CN106825505A - A kind of vacuum casting method of nickel base superalloy ingot casting - Google Patents
A kind of vacuum casting method of nickel base superalloy ingot casting Download PDFInfo
- Publication number
- CN106825505A CN106825505A CN201611268089.5A CN201611268089A CN106825505A CN 106825505 A CN106825505 A CN 106825505A CN 201611268089 A CN201611268089 A CN 201611268089A CN 106825505 A CN106825505 A CN 106825505A
- Authority
- CN
- China
- Prior art keywords
- mould
- copper plate
- temperature gradient
- cooled copper
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005266 casting Methods 0.000 title abstract description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title abstract description 18
- 238000000034 method Methods 0.000 title abstract description 14
- 229910052759 nickel Inorganic materials 0.000 title abstract description 8
- 229910000601 superalloy Inorganic materials 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000010438 heat treatment Methods 0.000 abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052802 copper Inorganic materials 0.000 abstract description 8
- 239000010949 copper Substances 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 8
- 239000000779 smoke Substances 0.000 abstract description 5
- 102000010637 Aquaporins Human genes 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 3
- 108010063290 Aquaporins Proteins 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 230000008018 melting Effects 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000006698 induction Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052702 rhenium Inorganic materials 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of vacuum casting method of nickel base superalloy, including mould, mold bottom is provided with water cooled copper plate, there is circulating cooling aquaporin in water cooled copper plate, make one longitudinal temperature gradient from bottom to top of melt composition, mould first while and side is provided with water smoke cold shower nozzle when second, 3rd while and corner connection when the 4th be provided with resistance heating body, make one Transverse Temperature Gradient from side to opposite side of melt composition, longitudinal temperature gradient above and transverse temperature form an oblique thermograde, make solid liquid interface from first while and when second junction bottom to the 3rd while and the top of junction advances when the 4th, final set position be located at the 3rd while and when the 4th near junction, shrinkage cavity shrinkage porosity is concentrated on this.
Description
Technical field
The invention belongs to materials processing technology field, more particularly, to a kind of vacuum pressing and casting of nickel base superalloy ingot casting ingot
Method.
Background technology
Nickel base superalloy is that possess unusual yield strength-temperature effect, and wear-resistant and corrosion resistance very high
Can, the important feature material in the fields such as contemporary aerospace industry, civilian industry is had become, particularly in aero-engine leaf
Piece field has broad application prospects.3D printing, or increasing material manufacturing is used as a kind of quick shaping process of rising in recent years,
Using successively powdering, laser or electron beam melt the mode being molded, and realize the finishing shaping of precise part, and avoid
The defects such as the shrinkage cavity shrinkage porosity that casting process occurs, as a kind of emerging material manufacturing process.
Powder used by current 3D printing, typically by vacuum pouring after melting into ingot casting, subsequent secondary smelting is simultaneously used
The mode for being atomized legal system powder is obtained, and in vacuum melting and casting process, melting is protected typically in vacuum induction melting furnace
Be poured into mould after temperature, due to needed after mould preheating experience be put into induction furnace, vacuumize, melting, the process, temperature such as cast
Can decline, while alloy pig center easily the problems such as shrinkage cavity, gross segregation occurs, cause ingot casting utilization rate to decline, and rear
In continuous cutting process, be easy to adhere to dirt in shrinkage cavity, and be difficult to clean off, thus find it is a kind of reduce ingot casting shrinkage cavity and avoid with
The casting method of mould reaction has great importance.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of vacuum casting method of nickel base superalloy.
The complete technical scheme of the present invention includes：
A kind of vacuum casting method of nickel base superalloy, comprises the following steps, induction melting furnace is closed, and sealing is taken out true
Sky, opening induction heating method carries out fused when heated metal, and smelting temperature is 1800-1850 DEG C, and 5- is incubated after being completely melt
Poured into a mould after 10min, metal bath flows into mould；
Described mold height is 50-60cm, and mould cross section is rectangle, and size is 25cm*25cm, including is sequentially connected
First while, second while, the 3rd while and when the 4th, mold bottom is provided with water cooled copper plate, has recirculated cooling water to lead in water cooled copper plate
Road, first while and side is provided with water smoke cold shower nozzle when second, first while and junction is round-corner transition when second, the 3rd side and the
The corner connection on four sides is provided with resistance heating body；
After metal bath pours into mould, the water cooled copper plate of mold bottom is cooled down in bottom to mould, and cooling water inflow is
20L/min, makes one longitudinal temperature gradient from bottom to top of melt composition, the cold shower nozzle of water smoke to the first of mould while and when second
Cooled down, atomisation pressure is 0.1-0.15Mpa, resistance heating body to the 3rd while and corner connection heating when the 4th, electricity
Resistance heating-up temperature is 600-800 DEG C, makes one Transverse Temperature Gradient from side to opposite side of melt composition,
After solidification terminates, the demoulding is taken out, excision the 3rd while and when the 4th edge part, obtain alloy cast ingot.
The alloy compositions of selection are to include Al by atomic percent：20-30%, Cr：2-2.8%, Nb：1.5-2.5%,
Re：0.2-0.8%, balance of Ni.
The present invention is relative to the advantage of prior art：
The production of ingot casting in the prior art typically uses cylindrical ingot, partly makes it by the way of by bottom coohng
Solidification, the problem that aforesaid way brings is that final set position is located at ingot casting center, is formed along the shrinkage cavity shrinkage porosity of ingot casting axis, on
State shrinkage cavity shrinkage porosity and bring very big trouble, it is necessary to be cut along axis in following process process, be then sliced out shrinkage cavity part, this hair
Bright to be cooled down using bottom and two sides by designing square ingot casting, the mode of two sides insulation, forms oblique temperature ladder in addition
Degree, final set position concentrates on the edge of two sides, it is to avoid the shrinkage cavity of center, be only need to be performed in following process
Once cut, improve ingot casting utilization rate and production efficiency.
Brief description of the drawings
Fig. 1 is present invention casting mould front view used.
Fig. 2 is present invention casting mould top view used.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
The alloy compositions of selection are to include Al by atomic percent：20-30%, Cr：2-2.8%, Nb：1.5-2.5%,
Re：0.2-0.8%, balance of Ni.
A kind of vacuum casting method of nickel base superalloy ingot casting, induction melting furnace is closed, and sealing is evacuated down to 10-3-
10-4Pa, opening induction heating method carries out fused when heated alloy, and heating power is 250-300KW, and smelting temperature is 1800-
1850 DEG C, poured into a mould after 5-10min is incubated after being completely melt, metal bath flows into mould 1；
Described mold height is 50-60cm, and mould cross section is rectangle, and size is 25cm*25cm, including is sequentially connected
First at 2, second the 3, the 3rd in 4 and the 4th while 5, mold bottom is provided with water cooled copper plate 6, there is circulating cooling in water cooled copper plate
Water channel 7, the circulating cooling aquaporin is maze-type structure, first while and side is provided with the cold shower nozzle 8 of water smoke, the first side when second
Be round-corner transition with the second side junction, the 3rd while and corner connection when the 4th be provided with resistance heating body 9, the resistance heating
Body is the burner hearth for cutting into sector, embeds resistance furnace silk, resistance wire connection power supply, just to the 3rd while and turning connection when the 4th
Place.
After metal bath pours into mould, the water cooled copper plate of mold bottom is cooled down in bottom to mould, and cooling water inflow is
20L/min, makes one longitudinal temperature gradient from bottom to top of melt composition, the cold shower nozzle of water smoke to the first of mould while and when second
Cooled down, atomisation pressure is 0.1-0.15Mpa, resistance heating body to the 3rd while and corner connection heating when the 4th, make
One Transverse Temperature Gradient from side to opposite side of melt composition, resistance heating temperature is 600-800 DEG C,
More than longitudinal temperature gradient and transverse temperature form an oblique thermograde, make solid liquid interface from the first side and
Second when the bottom of junction is to the 3rd and the 4th side junction top propulsion, final set position is located at the 3rd side and the
Near four sides junction, shrinkage cavity shrinkage porosity is concentrated on this.
Setting time is 4-5min, and after solidification terminates, the demoulding is taken out, excision the 3rd while and when the 4th edge part,
Obtain alloy cast ingot.
The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (2)
1. a kind of vacuum casting method of nickel base superalloy, comprises the following steps, induction melting furnace is closed, and sealing is taken out true
Sky, opening induction heating method carries out fused when heated metal, and smelting temperature is 1800-1850 DEG C, and 5- is incubated after being completely melt
Poured into a mould after 10min, metal bath flows into mould；
Described mold height is 50-60cm, and mould cross section is rectangle, and size is 25cm*25cm, including for being sequentially connected
On one side, second while, the 3rd while and the 4th side, mold bottom is provided with water cooled copper plate, there is circulating cooling aquaporin in water cooled copper plate,
While and the second side side be provided with the cold shower nozzle of water smoke, first while and junction is round-corner transition when second, the 3rd while and when the 4th
Corner connection be provided with resistance heating body；
After metal bath pours into mould, the water cooled copper plate of mold bottom is cooled down in bottom to mould, and cooling water inflow is 20L/
Min, makes one longitudinal temperature gradient from bottom to top of melt composition, the cold shower nozzle of water smoke to the first of mould while and carry out when second
Cooling, atomisation pressure is 0.1-0.15Mpa, resistance heating body to the 3rd while and corner connection heating when the 4th, resistance adds
Hot temperature is 600-800 DEG C, makes one Transverse Temperature Gradient from side to opposite side of melt composition,
After solidification terminates, the demoulding is taken out, excision the 3rd while and when the 4th edge part, obtain alloy cast ingot.
2. the method described in claim 1, it is characterised in that the alloy compositions of selection are to include Al by atomic percent：20-
30%, Cr：2-2.8%, Nb：1.5-2.5%, Re：0.2-0.8%, balance of Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268089.5A CN106825505B (en) | 2016-12-31 | 2016-12-31 | A kind of vacuum casting method of nickel base superalloy ingot casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268089.5A CN106825505B (en) | 2016-12-31 | 2016-12-31 | A kind of vacuum casting method of nickel base superalloy ingot casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106825505A true CN106825505A (en) | 2017-06-13 |
| CN106825505B CN106825505B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611268089.5A Active CN106825505B (en) | 2016-12-31 | 2016-12-31 | A kind of vacuum casting method of nickel base superalloy ingot casting |
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| Country | Link |
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| CN (1) | CN106825505B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574337A (en) * | 2017-08-03 | 2018-01-12 | 上海交通大学 | A kind of Ni Al RE ternary eutectic alloys and preparation method thereof |
| CN111203521A (en) * | 2020-01-09 | 2020-05-29 | 上海大学 | Annular ingot casting equipment and casting method thereof |
| CN112410618A (en) * | 2020-11-19 | 2021-02-26 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Preparation method of GH4698 high-temperature alloy die |
Citations (5)
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|---|---|---|---|---|
| CN1422716A (en) * | 2000-06-07 | 2003-06-11 | 三菱综合材料株式会社 | Method and apparatus for making copper and/or copper alloy ingot bar with smooth surface and without contraction cavities |
| JP2004181475A (en) * | 2002-11-29 | 2004-07-02 | Nachi Fujikoshi Corp | Magnesium alloy ingot and its manufacturing method |
| KR20110076571A (en) * | 2009-12-29 | 2011-07-06 | 주식회사 포스코 | Large ingot casting method and casting mold |
| CN202639263U (en) * | 2012-05-14 | 2013-01-02 | 王召祥 | Invisible riser for ingot casting and temperature gradient ingot casting mold |
| CN106180659A (en) * | 2016-08-30 | 2016-12-07 | 烟台万隆真空冶金股份有限公司 | A kind of strand directional solidification and the Combined water chill mould of regional choice cooling |
-
2016
- 2016-12-31 CN CN201611268089.5A patent/CN106825505B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1422716A (en) * | 2000-06-07 | 2003-06-11 | 三菱综合材料株式会社 | Method and apparatus for making copper and/or copper alloy ingot bar with smooth surface and without contraction cavities |
| JP2004181475A (en) * | 2002-11-29 | 2004-07-02 | Nachi Fujikoshi Corp | Magnesium alloy ingot and its manufacturing method |
| KR20110076571A (en) * | 2009-12-29 | 2011-07-06 | 주식회사 포스코 | Large ingot casting method and casting mold |
| CN202639263U (en) * | 2012-05-14 | 2013-01-02 | 王召祥 | Invisible riser for ingot casting and temperature gradient ingot casting mold |
| CN106180659A (en) * | 2016-08-30 | 2016-12-07 | 烟台万隆真空冶金股份有限公司 | A kind of strand directional solidification and the Combined water chill mould of regional choice cooling |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574337A (en) * | 2017-08-03 | 2018-01-12 | 上海交通大学 | A kind of Ni Al RE ternary eutectic alloys and preparation method thereof |
| CN107574337B (en) * | 2017-08-03 | 2019-07-23 | 上海交通大学 | A kind of Ni-Al-RE ternary eutectic alloy and preparation method thereof |
| US10988833B2 (en) | 2017-08-03 | 2021-04-27 | Shanghai Jiao Tong University | Ni—Al-RE ternary eutectic alloy and preparation method thereof |
| CN111203521A (en) * | 2020-01-09 | 2020-05-29 | 上海大学 | Annular ingot casting equipment and casting method thereof |
| CN112410618A (en) * | 2020-11-19 | 2021-02-26 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Preparation method of GH4698 high-temperature alloy die |
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| Publication number | Publication date |
|---|---|
| CN106825505B (en) | 2019-04-02 |
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Effective date of registration: 20190307 Address after: 276000 Middle Quanzhong Road, Linyi High-tech Zone, Shandong Province Applicant after: LINYI TIANKUO CASTING CO., LTD. Address before: 266000 2 Hui Ying Street, Jiaozhou economic and Technological Development Zone, Qingdao, Shandong Applicant before: QINGDAO R & D INSTITUTE, XI'AN JIAOTONG UNIVERSITY Applicant before: Qingdao apulse Intellectual Property Management Co. Ltd |
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