the cooling copper roller influences the crystallization state of the scales, and the scales are uniform in thickness and uniform in crystalline structure, so that the subsequent production is facilitated.
The existing production technical conditions are that the melt-spun scales are cooled by cooling the internal circulating water of the copper roller, so that the cooling effect of the surface (roll surface) of the scales tightly attached to the copper roller is good, the crystalline structure is fine and uniform, and the surface (free surface) of the scales deviated from the copper roller is poor in cooling effect and thick in crystalline structure due to the fact that the scales are in a high-temperature environment in a furnace.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a neodymium iron boron permanent magnet material smelting system with a simple and reasonable structure.
In order to achieve the above object, the present invention provides a neodymium iron boron permanent magnet material smelting system, including: a smelting furnace; a flow guide groove is arranged at the upstream of the tundish; copper roller two-sided cooling device, it includes: the cooling copper roller is arranged at the downstream of the tundish; the cooling cambered surface is arranged above the surface of the cooling copper roller, and a cambered surface cooling space is formed between the inner wall of the cooling cambered surface and the surface of the cooling copper roller, so that molten steel in the tundish is condensed on the surface of the cooling copper roller and is cooled and thrown into flakes through the cambered surface cooling space; and the crushing device is arranged at the downstream of the copper roller double-sided cooling device.
In a preferred embodiment, the cooling arc is cooled with circulating water.
In a preferred embodiment, the cooling arc has an angular arc of 30 degrees to 50 degrees.
In a preferred embodiment, the angular arc of the cooling arc is 40 degrees.
In a preferred embodiment, the cooling arc is made of copper.
Compared with the prior art, the copper roller double-side cooling device has the following beneficial effects: this two-sided cooling device of copper roll of neodymium iron boron permanent magnet material system of smelting installs a copper cooling cambered surface outside former cooling copper roll additional, makes the scale free surface cut off with stove internal environment and cools off the scale free surface, makes scale laminating roller face and free surface all receive the cooling when smelting the casting, and furthest makes scale laminating roller face unanimous with the free surface crystallographic structure, has improved the scale crystalline structure, makes the scale crystalline structure more meticulous even.
Drawings
Fig. 1 is a schematic structural diagram of a neodymium iron boron permanent magnet material smelting system according to an embodiment of the invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, the specific structure of the neodymium-iron-boron permanent magnet material smelting system according to the preferred embodiment of the present invention includes: smelting furnace 1, guiding gutter 2, middle package 3, copper roller two-sided cooling device and breaker 6. Wherein, smelting furnace 1 is used for melting back with raw and other materials, and pour the molten steel into guiding gutter 2, and flow into pouring basket 3, pouring basket 3 links to each other with the two-sided cooling device of copper roller, the two-sided cooling device's of copper roller cooling copper roller 4 rotates, molten steel condenses on the 4 surfaces of the cooling copper roller of the two-sided cooling device of copper roller in the 3 middle of the drive, and through the cooling of the 5 inner walls of cooling cambered surface of the two-sided cooling device of copper roller and the cambered surface cooling space cooling between the 4 surfaces of cooling copper roller, the scale is thrown away and is taken into the scale, the scale falls into breaker 6, collect in the sealed can after.
Specifically, the specific structure of the copper roller double-sided cooling device comprises: cooling copper roller 4 and cooling cambered surface 5, wherein, cooling copper roller 4 links to each other with middle package 3, cooling cambered surface 5 is installed in cooling copper roller 4 surperficial tops, form cambered surface cooling space between 5 inner walls of cooling cambered surface and the cooling copper roller 4 surface, the cooling copper roller rotates, molten steel condenses on cooling copper roller 4 surface in 3 middle packages of drive, and through the cooling of cambered surface cooling space between 5 inner walls of cooling cambered surface and cooling copper roller 4 surfaces, the tape-like is got rid of in the cooling of cambered surface cooling space, the scale falls into breaker 6, collect in the sealed tank after the breakage. The surface of the scale roller is cooled during smelting and casting, the crystalline structure of the scale roller is consistent with that of the free surface to the maximum extent, the crystalline structure of the scale is improved, and the crystalline structure of the scale is finer and more uniform.
The cooling copper roller 4 is arranged between the tundish 3 and the crushing device 6, the cooling copper roller is internally cooled by circulating water, the cooling copper roller rotates to drive molten steel in the tundish 3 to condense on the surface of the cooling copper roller 4, the molten steel is cast into scales through the cooling copper roller, and the scales fall into the crushing device 6 and are collected into the sealing tank after being crushed. Wherein, the cooling effect of the surface (roll surface) of the scale close to the copper roll is good, and the crystalline structure is fine and uniform.
The cooling cambered surface 5 is arranged above the surface of the cooling copper roller 4 (on a cambered line from a casting point to an inlet of the crushing device), a cambered surface cooling space is formed between the inner wall of the cooling copper roller 4 and the surface of the cooling copper roller, the cooling copper roller rotates to drive the molten steel in the tundish 3 to condense on the surface of the cooling copper roller 4, and the molten steel is cooled and spun into scales through the cambered surface cooling space.
In an embodiment, the cooling arc surface 5 is cooled by circulating water, and the circulating water circulates in the cooling arc surface 5 to protect the cooling arc surface and further cool the free surface of the scale.
In one embodiment, the arc angle of the cooling arc 5 is 30 degrees to 50 degrees.
In one embodiment, the angular arc of the cooling arc 5 is 40 degrees.
In one embodiment, the cooling arc 5 is made of copper.
Smelting furnace 1 melts back with raw and other materials as required, when reaching the casting requirement, smelting furnace 1 slowly emptys, the guiding gutter 2 is poured into to the molten steel, and it is 3 to flow into the pouring basket, and pouring basket 3 links to each other with cooling copper roller 4, and the cooling copper roller rotates, and the molten steel condenses on cooling copper roller 4 surface in the pouring basket 3 in the drive, and through the cooling of the cambered surface cooling space cooling melt-spun between 5 inner walls of cooling cambered surface and cooling copper roller 4 surface, it turns into the scale to get rid of, and the scale falls into breaker 6, collects in the sealed can after the breakage. Circulating water forms the inner loop through 4 inner water channels of cooling copper roller in the production process, plays the cooling protection to the copper roller, and then cools off scale laminating roller face, and the circulating water is at 5 inner circulations of cooling cambered surface, plays the protection to the cooling cambered surface, and then cools off the scale free surface.
In conclusion, the copper roller double-side cooling device of the neodymium iron boron permanent magnet material smelting system is additionally provided with a copper cooling cambered surface outside an original cooling copper roller, so that the free surface of the scale is separated from the environment in the furnace and is cooled, the roller surface and the free surface of the scale are cooled during smelting and casting, the crystalline tissues of the roller surface and the free surface of the scale are consistent to the maximum extent, the crystalline tissues of the scale are improved, and the crystalline tissues of the scale are more delicate and uniform.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. A neodymium iron boron permanent magnet material system of smelting which characterized in that includes:
a smelting furnace;
a flow guide groove is arranged at the upstream of the tundish;
copper roller two-sided cooling device, it includes: the cooling copper roller is arranged at the downstream of the tundish; the cooling cambered surface is arranged above the surface of the cooling copper roller, and a cambered surface cooling space is formed between the inner wall of the cooling cambered surface and the surface of the cooling copper roller, so that molten steel in the tundish is condensed on the surface of the cooling copper roller and is cooled and thrown into flakes through the cambered surface cooling space; and
and the crushing device is arranged at the downstream of the copper roller double-sided cooling device.
2. The ndfeb permanent magnet material smelting system of claim 1, wherein the cooling arc is cooled with circulating water.
3. The ndfeb permanent magnet material melting system of claim 1, wherein the cooling arc has an angular arc of 30-50 degrees.
4. The ndfeb permanent magnet material melting system of claim 3, wherein the angular arc of the cooling arc is 40 degrees.
5. The ndfeb permanent magnet material melting system of claim 1, wherein the cooling arc is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010278348.2A CN111360216A (en) | 2020-04-10 | 2020-04-10 | Neodymium iron boron permanent magnet material smelting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010278348.2A CN111360216A (en) | 2020-04-10 | 2020-04-10 | Neodymium iron boron permanent magnet material smelting system |
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| Publication Number | Publication Date |
|---|---|
| CN111360216A true CN111360216A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010278348.2A Pending CN111360216A (en) | 2020-04-10 | 2020-04-10 | Neodymium iron boron permanent magnet material smelting system |
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| CN (1) | CN111360216A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134583A (en) * | 2021-03-29 | 2021-07-20 | 江苏普隆磁电有限公司 | Get rid of piece neodymium iron boron and get rid of two-sided cold crystallization structure of area |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050028892A1 (en) * | 2001-12-18 | 2005-02-10 | Shiro Sasaki | Alloy flake for rare earth magnet, production method thereof, alloy powder for rare earth intered magnet, rare earth sintered magnet, alloy powder for bonded magnet and bonded magnet |
| CN104159685A (en) * | 2012-03-08 | 2014-11-19 | 中央电气工业株式会社 | Method for producing alloy piece for rare earth magnet and alloy piece for rare earth magnet produced thereby |
| CN105689660A (en) * | 2016-02-26 | 2016-06-22 | 沈阳广泰真空科技有限公司 | Double-faced cooling multifunctional efficient vacuum rapid-condensing furnace |
| CN206169214U (en) * | 2016-11-15 | 2017-05-17 | 安徽艾贤磁体器件科技有限公司 | Cooling device is used in magnetite production |
| CN107262687A (en) * | 2016-04-08 | 2017-10-20 | 沈阳中北真空技术有限公司 | A kind of manufacture method of vacuum melting rapid hardening equipment and rapid hardening alloy |
| CN206614014U (en) * | 2017-03-28 | 2017-11-07 | 中磁科技股份有限公司 | Get rid of band chill roll system |
-
2020
- 2020-04-10 CN CN202010278348.2A patent/CN111360216A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050028892A1 (en) * | 2001-12-18 | 2005-02-10 | Shiro Sasaki | Alloy flake for rare earth magnet, production method thereof, alloy powder for rare earth intered magnet, rare earth sintered magnet, alloy powder for bonded magnet and bonded magnet |
| CN104159685A (en) * | 2012-03-08 | 2014-11-19 | 中央电气工业株式会社 | Method for producing alloy piece for rare earth magnet and alloy piece for rare earth magnet produced thereby |
| CN105689660A (en) * | 2016-02-26 | 2016-06-22 | 沈阳广泰真空科技有限公司 | Double-faced cooling multifunctional efficient vacuum rapid-condensing furnace |
| CN107262687A (en) * | 2016-04-08 | 2017-10-20 | 沈阳中北真空技术有限公司 | A kind of manufacture method of vacuum melting rapid hardening equipment and rapid hardening alloy |
| CN206169214U (en) * | 2016-11-15 | 2017-05-17 | 安徽艾贤磁体器件科技有限公司 | Cooling device is used in magnetite production |
| CN206614014U (en) * | 2017-03-28 | 2017-11-07 | 中磁科技股份有限公司 | Get rid of band chill roll system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134583A (en) * | 2021-03-29 | 2021-07-20 | 江苏普隆磁电有限公司 | Get rid of piece neodymium iron boron and get rid of two-sided cold crystallization structure of area |
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Application publication date: 20200703 |
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