CN106191482A - The Intermatallic Ti-Al compound of high-cleanness, high and the induction fusion casting method of high-purity titanium alloy - Google Patents
The Intermatallic Ti-Al compound of high-cleanness, high and the induction fusion casting method of high-purity titanium alloy Download PDFInfo
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- CN106191482A CN106191482A CN201610655646.2A CN201610655646A CN106191482A CN 106191482 A CN106191482 A CN 106191482A CN 201610655646 A CN201610655646 A CN 201610655646A CN 106191482 A CN106191482 A CN 106191482A
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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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C16/00—Alloys based on zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
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- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Details (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
The invention discloses the Intermatallic Ti-Al compound of a kind of high-cleanness, high, the induction fusion casting method of high-purity titanium alloy (or high temperature active metal), use the induction suspending melting technique without crucible or half high crucible auxiliary constraint molten metal and end leaky casting mode, solve the efficiency problem on the low side that alloy cleanliness reduces and cold-crucible causes that non-cold-crucible causes.It is capable of the energy-conservation melting casting of high-cleanness, high and high-purity temperature active metal (titanium, zirconium, hafnium and alloy thereof or intermetallic compound).
Description
Technical field
The invention belongs to smelting non-ferrous metal casting field, particularly belong to Intermatallic Ti-Al compound and titanium or titanium alloy sense
Answer melting casting technique field.
Background technology
Titanium or titanium alloy has good corrosion resistance, low-density (4.3 to 4.6g/cm3), high specific strength, can be 500
Long-term work below DEG C, is widely used in all many-sides such as Aero-Space, chemical industry, medical treatment；Intermatallic Ti-Al compound density is about
3.76 to 5.8g/cm3, can the most resistance to 600 to 900 DEG C of high temperature, and keep higher intensity, be to make some aerospace structure
Part and Surface power drive system rotate or the elite clone of reciprocating structure part, it is possible to realize thrust-weight ratio and fuel oil effect
Increasing substantially of rate, can be widely applied to internal combustion engine turbocharger turbine and industrial gas turbine engine bucket aspect.Through the world
Various countries' research in nearly 70 years, is cast into the most economical manufacturing process of titanium or titanium alloy, Intermatallic Ti-Al compound complex structural member.
Owing to such alloy or intermetallic compound titaniferous amount are high, its high-temperature fusant activity is big, and Melting control difficulty is big.At present, have three
Plant main method of smelting, one, vacuum arc skull melting；Its two, high energy beam (plasma or electronics) cold hearth melting；Its three,
Sensing Cold Crucible Melting.In above method, for preventing active metal titanium from reacting with melting container, all have employed the copper of logical cooling water
Container (cold crucible or cold bed), and carry out smelting operation in vacuum or noble gas space.
Patent CN 104646647A describes leaky vacuum at the bottom of a kind of titanium-base alloy induction melting using ceramic crucible
Inhaling casting machine and control method thereof, CN1699907A describes the crucible lining of a kind of titanium or titanium alloy melting, patent
CN1699906A describes a kind of titanium or titanium alloy melting composite crucible, and patent CN1583670A describes a kind of titanium and titanium closes
Gold melting kettle material, but these patents the most all cannot avoid the problem that interstitial element (O, N etc.) increases.Above method
The ceramic crucible that oxide used, nitride or a combination thereof manufacture, general raw material is high inert yittrium oxide, zirconium oxide, oxidation
Calcium, boron nitride etc., it is impossible to avoid active titanium melt to react with crucible composition material, cause interstitial element content to increase, water
Cast alloy degraded toughness, causes such method to cannot be carried out high tenacity Intermatallic Ti-Al compound or the melting of high-purity titanium alloy
Casting.
Cold crucible suspends or cold hearth melting is to meet low gap element, high tenacity Intermatallic Ti-Al compound or high-purity titanium
The effective ways of alloy, but there is energy consumption height in such method, and device security requires the problems such as high.Some patents are abroad had to do
Reducing the trial of copper water-cooled vessel, as U.S. Patent 5033948 describes without crucible induction melting, but the method exists
Sensing heating and melting Quench base, causes alloying component deviation out of control and the problem of device damage.U.S. Patent 5033948
The induction melting without crucible introduced, induction coil, outside body of heater, causes efficiency to reduce, and requires that body of heater must use sensing magnetic
The permeable material manufacture in field, puts into practice difficulty big.U.S. the magnetic suspension melting process device that Patent 5275229 introduces uses
The axis of screw the most looped two coil configuration, and devise rotating mechanism at the bottom of the crucible of complexity, processing request is high,
Manufacture difficulty is big.
At present, high-cleanness, high Intermatallic Ti-Al compound or the efficient method of smelting of high-purity titanium alloy are lacked.The present invention
The problem of the existence that Intermatallic Ti-Al compound and titanium alloy high-cleanness, high melt, high energy efficiency melting are cast is solved.
Summary of the invention
The present invention devises a kind of novel high temperature ripple Metal Melting casting method alive, with Intermatallic Ti-Al compound and titanium
As a example by alloy, but its scope of application is not limited to titanium, titanium alloy, Intermatallic Ti-Al compound, the most incessantly comprises zirconium, zircaloy, hafnium
And alloy etc..The melting casting of the type alloy low gap element requirement can be met.
The technical scheme of the inventive method is as follows: use working chamber and the separate structure in casting mold room and leaky casting side, the end
Formula, carries out the melting casting of high temperature active metal.The built-in removable induction coil in working chamber, chooses suitable frequency, from upper and
Lower thawing ingot；By band crucible (or short crucible) or the vacuum induction melting device without crucible, support ring isolation gold is set
Belong to and crucible (or short crucible) bottom or support the contacting of base (during without crucible), prevent crucible material pollution metal and reduce nothing
Benefit the heat transfer of metal melt to improve system energy efficiency.
Body of heater forms vacuum system with vacuum pump group, and pressure in the burner hearth can be controlled at 0.1Pa to 10Pa by vacuum system
Between.Induction power supply introduces working chamber by water-cooled cable, after entering working chamber, by flexible cable with working chamber's inwall even
Connect, and can be lower mobile in vertical direction, this moves and can manually or automatically control to carry out.The internal all cables in working chamber are all taked
High-temperature insulation measure, prevents producing electric arc under splatter and vacuum environment between electrified metal and causes damage.Working chamber can
To be filled with the noble gas of suitable pressure, to reduce the loss of easy scaling loss element in smelting metal, safeguard that alloying element is the most steady
Fixed.Working chamber's noble gas stowing pressure can manually or automatically control and be able to maintain that at set point.Have bottom casting mold room
Having centrifugal pan, can be centrifuged casting, centrifugal rotation rotating speed is adjustable, direction is adjustable.Leak at the bottom of working chamber centre bore and casting mold room from
Cartridge center is on same vertical line, facilitates spun casting.Fig. 1 is shown in by protocol population structure chart.
One of solution details: induction coil selects suitable diameter and height, is used for watering with the alloy of the suitable weight of melting
Casting.
The two of solution details: induction coil can move up and down, displacement contains whole metal column height, and mobile device is
L-type cantilever design, mobile device driving force passes through silk from manual, hydraulic pressure, pneumatically or electrically power driving i.e. servo or motor
Thick stick feed rod band moving winding moves.
The three of solution details: metal shading ring uses with melted alloy material with material or approximation material manufacture, but form is also
It is not limited to independent looped structure；It is included in metal bar material bottom and punches that formation pit one isolation structure etc. is like this to be risen
Structure to the effect of isolation.This detailed explanation figure is shown in Fig. 2.
The four of solution details: arrange slide valve between working chamber and casting mold room, carry out chamber separation.
The five of solution details: end leaky bearing or crucible structure, can use A, support base, band water-cooled or without water-cooled
's；B, supports base, band water-cooled or without water-cooled, has additional ring protection structure；C, short crucible；D, full crucible；More than E
Two kinds of A, B, C, D or above combine in whole or in part, support seat band water-cooled or can be respectively combined without water-cooled.This is entered by Fig. 3
Go limited enumerating.
Accompanying drawing explanation
Accompanying drawing as part of the specification, jointly provides explanation of the invention, absolutely not to this with detailed description of the invention
The implication that invention scope limits or reduces.The present invention has three figures and explains its explanation, facilitates correct understanding, respectively: figure
1, overall structure figure；Fig. 2, metal isolation supporting ring structure figure；Fig. 3, supports base and crucible structure.
The title at each position of Fig. 1 overall structure figure is respectively: 101, working chamber；102, water-cooled induction cable interface；103、
Flexible water-cooling anti-splashing cable；104, water-cooled body of heater；105, ingot；106, metal isolation support ring or similar structures；107、
End small opening；108, casting mold carrying centrifugation systems；109, casting mold；110, casting mold carrying filler；111, casting mold room；112, slide valve；
113, base or crucible are supported；114, induction coil support；115, induction coil；116, induction coil travel mechanism；117, mistake
Filter screen；118, vacuum system flange；119, sight glass；120, induction coil is dynamic drives facility.
Fig. 2 metal isolation support ring or similar structures figure each figure title respectively: 21, big footpath isolation support ring；22, isometrical
Isolation support ring；23, equivalence isolation supporting construction (flat)；24, equivalence isolation supporting construction (at the bottom of cone)；25, equivalence isolation
Support structure (at the bottom of curved surface).Wherein, 201, ingot；202, isolation support ring；203, the ingot of band isolation supporting construction.
Fig. 3 supports base and crucible structure each figure title respectively: 31, water-cooled supports seat；32, non-water-cooled supports seat；33、
Cooling protection ring；34, non-cooled protective ring；35, half high crucible；36 overall height crucibles.Wherein, 301, ingot；302, isolation
Pushing out ring or similar structures；303, cooling water；304, end small opening.
With the combination in any of the arbitrary portion of Fig. 2, Fig. 3 based on Fig. 1, all within covering scope of the present invention.
Detailed description of the invention
Detailed description of the invention example is that the citing to the present invention illustrates, unrestricted or reduce the implication of invention scope.
Detailed description of the invention one: with the overall structure of Fig. 1, the 21 of Fig. 2 big footpath isolation supporting ring structure, 31 water-cooleds of Fig. 3
Clamping support, vacuum system size lobe pump and screw pump, it is equipped with the induction power supply of 10 to 20KW, it is achieved 1Kg TA2 is pure
Titanium alloy ingot melts casting, and 1Kg TC4 titanium alloy smelting is cast, and about 0.7Kg Ti-48Al-2Cr-2Nb intermetallic compound
Melting is cast.In above melting, shove charge alloy pig size, between Φ 40 to 120mm, length 50 to 200mm, is cast after melting casting
Part composition is uniform, and wherein TA2, TC4 alloy interstitial element increment is less than electric arc melting mode.
Detailed description of the invention two: with the overall structure of Fig. 1,23 equivalences isolation supporting construction (flat) of Fig. 2, the 32 of Fig. 3
Non-water-cooled supports seat and 35 half high crucibles, and vacuum system uses vacuum packet connection melting working chamber (101) and casting mold room (111),
It is equipped with 20 to 40Kw induction power supply, it is achieved 1.7Kg TC4 titanium alloy smelting is cast, about 1.3Kg Ti-48Al-2Cr-2Nb metal
Between compound melting casting.Its shove charge ingot size (contains between 120 to 260mm between Φ 55 to 150mm, length
Effect supporting construction part).
Claims (4)
1. a high-cleanness, high Intermatallic Ti-Al compound or high-purity titanium alloy melting method；It is characterized in that: the first, use
Built-in removable induction coil, ingot is melted in sensing；The second, treat that there is below smelting metal ingot support shading ring structure；The
Three, there is the structure of working chamber and the isolation of shell room and use end leaky casting mode；4th, shell room has heater,
5th, the combination in any of preceding feature.
2. the method for smelting described in claim 1, its molten alloy kind is including but not limited to Intermatallic Ti-Al compound or titanium
Under aluminium alloy, titanium or titanium alloy, zirconium and zircaloy, hafnium and alloy thereof and other condition of high temperature, there is highly active metal.
3. the method for smelting described in claim 1, treats that smelting metal uses of the same race or close material with supporting shading ring below；
But form is not limited to independent looped structure；Be included in metal bar material bottom punch formed pit integral support shading ring knot
Like this playing such as structure supports and the structure of buffer action.
4. the method for smelting described in claim 1, its end leaky bearing, for A, support base, band water-cooled or without water-cooled；B,
Support base, band water-cooled or without water-cooled, and there is additional annular metal or pottery protection structure；C, half high crucible；D, entirely
High crucible；Two kinds of more than E A, B, C, D or combination of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610655646.2A CN106191482B (en) | 2016-08-12 | 2016-08-12 | Induction fusion casting method of high-purity titanium-aluminum intermetallic compound and high-purity titanium alloy |
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|---|---|---|---|
| CN201610655646.2A CN106191482B (en) | 2016-08-12 | 2016-08-12 | Induction fusion casting method of high-purity titanium-aluminum intermetallic compound and high-purity titanium alloy |
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| CN106191482A true CN106191482A (en) | 2016-12-07 |
| CN106191482B CN106191482B (en) | 2021-08-24 |
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