CN104550893A - Filtering device for increasing purity of nickel-based superalloy powder - Google Patents
Filtering device for increasing purity of nickel-based superalloy powder Download PDFInfo
- Publication number
- CN104550893A CN104550893A CN201410778118.7A CN201410778118A CN104550893A CN 104550893 A CN104550893 A CN 104550893A CN 201410778118 A CN201410778118 A CN 201410778118A CN 104550893 A CN104550893 A CN 104550893A
- Authority
- CN
- China
- Prior art keywords
- filter
- semicircle
- superalloy
- powder
- ceramic
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/007—Treatment of the fused masses in the supply runners
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention relates to a filtering device for increasing the purity of nickel-based superalloy powder. By arranging a fixed combined filter in a casting tundish, the filtering device achieves the objective of purifying superalloy melt and stabilizing melt flow, consequently, various nonmetallic impurities in the superalloy powder are effectively reduced, the purity of powdery superalloy disks is improved, the safety reliability of powdery superalloy turbine disks and other hot end parts of engines are enhanced, and the service lives of the powdery superalloy turbine disks and the other hot end parts of the engines are prolonged.
Description
Technical field
The present invention is a kind of filter improving Ni-base Superalloy Powder degree of purity, belongs to powder metallurgical technology.
Background technology
The turbine disk is that first of the large critical component of aero-engine three, its performance directly determines the overall performance of engine.Along with the progress of science and technology, thrust-weight ratio, the power to weight ratio of Aeronautics and Astronautics turbogenerator and ground gas turbine are more and more higher, and turbine disk lip temperature is very high, simultaneously engine calls low cost, long-life, high security.This just forces the preparation of the key components and parts such as the turbine disk must adopt new material, new technology, new design concept.The raising of early deformation high-temperature structural material intensity is mainly reached by alloying.But along with the raising of serviceability temperature and alloy strength, its alloying level is also more and more higher, so that the segregation of ingot casting is serious, thermal process plasticity worsens, conventional cast forging process is made to manufacture the turbine disk very difficult.And powder metallurgy blank has the rapid solidification structure features such as even tissue, crystal grain are tiny, its thermal process plasticity is obviously improved simultaneously.In recent decades, the development and apply of powder metallurgy superalloy turbine disc is rapidly developed, so that powder metallurgy superalloy has become the preferred material of the high-performance enginer turbine disk of current thrust-weight ratio more than 8.
In the important load-carrying construction part military service of engine, failure analysis shows, powder metallurgy superalloy degree of purity not only has influence on the serviceability of parts, and directly affects the reliability of these critical components.The degree of purity of powder metallurgy superalloy is the major control factors of turbine disk safe life, affects and determines the safe life of engine, become gradually powder metallurgy superalloy produce, use in a crucial key factor.Thus it is very important for adopting certain approach to eliminate or reducing the content of non-metallic inclusion and size for the safe handling of high stress level lower member.
Non-metallic inclusion in powder metallurgy superalloy mostly is the ceramic inclusions of fragility, and main component is Al, Si, Ca, Mg, O etc., and they are mainly derived from foundry alloy melting and pulverizing process.Although take many kinds of measures in current foundry alloy preparation process, as improved vacuum induction melting (VIM) condition, foundry alloy degree of purity is greatly improved, field trash exceeds standard and still annoyings the research and production of powder metallurgy superalloy turbine disc.Current powder by atomization stove, the remelting of high temperature alloy generally adopts aluminium oxide or zirconic single foamed filter sheet to carry out liquation purification, and is by unfixing for the filter bottom being directly placed on casting tundish, is not fixed.This kind of filtering technique has following drawback: 1) foamed filter sheet material is very crisp, and especially slag is fallen in the easy fragmentation in filter edge, directly enters into powder, introduces new field trash; 2) filter is not fixed in tundish, and during liquid castable, because its density is far below high temperature alloy, so easily swim on liquid level, current stabilization and catharsis obviously weaken.
Because the process detail of argon gas atomization superalloy powder technology of preparing is seldom seen in foreign literature report.At home, institute of industry Beijing Research Inst. of Aeronautic Material of Air China is uniquely engaged in powder metallurgy superalloy turbine disc argon gas to be atomized the research and production unit of superalloy powder, and a lot of ins and outs in this technology also need further perfect.
Summary of the invention
The present invention designs for above-mentioned the deficiencies in the prior art just and provides a kind of filter improving Ni-base Superalloy Powder degree of purity, its objective is casting tundish in fixing combined filter is set, reach the object such as cleaning high-temp alloy molten solution, stabilizing solution stream, various non-metallic inclusions in effective minimizing superalloy powder, improve the degree of purity of powder metallurgy superalloy diskware, improve security reliability and the service life of the engine thermal end pieces such as powder metallurgy superalloy turbine disc.
The object of the invention is to be achieved through the following technical solutions:
This kind improves the filter of Ni-base Superalloy Powder degree of purity, it is characterized in that: this filter is by floamed ceramics filtrating piece (1), straight-bore ceramic filter (2) and two semicircle ceramic jacket box (3) composition, two semicircle ceramic jacket box (3) is docked by two annular semicircle assemblies to form, the inwall of two semicircle ceramic jacket box (3) forms annular groove (4), on floamed ceramics filtrating piece (1) and straight-bore ceramic filter (2), under be superimposed after be installed in the middle of two semicircle ceramic jacket box (3) annular groove (4) in, the outer wall of two semicircle ceramic jacket box (3) is fixed in casting tundish (5) inner chamber, be positioned at the middle of cavity heights,
The floamed ceramics filtrating piece (1) of round sheet is made up of zirconia material, and thickness is 20mm ~ 30mm;
The straight-bore ceramic filter (2) of round sheet is made up of alumina material, and thickness is 5mm ~ 15mm;
Two semicircle ceramic jacket box (3) is made up of alumina material, and in this alumina material, the percentage by weight of aluminium oxide is 92% ~ 99% aluminium oxide.
The specification of floamed ceramics filtrating piece (1) and straight-bore ceramic filter (2) is 10PPI ~ 15PPI.
Technical solution of the present invention adopts combination filter, and upper strata adopts floamed ceramics filtrating piece, by the filter cake mechanism to high temperature alloy liquation, skin effect, rectifying effect three kinds of strobe utilities, and the non-metallic inclusion in effective filtering high temperature alloy molten solution; The straight-bore ceramic filter of lower floor is pressure forming, intensity is apparently higher than floamed ceramics filtrating piece, the shape of adding itself is more regular, therefore can not produce fragmentation and fall slag problem, and can filtering high temperature alloy molten solution further, prevent the floamed ceramics filtrating piece fragmentation on upper strata from falling slag and entering in powder.More importantly, the uniqueness of straight-bore ceramic filter extrudes microcosmic ceramic honey comb straight hole, has special " rectification " effect, solution is become stable " laminar flow " from " turbulent flow ", can prevent bubble from entering, avoid making because of turbulent flow burning and to be splashed the harmful effect caused by solution; Two filters are fixed in the casting tundish of powder by atomization stove by two semicircle ceramic jacket box, be conducive to high temperature alloy liquation current stabilization and purification.
The invention has the beneficial effects as follows: the advantage combining floamed ceramics filtrating piece and straight-bore ceramic filter, there is good filtration effect, do not fall the advantages such as slag, achieve purification and the turbulent flow of high temperature alloy liquation.Prepared superalloy powder has higher degree of purity, the per kilogram powder non-metallic inclusion content of particle diameter below 60 μm reaches less than 20, meets the technical requirement of aero-engine powder metallurgy superalloy turbine disc to superalloy powder degree of purity.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention
Detailed description of the invention
Below with reference to drawings and Examples, technical solution of the present invention is further described:
Shown in accompanying drawing 1, the filter that this kind improves Ni-base Superalloy Powder degree of purity is by floamed ceramics filtrating piece 1, straight-bore ceramic filter 2 and two semicircle ceramic jacket box 3 form, two semicircle ceramic jacket box 3 is docked by two annular semicircle assemblies to form, the inwall of two semicircle ceramic jacket box 3 forms annular groove 4, on floamed ceramics filtrating piece 1 and straight-bore ceramic filter 2, under be superimposed after be installed in the middle of two semicircle ceramic jacket box 3 annular groove 4 in, the outer wall corundum coatings of two semicircle ceramic jacket box 3 is fixed in casting tundish 5 inner chamber, dry with electrical heating blowing, two semicircle ceramic jacket boxes 3 are positioned at the middle of cavity heights,
The floamed ceramics filtrating piece 1 of round sheet is made up of zirconia material, and thickness is 20mm ~ 30mm;
The straight-bore ceramic filter 2 of round sheet is made up of alumina material, and thickness is 5mm ~ 15mm;
Two semicircle ceramic jacket box 3 is made up of alumina material, and in this alumina material, the percentage by weight of aluminium oxide is 92% ~ 99% aluminium oxide.
The specification of floamed ceramics filtrating piece 1 and straight-bore ceramic filter 2 is 10PPI ~ 15PPI.
The process adopting apparatus of the present invention to prepare Ni-base Superalloy Powder is:
Process one, its step is as follows:
1) this filter adopts the combination filter that 30mm thick 15PPI Zirconium oxide foamed ceramic filter 1,15mm thick 15PPI aluminium oxide straight hole filter 2 and 99% aluminium oxide two semicircle cover box 3 form;
2) before the cast of high temperature alloy liquation, casting tundish 5 and combination filter are preheated to 1500 DEG C and are incubated;
3) high temperature alloy liquation reaches more than 1600 DEG C, is poured in casting tundish 5, after combination filter, carries out powder by atomization.
Adopt this combination filter to carry out powder by atomization, obtain purer Ni-base Superalloy Powder, analyze through water elutriation method, in the per kilogram Ni-base Superalloy Powder of particle diameter below 60 μm, non-metallic inclusion content is 10.
Process two, its step is as follows:
1) this filter adopts the combination filter that 25mm thick 15PPI Zirconium oxide foamed ceramic filter 1,5mm thick 15PPI aluminium oxide straight hole filter 2 and 95% aluminium oxide two semicircle cover box 3 form;
2) before the cast of high temperature alloy liquation, casting tundish 5 and combination filter are preheated to 1200 DEG C and are incubated;
3) high temperature alloy liquation reaches more than 1600 DEG C, is poured in casting tundish 5, after combination filter, carries out powder by atomization.
Adopt this combination filtering technique to carry out powder by atomization, obtain purer Ni-base Superalloy Powder.Analyze through water elutriation method, in the per kilogram Ni-base Superalloy Powder of particle diameter below 60 μm, non-metallic inclusion content is 15.
Process three, its step is as follows:
1) this filter adopts the combination filter that 20mm thick 10PPI Zirconium oxide foamed ceramic filter 1,10mm thick 10PPI aluminium oxide straight hole filter 2 and 92% aluminium oxide two semicircle cover box 3 form;
2) before the cast of high temperature alloy liquation, casting tundish 5 and combination filter are preheated to 1300 DEG C and are incubated;
3) high temperature alloy liquation reaches more than 1600 DEG C, is poured in casting tundish 5, after combination filter, carries out powder by atomization.
Adopt this combination filtering technique to carry out powder by atomization, obtain purer Ni-base Superalloy Powder.Analyze through water elutriation method, in the per kilogram Ni-base Superalloy Powder of particle diameter below 60 μm, non-metallic inclusion content is 20.
Compared with prior art, filtering device designs of the present invention is simple, filter effect obvious, significantly can reduce the quantity of non-metallic inclusion in superalloy powder.
Claims (2)
1. one kind is improved the filter of Ni-base Superalloy Powder degree of purity, it is characterized in that: this filter is by floamed ceramics filtrating piece (1), straight-bore ceramic filter (2) and two semicircle ceramic jacket box (3) composition, two semicircle ceramic jacket box (3) is docked by two annular semicircle assemblies to form, the inwall of two semicircle ceramic jacket box (3) forms annular groove (4), on floamed ceramics filtrating piece (1) and straight-bore ceramic filter (2), under be superimposed after be installed in the middle of two semicircle ceramic jacket box (3) annular groove (4) in, the outer wall of two semicircle ceramic jacket box (3) is fixed in casting tundish (5) inner chamber, be positioned at the middle of cavity heights,
The floamed ceramics filtrating piece (1) of round sheet is made up of zirconia material, and thickness is 20mm ~ 30mm;
The straight-bore ceramic filter (2) of round sheet is made up of alumina material, and thickness is 5mm ~ 15mm;
Two semicircle ceramic jacket box (3) is made up of alumina material, and in this alumina material, the percentage by weight of aluminium oxide is 92% ~ 99% aluminium oxide.
2. the filter of raising Ni-base Superalloy Powder degree of purity according to claim 1, is characterized in that: the specification of floamed ceramics filtrating piece (1) and straight-bore ceramic filter (2) is 10PPI ~ 15PPI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778118.7A CN104550893A (en) | 2014-12-15 | 2014-12-15 | Filtering device for increasing purity of nickel-based superalloy powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778118.7A CN104550893A (en) | 2014-12-15 | 2014-12-15 | Filtering device for increasing purity of nickel-based superalloy powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104550893A true CN104550893A (en) | 2015-04-29 |
Family
ID=53068552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410778118.7A Pending CN104550893A (en) | 2014-12-15 | 2014-12-15 | Filtering device for increasing purity of nickel-based superalloy powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104550893A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985171A (en) * | 2015-08-03 | 2015-10-21 | 武汉科技大学 | Molten steel field trash capture device for continuous casting tundish retaining wall |
| CN106435207A (en) * | 2016-11-18 | 2017-02-22 | 西南铝业（集团）有限责任公司 | CFF filter plate compression device and pretreatment method |
| CN107498001A (en) * | 2017-09-08 | 2017-12-22 | 大连理工大学 | The pouring cup device with electromagnetism purified treatment for magnesium iron mold continuous production |
| CN107916336A (en) * | 2017-12-14 | 2018-04-17 | 宁夏太阳镁业有限公司 | A kind of magnesium alloy refining copple |
| CN109759577A (en) * | 2019-01-29 | 2019-05-17 | 大连交通大学 | The method of intensified by ultrasonic wave metal melt filtering purification |
| CN110180995A (en) * | 2019-05-29 | 2019-08-30 | 共享装备股份有限公司 | A kind of net filter used for casting and running gate system |
| CN113560515A (en) * | 2021-06-21 | 2021-10-29 | 杭州电子科技大学 | Tundish for rare earth magnetic material rapid-hardening casting belt and casting method |
| CN113976829A (en) * | 2021-07-29 | 2022-01-28 | 江苏奇纳新材料科技有限公司 | Casting system and casting method for vacuum induction melting of high-temperature alloy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000061617A (en) * | 1998-08-27 | 2000-02-29 | Aisin Takaoka Ltd | Stopper structure |
| CN2889442Y (en) * | 2006-01-12 | 2007-04-18 | 绵阳西磁科技开发公司 | Filtering device for alloy solution |
| CN101440432A (en) * | 2007-11-21 | 2009-05-27 | 中国科学院金属研究所 | Filter for purifying smelting molten steel |
| CN202237451U (en) * | 2011-09-07 | 2012-05-30 | 浙江兰歌化学工业有限公司 | Polyether resin fine filter |
| CN202509121U (en) * | 2012-02-01 | 2012-10-31 | 湖南中精伦金属材料有限公司 | Compound filter used for casting copper-based alloy |
-
2014
- 2014-12-15 CN CN201410778118.7A patent/CN104550893A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000061617A (en) * | 1998-08-27 | 2000-02-29 | Aisin Takaoka Ltd | Stopper structure |
| CN2889442Y (en) * | 2006-01-12 | 2007-04-18 | 绵阳西磁科技开发公司 | Filtering device for alloy solution |
| CN101440432A (en) * | 2007-11-21 | 2009-05-27 | 中国科学院金属研究所 | Filter for purifying smelting molten steel |
| CN202237451U (en) * | 2011-09-07 | 2012-05-30 | 浙江兰歌化学工业有限公司 | Polyether resin fine filter |
| CN202509121U (en) * | 2012-02-01 | 2012-10-31 | 湖南中精伦金属材料有限公司 | Compound filter used for casting copper-based alloy |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985171A (en) * | 2015-08-03 | 2015-10-21 | 武汉科技大学 | Molten steel field trash capture device for continuous casting tundish retaining wall |
| CN106435207A (en) * | 2016-11-18 | 2017-02-22 | 西南铝业（集团）有限责任公司 | CFF filter plate compression device and pretreatment method |
| CN107498001A (en) * | 2017-09-08 | 2017-12-22 | 大连理工大学 | The pouring cup device with electromagnetism purified treatment for magnesium iron mold continuous production |
| CN107498001B (en) * | 2017-09-08 | 2023-08-11 | 大连理工大学 | Pouring cup device with electromagnetic purification treatment for continuous production of ductile iron casting mold |
| CN107916336A (en) * | 2017-12-14 | 2018-04-17 | 宁夏太阳镁业有限公司 | A kind of magnesium alloy refining copple |
| CN109759577A (en) * | 2019-01-29 | 2019-05-17 | 大连交通大学 | The method of intensified by ultrasonic wave metal melt filtering purification |
| CN110180995A (en) * | 2019-05-29 | 2019-08-30 | 共享装备股份有限公司 | A kind of net filter used for casting and running gate system |
| CN113560515A (en) * | 2021-06-21 | 2021-10-29 | 杭州电子科技大学 | Tundish for rare earth magnetic material rapid-hardening casting belt and casting method |
| CN113560515B (en) * | 2021-06-21 | 2023-01-03 | 杭州电子科技大学 | Tundish for rare earth magnetic material rapid-hardening casting belt and casting method |
| CN113976829A (en) * | 2021-07-29 | 2022-01-28 | 江苏奇纳新材料科技有限公司 | Casting system and casting method for vacuum induction melting of high-temperature alloy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104550893A (en) | Filtering device for increasing purity of nickel-based superalloy powder | |
| CN108546834B (en) | Purification smelting method for nickel-based high-temperature alloy master alloy | |
| CN206605009U (en) | Annular cast running gate system | |
| CN104388714B (en) | A kind of smelting preparation method of large scale Intermatallic Ti-Al compound ingot casting | |
| CN201969858U (en) | Multifunctional vacuum centrifugal oscillation fine grain melting and casting furnace | |
| CN101758178B (en) | Centrifugal casting method for titanium alloy frame casting | |
| CN107457408A (en) | The sensing atomization of continous way cold crucible prepares titanium valve equipment | |
| CN104745854A (en) | Vacuum-air pressure casting method of three-dimensional network ceramic-metal friction composite material | |
| CN208178424U (en) | The induction atomization of continous way cold crucible prepares titanium valve equipment | |
| CN106334800B (en) | The sensing atomization of cold crucible bottom filling prepares titanium valve equipment | |
| GB2470650A (en) | Face coating slurry comprising yttria | |
| CN109022962A (en) | A kind of aviation alloyed aluminium rectangle ingot and its manufacturing method | |
| CN112066725A (en) | Novel structure crucible for high-temperature alloy smelting and vacuum induction smelting process thereof | |
| CN101486086B (en) | Flat die casting method for silver bullion | |
| CN110387478A (en) | A kind of semi-continuous casting method of Al-Si alloy ingots | |
| CN105886795B (en) | A kind of conbustion synthesis coupling manufacturing of high field received device of refractory metal material | |
| CN106238716B (en) | Aluminium alloy stratiform cloth plane of flow solidified cast device and its casting method | |
| CN201913235U (en) | Steel ladle cover adding and removing device | |
| CN114309550A (en) | Device and method for casting integral fine grains based on local area temperature adjustable system | |
| CN202148342U (en) | Aluminum alloy melting and purifying device | |
| CN205851817U (en) | A kind of noble metal metallurgy cooling water-cooled shaping mould | |
| CN203498452U (en) | Aluminum melt purification system | |
| CN104567434A (en) | Gravity aluminum melting furnace and aluminum melting method | |
| CN215832457U (en) | Intermediate frequency furnace for grinding ball casting | |
| CN205710864U (en) | A kind of magnesium alloy smelting Casting Equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |