CN107574322B - A kind of method that electron-beam smelting technology High Purity prepares nickel base superalloy - Google Patents
A kind of method that electron-beam smelting technology High Purity prepares nickel base superalloy Download PDFInfo
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- CN107574322B CN107574322B CN201710756120.8A CN201710756120A CN107574322B CN 107574322 B CN107574322 B CN 107574322B CN 201710756120 A CN201710756120 A CN 201710756120A CN 107574322 B CN107574322 B CN 107574322B
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- 238000000034 method Methods 0.000 title claims abstract description 42
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000003723 Smelting Methods 0.000 title claims abstract description 33
- 238000005516 engineering process Methods 0.000 title claims abstract description 28
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 21
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 17
- 229910000601 superalloy Inorganic materials 0.000 title claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 65
- 230000008018 melting Effects 0.000 claims abstract description 65
- 239000002994 raw material Substances 0.000 claims abstract description 35
- 239000000956 alloy Substances 0.000 claims abstract description 33
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000005086 pumping Methods 0.000 claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 66
- 229910052802 copper Inorganic materials 0.000 claims description 66
- 239000010949 copper Substances 0.000 claims description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 64
- 238000007711 solidification Methods 0.000 claims description 33
- 230000008023 solidification Effects 0.000 claims description 33
- 238000007670 refining Methods 0.000 claims description 25
- 239000000155 melt Substances 0.000 claims description 18
- 239000012535 impurity Substances 0.000 claims description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000005204 segregation Methods 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 3
- 239000011785 micronutrient Substances 0.000 abstract description 2
- 235000013369 micronutrients Nutrition 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052571 earthenware Inorganic materials 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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Abstract
The invention discloses a kind of methods that electron-beam smelting technology High Purity prepares nickel base superalloy, have following steps: S1, raw material preparation: S11, pretreatment, S12, charging；S2, melting prepare: S21, vacuum take out in advance, S22, pumping high vacuum, S23, filament pre-heating；S3, melting；S4, step S3 is repeated, until obtaining the alloy of required size.The present invention can increase substantially alloy cast ingot metallurgical quality, while reduce the micronutrient levels such as C, N, P, O in alloy；Yield is improved to 85% or more；The gross segregation of alloy can be controlled in minimum range, effectively shorten time of the techniques such as subsequent heat treatment；The engineering preparation of large-scale casting ingot can be achieved.
Description
Technical field
The present invention relates to a kind of methods that electron-beam smelting technology High Purity prepares nickel base superalloy.
Background technique
Aero-engine is the main bottleneck for restricting China's aviation development.Advanced aero-engine need to meet following
Four important indicators: big thrust ratio, high reliability, high operational stability and low burn specific oil consumption.Big thrust ratio is obtained,
High-temperature alloy material with advanced feature is one of its main support technology.Cause the huge important original of domestic and external gap
Alloy impurity control of element level because being domestic production is lower, and metallurgical quality is poor.Alloy impurity element holds high temperature alloy
Long, the performances such as creep can produce serious influence, it is necessary to which their content and quantity are controlled to alap level.So
The preparation of high temperature alloy master alloy is a very important ring in high temperature alloy production procedure.Changed from smelting technology angle
Into preparing the high temperature alloy master alloy of High Purity, can fundamentally guarantee the service performance of alloy.
Domestic nickel base superalloy technology of preparing is on the basis of vacuum induction melting (VIM), in conjunction with vacuum at present
Consumable (VAR) technology and electroslag remelting (ESR) technology, use double melting technique (VIM+VAR or VIM+ESR) or three meltings
Technique (VIM+ESR+VAR) prepares alloy cast ingot.The refractory material that process for vacuum induction smelting uses can introduce new impurity and lead
Melt contamination is caused finally to reside in ingot casting, and ingot casting coarse grains, uneven, solidifying segregation is more serious, shrinkage cavity is big；And
Although ESR and VAR technology as secondary smelting technology substantially improves the problem of VIM technology is left, but its casting produced
Ingot equally exists many shortcomings.If ESR technology slag absorbs gas, new impurity may be generated with fusant reaction；VAR institute
It is poor to obtain ingot surface quality, and causes alloy cast ingot internal soundness poor since shrinkage cavity cannot completely eliminate, impurity decomposes again
It generates, can be still present in alloy in the form of Dispersed precipitate.
Beam bombardment base material of electron-beam smelting technology under conditions of high vacuum using high-energy density makes it completely
Melt, and molten bath is made to keep the regular hour at a higher temperature, to realize the melting to metal material, purify and go
It is miscellaneous.Its vacuum degree is much higher relative to traditional melting technique, generally 10-1~10-3Pa, for gas, the non-gold in base material
Category is mingled with and the removal of volatile impurity is more completely more thorough.In addition, the use of water jacketed copper crucible is avoiding introducing newly miscellaneous
In the case where matter, bigger temperature gradient is provided for the solidification of alloy, so that solidification rate is very fast, to obtain low segregation
High temperature alloy.Therefore, a kind of method that High Purity based on electron-beam smelting technology prepares nickel base superalloy is urgently researched and developed.
Summary of the invention
According to technical problem set forth above, and a kind of electron-beam smelting technology High Purity is provided and prepares nickel base superalloy
Method.The present invention is based on the refining condition that electron beam is excellent, fusion process and the process of setting water that use two different
Cold copper crucible can increase substantially alloy cast ingot metallurgical quality, reduce simultaneously so that gained alloy does not have impurity enriched area
The micronutrient levels such as C, N, P, O in alloy；Yield is improved, until 85% or more；The gross segregation of alloy can be controlled
In minimum range, time of the techniques such as subsequent heat treatment is effectively shortened；Developing equipment can be achieved large-scale casting ingot engineering system
It is standby.
The technological means that the present invention uses is as follows:
A kind of method that electron-beam smelting technology High Purity prepares nickel base superalloy has following steps:
S1, raw material preparation
S11, pretreatment: the ingot casting that VIM melting is obtained is as the raw material of electron-beam smelting；It will be former before carrying out melting
The surface of material is polished, and cutting trace, greasy dirt, impurity and the defect on raw material surface are removed；Finally used in supersonic cleaning machine
Alcohol cleans up raw material；
S12, charging: the intracavitary refining of melting is added using the certain content of starting materials pre-processed as raw material required for melting
In water jacketed copper crucible, remaining is placed on charging mechanism；
S2, melting prepare
S21, vacuum are taken out in advance: after charging, being closed fire door progress vacuum and taken out in advance；
S22, pumping high vacuum: vacuum exhausts complete, first gun gun body intracavitary to melting and the second electron gun gun body pumping in advance
High vacuum；
S23, filament pre-heating；
S3, melting
First gun is opened by console after filament pre-heating and starts melting, is slowly increased with 5~10mA/s speed
Add first gun line to determined technique, determined technique is that first gun monitor system is 9~15kW, first gun beam
Spot setting value is 10 × 10 (for parameter shown by equipment, can set its value to change the size of beam spot), first gun beam
Spot size is φ 5mm~φ 50mm；
Control first gun beam spot motion profile melts the raw material refined in water jacketed copper crucible completely, starts to melt at this time
Timing is refined, when first gun smelting time reaches 2.5~15min, slowly reduces first gun line size and beam spot
While size, the melt refined in water jacketed copper crucible is poured slowly into solidification water jacketed copper crucible, and open the second electron gun
Start to carry out melting to the melt in solidification water jacketed copper crucible, the second electron gun line is slowly increased extremely with 5~10mA/s speed
Determined technique, determined technique are that the second electron gun monitor system is 9~15kW, and the second electron gun beam spot setting value is 10 × 10
(for parameter shown by equipment, can set its value to change the size of beam spot), the second electron gun beam spot size are φ 5mm~φ
50mm；
During melt in refining water jacketed copper crucible is poured slowly into solidification water jacketed copper crucible, first gun beam spot begins
Eventually on melt, and keep its liquid；
When the melt in refining water jacketed copper crucible pours into solidification water jacketed copper crucible completely, first gun line drops immediately
It is 0, and restores first gun beam spot as low as setting value 10 × 10 greatly, starts simultaneously at timing, and it is extensive to refine water jacketed copper crucible
Feeding device is opened in position when remelt refines, and raw material required for melting is added；When the second electron gun smelting time reaches 2.5
When~15min, the second electron gun line is instantaneously dropped to 0, makes to solidify the melt solidification in water jacketed copper crucible；First is opened later
Electron gun starts to the raw material melting in refining water jacketed copper crucible；
S4, step S3 is repeated, until obtaining the alloy of required size.
In the step S21, when the raw material of institute's melting is not oxidizable, in the intracavitary vacuum degree≤10Pa of melting, vacuum
It exhausts in advance complete；
When the raw material of institute's melting is easy to oxidize, in the intracavitary vacuum degree < 8Pa of melting, pause is vacuumized, and to melting chamber
It is inside passed through a certain amount of argon gas, when air pressure stops ventilation not in variation in it, progress vacuum is taken out in advance again, this process carries out
After repeatedly, vacuum exhausts complete in advance.
In the step S22, after pumping high vacuum, the intracavitary vacuum degree < 5 × 10 of melting-2Pa, first gun gun body and
Two electron gun gun body vacuum degree < 5 × 10-3Pa。
The first gun smelting time is equal to the second electron gun smelting time.
The time for opening the second electron gun is to pour into the melt refined in water jacketed copper crucible in solidification water jacketed copper crucible, is melted
Body covers solidification water jacketed copper crucible bottom surface or covers the alloy surface solidified in solidification water jacketed copper crucible.
Raw material required for the melting is added every time will guarantee the thickness that its molten state is poured onto after solidification water jacketed copper crucible
Degree is consistent and thickness is between 3~10mm.Since solidification water jacketed copper crucible can provide biggish temperature gradient, cause melt cold
But speed is exceedingly fast, and because the thickness of melt is smaller, gross segregation is minimum after solidification.But also subsequent heat treatment is equal
It the techniques duration such as homogenizes to shorten.
The present invention can increase substantially alloy cast ingot metallurgical quality, while reduce the micro member such as C, N, P, O in alloy
Cellulose content；Yield is improved to 85% or more；The gross segregation of alloy can be controlled in minimum range, after effectively shortening
The time of the techniques such as continuous heat treatment；The engineering preparation of large-scale casting ingot can be achieved.
The present invention can be widely popularized in fields such as alloy preparations based on the above reasons.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that a kind of electron-beam smelting technology High Purity prepares nickel base superalloy in a specific embodiment of the invention
The equipment schematic diagram of method.
Fig. 2 is the structural schematic diagram that water jacketed copper crucible is refined in a specific embodiment of the invention.
Fig. 3 is that water jacketed copper crucible and rotating device assembling schematic diagram are solidified in a specific embodiment of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is the equipment schematic diagram for a kind of method that electron-beam smelting technology High Purity prepares nickel base superalloy, described
Equipment includes feed opening 1, charging mechanism slideway 2, charging mechanism 3, refines water jacketed copper crucible 4, refining copple lifting device 5, the
One electron gun 6, the second electron gun 7 solidify water jacketed copper crucible 8 and rotating device 10；
The feed opening 1 is located at the top of melting chamber 9, and the feed inlet of the charging mechanism 3 is located under the feed opening 1
End, the discharge port of the charging mechanism 3 are located at the top of the refining water jacketed copper crucible 4, and the charging mechanism 3 can add along described
Expect that mechanism slideway 2 slides, is moved to the discharge port of the charging mechanism 3 by the side of the refining water jacketed copper crucible 4 another
The bottom of side, the refining water jacketed copper crucible 4 is rotatablely connected by the side wall of shaft and the melting chamber 9, the refining copple
Lifting device 5 is tilted for driving the refining water jacketed copper crucible 4 to rotate around the shaft, and described solidification water jacketed copper crucible 8
In it is described refining water jacketed copper crucible 4 inclined side lower section and connect by the rotating device 10 with the melting chamber 9, it is described
First gun 6 is located at the top of the refining water jacketed copper crucible 4, and second electron gun 7 is located at the solidification water-cooled copper earthenware
The top of crucible 8.
As shown in Figure 1-Figure 3, a kind of method that electron-beam smelting technology High Purity prepares nickel base superalloy has as follows
Step:
S1, raw material preparation
S11, pretreatment: the ingot casting that VIM melting is obtained is as the raw material of electron-beam smelting；It will be former before carrying out melting
The surface of material is polished, and cutting trace, greasy dirt, impurity and the defect on raw material surface are removed；Finally used in supersonic cleaning machine
Alcohol cleans up raw material；
S12, charging: the intracavitary refining of melting is added using the certain content of starting materials pre-processed as raw material required for melting
In water jacketed copper crucible 4, remaining is placed on charging mechanism；
S2, melting prepare
S21, vacuum are taken out in advance: after charging, being closed fire door progress vacuum and taken out in advance；
S22, pumping high vacuum: vacuum exhaust in advance it is complete, in melting chamber 9,7 rifle of 6 gun body of first gun and the second electron gun
Body pumping high vacuum；
S23, filament pre-heating；
S3, melting
First gun 6 is opened by console after filament pre-heating and starts melting, is slowly increased with 5~10mA/s speed
Add 6 line of first gun to determined technique, for the present embodiment for refining IN718 high temperature alloy, determined technique is the first electricity
Sub- 6 monitor system of rifle is 12kW, and 6 beam spot setting value of first gun is 10 × 10, and 6 beam spot size of first gun is φ 5mm
~φ 50mm；
Control 6 beam spot motion profile of first gun melts the raw material refined in water jacketed copper crucible 4 completely, starts at this time
Melting timing slowly reduces by 6 line size of first gun and beam spot is big when 6 smelting time of first gun reaches 5min
While small, start the refining copple lifting device 5 and the rotating device 10, the melt in water jacketed copper crucible 6 will be refined
It is poured slowly into solidification water jacketed copper crucible 8, and opens the second electron gun 7 and start to carry out the melt in solidification water jacketed copper crucible 8
Melting is slowly increased 7 line of the second electron gun to determined technique with 5~10mA/s speed, and determined technique is molten for the second electron gun 7
Downlink power is 12kW, and 7 beam spot setting value of the second electron gun is 10 × 10, and 7 beam spot size of the second electron gun is φ 5mm~φ
50mm；
During melt in refining water jacketed copper crucible is poured slowly into solidification water jacketed copper crucible, first gun beam spot begins
Eventually on melt, and keep its liquid；
When the melt in refining water jacketed copper crucible 4 pours into solidification water jacketed copper crucible 8 completely, 6 line of first gun is vertical
It is reduced to 0, and restores 6 beam spot of first gun as low as setting value 10 × 10 greatly, starts simultaneously at timing, and water-cooled copper earthenware will be refined
Crucible 4 restores position when melting, opens feeding device, and raw material required for melting is added；When 7 smelting time of the second electron gun reaches
When to 5min, 7 line of the second electron gun is instantaneously dropped to 0, makes to solidify the melt solidification in water jacketed copper crucible 8；Is opened later
One electron gun 6 starts to the raw material melting in refining water jacketed copper crucible 4；
S4, step S3 is repeated, until obtaining the alloy of required size.
In the step S21, when the raw material of institute's melting is not oxidizable, in melting chamber 9 when vacuum degree≤10Pa, vacuum
It exhausts in advance complete；
When the raw material of institute's melting is easy to oxidize, in melting chamber 9 when vacuum degree < 8Pa, pause is vacuumized, and to melting
A certain amount of argon gas is passed through in chamber 9, when in it air pressure not variation when, stop ventilation, again carry out vacuum take out in advance, this process into
After row is multiple, vacuum exhausts complete in advance.
In the step S22, after pumping high vacuum, vacuum degree < 5 × 10 in melting chamber 9-2Pa, 6 gun body of first gun and
Second electron gun, 7 gun body vacuum degree < 5 × 10-3Pa。
The time for opening the second electron gun 7 is that the melt refined in water jacketed copper crucible 4 is poured into solidification water jacketed copper crucible 8
In, melt covers solidification 8 bottom surface of water jacketed copper crucible or covers the alloy surface solidified in solidification water jacketed copper crucible 8.
Raw material required for the melting is added every time will guarantee the thickness that its molten state is poured onto after solidification water jacketed copper crucible 8
Degree is consistent and thickness is between 3~10mm.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
1. a kind of method that electron-beam smelting technology High Purity prepares nickel base superalloy, it is characterised in that have following steps:
S1, raw material preparation
S11, pretreatment: the ingot casting that VIM melting is obtained is as the raw material of electron-beam smelting；By raw material before carrying out melting
Surface is polished, and cutting trace, greasy dirt, impurity and the defect on raw material surface are removed；Alcohol is finally used in supersonic cleaning machine
Raw material is cleaned up；
S12, charging: the intracavitary refining water cooling of melting is added using the certain content of starting materials pre-processed as raw material required for melting
In copper crucible, remaining is placed on charging mechanism；
S2, melting prepare
S21, vacuum are taken out in advance: after charging, being closed fire door progress vacuum and taken out in advance；
S22, pumping high vacuum: vacuum exhausts complete, first gun gun body intracavitary to melting and the second electron gun gun body pumping Gao Zhen in advance
It is empty；
S23, filament pre-heating；
S3, melting
First gun is opened by console after filament pre-heating and starts melting, is slowly increased the with 5~10mA/s speed
One electron gun line is to determined technique, and determined technique is that first gun monitor system is 9~15kW, and first gun beam spot is set
Definite value is 10 × 10, and first gun beam spot size is φ 5mm~φ 50mm；
Control first gun beam spot motion profile melts the raw material refined in water jacketed copper crucible completely, starts melting meter at this time
When, when first gun smelting time reaches 2.5~15min, slowly reduce first gun line size and beam spot size
While, the melt refined in water jacketed copper crucible is poured slowly into solidification water jacketed copper crucible, and open the second electron gun and start
Melting is carried out to the melt in solidification water jacketed copper crucible, the second electron gun line is slowly increased with 5~10mA/s speed and is extremely determined
Technique, determined technique are that the second electron gun monitor system is 9~15kW, and the second electron gun beam spot setting value is 10 × 10, second
Electron gun beam spot size is φ 5mm~φ 50mm；
During melt in refining water jacketed copper crucible is poured slowly into solidification water jacketed copper crucible, first gun beam spot exists always
On melt, and keep its liquid；
When the melt in refining water jacketed copper crucible pours into solidification water jacketed copper crucible completely, first gun line is reduced to 0 immediately,
And restore first gun beam spot as low as setting value 10 × 10 greatly, timing is started simultaneously at, and refining water jacketed copper crucible is restored molten
Feeding device is opened in position when refining, and raw material required for melting is added；When the second electron gun smelting time reaches 2.5~
When 15min, the second electron gun line is instantaneously dropped to 0, makes to solidify the melt solidification in water jacketed copper crucible；The first electricity is opened later
Sub- rifle starts to the raw material melting in refining water jacketed copper crucible；
S4, step S3 is repeated, until obtaining the alloy of required size.
2. the method that a kind of electron-beam smelting technology High Purity according to claim 1 prepares nickel base superalloy, special
Sign is: in the step S21, when the raw material of institute's melting is not oxidizable, in the intracavitary vacuum degree≤10Pa of melting, vacuum is pre-
It exhausts complete；
When the raw material of institute's melting is easy to oxidize, in the intracavitary vacuum degree < 8Pa of melting, pause is vacuumized, and intracavitary logical to melting
Enter a certain amount of argon gas, when air pressure stops ventilation not in variation in it, progress vacuum is taken out in advance again, this process carries out multiple
Afterwards, vacuum exhausts complete in advance.
3. the method that a kind of electron-beam smelting technology High Purity according to claim 1 prepares nickel base superalloy, special
Sign is: in the step S22, after pumping high vacuum, and the intracavitary vacuum degree < 5 × 10 of melting-2Pa, first gun gun body and second
Electron gun gun body vacuum degree < 5 × 10-3Pa。
4. the method that a kind of electron-beam smelting technology High Purity according to claim 1 prepares nickel base superalloy, special
Sign is: the first gun smelting time is equal to the second electron gun smelting time.
5. the method that a kind of electron-beam smelting technology High Purity according to claim 1 prepares nickel base superalloy, special
Sign is: the time for opening the second electron gun is to pour into the melt refined in water jacketed copper crucible in solidification water jacketed copper crucible, is melted
Body covers solidification water jacketed copper crucible bottom surface or covers the alloy surface solidified in solidification water jacketed copper crucible.
6. the method that a kind of electron-beam smelting technology High Purity according to claim 1 prepares nickel base superalloy, special
Sign is: raw material required for the melting is added every time will guarantee the thickness that its molten state is poured onto after solidification water jacketed copper crucible
Consistent and thickness is between 3~10mm.
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| CN112760508A (en) * | 2020-12-28 | 2021-05-07 | 大连理工大学 | Method for continuously refining high-temperature alloy return material by using electron beams |
| CN114686729B (en) * | 2022-02-22 | 2023-05-30 | 大连理工大学 | Material for 850 ℃ -grade deformation turbine disk for long term and electron beam continuous in-situ solidification preparation method thereof |
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| JPH04297532A (en) * | 1991-03-27 | 1992-10-21 | Nippon Stainless Steel Co Ltd | Production of niti alloy |
| CN101525698A (en) * | 2009-04-23 | 2009-09-09 | 金川集团有限公司 | Method for preparing high-purity nickel ingot |
| JP5729816B2 (en) * | 2011-06-18 | 2015-06-03 | 東邦チタニウム株式会社 | Melting raw material for metal production and method for melting metal using the same |
| CN103290230B (en) * | 2013-04-10 | 2014-12-10 | 大连理工大学 | Preparation method for nickel-based high temperature alloy by using electron beam melting |
| CN105695777B (en) * | 2016-03-11 | 2017-10-24 | 大连理工大学 | The method that electron beam directional solidification technique refines nickel base superalloy |
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