CN106282593B - A kind of technique of electron-beam cold bed furnace recycling remelting TC4 waste materials - Google Patents
A kind of technique of electron-beam cold bed furnace recycling remelting TC4 waste materials Download PDFInfo
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- CN106282593B CN106282593B CN201610835868.2A CN201610835868A CN106282593B CN 106282593 B CN106282593 B CN 106282593B CN 201610835868 A CN201610835868 A CN 201610835868A CN 106282593 B CN106282593 B CN 106282593B
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- 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
- C22B9/16—Remelting metals
- C22B9/22—Remelting metals with heating by wave energy or particle radiation
- C22B9/228—Remelting metals with heating by wave energy or particle radiation by particle radiation, e.g. electron beams
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- 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
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1218—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by dry processes
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- 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
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1295—Refining, melting, remelting, working up of titanium
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- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- 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
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Abstract
The invention discloses a kind of techniques of electron-beam cold bed furnace recycling remelting TC4 waste materials, belong to titanium alloy preparing technical field, including：Step 1：TC4 waste chemistries ingredient and weight are measured, and calculates need Al plates weight to be added；Step 2：According to the bulk density of TC4 waste materials, the size of material is estimated, and Al plates are cut as required；Step 3：Pendulum material is carried out in a manner that TC4 waste materials are superimposed with Al plates, and material is dried；Step 4：The material of drying is sent into electron-beam cold bed furnace and carries out melting, melting once obtains TC4 titanium alloys.The present invention provides a kind of reliable, practical, efficient, low cost recycling remelting TC4 waste materials processing schemes, simultaneously, flow of the present invention links up, simple operation, handles thoroughly, the demand of the TC4 waste recovery re melting process of irregular size can be solved, and suitable for the recycling re melting process of TC4 head of ingot ingot tailings.
Description
Technical field
The present invention relates to the recycling re melting process techniques that a kind of TC4 waste materials and ingot casting processing sawing TC4 expect end to end, belong to titanium
Alloy cast ingot preparing technical field.
Background technology
The Economic Development Mode that recycling of recyclable waste is constantly recycled with goods and materials is just becoming global trend at present, and walking can
The recycling of recyclable waste industry of sustainable development road becomes peoples or areas that state mainly to help.Titanium alloy scrap is as a kind of production-goods again
Mass energy is saved when developing primary ore in source to his comprehensive utilization.TC4 alloys account for the 50% of titanium alloy total amount, account for complete
The 95% of portion's titanic alloy machining part.Purposes is extremely extensive, and the recycling remelting meaning of TC4 waste materials is also unusual.
The inherent shortcoming of traditional vacuum consumable arc-melting technique, impurity can only pass through the side of a crystallizer with the end
Narrow circumferential notch discharge between wall and self-consuming furnace electrode, this gap width usually not more than 30 ~ 50mm are produced in this way
Titan alloy casting ingot there are low-density to be mingled with wait metallurgical imperfections, gross segregation is also than more serious.On the other hand, consumable electrode vacuum furnace melts
Refining needs welding electrode in advance, TC4 waste material and head of ingot ingot tailing shape irregular more demanding to the geomery of material,
The ability of vacuum consumable arc-melting recycling defective material is extremely low.
The characteristics of electron-beam cold bed furnace melting technique is maximum is to be detached fusion zone, fining cell and crystal region.It removes
High density can be eliminated better and low-density is mingled with, obtain outside fine grain homogeneous ingot casting, titanium alloy material can also be greatly lowered
Production cost, and electron-beam cold bed furnace have stronger scraps recycle ability, with electron-beam cold bed furnace recycling remelting TC4 give up
Material has powerful technical advantage.But since the main alloy element Al in TC4 waste materials is much larger than matrix element, if directly weight
Molten, Al element certainty large area volatilization losses cause final TC4 ingot chemistries can not be up to standard.So that electron beam cold
The technology of pool furnace recycling remelting TC4 waste materials is not yet seen in report.
Invention content
Present invention is primarily intended to for the above problem existing for solving to recycle remelting TC4 waste materials in the prior art, provide
It is a kind of to reduce production cost, be capable of melting once into the electron-beam cold bed furnace recycling remelting TC4 waste materials of qualified ingot casting
Technique.
The purpose of the present invention can reach by using following technical solution：
A kind of technique of electron-beam cold bed furnace recycling remelting TC4 waste materials, including following flow：The cutting of stock → Al plates →
Pendulum material → drying → enters stove melting.Its processing step includes：(1) determine the chemical composition of TC4 reclaimed materials, and weigh as required
2540kg materials, wherein TC4 waste materials 98%~99%, Al plates 1%~2%；(2) the length and width of material is limited, as required to Al plates
It is cut；(3) pendulum material is carried out in a manner that TC4 waste materials are superimposed with Al plates, and the material being well placed is dried；(4) will
Material after drying is sent into electron-beam cold bed furnace and carries out melting, and melting once obtains TC4 titan alloy casting ingots.
Further, the TC4 waste chemistry ingredients described in step 1 meet national standard GB/T3620.1-2007：It is specific
Component content is：The content that the content that the content of Al is 5.5%~6.75%, V is 3.5%~4.5%, O is containing for≤0.20%, Fe
It is≤0.015% to measure the content that the content for being≤0.05%, C for the content of≤0.30%, O is≤0.08%, H；
The purity of the Al plates is more than 99.7%, thickness 1.5mm.
Further, Al plates are cut in step 2, included the following steps：
Step 21：According to the TC4 waste from stacking density of estimation, the height for settling accounts hopper determines the length of putting of material, i.e.,
Determine the length of Al plates；
Step 22：By Al plates length in step 21, in conjunction with its total weight and thickness, the overall width of Al plates, then root are calculated
According to the width of hopper, the block number and specification of Al plates are determined；
Step 23：By Al plates number and specification requirement in step 22, Al plates are cut.
Further, pendulum material is carried out in the step 3 in a manner that TC4 waste materials are superimposed with Al plates and is dried, including such as
Lower step：
Step 31:By weighted TC4 waste materials and the Al plates cut, in a manner of superposition, put, when putting,
Ensure TC4 waste from stacking dense uniforms, the contact surface with Al plates should be smooth.
Step 32：The material being well placed is dried, 2~4h of drying time period, 115~125 DEG C of temperature.
Further, the step 4 electron-beam cold bed furnace stove melting, includes the following steps：
Step 41：The material that will be installed hangs in both sides feed space using overhead traveling crane, has closed burner hearth, extracts vacuum；
Step 42：Check the status of equipment of electron-beam cold bed furnace（Water, electricity, gas）, wait to all go well（Particularly vacuum degree and
Leak rate）, start fusion zone and fining cell electron gun, carry out baker；
Step 43：Vacuum is stablized in stove, and higher than 1.0 × 10-2 Torr, improves fusion zone and fining cell electron gun work(
Rate, while start crystal region electron gun, and adjust its power, it carries out basic skill or training processed and makees；
Step 44：It completes to start to feed after electron gun starts work, during normal smelting, improves fusion zone, fining cell and knot
Crystalline region electric current ensures that material normal melt, aluminium alloy smoothly flow into crystallizer, cold area free in cold bed crystallizer, after the completion of melting,
It closes at the first time so electron gun.
The advantageous effects of the present invention：
1st, the technique of a kind of electron-beam cold bed furnace recycling remelting TC4 waste materials provided by the invention, reasonable design, preparation process
Step is simple and easy to operate, and using effect is good.
2nd, the technique of a kind of electron-beam cold bed furnace recycling remelting TC4 waste materials provided by the invention, solves in the prior art
Consumable electrode vacuum furnace can not be welded in electrode and fusion-casting process the halfway problem that cleans to the TC4 waste materials of complex shape.
3rd, the technique of a kind of electron-beam cold bed furnace recycling remelting TC4 waste materials provided by the invention, proposes electronics for the first time
Beam cold hearth recycles the complete process of remelting TC4 waste materials, and production has been put into, and energy melting once obtains high-cleanness, high, height
Surface quality, chemical composition meet the TC4 alloy cast ingots of national standard.It solves and utilizes electron-beam cold bed furnace recycling weight in the prior art
The problem of molten TC waste material aluminium element volatilities are unable to control.
4th, the technique of a kind of electron-beam cold bed furnace recycling remelting TC4 waste materials provided by the invention, using this patent, not only may be used
To recycle remelting TC4 waste materials, the head of ingot, ingot tail and the ingredient that TC4 alloy cast ingot following process sawings are got off can also not conformed to
The TC4 ingot castings of lattice carry out secondary remelting processing, and practical significance is very great, and the economic benefit of generation is clearly.
Description of the drawings：
Fig. 1 is the curve that vacuum degree adds up fitting with each regional Electronic rifle electric current in electron-beam cold bed furnace stove of the present invention；
Fig. 2 accounts for each rifle electric current for present invention material block melting range electron gun current and adds up ratio chart；
Fig. 3 is the matched curve figure of present invention left and right sides charging rate；
Fig. 4 averagely draws ingot speed degree and speed of melting curve graph for the present invention.
Specific embodiment
A kind of technique of electron-beam cold bed furnace recycling remelting TC4 waste materials, including following flow：The cutting of stock → Al plates →
Pendulum material → drying → enters stove melting.Its processing step includes：(1) determine the chemical composition of TC4 reclaimed materials, and weigh as required
2540kg materials, wherein TC4 waste materials 98%~99%, Al plates 1%~2%；(2) the length and width of material is limited, as required to Al plates
It is cut；(3) pendulum material is carried out in a manner that TC4 waste materials are superimposed with Al plates, and the material being well placed is dried；(4) will
Material after drying is sent into electron-beam cold bed furnace and carries out melting, and melting once obtains TC4 titan alloy casting ingots.
Further, the TC4 waste chemistry ingredients described in step 1 meet national standard GB/T3620.1-2007：It is specific
Component content is：The content that the content that the content of Al is 5.5%~6.75%, V is 3.5%~4.5%, O is containing for≤0.20%, Fe
It is≤0.015% to measure the content that the content for being≤0.05%, C for the content of≤0.30%, O is≤0.08%, H；
The purity of the Al plates is more than 99.7%, thickness 1.5mm.
Further, Al plates are cut in step 2, included the following steps：
Step 21：According to the TC4 waste from stacking density of estimation, the height for settling accounts hopper determines the length of putting of material, i.e.,
Determine the length of Al plates；
Step 22：By Al plates length in step 21, in conjunction with its total weight and thickness, the overall width of Al plates, then root are calculated
According to the width of hopper, the block number and specification of Al plates are determined；
Step 23：By Al plates number and specification requirement in step 22, Al plates are cut.
Further, pendulum material is carried out in the step 3 in a manner that TC4 waste materials are superimposed with Al plates and is dried, including such as
Lower step：
Step 31:By weighted TC4 waste materials and the Al plates cut, in a manner of superposition, put, when putting,
Ensure TC4 waste from stacking dense uniforms, the contact surface with Al plates should be smooth.
Step 32：The material being well placed is dried, 2~4h of drying time period, 115~125 DEG C of temperature.
Further, the step 4 electron-beam cold bed furnace stove melting, includes the following steps：
Step 41：The material that will be installed hangs in both sides feed space using overhead traveling crane, has closed burner hearth, extracts vacuum；
Step 42：Check the status of equipment of electron-beam cold bed furnace（Water, electricity, gas）, wait to all go well（Particularly vacuum degree and
Leak rate）, start fusion zone and fining cell electron gun, carry out baker；
Step 43：Vacuum is stablized in stove, and higher than 1.0 × 10-2 Torr, improves fusion zone and fining cell electron gun work(
Rate, while start crystal region electron gun, and adjust its power, it carries out basic skill or training processed and makees；
Step 44：It completes to start pusher after electron gun starts work, during normal smelting, improves fusion zone, fining cell and knot
Crystalline region electric current ensures that material normal melt, aluminium alloy smoothly flow into crystallizer, cold area free in cold bed crystallizer, after the completion of melting,
Close all electron guns at the first time.
In conclusion this example provides a kind of method of electron-beam cold bed furnace recycling remelting TC4 waste materials, in the prior art
Consumable electrode vacuum furnace can not be welded the TC4 waste materials of complex shape electrode and the halfway problem of removal of impurities.It is and electric in the prior art
Beamlet cold hearth recycling remelting TC4 waste material aluminium element volatilities are unable to control, and obtained TC4 alloy cast ingot off analysis is asked
Topic.And remelting can be carried out to the TC4 ingot castings of the TC4 alloy cast ingots head of ingot, ingot tail and off analysis and obtain high quality, height
The TC4 alloy cast ingots of cleanliness factor, ingredient qualification.TC4 titanium alloy scraps open his comprehensive utilization ratio as a kind of regenerated resources
Hair primary ore will save mass energy.Meanwhile greatly reduce production cost.
The above, the only preferred embodiment of the invention, but protection scope of the present invention is not limited thereto, it is any ripe
Those skilled in the art are known in range disclosed in this invention, according to the technique and scheme of the present invention and its design is subject to
Equivalent substitution or change belongs to protection scope of the present invention.
Claims (3)
1. a kind of technique of electron-beam cold bed furnace recycling remelting TC4 waste materials, which is characterized in that the technique includes the following steps：
(1) it stocks up：It determines the chemical composition of TC4 reclaimed materials, and weighs material as required, wherein TC4 waste materials 98%~99%, Al
Plate 1%~2%, the thickness of the Al plates is 1.5mm；The TC4 waste materials are classified before melting according to appearance and size, ingredient symbol
National standard GB/T3620.1-2007, Al plate purity is closed more than 99.7%；
(2) cutting of Al plates：The length and width of material is limited, Al plates are cut as required, the cutting step is as follows：
Step 21：According to the TC4 waste from stacking density of estimation, the height for settling accounts hopper determines the length of putting of material, that is, determines
The length of good Al plates；
Step 22：By Al plates length in step 21, in conjunction with its total weight and thickness, the overall width of Al plates is calculated, further according to material
The width of case determines the block number and specification of Al plates；
Step 23：By Al plates number and specification requirement in step 22, Al plates are cut；
(3) pendulum material, drying：Pendulum material is carried out in a manner that TC4 waste materials are superimposed with Al plates, and the material being well placed is dried
It is dry；
(4) enter stove melting：Material after drying is sent into electron-beam cold bed furnace and carries out melting, melting once obtains TC4 titanium alloys
Ingot casting.
2. technique according to claim 1, which is characterized in that the superposition pendulum material should control TC4 waste materials and Al plates
Contact surface is smooth, TC4 waste from stacking dense uniforms, and porosity is as small as possible.
3. technique according to claim 1, which is characterized in that the drying equipment uses chamber typed drying-machine, during drying
Long 2~4h, 115~125 DEG C of temperature.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108220612B (en) * | 2018-01-19 | 2019-12-24 | 青海聚能钛业股份有限公司 | Processing method for smelting and recovering zirconium alloy by electron beam cold hearth furnace |
| CN108265182B (en) * | 2018-01-19 | 2020-04-17 | 青海聚能钛业股份有限公司 | Method for recycling smelting zirconium residues by using electron beam cold bed furnace |
| CN108239710B (en) * | 2018-04-10 | 2020-10-02 | 青海聚能钛业股份有限公司 | Method for improving uniformity of Al element in TC4 titanium alloy |
| CN111842855B (en) * | 2020-08-04 | 2021-09-10 | 西部钛业有限责任公司 | Method for preparing TA10 residual material into cast ingot by using duplex process |
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| US3933473A (en) * | 1973-10-19 | 1976-01-20 | Airco, Inc. | Method for recovering a usable alloy from titanium scrap |
| CN101413061A (en) * | 2008-12-05 | 2009-04-22 | 西北有色金属研究院 | Electron beam cold hearth melting recovery method for titanium and titanium alloy chip scrap |
| CN102912186A (en) * | 2012-10-22 | 2013-02-06 | 西北有色金属研究院 | Method for preparing TC4 titanium alloy ingot casting through electron beam cold bed hearth smelting |
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