CN103938127A - Method for preparing iron-based amorphous broadband - Google Patents
Method for preparing iron-based amorphous broadband Download PDFInfo
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- CN103938127A CN103938127A CN201410165856.4A CN201410165856A CN103938127A CN 103938127 A CN103938127 A CN 103938127A CN 201410165856 A CN201410165856 A CN 201410165856A CN 103938127 A CN103938127 A CN 103938127A
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- molten steel
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000003723 Smelting Methods 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 44
- 229910000831 Steel Inorganic materials 0.000 claims description 39
- 239000010959 steel Substances 0.000 claims description 39
- 238000002360 preparation method Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 15
- 239000010453 quartz Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 229910052796 boron Inorganic materials 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 230000006698 induction Effects 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 241001062472 Stokellia anisodon Species 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 239000003818 cinder Substances 0.000 claims description 3
- 229910000808 amorphous metal alloy Inorganic materials 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005507 spraying Methods 0.000 abstract description 2
- 206010039897 Sedation Diseases 0.000 abstract 1
- 238000007712 rapid solidification Methods 0.000 abstract 1
- 230000036280 sedation Effects 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 238000003475 lamination Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000005300 metallic glass Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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- Continuous Casting (AREA)
Abstract
The invention belongs to the technical field of rapid solidification of amorphous alloy, and discloses a method for preparing an iron-based amorphous broadband. The method orderly comprises the following three steps: 1, smelting at low temperature; 2, insulated sedation; 3, spraying the band, and the like. The demands on raw materials can be properly reduced, good performance of the product can also be ensured, the cost is reduced, the manufactured band surface is even and consistent, the band production efficiency and banding forming rate are greatly improved, and the band with more excellent performance is obtained.
Description
Technical field
The invention belongs to non-crystaline amorphous metal flash set technology field, relate to a kind of preparation method of Fe-based amorphous broadband.
Background technology
Fe-based amorphous alloy is as a kind of novel green developing rapidly in recent years, energy-conservation novel material, conventionally use flash set technology, its preparation technology is: by each starting material process melting of specific alloy components containing, the control such as liquid level, temperature of then molten iron of the condition of high temperature being wrapped by spray is ejected on the cooling roller of high speed rotating, makes with the speed of cooling chillings of 106 DEG C the amorphous thin ribbon that thickness is less than 0.03mm.
There are problems in equipment and the technique of existing production iron-based amorphous-alloy broadband.Smelt top temperature and be generally greater than 1500 DEG C, the one, make lining erosion aggravation, the 2nd, make the serious composition of molten steel scaling loss be difficult to, control, be unfavorable for the removal of impurity element, comprehensive consideration can make molten steel pollution level increase; In spray bag, molten steel liquid level is floated greatly, and nozzle ejection molten steel speed is out unstable, causes weld pool unstable, causes the one-tenth band rate of band, the apparent pattern of zone face all undesirable, and such band consistency of performance is poor, lamination coefficient is low; Also can remaining impact spray the minute impurities particle of being with even if spray molten steel the clean again of processing in the time smelting in wrapping, and spray bag also can with the contact process of molten steel in separate out impurity, these impurity can plug nozzle cause burr in when band spray, do not become band, even the generation of the bad phenomenon such as vexed bag.
China Patent Publication No. CN102314985A has proposed a kind of iron-based amorphous-alloy broadband and manufacture method thereof, its production technique is still continued to use traditional method, nozzle seam width is still 0.4～0.7mm, this is that the iron-based amorphous-alloy broadband lamination coefficient of its production can only reach the level that is greater than 0.84 because their smelting technology or/and spray bag structure cannot make impurity particle in molten steel reach the spray band level of 0.3～0.4mm mouth seam.
China Patent Publication No. CN2882849Y has proposed a kind of Ampere force pressure pocket builder, although its spraying pressure by nozzle place molten steel and speed can be constant, but it is clean that the impurity in molten steel is still difficult to remove, and its spray bag heat insulation effect is poor, is not suitable for the iron-based amorphous-alloy broadband that disposable spray is greater than 1 ton.
Fe-based amorphous wide-band system Preparation Method or the defect of spray carrying equipment because self existing described in above-mentioned each patent, cause ferrous alloy broadband to become band rate, lamination coefficient low, is unfavorable for producing in enormous quantities operation.Therefore, how to improve the preparation method in Fe-based amorphous broadband, increase substantially band and become to become with rate and lamination coefficient etc. the problem of needing solution badly.
Summary of the invention
The object of this invention is to provide a kind of preparation method of Fe-based amorphous broadband, can produce zone face uniformity, reduce strip surface projection, acicular pores, scratch etc., lamination coefficient is greater than 0.9; Zone face width 80～213mm, tape thickness can be controlled in 25 ± 1m, can be excellent without comprehensive magnetic after magnetic-field annealing, saturation magnetic flux density Bs=1.56T, coercivity H≤2A/m, maximum permeability >=650000, Pc (50Hz, 1.4T)≤0.11W/kg.
For technical solution problem, the present invention adopts following technical scheme:
The preparation method in Fe-based amorphous broadband, its preparation process comprises successively:
Step 1, low temperature smelting: adopt medium-frequency induction furnace to smelt, first pure iron is booked successively to furnace bottom along furnace wall, again residue pure iron is booked to one deck along furnace wall, then ferro-boron is poured in stove by 1/7～1/5 batching of pure iron in stove, like this, the mass ratio of boron and iron is about 3:97, now approximately 1250 DEG C of ferro-boron fusing points, not only in stove, raw material fusing is fast, and also can realize cold melt, be conducive to remove high temperature furnace slag and low temperature slag, until raw material in stove all melted and scarfing cinder completely after, add Pure Silicon Metal, the molten steel that obtains having smelted, in whole smelting process, temperature is controlled at below 1380 DEG C, in tradition smelting requirements pure iron, Al, Ti are all less than 0.005%, and in ferro-boron, Al, Ti are all less than 0.05%, and in Pure Silicon Metal, Al is less than 0.05%, in low temperature smelting of the present invention, in pure iron, ferro-boron, Al, Ti content are only less than 0.1%, and in Pure Silicon Metal, Al content is only less than 0.3%,
Step 2, insulation calmness: the molten steel that medium-frequency induction furnace has been smelted enters insulation, calmness in tundish by diversion trench, so that remaining impurity floating in molten steel, wherein, globars by heating in diversion trench is incubated and passes into argon gas protection, argon shield can reduce molten steel oxidation, in tundish, protects by Frequency Induction Heating; Diversion trench comprises insulation cover, flume and insulating shell, is filled with insulating cotton in insulation cover, inlays the globars of heating, and is provided with shielding gas ingress pipe; The bottom transverse cross section of flume is semicircle, and end has tap hole, and flume outside is provided with insulating brick and insulating cotton;
Step 3, spray band: mix up nozzle exchange apparatus, nozzle stitches wide 0.4～0.6mm, bandwidth 80～213mm, pressure spray bag temperature is heated to after 1280～1380 DEG C, molten steel in tundish is poured in pressure spray bag, pressure spray bag is provided with quartz cover, quartz cover holds the molten steel being poured in pressure spray bag, the negative pressure of quartz cover is-20～-100kPa, after molten steel reaches predetermined fluid level, negative pressure becomes malleation value, this malleation value and liquid-level pressure value sum are controlled at 0.1～1.0Mpa, molten steel in tundish constantly adds in pressure spray bag makes liquid level and malleation value in quartz cover keep constant, after molten steel in tundish is most, the pressure change formula that in spray bag, malleation value is set according to liquid level change is adjusted, to keep malleation value and liquid-level pressure value sum to keep constant, under the effect of pressure, obtain band from nozzle ejection, wherein, predetermined fluid level height is 350～450mm.
Wherein, conventional spout does not have nozzle current stabilization hole, only has circular hole or trapezoidal stable chute, and the molten steel that can make like this nozzle seam flow out is unstable, causes " weld pool " fluctuation large, the normal spray band of impact; Nozzle of the present invention has increased round current stabilization hole, CO gas heating groove and " weld pool " protection air cleft, and with CO gaseous combustion heat release heated nozzle, while making spray band, nozzle temperature keeps constant, and the CO producing
2by " weld pool " discharge, and also can avoid nozzle high temperature oxidation, and the air-flow that isolation cooling roller high speed rotating produces makes " weld pool " stablize and reduce the oxidation of molten steel by protection air cleft.
Preferably, in described step 2, in diversion trench, by the globars insulation of heating, temperature is 1200～1350 DEG C.
Preferably, in described step 3, the negative pressure of quartz cover is-45～-50kPa.
Preferably, in described step 3, malleation value and liquid-level pressure value sum are 0.67～0.69Mpa.
The present invention has following beneficial effect:
1. than traditional method impurity still less, molten steel is purer for the molten steel that the present invention smelts, and composition and temperature homogeneity are more excellent, and smelting energy consumption is low;
2. this technique diversion trench uses globars heating and thermal insulation and gas shield measure, reduced molten steel oxidation, improved the stability of temperature;
3. spray turn-up mechanism has load coil, pressure spray bag and device for nozzle swapping, line slideway charging carriage has installed sensor and setter additional, can regulate upper and lower, forward and backward skew, improve automatic regulation level, reduce the impact of human factor; Induction heating spray bag crucible is compared globars heating, has improved the handiness of spray bag heating, has avoided the impact of the unfavorable conditions such as globars short circuit, short circuit on spray band; Pressure spray bag structure has improved the stability of liquid level, has also avoided conventional spray to cause greatly the unstable situation of even breaking of weld pool to occur with level fluctuation, makes " weld pool " more stable, thereby has improved the planarization of strip surface; Device for nozzle swapping not only makes spray bag improve work-ing life, and has improved the speed of changing spray bag, nozzle, in general, makes band production efficiency and becomes band rate greatly to improve, and the cost causing work-ing life because of refractory materials obviously reduces.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is the structural representation of diversion trench in preparation method's step 2 in a kind of Fe-based amorphous broadband of the present invention;
Fig. 2 is the side-view of diversion trench in Fig. 1;
Fig. 3 is the structural representation of pressure spray bag in preparation method's step 3 in a kind of Fe-based amorphous broadband of the present invention.
Embodiment
As shown in Figures 1 to 3, the preparation method embodiment 1 in a kind of Fe-based amorphous broadband of the present invention, its preparation process comprises successively:
Step 1, low temperature smelting: adopt medium-frequency induction furnace to smelt, first pure iron is booked successively to furnace bottom along furnace wall, again residue pure iron is booked to one deck along furnace wall, then ferro-boron is poured in stove by 1/7～1/5 batching of pure iron in stove, like this, the mass ratio of boron and iron is about 3:97, now approximately 1250 DEG C of ferro-boron fusing points, not only in stove, raw material fusing is fast, and also can realize cold melt, be conducive to remove high temperature furnace slag and low temperature slag, until raw material in stove all melted and scarfing cinder completely after, add Pure Silicon Metal, the molten steel that obtains having smelted, in whole smelting process, temperature is controlled at below 1380 DEG C, in tradition smelting requirements pure iron, Al, Ti are all less than 0.005%, and in ferro-boron, Al, Ti are all less than 0.05%, and in Pure Silicon Metal, Al is less than 0.05%, in low temperature smelting of the present invention, in pure iron, ferro-boron, Al, Ti content are only less than 0.1%, and in Pure Silicon Metal, Al content is only less than 0.3%,
Step 2, insulation calmness: the molten steel that medium-frequency induction furnace has been smelted enters insulation, calmness in tundish by diversion trench, so that remaining impurity floating in molten steel, wherein, in diversion trench, be incubated and pass into argon gas protection by the globars 3 of heating, argon shield can reduce molten steel oxidation, in tundish, protects by Frequency Induction Heating; Diversion trench comprises insulation cover 1, flume 4 and insulating shell 6, is filled with insulating cotton 2 in insulation cover 1, inlays the globars of heating, and is provided with shielding gas ingress pipe 9; The bottom transverse cross section of flume is semicircle, and end has tap hole 8, and flume outside is provided with insulating brick 5 and insulating cotton 7;
Step 3, spray band: mix up nozzle exchange apparatus 12, nozzle 13 stitches wide 0.4～0.6mm, bandwidth 80～213mm, pressure spray bag temperature is heated to after 1280～1380 DEG C, molten steel in tundish is poured in pressure spray bag, pressure spray bag is provided with quartz cover 11, quartz cover 11 holds the molten steel being poured in pressure spray bag, the negative pressure of quartz cover 11 is-20～-100kPa, after molten steel reaches predetermined fluid level, negative pressure becomes malleation value, this malleation value and liquid-level pressure value sum are controlled at 0.1～1.0Mpa, molten steel in tundish constantly adds in pressure spray bag makes liquid level and malleation value in quartz cover 11 keep constant, after molten steel in tundish is most, the pressure change formula that in spray bag, malleation value is set according to liquid level change is adjusted, to keep malleation value and liquid-level pressure value sum to keep constant, under the effect of pressure, obtain band from nozzle 13 ejections, wherein, predetermined fluid level height is 350～450mm.
Wherein, conventional spout does not have nozzle current stabilization hole, only has circular hole or trapezoidal stable chute, and the molten steel that can make like this nozzle seam flow out is unstable, causes " weld pool " fluctuation large, the normal spray band of impact; Nozzle of the present invention has increased round current stabilization hole, CO gas heating groove and " weld pool " protection air cleft, and with CO gaseous combustion heat release heated nozzle, while making spray band, nozzle temperature keeps constant, and the CO producing
2by " weld pool " discharge, and also can avoid nozzle high temperature oxidation, and the air-flow that isolation cooling roller high speed rotating produces makes " weld pool " stablize and reduce the oxidation of molten steel by protection air cleft.
The band obtaining in embodiment 1 is got to 5 groups of samples below, its contained impurity and various performance are detected, detected result is as table 1:
Table 1
From detected result, learn, the thickness of strip that the embodiment of the present invention 1 obtains is even, can be controlled in 25 ± 1m, and density improves, and reduce strip surface projection, acicular pores, scratch etc., strip coil is around product lamination coefficient >=0.9, prepared band without magnetic-field annealing after comprehensive magnetic can be excellent, saturation magnetic flux density Bs=1.56T, coercivity H≤2A/m, maximum permeability >=620000, Pc (50Hz, 1.4T)≤0.11W/kg.
The foregoing is only specific embodiments of the invention, but technical characterictic of the present invention is not limited to this, any those skilled in the art is in the field of the invention, and the variation of doing or modification are all encompassed among the scope of the claims of the present invention.
Claims (4)
1. the preparation method in Fe-based amorphous broadband, is characterized in that: its preparation process comprises successively:
Step 1, low temperature smelting: adopt medium-frequency induction furnace to smelt, first pure iron is booked successively to furnace bottom along furnace wall, again residue pure iron is booked to one deck along furnace wall, then ferro-boron is poured in stove by 1/7～1/5 batching of pure iron in stove, until raw material in stove all melted and scarfing cinder completely after, add Pure Silicon Metal, the molten steel that obtains having smelted, in whole smelting process, temperature is controlled at below 1380 DEG C;
Step 2, insulation are calm: the molten steel that medium-frequency induction furnace has been smelted enters insulation, calmness in tundish by diversion trench, wherein, the globars insulation by heating in diversion trench and pass into argon gas protection, tundish is interior to be protected by Frequency Induction Heating;
Step 3, spray band: nozzle stitches wide 0.4～0.6mm, bandwidth 80～213mm, pressure spray bag temperature is heated to after 1280～1380 DEG C, molten steel in tundish is poured in pressure spray bag, pressure spray bag is provided with quartz cover, quartz cover holds the molten steel being poured in pressure spray bag, the negative pressure of quartz cover is-20～-100kPa, after molten steel reaches predetermined fluid level, negative pressure becomes malleation value, this malleation value and liquid-level pressure value sum are controlled at 0.1～1.0Mpa, keep liquid level and malleation value in quartz cover constant, keep malleation value and liquid-level pressure value sum to keep constant, under the effect of pressure, obtain band from nozzle ejection, wherein, predetermined fluid level height is 350～450mm.
2. the preparation method in a kind of Fe-based amorphous broadband as claimed in claim 1, is characterized in that: in described step 2, in diversion trench, by the globars insulation of heating, temperature is 1200～1350 DEG C.
3. the preparation method in a kind of Fe-based amorphous broadband as claimed in claim 1, is characterized in that: in described step 3, the negative pressure of quartz cover is-45～-50kPa.
4. the preparation method in a kind of Fe-based amorphous broadband as claimed in claim 1, is characterized in that: in described step 3, malleation value and liquid-level pressure value sum are 0.67～0.69Mpa.
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| CN201410165856.4A CN103938127B (en) | 2014-04-23 | 2014-04-23 | Method for preparing iron-based amorphous broadband |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104200986A (en) * | 2014-09-15 | 2014-12-10 | 安徽蓝海机电设备有限公司 | Transformer core and production method thereof |
| US20160091250A1 (en) * | 2014-09-26 | 2016-03-31 | Crucible Intellectual Property, Llc | Quartz pouring & casting system for non-wetting amorphous alloys |
| CN105728676A (en) * | 2016-04-05 | 2016-07-06 | 江苏国能合金科技有限公司 | Molten iron whole gas protection system of amorphous thin belt equipment |
| CN105935748A (en) * | 2016-04-05 | 2016-09-14 | 江苏国能合金科技有限公司 | Quick heating device for spray nozzle of amorphous ribbon equipment |
| CN106975733A (en) * | 2017-03-27 | 2017-07-25 | 江苏驰睿新材料科技有限公司 | One kind production amorphous band compound nozzle cup |
| CN107385363A (en) * | 2017-07-09 | 2017-11-24 | 兆晶股份有限公司 | A kind of Fe-based amorphous broadband and preparation method thereof |
| CN113005325A (en) * | 2021-02-25 | 2021-06-22 | 宁波中超新材料有限公司 | Copper-iron alloy strip with microcrystalline structure and high iron content and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105935748A (en) * | 2016-04-05 | 2016-09-14 | 江苏国能合金科技有限公司 | Quick heating device for spray nozzle of amorphous ribbon equipment |
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| CN105728676B (en) * | 2016-04-05 | 2018-06-08 | 江苏国能合金科技有限公司 | Amorphous thin ribbon equipment molten iron whole process gas protection system |
| CN106975733A (en) * | 2017-03-27 | 2017-07-25 | 江苏驰睿新材料科技有限公司 | One kind production amorphous band compound nozzle cup |
| CN107385363A (en) * | 2017-07-09 | 2017-11-24 | 兆晶股份有限公司 | A kind of Fe-based amorphous broadband and preparation method thereof |
| CN113005325A (en) * | 2021-02-25 | 2021-06-22 | 宁波中超新材料有限公司 | Copper-iron alloy strip with microcrystalline structure and high iron content and preparation method thereof |
| CN113005325B (en) * | 2021-02-25 | 2022-03-25 | 宁波中超新材料有限公司 | Copper-iron alloy strip with microcrystalline structure and high iron content and preparation method thereof |
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| CN103938127B (en) | 2015-06-17 |
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