CN202461469U - Pouring tundish for neodymium iron boron vacuum strip-spinning smelting furnace - Google Patents
Pouring tundish for neodymium iron boron vacuum strip-spinning smelting furnace Download PDFInfo
- Publication number
- CN202461469U CN202461469U CN2012200634997U CN201220063499U CN202461469U CN 202461469 U CN202461469 U CN 202461469U CN 2012200634997 U CN2012200634997 U CN 2012200634997U CN 201220063499 U CN201220063499 U CN 201220063499U CN 202461469 U CN202461469 U CN 202461469U
- Authority
- CN
- China
- Prior art keywords
- tundish
- iron boron
- neodymium iron
- smelting furnace
- cast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 25
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000003723 Smelting Methods 0.000 title claims abstract description 16
- 238000009987 spinning Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 claims abstract description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 239000010431 corundum Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 7
- 239000000956 alloy Substances 0.000 abstract description 7
- 238000009749 continuous casting Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 229910000521 B alloy Inorganic materials 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Abstract
The utility model discloses a pouring tundish for a neodymium iron boron vacuum strip-spinning smelting furnace, which comprises a pouring tundish upper bag and a sprue bottom plate, wherein the sprue bottom plate is arranged on an outlet of the lower end of the pouring tundish upper bag. The pouring tundish also comprises a temperature measuring device, wherein the temperature measuring device comprises a thermoelectric couple, a thermoelectric couple protecting pipe and a temperature displaying and recording device; the lower end of the thermoelectric couple is placed in the thermoelectric couple protecting pipe, the upper end of the thermoelectric couple is connected with the temperature displaying and recording device through a lead, the lower end of the thermoelectric couple protecting pipe extends into the sprue bottom plate, the pouring tundish upper bag, the sprue bottom plate, the thermoelectric couple and the thermoelectric couple protecting pipe are arranged in the vacuum smelting furnace, and the temperature displaying and recording device is arranged outside the vacuum smelting furnace. According to the pouring tundish for the neodymium iron boron vacuum strip-spinning smelting furnace, the temperature of neodymium iron boron molten alloy can be measured in real time in a pouring and continuous casting process, and the consistency of magnetic performance of a neodymium iron boron magnet is ensured.
Description
Technical field
The utility model relates to a kind of process units of alloy, is specifically related to a kind of process units of sintered Nd-Fe-B permanent magnet.
Background technology
The distribution of metallographic structure, crystallization thickness and rich rare earth phase that the band alloy is got rid of in neodymium iron boron vacuum melting is very big to performance of sintered Nd-Fe-B permanent magnetic material influence, and desirable alloy metallographic structure is that the column crystal of homogeneous grain size, rich rare earth prolong evenly distribute non-agglomerate, no α-Fe of crystal boundary mutually and exist mutually.
On the tundish of the molten spun furnace of neodymium iron boron vacuum refining in the past the molten steel temperature measuring equipment is not set; Only control the temperature of molten steel in the crucible; Molten steel waters out from crucible, and middle the contact with continuous casting copper roller of flowing through carries out having thermal loss before the continuous casting, and the Nd Fe B alloys molten steel temperature is reduced; And the different thermal loss of environment temperature are also different, cause the temperature of Nd Fe B alloys molten steel in the tundish to produce fluctuation.The temperature of Nd Fe B alloys molten steel is the key process parameter that influences the Nd Fe B alloys metallographic structure in the tundish.Thereby with the magnetic property characteristic of the sintered Nd-Fe-B permanent magnet of the spun furnace of neodymium iron boron vacuum melting in the past tundish production with season environment temperature variation fluctuate, long-term consistency is bad.
The utility model content
The purpose of the utility model provides a kind of neodymium iron boron vacuum and gets rid of the band smelting furnace with the cast tundish; The temperature of Nd Fe B alloys liquid when it can measure the cast continuous casting; With the heating power of timely adjustment crucible, reduce because of variation of ambient temperature to the conforming influence of sintered NdFeB product magnetic property.
To achieve these goals; The technical solution of the utility model is: a kind of neodymium iron boron vacuum is got rid of the band smelting furnace with the cast tundish, comprises bag, cast gate base plate on the cast tundish, and the cast gate base plate is located at the exit, lower end of wrapping on the cast tundish; Wherein, Also comprise temperature measuring equipment, temperature measuring equipment comprises that thermocouple, protecting tube, temperature show tape deck, and the thermocouple lower end is positioned in the protecting tube; The upper end connects temperature through lead and shows tape deck; The protecting tube lower end is stretched in the cast gate base plate, and bag, cast gate base plate, thermocouple, protecting tube all are located in the vacuum furnace on the cast tundish, and temperature demonstration tape deck is located at outside the vacuum furnace.
The utility model neodymium iron boron vacuum is got rid of the band smelting furnace with the cast tundish, and wherein, said cast gate plate upper surface is provided with fixed mount, and the two stands of said fixed mount bottom surface is bonded on the cast gate base plate, and said protecting tube is arranged on the fixed mount.
The utility model neodymium iron boron vacuum is got rid of the band smelting furnace with the cast tundish, and wherein, said protecting tube adopts corundum material to process.
After adopting such scheme, the utility model neodymium iron boron vacuum is got rid of the band smelting furnace with pouring into a mould tundish owing to being provided with temperature measuring equipment, therefore in the cast casting process, can measure the temperature of Nd Fe B alloys liquid in real time, guarantees the uniformity of the magnetic property of Sintered NdFeB magnet.
Description of drawings
Fig. 1, the 2nd, the utility model neodymium iron boron vacuum is got rid of the structural representation of band smelting furnace with the cast tundish.
The specific embodiment
As shown in Figure 1; The utility model neodymium iron boron vacuum get rid of the band smelting furnace with the cast tundish comprise that cast wraps 1 on the tundish, cast gate base plate 2, thermocouple 3, protecting tube 4 and temperature show tape deck, cast gate base plate 2 is located at and is wrapped 1 exit, lower end on the cast tundish, is respectively equipped with side plate on along its length the dual-side on the cast gate base plate 2; Cast gate base plate 2 upper surfaces are provided with fixed mount 5; Fixed mount 5 is processed by lightweight alumina fibre refractory material, and the two stands of fixed mount 5 bottom surfaces is bonded on the cast gate base plate 2, and thermocouple 3 lower ends are positioned in the protecting tube 4; The upper end connects temperature through lead and shows tape deck; Protecting tube 4 is arranged on the fixed mount 5, and protecting tube 4 adopts corundum materials to process, and its lower end is stretched in the cast gate base plate 2; Cast wraps 1 on the tundish, cast gate base plate 2, thermocouple 3, protecting tube 4, fixed mount 5 all are located in the vacuum furnace, and temperature shows that tape deck is located at outside the vacuum furnace.
Nd Fe B alloys molten steel in the melting kettle is poured into and wraps in 1 on the tundish; Flow in the cast gate base plate 2, be poured into the alloy sheet that obtains the metallographic structure favorable and stable on the continuous casting copper rod 6 through cast gate base plate 2, protecting tube 4 touches the alloy molten steel; At this moment thermocouple 3 records the temperature of alloy molten steel and transfers to temperature and shows on the tape deck; According to the temperature data that records, the heating power of melting kettle in the adjustment casting process, with the temperature fluctuation of Nd Fe B alloys molten steel in the control tundish less than 10; Thereby obtain to have the Nd Fe B alloys of good, stable crystalline structure, produce the high performance sintered neodymium-iron-boron permanent magnet of stable performance.
The above embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that the common engineers and technicians in this area make the technical scheme of the utility model all should fall in the protection domain that claims of the utility model confirm.
Claims (3)
1. a neodymium iron boron vacuum is got rid of the band smelting furnace with the cast tundish; Comprise bag (1), cast gate base plate (2) on the cast tundish; Cast gate base plate (2) is located at the exit, lower end of bag (1) on the cast tundish; It is characterized in that: comprise that also temperature measuring equipment, temperature measuring equipment comprise that thermocouple (3), protecting tube (4) and temperature show tape deck, thermocouple (3) lower end is positioned in the protecting tube (4); The upper end connects temperature through lead and shows tape deck; Protecting tube (4) lower end is stretched in the cast gate base plate (2), and bag (1), cast gate base plate (2), thermocouple (3), protecting tube (4) all are located in the vacuum furnace on the cast tundish, and temperature demonstration tape deck is located at outside the vacuum furnace.
2. neodymium iron boron vacuum as claimed in claim 1 is got rid of the band smelting furnace with the cast tundish; It is characterized in that: said cast gate base plate (2) upper surface is provided with fixed mount (5); The two stands of said fixed mount (5) bottom surface is bonded on the cast gate base plate (2), and said protecting tube (4) is arranged on the fixed mount (5).
3. neodymium iron boron vacuum as claimed in claim 1 is got rid of the band smelting furnace with the cast tundish, it is characterized in that: said protecting tube (4) adopts corundum material to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200634997U CN202461469U (en) | 2012-02-24 | 2012-02-24 | Pouring tundish for neodymium iron boron vacuum strip-spinning smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200634997U CN202461469U (en) | 2012-02-24 | 2012-02-24 | Pouring tundish for neodymium iron boron vacuum strip-spinning smelting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202461469U true CN202461469U (en) | 2012-10-03 |
Family
ID=46909667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200634997U Expired - Lifetime CN202461469U (en) | 2012-02-24 | 2012-02-24 | Pouring tundish for neodymium iron boron vacuum strip-spinning smelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202461469U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317126A (en) * | 2013-06-05 | 2013-09-25 | 爱科科技有限公司 | Tundishes and casting method for NdFeB (Neodymium Ferrum Boron) alloy casting pieces by using same |
| CN113560515A (en) * | 2021-06-21 | 2021-10-29 | 杭州电子科技大学 | Tundish for rare earth magnetic material rapid-hardening casting belt and casting method |
-
2012
- 2012-02-24 CN CN2012200634997U patent/CN202461469U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317126A (en) * | 2013-06-05 | 2013-09-25 | 爱科科技有限公司 | Tundishes and casting method for NdFeB (Neodymium Ferrum Boron) alloy casting pieces by using same |
| CN113560515A (en) * | 2021-06-21 | 2021-10-29 | 杭州电子科技大学 | Tundish for rare earth magnetic material rapid-hardening casting belt and casting method |
| CN113560515B (en) * | 2021-06-21 | 2023-01-03 | 杭州电子科技大学 | Tundish for rare earth magnetic material rapid-hardening casting belt and casting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |