CN1657642A - Ferro-aluminium-boron alloy and its production method - Google Patents
Ferro-aluminium-boron alloy and its production method Download PDFInfo
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- CN1657642A CN1657642A CN 200410039185 CN200410039185A CN1657642A CN 1657642 A CN1657642 A CN 1657642A CN 200410039185 CN200410039185 CN 200410039185 CN 200410039185 A CN200410039185 A CN 200410039185A CN 1657642 A CN1657642 A CN 1657642A
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- boron
- ferro
- granularity
- less
- aluminium
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- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 229910000521 B alloy Inorganic materials 0.000 title claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- 239000004411 aluminium Substances 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004327 boric acid Substances 0.000 claims abstract description 8
- 229910052796 boron Inorganic materials 0.000 claims description 57
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 31
- 238000003723 Smelting Methods 0.000 claims description 17
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 239000000571 coke Substances 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 238000010891 electric arc Methods 0.000 claims description 5
- 239000003610 charcoal Substances 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 abstract description 17
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 229910021538 borax Inorganic materials 0.000 abstract description 3
- 239000004328 sodium tetraborate Substances 0.000 abstract description 3
- 235000010339 sodium tetraborate Nutrition 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 abstract 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 16
- 238000005204 segregation Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
An AlFeB alloy used for preparing NdFeB material with high quality and output contains B (12-23 wt.%), Fe (60-84) and Al (4-21), and is prepared from industrial pure aluminium, industrial pure iron, low-carbon steel, and borax or industrial pure boric acid. Its preparing process is also disclosed.
Description
Technical field
The present invention relates to a kind of alloy, relate in particular to a kind of ferrous alloy, particularly a kind of ferrous alloy that contains aluminium, boron.
Background technology
Ferro-boron is a main raw material of producing Nd-Fe-Bo permanent magnet material.When producing neodymium iron boron, because the degree of segregation of the boron of ferro-boron is higher, the amount of the boron that the actual amount of boron and boron-containing quantity by ferro-boron calculate in the used ferro-boron has than mistake.Because the degree of segregation of the boron of ferro-boron is at random, the above-mentioned error that is produced is uncertain, so the amount of boron has uncertainty in the neodymium iron boron production process.This will directly influence the quality of neodymium iron boron, and the magnetic energy level reduction as product also can increase slag simultaneously, reduces the volume recovery of neodymium iron boron.Because the fusing point of ferro-boron is higher, greater than 1400 ℃, can produce the segregation of boron in the production of neodymium iron boron in addition, influence the quality of neodymium iron boron, the time that neodymium iron boron production is needed is long, and consumed power is many.
Summary of the invention
The raw material of the object of the present invention is to provide a kind of degree of segregation of boron little, low-melting alloy replacing ferro-boron being done neodymium iron boron, thereby overcome with ferro-boron and do the shortcoming that raw material exists, the quality and the volume recovery of neodymium iron boron can not only be improved, also the production time can be shortened, save energy.
Ferro-aluminum boron alloy of the present invention, its component composition comprises by weight percentage:
Boron 8-23%;
Iron 56-88%;
Aluminium 3-22%;
The weight of aluminium is the 20%-99% of the weight of boron.
Ferro-aluminum boron alloy of the present invention, its preferred ingredient composition comprises by weight percentage:
Boron 12-23%;
Iron 60-84%;
Aluminium 4-21%;
The weight of aluminium is the 20%-99% of the weight of boron.
The fusing point of ferro-aluminum boron alloy of the present invention is about 1100 ℃-1350 ℃, than low about 100 ℃-300 ℃ of the fusing point of ferro-boron.When the boron-containing quantity of ferro-boron and ferro-aluminum boron alloy was identical, the part iron that the ferro-aluminum boron alloy is equivalent in the ferro-boron was substituted by aluminium, and the fusing point of aluminium is low, and is active strong, thereby the distribution uniform of boron in the ferro-aluminum boron alloy, and the degree of segregation of boron reduces greatly than ferro-boron.
The raw material of production ferro-aluminum boron alloy of the present invention adopts fine aluminium (generally adopting technical pure), pure iron (generally adopting technical pure) and soft steel finished product or waste material, borax or boric acid (generally adopting technical pure).Or to adopt ferro-boron and fine aluminium (generally adopting technical pure) be raw material.
Adopting ferro-aluminum boron alloy of the present invention is the raw material production neodymium iron boron, has not only improved the quality of neodymium iron boron, and has improved the volume recovery of neodymium iron boron, has shortened the production time simultaneously, has saved the energy greatly.
Another object of the present invention provides the production method of ferro-aluminum boron.
The production method of ferro-aluminum boron of the present invention comprises:
One, adopting aluminium, iron, borax or boric acid is the step of the production method of raw material:
1, boric acid is dehydrated into behind the boric anhydride brokenly, granularity is less than 50mm;
2, be doubly the wood chip of 1.5-1.9, granularity of boric anhydride refinery coke or charcoal with required above-mentioned broken boric anhydride, granularity less than 30mm and weight less than 30mm, and the carbon content of refinery coke or charcoal and wood chip be boric anhydride weight 26%, granularity drops in the electric arc furnace after less than the aluminium thorough mixing of 20mm less than the iron of 30mm or soft steel waste material, granularity;
3, energising melting, Control for Kiln Temperature is at 1800 ℃-2300 ℃, and smelting time is 4-8 hour;
4, tapping casting moulding.
Two, adopting ferro-boron, aluminium is that the production method of raw material comprises the following steps:
1, ferro-boron, the granularity of required granularity less than 50mm dropped in the intermediate frequency smelting furnace less than the aluminium of 50mm;
2, energising melting, Control for Kiln Temperature is at 1000 ℃-1600 ℃, and smelting time is 1-4 hour;
3, tapping casting moulding.
In above-mentioned two kinds of production methods, the tapping casting moulding can be adopted the water-cooled cast molding device or get rid of sheet, gets rid of carrying equipment, and the ferro-aluminum boron of coming out of the stove can cool off fast, helps to reduce the degree of segregation of its boron.
Raw material required for the present invention all has market sale.Get rid of sheet equipment and can arrive the purchase of Shenyang Zhong Bei vacuum apparatus company limited, get rid of carrying equipment and can arrive the machine works's purchase of the pool, Zhang, west, Xishan, Jiangsu city.
Embodiment
To boron-containing quantity be that 18.94% ferro-boron and boron-containing quantity are 18.94%, aluminum content is that 16.5% ferro-aluminum boron adopts 9 samplings, promptly along rectangle finished product ingot casting diagonal lines get (A) in the arm of angle portion, in (B), (C) down; In in the heart (D), in (E), down (F); (G) in another arm of angle portion, in (H), (I) 9 points down, as follows through the result of laboratory test of chemical analysis each point boron-containing quantity:
| Title | ?????A | ?????B | ?????C | ?????D | ?????E | ?????F | ?????G | ?????H | ?????I |
| Ferro-boron | ???19.81％ | ???17.90％ | ???18.85％ | ???20.01％ | ???18.12％ | ???19.02％ | ???19.73％ | ???18.06％ | ???18.95％ |
| Ferro-aluminum boron | ???18.99％ | ???18.89％ | ???18.95％ | ???18.99％ | ???18.88％ | ???18.96％ | ???18.98％ | ???18.85％ | ???18.94％ |
From above-mentioned result of laboratory test as can be seen ferro-boron each point boron-containing quantity differ greatly, departure is more.The boron-containing quantity difference of ferro-aluminum boron each point is little, and departure is less, and the product boron-containing quantity is more even.The general product analysis test sheet that provides to the user is as the criterion with mean value.
Use same 25kg vacuum melting furnace to produce neodymium iron boron, press N
35Level specification batching, its boron-containing quantity is provided by ferro-boron and ferro-aluminum boron respectively, and each produces 3 stoves, and its condition of production, product performance are listed as follows:
| Raw material | Ferro-boron | Ferro-aluminum boron | |||||
| The neodymium iron boron specification | ??????????????N 35Level | ??????????????N 35Level | |||||
| Heat (batch) number | ????1 | ????2 | ????3 | ????1 | ????2 | ????3 | |
| Smelting temperature (℃) | ????????????1300-1600 | ????????????1100-1450 | |||||
| Smelting time (minute) | ????35 | ????36 | ????38 | ????30 | ????29 | ????28 | |
| (kg) weighs after the cast molding | ????22.3 | ????22.6 | ????22.4 | ????22.8 | ????22.9 | ????22.7 | |
| Performance behind the neodymium iron boron powder process forming and sintering | Remanent magnetism (KGs) | ????11.9 | ????12.0 | ????12.3 | ????12.5 | ????13.2 | ????13.7 |
| Coercive force (Oe) | ????11800 | ????11900 | ????11700 | ????12000 | ????12400 | ????12700 | |
From the result of last table as seen, it is shorter and improved product performance than the temperature time low, melting of the volume recovery height that uses ferro-boron, melting to use ferro-aluminum boron to produce neodymium iron boron.
Embodiment 1
(1) with boron-containing quantity be 23%, granularity drops in the intermediate frequency smelting furnace less than 50mm commercial-purity aluminium 20kg for ferro-boron 100kg, the granularity less than 50mm;
(2) energising melting, 1500 ℃ of furnace temperature, smelting time is 2 hours;
(3) coming out of the stove, is the water-cooled cast molding device cast molding of 50mm with long 1m, wide 0.5m, template spacing.
Embodiment 2
(1) with boron-containing quantity be 18%, granularity drops in the intermediate frequency smelting furnace less than 50mm commercial-purity aluminium 5.5kg for ferro-boron 100kg, the granularity less than 50mm;
(2) energising melting, 1450 ℃ of furnace temperature, smelting time is 3 hours;
(3) come out of the stove, with getting rid of sheet equipment, the thick 1mm of product, long 50mm, wide 30mm.
Embodiment 3
(1) with boron-containing quantity be 21%, granularity drops in the intermediate frequency smelting furnace less than 50mm commercial-purity aluminium 12.5kg for ferro-boron 100kg, the granularity less than 50mm;
(2) energising melting, 1400 ℃ of furnace temperature, smelting time is 4 hours;
(3) come out of the stove, with getting rid of carrying equipment, the thick 0.1mm of product, wide 50mm.
Embodiment 4
(1) boric acid put into rotary kiln be dehydrated into boric anhydride after, be crushed to granularity less than 50mm;
(2) above-mentioned broken boric anhydride 100kg, granularity are dropped in the electric arc furnace after less than the wood chip 187kg thorough mixing of 30mm and carbon containing 5% less than the refinery coke 17kg of 30mm and carbon containing 98%, granularity less than 20mm commercial-purity aluminium 22kg, granularity less than 30mm soft steel waste material 83kg, granularity;
(3) energising melting, 1900 ℃ of furnace temperature, smelting time 6 hours;
(4) coming out of the stove, is the water-cooled cast molding device cast molding of 50mm with long 1m, wide 0.5m, template spacing.
Embodiment 5
(1) boric acid put into rotary kiln be dehydrated into boric anhydride after, be crushed to granularity less than 50mm;
(2) above-mentioned broken boric anhydride 100kg, granularity are dropped in the electric arc furnace after less than the wood chip 187kg thorough mixing of 30mm and carbon containing 5% less than 30mm and carbon containing 98% refinery coke 17kg, granularity less than 20mm commercial-purity aluminium 15kg, granularity less than 30mm soft steel waste material 168kg, granularity;
(3) energising melting, 2000 ℃ of furnace temperature, smelting time 6 hours;
(4) come out of the stove, with getting rid of sheet equipment, the thick 1mm of product, long 50mm, wide 30mm.
Embodiment 6
(1) boric acid put into rotary kiln be dehydrated into boric anhydride after, be crushed to granularity less than 50mm;
(2) above-mentioned broken boric anhydride 100kg, granularity are dropped in the electric arc furnace after less than the wood chip 187kg thorough mixing of 30mm and carbon containing 5% less than the refinery coke 17kg of 30mm and carbon containing 98%, granularity less than 20mm commercial-purity aluminium 7kg, granularity less than 30mm soft steel waste material 120kg, granularity.
(3) energising melting, 2200 ℃ of furnace temperature, smelting time 6 hours;
(4) come out of the stove, with getting rid of carrying equipment, the thick 0.1mm of product, wide 50mm.
Claims (6)
1. ferro-aluminum boron alloy is characterized in that by weight percentage component is formed to comprise:
Boron 8-23%;
Iron 56-88%;
Aluminium 3-22%;
The weight of aluminium is the 20%-99% of the weight of boron.
2. ferro-aluminum boron alloy according to claim 1 is characterized in that:
Boron 12-23%;
Iron 60-84%;
Aluminium 4-21%.
3. according to claim 1 or 2 described ferro-aluminum boron alloys, the raw material that it is characterized in that described iron, boron is a ferro-boron.
4. according to claim 1 or 2 described ferro-aluminum boron alloys, it is characterized in that production method comprises the following steps:
(1) boric acid is dehydrated into behind the boric anhydride brokenly, granularity is less than 50mm;
(2) be doubly the wood chip of 1.5-1.9, granularity of boric anhydride refinery coke or charcoal with required above-mentioned broken boric anhydride, granularity less than 30mm and weight less than 30mm, and the carbon content of refinery coke or charcoal and wood chip be boric anhydride weight 26%, granularity drops in the electric arc furnace after less than the aluminium thorough mixing of 20mm less than the iron of 30mm or soft steel waste material, granularity;
(3) energising melting, 1800 ℃-2300 ℃ of Control for Kiln Temperature points, smelting time is 4-8 hour;
(4) tapping casting moulding.
5. ferro-aluminum boron alloy according to claim 3 is characterized in that production method comprises the following steps:
(1) ferro-boron, the granularity of required granularity less than 50mm dropped in the intermediate frequency smelting furnace less than the aluminium of 50mm;
(2) energising melting, Control for Kiln Temperature is at 1000 ℃-1600 ℃, and smelting time is 1-4 hour;
(3) tapping casting moulding.
6. according to the production method of claim 4 or 5 described ferro-aluminum boron alloys, it is characterized in that tapping casting moulding employing water-cooled cast molding device, get rid of sheet equipment, get rid of one of carrying equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100391853A CN1296506C (en) | 2004-02-20 | 2004-02-20 | Ferro-aluminium-boron alloy and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100391853A CN1296506C (en) | 2004-02-20 | 2004-02-20 | Ferro-aluminium-boron alloy and its production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1657642A true CN1657642A (en) | 2005-08-24 |
| CN1296506C CN1296506C (en) | 2007-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100391853A Expired - Fee Related CN1296506C (en) | 2004-02-20 | 2004-02-20 | Ferro-aluminium-boron alloy and its production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990420A (en) * | 2022-04-29 | 2022-09-02 | 长沙东鑫环保材料有限责任公司 | A kind of aluminum boron chromium nitrogen iron alloy and its preparation method and application |
| CN116904839A (en) * | 2023-09-12 | 2023-10-20 | 内蒙古永磊材料科技有限公司 | High-purity ferroboron and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02155203A (en) * | 1988-12-08 | 1990-06-14 | Tokin Corp | Manufacture of polymer composite type rare earth magnet |
| CN1029412C (en) * | 1993-07-17 | 1995-08-02 | 辽阳铁合金厂 | Carbon heating process for producing ferroboron from premade boron coke |
-
2004
- 2004-02-20 CN CNB2004100391853A patent/CN1296506C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990420A (en) * | 2022-04-29 | 2022-09-02 | 长沙东鑫环保材料有限责任公司 | A kind of aluminum boron chromium nitrogen iron alloy and its preparation method and application |
| CN116904839A (en) * | 2023-09-12 | 2023-10-20 | 内蒙古永磊材料科技有限公司 | High-purity ferroboron and preparation method thereof |
| CN116904839B (en) * | 2023-09-12 | 2023-11-24 | 内蒙古永磊材料科技有限公司 | High-purity ferroboron and preparation method thereof |
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| Publication number | Publication date |
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| CN1296506C (en) | 2007-01-24 |
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Granted publication date: 20070124 Termination date: 20110220 |