CN104789809A - Flux for amorphous alloy and smelting method for amorphous alloy - Google Patents
Flux for amorphous alloy and smelting method for amorphous alloy Download PDFInfo
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- CN104789809A CN104789809A CN201410029304.0A CN201410029304A CN104789809A CN 104789809 A CN104789809 A CN 104789809A CN 201410029304 A CN201410029304 A CN 201410029304A CN 104789809 A CN104789809 A CN 104789809A
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- amorphous
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- 230000004907 flux Effects 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000003723 Smelting Methods 0.000 title claims abstract description 26
- 229910000808 amorphous metal alloy Inorganic materials 0.000 title abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 68
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 65
- 239000008262 pumice Substances 0.000 claims abstract description 14
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims abstract description 8
- 239000005300 metallic glass Substances 0.000 claims description 58
- 239000000463 material Substances 0.000 claims description 23
- -1 Sodium aluminum fluoride Chemical compound 0.000 claims description 12
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 20
- 239000001301 oxygen Substances 0.000 abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 abstract description 20
- 238000002360 preparation method Methods 0.000 abstract description 14
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 1
- 238000010923 batch production Methods 0.000 abstract 1
- 229910001610 cryolite Inorganic materials 0.000 abstract 1
- PALNZFJYSCMLBK-UHFFFAOYSA-K magnesium;potassium;trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-].[Cl-].[K+] PALNZFJYSCMLBK-UHFFFAOYSA-K 0.000 abstract 1
- 230000006911 nucleation Effects 0.000 abstract 1
- 238000010899 nucleation Methods 0.000 abstract 1
- 239000010949 copper Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 229910001868 water Inorganic materials 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- 229910052802 copper Inorganic materials 0.000 description 11
- 229910002482 Cu–Ni Inorganic materials 0.000 description 10
- 238000009413 insulation Methods 0.000 description 10
- 241001417490 Sillaginidae Species 0.000 description 9
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- 230000006698 induction Effects 0.000 description 9
- 229910052863 mullite Inorganic materials 0.000 description 9
- 238000005266 casting Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 4
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 3
- 229910001628 calcium chloride Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000001103 potassium chloride Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000007771 core particle Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000005247 gettering Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Abstract
The invention provides a flux for an amorphous alloy and a smelting method for the amorphous alloy. The flux comprises the following substances by weight: 25 to 55% of cryolite, 8 to 35% of pumice, 5 to 30% of carnallite, 8 to 30% of villiaumite and 0 to 10% of hydrochloride. With the smelting method for the amorphous alloy, inclusion of refractory oxide and oxygen content of amorphous mother alloy are reduced, so nucleation sites are reduced and amorphous forming ability of the amorphous mother alloy is improved; moreover, since the smelting method is easy to realize and severe requirements on preparation conditions like a high-vacuum-degree environment and a high-purity-degree parent metal of amorphous preparation are alleviated to a greatest extent, preparation cost is reduced, preparation efficiency is improved, and the method is of great significance to batch production of bulk amorphous alloy.
Description
Technical field
The invention belongs to non-crystaline amorphous metal field, particularly relate to a kind of non-crystaline amorphous metal flux and non-crystaline amorphous metal smelting process.
Background technology
Non-crystaline amorphous metal is the structure of a kind of short range order, longrange disorder.Compared with traditional crystal alloy material, it has more excellent mechanical property, as high-yield strength, large elastic strain limit, high fatigue resistance and high-wearing feature etc., also there is the ability of excellent anti-medium corrosion simultaneously and there is soft magnetism, hard magnetic performance.Therefore, since late 1980s, block amorphous alloy was born, just become emphasis and the focus of the concern of metallic substance circle always, reduced the critical cooling velocity of non-crystaline amorphous metal by multicomponent Composition Design, make it in aerospace, weapon industry, precision optical machinery and even information technology etc., all have wide application potential.But, the preparation method of non-crystaline amorphous metal is high to purity requirement, in alloy, non-metallic inclusion and oxygen level are very responsive, these impurity all can become forming core particle in alloy process of cooling, there are some researches show, as long as impurity or oxygen level acquire a certain degree in alloy, also can not obtain noncrystal even if improve speed of cooling.Therefore, the preparation of bulk amorphous alloy is very harsh for the requirement of preparation envrionment conditions, and preparation cost is high, which also limits bulk amorphous alloy and walks out laboratory, moves towards the paces of engineer applied.
Therefore, non-crystaline amorphous metal is smelted and is generally carried out under condition of high vacuum degree environment, utilize negative pressure slag making and degassed, under subnormal ambient, lighter non-metallic inclusion more easily floats and is gathered in weld pool surface and removes, in melt, gas also more easily overflows, and this method largely decreases impurity and gas content in mother alloy.
But; singlely improve alloy purity by condition of high vacuum degree and have very large limitation; because some small refractory oxide particles move very active in high-temperature fusant; be difficult to be gathered in surface from melt extraction completely; on the other hand; along with bath surface gathers increasing top layer viscosity and increasing of slag, hinder the smooth discharge of gas in melt.Especially, when alloy smelting degree of cleaning are poor, surface oxidation is serious, impurity-eliminating effect is more limited.
Publication number is that a kind of flux preparing bulk amorphous alloy that patent discloses of CN103320630A covers and vacuum purification method.Concrete work discloses: by mother alloy and flux mixing, be heated to 100-600 DEG C of temperature of superheat on mother alloy liquidus temperature, make flux be covered on alloy melt; While alloy melt insulation 0.1-hour, impose vacuum purification melt, utilize vacuum effectively to discharge the obnoxious flavour such as water, oxygen, nitrogen, sulphur in melt; Meanwhile, utilize the convection current that in melt, gaseous emission is formed, melt is contacted effectively with flux, and then the detrimental impurity element in melt is neutralized by flux or absorbs; Finally alloy melt is cooled to room temperature and forms non-crystaline amorphous metal solid.Also disclosing flux is Na
2o.CaO.6SiO
2, NaCl, KCl, Na
2b
4o
7, B
2o
3in one or its mixture.Although aforesaid method can prepare amorphous alloy material, this amorphous alloy material preparation condition is harsh, and cost is high, requires high vacuum tightness (10
-1-10
-3and high-purity raw material Pa), and prepared amorphous size little (tens milligrams), critical size is also only at 1-2mm, and using value is limited.
Summary of the invention
There is a large amount of impurity and oxygen cannot remove technical problem for solving in existing non-crystaline amorphous metal preparation process in the present invention, provides a kind of non-crystaline amorphous metal flux and the non-crystaline amorphous metal smelting process that can well remove impurity and oxygen in non-crystaline amorphous metal.
The invention provides a kind of non-crystaline amorphous metal flux, described flux comprises following material and weight percentage:
Sodium aluminum fluoride 25-55%
Pumice 8-35%
Carnallitite 5-30%
Villiaumite 8-30%
Villaumite 0-10%.
Present invention also offers a kind of smelting process of non-crystaline amorphous metal, described method, for non-crystaline amorphous metal mother alloy and flux to be joined respectively in crucible, then carries out vacuum metling; Described flux is flux of the present invention.
Present invention also offers a kind of smelting process of non-crystaline amorphous metal, described method is melted by non-crystaline amorphous metal mother alloy, then adds flux and carries out vacuum metling; Described flux is flux of the present invention.
Non-crystaline amorphous metal flux provided by the invention, can gettering be carried out to non-crystaline amorphous metal mother alloy melt and fall oxygen process, decrease refractory oxide in non-crystaline amorphous metal mother alloy to be mingled with and oxygen level, thus decrease forming core particle, improve the amorphous formation ability of non-crystaline amorphous metal mother alloy; Alleviate the degree of non-crystaline amorphous metal preparation for preparation condition requirement harshness to a certain extent simultaneously, thus reduce preparation cost, improve preparation efficiency, the volume production for bulk amorphous alloys is significant.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of non-crystaline amorphous metal flux, described flux comprises following material and weight percentage:
Sodium aluminum fluoride 25-55%
Pumice 8-35%
Carnallitite 5-30%
Villiaumite 8-30%
Villaumite 0-10%.
Further preferably,
Sodium aluminum fluoride 25-45%
Pumice 15-25%
Carnallitite 10-25%
Villiaumite 8-20%
Villaumite 2-5%.
Non-crystaline amorphous metal flux of the present invention, described flux comparatively aluminium alloy is light, liquid level is floated on after fusing, the fusing point of refractory oxide can be reduced, promote the dissolving swimming in non-crystaline amorphous metal bath surface or be wrapped in alloy block oxide on surface, thus metal is more easily separated with slag, the gases such as the oxygen dissolved in non-crystaline amorphous metal melt, nitrogen are also more easily discharged; In addition, in non-crystaline amorphous metal melt, refractory oxide is not for molten metal soaks, many solid phase particles in dispersion, flux of the present invention then has stronger wetting ability to oxide compound, be mingled with (being mainly oxide compound) on non-crystaline amorphous metal melt upper strata contacts with floating flux, adsorbs, dissolves or chemosynthesis and entering in flux.At this moment, the skim molten metal contacted with flux is purer, its density ratio moves downward containing the molten metal be mingled with is large, meanwhile, then rise to contact with flux containing being mingled with more lower metal liquid, being mingled with and constantly adsorbing with flux, dissolving or chemical combination and be trapped in flux wherein, this process is performed until and is nearly all absorbed by flux being mingled with in whole molten bath.
According to non-crystaline amorphous metal flux provided by the present invention, in order to improve the purity of non-crystaline amorphous metal further, in described pumice, the content of silicon-dioxide is not less than 70wt%, and the content of aluminum oxide is not less than 11wt%.
According to non-crystaline amorphous metal flux provided by the present invention, described villiaumite has no particular limits, as long as dissolve in solvent, as KF, CaF
2, MgF
2in at least one; Described villaumite has no particular limits, as long as dissolve in solvent, as KCl, CaCl
2, MgCl
2in at least one.
Present invention also offers a kind of smelting process of non-crystaline amorphous metal, described method, for non-crystaline amorphous metal mother alloy and flux to be joined respectively in crucible, then carries out vacuum metling; Described flux is flux of the present invention.
Present invention also offers a kind of smelting process of non-crystaline amorphous metal, described method is melted by non-crystaline amorphous metal mother alloy, then adds flux and carries out vacuum metling; Described flux is flux of the present invention.
The addition manner of flux involved in the present invention is more flexible, the any position of crucible can be placed in when shove charge, but be deposited on crucible bottom in order to avoid having small part mixture and fail to participate in smelting process, thus affect impurity-eliminating effect, generally directly mixture is not placed in crucible bottom; In addition, as long as appointed condition allows also can be join weld pool surface by secondary charging mode after amorphous master alloy fusing.
Amorphous master alloy involved in the present invention, does not have particular requirement for non-crystaline amorphous metal system, is particularly suitable for containing the high non-crystaline amorphous metal system of the constituent element strong with oxygen affinity, oxygen solubility and alloy is dirty, smelt the situation of operating mode difference.Can be the reclaimed materials after utilization, also can be the mixture of each constituent element simple substance.
According to the smelting process of non-crystaline amorphous metal provided by the present invention, preferably, the vacuum tightness of described vacuum metling is less than 10Pa.The described subnormal ambient being less than 10Pa vacuum tightness, facilitates the discharge of gas and the floating of refractory oxide in non-crystaline amorphous metal melt to a certain extent and has an effect with surperficial flux.
According to the smelting process of non-crystaline amorphous metal provided by the present invention, described vacuum metling temperature does not have particular requirement, in order to improve fluidity of molten, be beneficial to gas to discharge, and promote that carbon dust grabs the generation of the process of oxygen, preferably, the temperature of described vacuum metling is 1100 DEG C-1350 DEG C.
According to the smelting process of non-crystaline amorphous metal provided by the present invention, the described vacuum metling time does not have particular requirement, in order to ensure removal of impurities, exhaust process thoroughly do not cause again the too much scaling loss of element, crucible is destroyed, preferably, the time of described vacuum metling is 15-35min.
According to the smelting process of non-crystaline amorphous metal provided by the present invention, the additive of described flux does not have particular requirement, can according to amorphous master alloy system, smelt operating mode and required reach removal of impurities, fall oxygen effect and adjust, preferably, the addition of described flux is the 0.1%-5% of mother alloy quality, more preferably 0.1%-2%.
Carry out detailed description the present invention below by specific embodiment, the Zr-Al-Cu-Ni system alloy (atomic percent: Zr:Al:Cu:Ni=53:10:30:7) (reclaimed materials) being used for smelting in all embodiments and comparative example has identical component and condition of surface.
Embodiment 1
Get Zr-Al-Cu-Ni alloy reclaimed materials 40KG and load mullite crucible, then get 0.12KG flux and be sprinkling upon above reclaimed materials, flux consists of (weight ratio): sodium aluminum fluoride: 30%, pumice: 25%, carnallitite: 15%, Potassium monofluoride: 25%, calcium chloride: 5%.Then be evacuated to 5Pa to start to utilize Frequency Induction Heating alloy to fusing, treat that melt temperature rises to 1150 DEG C of insulations and smelts 15min, be then poured into water cooled copper mould and obtain alloy A 1.
Embodiment 2
Get Zr-Al-Cu-Ni alloy reclaimed materials 40KG and load mullite crucible, then get 0.2KG flux and be sprinkling upon above reclaimed materials, flux consists of (weight ratio): sodium aluminum fluoride: 40%, pumice: 20%, carnallitite: 25%, Potassium monofluoride: 10%, calcium chloride: 5%.Then be evacuated to 5Pa to start to utilize Frequency Induction Heating alloy to fusing, treat that melt temperature rises to 1150 DEG C of insulations and smelts 15min, be then poured into water cooled copper mould and obtain alloy A 2.
Embodiment 3
Get Zr-Al-Cu-Ni alloy reclaimed materials 40KG and load mullite crucible, then get 0.4KG flux and be sprinkling upon above reclaimed materials, flux consists of (weight ratio): sodium aluminum fluoride: 45%, pumice: 15%, carnallitite: 10%, magnesium fluoride: 20%, calcium chloride: 10%.Then be evacuated to 8Pa to start to utilize Frequency Induction Heating alloy to fusing, treat that melt temperature rises to 1250 DEG C of insulations and smelts 20min, be then poured into water cooled copper mould and obtain alloy A 3.
Embodiment 4
Get Zr-Al-Cu-Ni alloy reclaimed materials 40KG and load mullite crucible, then get 0.4KG flux and be sprinkling upon above reclaimed materials, flux consists of (weight ratio): sodium aluminum fluoride: 47%, pumice: 10%, carnallitite: 23%, magnesium fluoride: 18%, Repone K: 2%.Then be evacuated to 8Pa to start to utilize Frequency Induction Heating alloy to fusing, treat that melt temperature rises to 1250 DEG C of insulations and smelts 20min, be then poured into water cooled copper mould and obtain alloy A 4.
Embodiment 5
Get Zr-Al-Cu-Ni alloy reclaimed materials 40KG and load mullite crucible, then get 0.8KG flux and be sprinkling upon above reclaimed materials, flux consists of (weight ratio): sodium aluminum fluoride: 50%, pumice: 12%, carnallitite: 30%, magnesium fluoride: 8%.Then be evacuated to 5Pa to start to utilize Frequency Induction Heating alloy to fusing, treat that melt temperature rises to 1250 DEG C of insulations and smelts 25min, be then poured into water cooled copper mould and obtain alloy A 5.
Embodiment 6
Get Zr-Al-Cu-Ni alloy reclaimed materials 40KG and load mullite crucible, then get 0.04KG flux and be sprinkling upon above reclaimed materials, flux consists of (weight ratio): sodium aluminum fluoride: 25%, pumice: 35%, carnallitite: 5%, Calcium Fluoride (Fluorspan): 30%, magnesium chloride: 5 %.Then be evacuated to 5Pa to start to utilize Frequency Induction Heating alloy to fusing, treat that melt temperature rises to 1100 DEG C of insulations and smelts 35min, be then poured into water cooled copper mould and obtain alloy A 6.
Embodiment 7
Get Zr-Al-Cu-Ni alloy reclaimed materials 40KG and load mullite crucible melting, getting 2KG flux is again sprinkling upon above the reclaimed materials of melting, flux consists of (weight ratio): sodium aluminum fluoride: 55%, pumice: 8%, carnallitite: 20%, magnesium fluoride: 8%, Repone K: 10%.Then be evacuated to 5Pa to start to utilize Frequency Induction Heating alloy to fusing, treat that melt temperature rises to 1350 DEG C of insulations and smelts 15min, be then poured into water cooled copper mould and obtain alloy A 7.
Comparative example 1
Get Zr-Al-Cu-Ni alloy reclaimed materials 40KG and load mullite crucible, be then evacuated to 5Pa and start to utilize Frequency Induction Heating alloy to fusing, treat that melt temperature rises to 1150 DEG C of insulations and smelts 15min, be then poured into water cooled copper mould and obtain alloy CA1.
Comparative example 2
Get Zr-Al-Cu-Ni alloy reclaimed materials 40KG and load mullite crucible, getting 1KG flux KCl is again sprinkling upon above reclaimed materials, then be evacuated to 8Pa to start to utilize Frequency Induction Heating alloy to fusing, treat that melt temperature rises to 1250 DEG C of insulations and smelts 20min, be then poured into water cooled copper mould and obtain alloy CA2.
Performance test
1, oxygen level test
Adopt O/N analyser to carry out oxygen level to amorphous master alloy ingot casting plate A1-A7 and CA1-CA2 to test, the results are shown in Table 1;
2, fracture toughness property
Being watered by alloy A 1-A7 and CA1-CA2. and casting from die cavity cross section is that the water cooled copper mould of 4mm × 8mm obtains test sample, and utilize omnipotent mechanics machine to test fracture toughness property, span 32mm, loading rate 1mm/min, the results are shown in Table 1;
3, critical size
Alloy A 1-A7 and CA1-CA2. is watered the water cooled copper mould casting from cylindrical mold cavity and obtain the long-pending pole of varying cross-section, recycling X-ray diffractometer carries out test judgement critical size, the results are shown in Table 1.
Table 1
。
As can be seen from Table 1, the oxygen level of the ingot casting of comparative example 1 is 1392ppm, and critical size is 3mm; The oxygen level of the ingot casting of comparative example 2 is 1093ppm, and critical size is 3.5mm.This shows that inclusion in the ingot casting of comparative example 1 and comparative example 2 (oxide compound especially hard to tolerate) content is high, heterogeneous forming core point is all become during cooling, reduce ingot casting amorphous formation ability, critical size reduction directly causes mechanical properties decrease, and its 4mm × 8mm sample fracture toughness also only has 11MPam respectively
1/2and 19MPam
1/2.And the ingot casting sample that smelting process according to the present invention obtains, not only oxygen levels is low, and most elevated oxygen level is 261ppm, and critical size is all at more than 8mm, and Fracture Toughness is also higher.Illustrate that the present invention is by adding flux to the absorption of inclusion in hard alloy mother liquor, dissolving or chemosynthesis, significantly reduce inclusion content in amorphous master alloy (especially refractory oxide) and oxygen level, cut down heterogeneous forming core point, significantly improve alloy purity and amorphous formation ability.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a non-crystaline amorphous metal flux, is characterized in that, described flux comprises following material and weight percentage:
Sodium aluminum fluoride 25-55%
Pumice 8-35%
Carnallitite 5-30%
Villiaumite 8-30%
Villaumite 0-10%.
2. non-crystaline amorphous metal flux according to claim 1, is characterized in that, described flux comprises following material and weight percentage:
Sodium aluminum fluoride 25-45%
Pumice 15-25%
Carnallitite 10-25%
Villiaumite 8-20%
Villaumite 2-5%.
3. non-crystaline amorphous metal flux according to claim 1, is characterized in that, villiaumite is KF, CaF
2, MgF
2in at least one, villaumite is KCl, CaCl
2, MgCl
2in at least one.
4. a smelting process for non-crystaline amorphous metal, is characterized in that, described method, for non-crystaline amorphous metal mother alloy and flux to be joined respectively in crucible, then carries out vacuum metling; Described flux is the flux described in claim 1-3 any one.
5. a smelting process for non-crystaline amorphous metal, is characterized in that, described method is melted by non-crystaline amorphous metal mother alloy, then adds flux and carries out vacuum metling; Described flux is the flux described in claim 1-3 any one.
6. the smelting process of the non-crystaline amorphous metal according to claim 4 or 5, is characterized in that, the vacuum tightness of described vacuum metling is less than 10Pa.
7. the smelting process of non-crystaline amorphous metal according to claim 6, is characterized in that, the temperature of described vacuum metling is 1100 DEG C-1350 DEG C.
8. the smelting process of non-crystaline amorphous metal according to claim 6, is characterized in that, the time of described vacuum metling is 15-35min.
9. the smelting process of non-crystaline amorphous metal according to claim 6, is characterized in that, the addition of described flux is the 0.1%-5% of non-crystaline amorphous metal mother alloy quality.
10. the smelting process of non-crystaline amorphous metal according to claim 9, is characterized in that, the addition of described flux is the 0.1%-2% of non-crystaline amorphous metal mother alloy quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410029304.0A CN104789809B (en) | 2014-01-21 | 2014-01-21 | Flux for amorphous alloy and smelting method for amorphous alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410029304.0A CN104789809B (en) | 2014-01-21 | 2014-01-21 | Flux for amorphous alloy and smelting method for amorphous alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104789809A true CN104789809A (en) | 2015-07-22 |
| CN104789809B CN104789809B (en) | 2017-05-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62287075A (en) * | 1986-06-04 | 1987-12-12 | Hitachi Ltd | Amorphous magnetic body having high saturation magnetic flux density |
| CN103320630A (en) * | 2013-05-28 | 2013-09-25 | 江苏迈盛新材料有限公司 | Flux covering and vacuum purifying method for preparing bulk amorphous alloy |
| CN103484747A (en) * | 2013-05-28 | 2014-01-01 | 江苏迈盛新材料有限公司 | Method for preparing iron-based amorphous alloy with supersoft ferromagnetic property |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62287075A (en) * | 1986-06-04 | 1987-12-12 | Hitachi Ltd | Amorphous magnetic body having high saturation magnetic flux density |
| CN103320630A (en) * | 2013-05-28 | 2013-09-25 | 江苏迈盛新材料有限公司 | Flux covering and vacuum purifying method for preparing bulk amorphous alloy |
| CN103484747A (en) * | 2013-05-28 | 2014-01-01 | 江苏迈盛新材料有限公司 | Method for preparing iron-based amorphous alloy with supersoft ferromagnetic property |
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