CN107311658A - Y2O3The preparation method of crucible and the application in high activity metal melting - Google Patents
Y2O3The preparation method of crucible and the application in high activity metal melting Download PDFInfo
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- CN107311658A CN107311658A CN201710435801.4A CN201710435801A CN107311658A CN 107311658 A CN107311658 A CN 107311658A CN 201710435801 A CN201710435801 A CN 201710435801A CN 107311658 A CN107311658 A CN 107311658A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
- C04B35/505—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds based on yttrium oxide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
Abstract
The invention discloses a kind of Y2O3The preparation method of crucible and the application in high activity metal melting, by dried Y2O3Powder is compressed to crucible biscuit under 100~140Mpa, and Y is prepared using solid sintering technology2O3Crucible, the present invention utilizes vaccum sensitive stove, the Y prepared using the inventive method2O3It is slowly increased in crucible, melting alloy with high activity, fusion process in power, fusion process in recoil Ar gas, the temperature-fall period after melting, slowly reduces power, wall alloy with high activity produces the defects such as hole because cooling is very fast, it is to avoid Y2O3The cracking of crucible.Alloying component is uniform after the inventive method melting, crucible structure is complete, there is no sharp interface layer between alloy with high activity and crucible, oxygen content is low in alloy with high activity, alloy with high activity performance after melting is guaranteed, present invention process can adjust corresponding technological parameter according to different alloy features, with excellent industrial application prospect.
Description
Technical field
The present invention relates to a kind of its preparation method of melting container and its application, more particularly to a kind of refractory crucible
Preparation method and the application in Metal Melting, applied to high melt weatherable materials and non-ferrous metal Zirconium alloy material skill
Art field.
Background technology
Generally, zircaloy can be divided into two classes：Nuclear grade zirconium alloy and technical grade zircaloy.In nuclear industry, zirconium
Thermal neutron absorption cross section is small, to 2200m/s neutron, and the capture cross-section of pure zirconium only has 0.18 × 10-28m2, this is to ensure that
There are enough quantum count maintenance reaction heaps of hankering to run well in atomic reactor, therefore, zircaloy is mainly used as nuclear fuel
Cladding materials, the structural material of nuclear reactor, and security protection shielding material etc., zirconium is also referred to as atom-age
A number metal, is widely used in nuclear industry construction；In chemical engineering industry, it is widely used in reactor, valve, acid-proof pump, nozzle, appearance
In the equipment that device, pipeline etc. have higher requirements to material corrosion resistance.
But, in fusion process, zirconium melt it is active high, easily reacted with most of refractory material.Mesh
Before, the main method of melting zirconium and zircaloy is to utilize the vacuum arc furnace melting method of Forced water cooling system.But, electric arc melts
Refining needs self-made electrode, increases melting difficulty, easily produces segregation, and uneven components influence alloy property.In addition, forced water
Cooling system increases energy consumption.
Process for vacuum induction smelting can reduce production cost, next to that vaccum sensitive stove has stronger electromagnetic agitation to make
With, the degree of superheat for making alloy melt holding higher, this is conducive to eliminating component segregation, obtains the uniform zirconium material of composition.
Y2O3Excellent heat stability, refractoriness is high during for refractory material, can resist invading for high activity metal such as titanium, zirconium etc.
Erosion.By Y2O3Refractory material can prevent the reaction of crucible material and zircaloy melt as the container of melting zircaloy, reduce
Pollution of the crucible element to alloy, improves alloy degree of purity and performance.But existing preparation Y2O3The insufficient strength reason of crucible material
Think, easily ftractureed in applied to high activity metal fusion process, prepared high activity metal material is easy to hole occur
Defect, quality is more difficult to get guarantee, influences alloy property, and this turns into technical problem urgently to be resolved hurrily.
The content of the invention
In order to solve prior art problem, it is an object of the present invention to overcome the deficiencies of the prior art, and to provide one kind
Y2O3The preparation method of crucible and the application in high activity metal melting, Y is prepared using solid sintering technology2O3Crucible, using true
Empty induction furnace melting alloy with high activity.Alloying component is uniform after the inventive method melting, and crucible structure is complete, alloy and crucible it
Between there is no sharp interface layer, oxygen content is low in alloy, and the alloy property after melting is guaranteed.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of Y2O3The preparation method of crucible, comprises the following steps：
A. by dried Y2O3Powder is compressed to crucible biscuit under 100~140Mpa；
B. solid sintering technology is utilized, the crucible biscuit prepared in the step a is incubated 2 in the case where being not less than 1750 DEG C~
6h, carries out high temperature sintering, obtains Y2O3Crucible finished product.As currently preferred technical scheme, high temperature is being carried out to crucible biscuit
Before sintering, the crucible biscuit prepared in the step a is incubated 4~6h at 800~1000 DEG C first, pre-burning is carried out
Knot.
A kind of Y of the present invention2O3Y prepared by the preparation method of crucible2O3Application of the crucible in high activity metal melting, bag
Include following steps：
1. crucible type vacuum induction melting technique is utilized, using vaccum sensitive stove, from Y2O3It is prepared by the preparation method of crucible
Y2O3Crucible, as the melting container of crucible type vacuum induction melting technique, Y is placed in by high activity metal raw material2O3Crucible
In, after vacuum gas washing, high-altitude will be taken out in vaccum sensitive stove, melting then is carried out to high activity metal raw material, in crucible type
In vacuum induction melting technical process, 0.1kW speed is risen according to every 5~10min, vacuum induction melting technique is slowly increased
Heating power, to avoid splash and arch formation, until high activity metal raw material starts molten condition, starts high activity metal and melts
Refining process；Using crucible type vacuum induction melting technique, from Y2O3Y prepared by the preparation method of crucible2O3Crucible, preferred pair
Titanium, zirconium, titanium alloy or zircaloy carry out melting, it is only necessary to adjust corresponding technological parameter according to different alloy features；Enter one
The pure zirconium of preferred pair, sponge zirconium, zirconium copper alloy, Zirconium-nickel alloy, ferrozirconium, Zr-2, Zr-3 or Zr-4 progress melting are walked, according to not
Same alloy feature adjusts corresponding technological parameter；As currently preferred technical scheme, when carrying out vacuum gas washing, at least
Three low vacuum gas washings are carried out, high vacuum gas washing twice is then at least carried out again, vacuum gas scrubbing is completed；
2. the step 1. in high activity metal fusion process in, when high activity metal starts molten condition, just
To Y2O3Recoil Ar gas in crucible, keeps Y2O3High activity metal in crucible is melted in 500~650Pa Ar atmosphere is enclosed
Refining process；As currently preferred technical scheme, when the heating power of increase vacuum induction melting technique, in high activity metal
Raw material melts turn into after high activity metal melt completely, induction melting temperature is refined when reaching at least 1880 DEG C, controls
Refine at least 3min；
3. after the high activity metal fusion process in the step 2. terminates, 0.5kW speed drops according to every 5~10min,
Cooling processing is carried out to high activity metal, until high activity metal solidification, to avoid prepared high activity metal due to cooling
The defects such as hole comparatively fast are produced, and more efficiently avoid the cracking of crucible.
The present invention compared with prior art, substantive distinguishing features and remarkable advantage is obviously protruded with following：
1. the present invention prepares Y using solid sintering technology2O3Crucible, utilizes vacuum induction melting alloy with high activity, the present invention
Crucible structure prepared by method is complete, and the alloying component prepared after melting is uniform, does not have sharp interface layer between alloy and crucible,
Oxygen content is low in alloy, and the alloy with high activity performance after melting is guaranteed；
2. there is no sharp interface layer, the height of preparation between the crucible and alloy with high activity after melting high activity metal of the present invention
Reactive alloys quality is good, it is ensured that alloy property, and present invention process can adjust corresponding technique according to different alloy features joins
Number, with excellent industrial application prospect.
Embodiment
Details are as follows for the preferred embodiments of the present invention：
Embodiment one：
In the present embodiment, a kind of Y2O3The preparation method of crucible, comprises the following steps：
A. by the Y of dried purity >=99.92O3Powder is compressed to crucible biscuit under 120Mpa；
B. the crucible biscuit prepared in the step a is incubated 4h at 1000 DEG C, carried out pre-sintered；
C. solid sintering technology is utilized, the crucible biscuit after the pre-sintering in the step b is incubated 4h at 1750 DEG C, entered
Row high temperature sintering, obtains Y2O3Crucible finished product.
A kind of the present embodiment Y2O3Y prepared by the preparation method of crucible2O3Application of the crucible in Zr-4 alloy meltings, bag
Include following steps：
1. crucible type vacuum induction melting technique is utilized, using vacuum induction melting furnace (WZF-2 types), from Y2O3Crucible
Preparation method prepare Y2O3Crucible, as the melting container of crucible type vacuum induction melting technique, substrate is made with magnesia, will
Crucible is arranged in crucible type vacuum induction melting furnace, and Zr-4 alloy raw materials are placed in into Y2O3In crucible；Three low vacuum are carried out to wash
Gas, then carries out high vacuum gas washing twice again, then high-altitude will be taken out in vaccum sensitive stove, and then Zr-4 alloy raw materials are melted
Refining, in crucible type vacuum induction melting technical process, 0.1kW speed is risen according to every 5min, is slowly increased vacuum induction and is melted
The heating power of sweetening process, to avoid splash and arch formation, until Zr-4 alloy raw materials start molten condition, starts Zr-4 and closes
Golden fusion process；
2. the step 1. in Zr-4 alloy meltings during, control vacuum induction melting furnace heating power rise to
During 4.5kW, high vacuum valve is closed, when Zr-4 alloys start molten condition, just to Y2O3Recoil Ar gas in crucible, keeps Y2O3
Zr-4 alloys in crucible carry out fusion process in 600Pa Ar atmosphere is enclosed；Continue the heating of control vacuum induction melting furnace
When power rises to 5.0kW, after Zr-4 alloy raw materials melt turn into Zr-4 alloy melts completely, reach induction melting temperature
1880 DEG C, refined, and control to refine 3min；
3. after the Zr-4 alloy melting processes in the step 2. terminate, 0.5kW speed drops according to every 5min, to Zr-4
Alloy carries out cooling processing, until Zr-4 alloy grainings.Produced with avoiding prepared high activity metal because cooling is very fast
The defects such as hole, and more efficiently avoid the cracking of crucible.
The present embodiment melting mode is used for the technique of zircaloy melting from crucible type vacuum induction melting, and uses Y2O3
Crucible is as melting container, and crucible structure prepared by the present embodiment method is complete, and heat resistanceheat resistant vibration resistance is strong, not easy to crack.At this
In embodiment fusion process, power is slowly increased, it is to avoid the generation of splash and arch formation, the temperature-fall period after melting
In, slowly reduce power, it is to avoid alloy produces the defects such as hole because cooling is very fast, and further avoid opening for crucible
Split, the alloying component prepared after melting is uniform, there is no oxygen content in sharp interface layer, alloy low between alloy and crucible, melting
Alloy property afterwards is guaranteed.
Embodiment two：
The present embodiment and embodiment one are essentially identical, are particular in that：
In the present embodiment, a kind of Y2O3The preparation method of crucible, comprises the following steps：
A. by the Y of dried purity >=99.92O3Powder is compressed to crucible biscuit under 100Mpa；
B. the crucible biscuit prepared in the step a is incubated 6h at 800 DEG C, carried out pre-sintered；
C. solid sintering technology is utilized, the crucible biscuit after the pre-sintering in the step b is incubated 2h at 1750 DEG C, entered
Row high temperature sintering, obtains Y2O3Crucible finished product.Although the present embodiment is also adopted using the pressure forming biscuit lower than embodiment one
Pre-sintering is carried out with relatively low temperature, and solid-phase sintering, but system are carried out using the high temperature sintering time of only embodiment one 50%
Standby Y2O3Crucible equally has preferable intensity, not easy to crack.
A kind of the present embodiment Y2O3Y prepared by the preparation method of crucible2O3Application of the crucible in Zr-4 alloy meltings, bag
Include following steps：
1. crucible type vacuum induction melting technique is utilized, using vacuum induction melting furnace (WZF-2 types), from Y2O3Crucible
Preparation method prepare Y2O3Crucible, as the melting container of crucible type vacuum induction melting technique, substrate is made with magnesia, will
Crucible is arranged in crucible type vacuum induction melting furnace, and Zr-4 alloy raw materials are placed in into Y2O3In crucible；Three low vacuum are carried out to wash
Gas, then carries out high vacuum gas washing twice again, then high-altitude will be taken out in vaccum sensitive stove, and then Zr-4 alloy raw materials are melted
Refining, in crucible type vacuum induction melting technical process, 0.1kW speed is risen according to every 10min, is slowly increased vacuum induction and is melted
The heating power of sweetening process, to avoid splash and arch formation, until Zr-4 alloy raw materials start molten condition, starts Zr-4 and closes
Golden fusion process；
2. the step 1. in Zr-4 alloy meltings during, control vacuum induction melting furnace heating power rise to
During 4.5kW, high vacuum valve is closed, when Zr-4 alloys start molten condition, just to Y2O3Recoil Ar gas in crucible, keeps Y2O3
Zr-4 alloys in crucible carry out fusion process in 500Pa Ar atmosphere is enclosed；Continue the heating of control vacuum induction melting furnace
When power rises to 5.0kW, after Zr-4 alloy raw materials melt turn into Zr-4 alloy melts completely, reach induction melting temperature
1880 DEG C, refined, and control to refine 3min；
3. after the Zr-4 alloy melting processes in the step 2. terminate, 0.5kW speed drops according to every 10min, to Zr-
4 alloys carry out cooling processing, until Zr-4 alloy grainings.Produced with avoiding prepared high activity metal because cooling is very fast
The defects such as hole, and more efficiently avoid the cracking of crucible.
The present embodiment melting mode is used for the technique of zircaloy melting from crucible type vacuum induction melting, and uses Y2O3
Crucible is as melting container, and crucible structure prepared by the present embodiment method is complete, and heat resistanceheat resistant vibration resistance is strong, not easy to crack.At this
In embodiment fusion process, power is slowly increased, it is to avoid the generation of splash and arch formation, the temperature-fall period after melting
In, slowly reduce power, it is to avoid alloy produces the defects such as hole because cooling is very fast, and further avoid opening for crucible
Split, the alloying component prepared after melting is uniform, there is no oxygen content in sharp interface layer, alloy low between alloy and crucible, melting
Alloy property afterwards is guaranteed.
Embodiment three：
The present embodiment is substantially the same as in the previous example, and is particular in that：
In the present embodiment, a kind of Y2O3The preparation method of crucible, comprises the following steps：
A. by the Y of dried purity >=99.92O3Powder is compressed to crucible biscuit under 140Mpa；
B. the crucible biscuit prepared in the step a is incubated 6h at 1000 DEG C, carried out pre-sintered；
C. solid sintering technology is utilized, the crucible biscuit after the pre-sintering in the step b is incubated 6h at 1750 DEG C, entered
Row high temperature sintering, obtains Y2O3Crucible finished product.Although the present embodiment is also adopted using the pressure forming biscuit higher than embodiment one
Pre-sintering is carried out with higher temperature, and solid-phase sintering, but system are carried out using the only embodiment one longer high temperature sintering time
Standby Y2O3Crucible equally has preferable intensity, not easy to crack.
A kind of the present embodiment Y2O3Y prepared by the preparation method of crucible2O3Application of the crucible in Zr-4 alloy meltings, bag
Include following steps：
1. crucible type vacuum induction melting technique is utilized, using vacuum induction melting furnace (WZF-2 types), from Y2O3Crucible
Preparation method prepare Y2O3Crucible, as the melting container of crucible type vacuum induction melting technique, substrate is made with magnesia, will
Crucible is arranged in crucible type vacuum induction melting furnace, and Zr-4 alloy raw materials are placed in into Y2O3In crucible；Three low vacuum are carried out to wash
Gas, then carries out high vacuum gas washing twice again, then high-altitude will be taken out in vaccum sensitive stove, and then Zr-4 alloy raw materials are melted
Refining, in crucible type vacuum induction melting technical process, 0.1kW speed is risen according to every 10min, is slowly increased vacuum induction and is melted
The heating power of sweetening process, to avoid splash and arch formation, until Zr-4 alloy raw materials start molten condition, starts Zr-4 and closes
Golden fusion process；
2. the step 1. in Zr-4 alloy meltings during, control vacuum induction melting furnace heating power rise to
During 4.5kW, high vacuum valve is closed, when Zr-4 alloys start molten condition, just to Y2O3Recoil Ar gas in crucible, keeps Y2O3
Zr-4 alloys in crucible carry out fusion process in 650Pa Ar atmosphere is enclosed；Continue the heating of control vacuum induction melting furnace
When power rises to 5.0kW, after Zr-4 alloy raw materials melt turn into Zr-4 alloy melts completely, reach induction melting temperature
1880 DEG C, refined, and control to refine 3min；
3. after the Zr-4 alloy melting processes in the step 2. terminate, 0.5kW speed drops according to every 10min, to Zr-
4 alloys carry out cooling processing, until Zr-4 alloy grainings.Produced with avoiding prepared high activity metal because cooling is very fast
The defects such as hole, and more efficiently avoid the cracking of crucible.
The present embodiment melting mode is used for the technique of zircaloy melting from crucible type vacuum induction melting, and uses Y2O3
Crucible is as melting container, and crucible structure prepared by the present embodiment method is complete, and heat resistanceheat resistant vibration resistance is strong, not easy to crack.At this
In embodiment fusion process, power is slowly increased, it is to avoid the generation of splash and arch formation, the temperature-fall period after melting
In, slowly reduce power, it is to avoid alloy produces the defects such as hole because cooling is very fast, and further avoid opening for crucible
Split, the alloying component prepared after melting is uniform, there is no oxygen content in sharp interface layer, alloy low between alloy and crucible, melting
Alloy property afterwards is guaranteed.
Example IV：
The present embodiment is substantially the same as in the previous example, and is particular in that：
In the present embodiment, a kind of Y2O3The preparation method of crucible, comprises the following steps：
A. by the Y of dried purity >=99.92O3Powder is compressed to crucible biscuit under 120Mpa；
B. solid sintering technology is utilized, the crucible biscuit prepared in the step a is incubated 6h in the case where being not less than 1750 DEG C,
High temperature sintering is carried out, Y is obtained2O3Crucible finished product.The present embodiment is according to process requirements, by the pre-sintered step in previous embodiment
It is rapid to omit, make sintering process simpler.Although the present embodiment is consolidated using the high temperature sintering time longer than embodiment one
Phase sintering, and eliminate the step of pre-sintering, but the preparation Y prepared using abbreviated system2O3Crucible equally has preferably strong
Degree, it is not easy to crack.
A kind of the present embodiment Y2O3Y prepared by the preparation method of crucible2O3Application of the crucible in Zr-4 alloy meltings, bag
Include following steps：
1. this step is identical with embodiment one；
2. this step is identical with embodiment one；
3. this step is identical with embodiment one.In temperature-fall period after melting, power is slowly reduced, it is prepared to avoid
High activity metal produces the defects such as hole because cooling is very fast, and more efficiently avoids the cracking of crucible.
The present embodiment melting mode is used for the technique of zircaloy melting from crucible type vacuum induction melting, and uses Y2O3
Crucible is as melting container, and crucible structure prepared by the present embodiment method is complete, and preparation technology is simple, the crucible anti-thermal shock of preparation
Kinetic force is strong, not easy to crack.In the present embodiment fusion process, power is slowly increased, it is to avoid the hair of splash and arch formation
It is raw, in the temperature-fall period after melting, slowly reduce power, it is to avoid alloy because cooling is very fast produces the defects such as hole,
And further avoid the alloying component prepared after the cracking of crucible, melting uniformly, there is no sharp interface between alloy and crucible
Oxygen content is low in layer, alloy, and the alloy property after melting is guaranteed.
The embodiment of the present invention is illustrated above, but the invention is not restricted to above-described embodiment, can also be according to this hair
The purpose of bright innovation and creation makes a variety of changes, and that is done under all Spirit Essences and principle according to technical solution of the present invention changes
Become, modify, substitute, combine or simplify, should be equivalent substitute mode, as long as meeting the goal of the invention of the present invention, as long as not
Away from Y of the present invention2O3The technical principle and inventive concept of the preparation method of crucible and the application in high activity metal melting, all
Belong to protection scope of the present invention.
Claims (7)
1. a kind of Y2O3The preparation method of crucible, it is characterised in that：Comprise the following steps：
A. by dried Y2O3Powder is compressed to crucible biscuit under 100~140Mpa；
B. solid sintering technology is utilized, the crucible biscuit prepared in the step a is incubated 2~6h in the case where being not less than 1750 DEG C,
High temperature sintering is carried out, Y is obtained2O3Crucible finished product.
2. Y according to claim 12O3The preparation method of crucible, it is characterised in that：In the step b, to crucible element
Base is carried out before high temperature sintering, and the crucible biscuit prepared in the step a is incubated into 4~6h at 800~1000 DEG C first,
Carry out pre-sintered.
3. Y described in a kind of claim 12O3Y prepared by the preparation method of crucible2O3Crucible answering in high activity metal melting
With, it is characterised in that comprise the following steps：
1. crucible type vacuum induction melting technique is utilized, using vaccum sensitive stove, from Y2O3Prepared by the preparation method of crucible
Y2O3Crucible, as the melting container of crucible type vacuum induction melting technique, Y is placed in by high activity metal raw material2O3In crucible,
After vacuum gas washing, high-altitude will be taken out in vaccum sensitive stove, melting then is carried out to high activity metal raw material, in crucible type vacuum
In induction melting technical process, 0.1kW speed is risen according to every 5~10min, the heating of vacuum induction melting technique is slowly increased
Power, to avoid splash and arch formation, until high activity metal raw material starts molten condition, starts high activity metal melting
Journey；
2. the step 1. in high activity metal fusion process in, when high activity metal starts molten condition, just to Y2O3
Recoil Ar gas in crucible, keeps Y2O3High activity metal in crucible carries out fusion process in 500~650Pa Ar atmosphere is enclosed；
3. after the high activity metal fusion process in the step 2. terminates, 0.5kW speed drops according to every 5~10min, to height
Active metal carries out cooling processing, until high activity metal solidification.
4. Y according to claim 32O3Application of the crucible in high activity metal melting, it is characterised in that：In the step
1. in, using crucible type vacuum induction melting technique, from Y2O3Y prepared by the preparation method of crucible2O3Crucible, to titanium, zirconium,
Titanium alloy or zircaloy carry out melting.
5. Y according to claim 42O3Application of the crucible in high activity metal melting, it is characterised in that：In the step
1. in, using crucible type vacuum induction melting technique, from Y2O3Y prepared by the preparation method of crucible2O3Crucible, to pure zirconium, sea
Continuous zirconium, zirconium copper alloy, Zirconium-nickel alloy, ferrozirconium, Zr-2, Zr-3 or Zr-4 carry out melting.
6. the Y according to any one in claim 3~52O3Application of the crucible in high activity metal melting, its feature exists
In：The step 2. in, when increase vacuum induction melting technique heating power, be melted into completely in high activity metal raw material
After high activity metal melt, induction melting temperature is set to be refined when reaching at least 1880 DEG C, control refining at least 3min.
7. the Y according to any one in claim 3~52O3Application of the crucible in high activity metal melting, its feature exists
In：The step 1. in, carry out vacuum gas washing when, at least carry out three low vacuum gas washings, then at least carry out again twice
High vacuum gas washing, completes vacuum gas scrubbing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623315A (en) * | 2018-05-03 | 2018-10-09 | 苏州卫优知识产权运营有限公司 | A kind of preparation process of titanium alloy smelting oxidation yttrium powder |
| CN111992725A (en) * | 2020-07-31 | 2020-11-27 | 湖南稀土金属材料研究院 | Zr2Preparation method and application of Fe alloy powder |
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| CN103526037A (en) * | 2013-09-18 | 2014-01-22 | 北京航空航天大学 | Method for purified smelting of high-temperature alloy by using yttrium oxide crucible |
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| CN101628812A (en) * | 2008-07-14 | 2010-01-20 | 东北大学 | Method for preparing compact yttria ceramics |
| CN101381242A (en) * | 2008-10-10 | 2009-03-11 | 东北大学 | Method for preparing crucible for smelting titanium and titanium alloys |
| CN103498063A (en) * | 2013-09-18 | 2014-01-08 | 北京航空航天大学 | Method for performing purified smelting on high-temperature alloy return material by using yttrium oxide crucible |
| CN103526037A (en) * | 2013-09-18 | 2014-01-22 | 北京航空航天大学 | Method for purified smelting of high-temperature alloy by using yttrium oxide crucible |
| CN106086520A (en) * | 2016-08-30 | 2016-11-09 | 上海大学 | Zircaloy smelting technology |
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| CN108623315A (en) * | 2018-05-03 | 2018-10-09 | 苏州卫优知识产权运营有限公司 | A kind of preparation process of titanium alloy smelting oxidation yttrium powder |
| CN111992725A (en) * | 2020-07-31 | 2020-11-27 | 湖南稀土金属材料研究院 | Zr2Preparation method and application of Fe alloy powder |
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