CN105154716A - Preparation method and preparation device of titanium-aluminum alloy - Google Patents
Preparation method and preparation device of titanium-aluminum alloy Download PDFInfo
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- CN105154716A CN105154716A CN201510633946.6A CN201510633946A CN105154716A CN 105154716 A CN105154716 A CN 105154716A CN 201510633946 A CN201510633946 A CN 201510633946A CN 105154716 A CN105154716 A CN 105154716A
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Abstract
The invention discloses a preparation method and preparation device of a titanium-aluminum alloy, and belongs to the field of preparation of the titanium-aluminum alloy by an aluminothermic reduction method. The invention provides a preparation method and a corresponding preparation device of the titanium-aluminum alloy, which can improve the residue-metal separation effect and the quality of the titanium-aluminum alloy; the titanium-aluminum alloy is prepared through an aluminothermic reduction reaction under a super-gravity system environment, so that the residue-metal separation effect can be improved. The preparation device comprises a reaction tank and a super-gravity generating system, wherein the super-gravity generating system comprises a support frame, a central rotating shaft, a rotating cross arm and a driving mechanism, the reaction tank is in hanging connection to the free end part, which is away from the central rotating shaft, of the rotating cross arm, through a steel rope. The reaction tank is driven by the driving mechanism to rotate around the axis of the central rotating shaft, so that performing an aluminothermic reaction in the reaction tank under the super-gravity field environment is realized. The preparation device disclosed by the invention is simple in structure, and super-gravity coefficients can convenient to regulate as needed.
Description
Technical field
The present invention relates to the technical field that thermit reduction prepares titanium aluminum alloy, particularly relate to a kind of titanium aluminum alloy preparation method and corresponding preparation facilities.
Background technology
Titanium has the advantages such as high and good high temperature resistant, the erosion resistance of lightweight, specific tenacity, is described as " space metal ", " following metal " and " the 3rd metal ".The mechanical property of pure titanium and processibility good, but containing O, C, N time can reduce its plasticity.Form various alloy because liquid metal titanium almost can dissolve all metals, titanium aluminum alloy is subject to the extensive concern of Chinese scholars.Thermit reduction, as method a kind of in self-propagating high-temperature method, is widely used in the preparation of alloy.As Ti-Fe alloy, Ti-Al alloy etc.Thermit reduction reaction is violent, when preparing Ti-Fe alloy and Ti-Al alloy, then a large amount of splash can be produced when heat is too much in reaction process, the person and device security are constituted a threat to, and temperature too high on thermodynamics is also unfavorable for the reduction of titanium, also the waste that titanium material is large can be caused; Though the carrying out of reaction can be maintained when but if heat is less and decrease splash, but slag viscosity can be caused to increase, mobility reduces, thus cause slag-Jin and can not be separated very well, especially when preparing Ti-Al alloy, due to alloy and slag density difference less, gold-slag inferior separating effect, carry Ti-Al alloy in slag secretly, cause the waste of titanium, titanium recovery rate reduces.
At present, the Reaktionsofen that application thermit reduction prepares titanium aluminum alloy is generally static placement, by reaction liberated heat, reaction is carried out in self-propagating mode, do not have artificial interference in process after thermite reaction triggers.After question response terminates naturally cooling, then take out alloy and slag.It is not thorough that titanium aluminum alloy prepared by this method is separated with slag, there is a large amount of non-metallic inclusions, greatly reduce the rate of recovery of titanium, so also need to carry out secondary smelting separation and refining in metal.Secondary smelting be separated and refining in order to reduce the oxygen level in metal, in reaction process, pass into argon gas, to play certain provide protection.But argon gas is expensive, production cost is increased.
The slag of rear melting is terminated and alloy obtains good separation in order to enable reaction, also application electro-aluminothermic process is had to prepare Ti-Al alloy, make reaction terminate rear slag and alloy maintenance certain temperature, can not decline because of temperature and make the increase of slag viscosity, mobility decline, thus slag-Jin is separated smoothly.But, because thermit reduction reaction is violent, extend soaking time and then add the probability that the impurity such as O, C, N invade alloy.
Summary of the invention
The technical problem that the present invention solves be to provide a kind of improve slag-Jin separating effect and titanium aluminum alloy quality titanium aluminum alloy preparation method and corresponding preparation facilities.
The technical solution adopted for the present invention to solve the technical problems is: titanium aluminum alloy preparation method, carries out thermite reaction and prepare titanium aluminum alloy under hypergravity environment of system.
Further: comprise the retort for carrying out thermite reaction and hypergravity generation system, under described retort is placed in and produces the hypergravity environment of system of system generation by hypergravity.
The present invention also comprises a kind of titanium aluminum alloy preparation facilities for above-mentioned titanium aluminum alloy preparation method, comprise the retort for carrying out thermite reaction, also comprise hypergravity and produce system, described hypergravity produces system and comprises bracing frame, central rotating shaft, rotation transverse arm and driving mechanism; Support frame as described above comprises lower supporting plate and upper cover plate; Described central rotating shaft is vertically arranged, and its upper end is rotatably connected by bearing and upper cover plate, and its lower end is rotatably connected by bearing and lower supporting plate; Described rotation transverse arm is arranged between lower supporting plate and upper cover plate, and is fixedly connected with central rotating shaft; The drive end of described driving mechanism coordinates with central rotating shaft transmission; Described retort is articulated in by wireline and rotates on transverse arm away from the free end of central rotating shaft.
Further: described rotation transverse arm has two free ends, the middle part rotating transverse arm is fixedly connected with central rotating shaft, and the two free end relative centre rotating shafts rotating transverse arm are symmetrical; Described retort is articulated on a wherein free end of rotation transverse arm by wireline, and another free end rotating transverse arm is provided with the counterweight tank of wireline mounting, and the weight of described counterweight tank is consistent with the weight of retort.
Further: described driving mechanism is stepless time adjustment motor.
Further: on the free end rotating transverse arm, the axis rotating transverse arm is provided with multiple wireline mounting part.
Further: also comprise sleeve, described jacket casing on central rotating shaft, and centrally rotating shaft axially can move up and down adjustment, and described rotation transverse arm is fixedly connected with sleeve.
Further: on sleeve, be provided with sleeve pilot hole, the adjustment hole matched with sleeve pilot hole central rotating shaft being provided with multiple centrally rotating shaft axial distribution; Sleeve pilot hole is connected or pinned connection with adjustment hole bolt.
Further: the cavity of retort inside is combined by the frustum of a cone stood upside down and a semisphere; Retort is also provided with temperature detector; The oral area of retort is provided with capping, capping is provided with exhaust smoke hole.
Further: described upper cover plate is retractable structure, upper cover plate is provided with handle and spy hole; The bearing connecting lower supporting plate and central rotating shaft is sliding surface bearing.
The invention has the beneficial effects as follows: carry out under thermite reaction being arranged on hypergravity environment of system, not only can strengthen mass transfer in reaction process, heat transfer process, the separating effect of melting slag-Jin can also be strengthened, reduce the waste of titanium resource; Reduce the intrusion probability of impurity element in titanium aluminum alloy simultaneously; In addition, can also increase the density of titanium aluminum alloy to a certain extent, secondary refining that even can be follow-up is separated and just can obtains the higher titanium aluminum alloy of quality, reduces production cost.Titanium aluminum alloy preparation facilities of the present invention, its structure is simple, and can regulate hypergravity coefficient as required, and its regulate process is simple, only need to adjust motor speed or adjust retort to be connected to the position rotating transverse arm, can the two jointly regulate where necessary.
Accompanying drawing explanation
Fig. 1 is the structural representation of titanium aluminum alloy preparation facilities of the present invention;
Be labeled as in figure: driving mechanism 1, joint flange 2, screw 3, bearing 41, bearing 42, central rotating shaft 5, sleeve 6, sleeve pilot hole 7, counterweight tank 8, retort 9, temperature detector 10, capping 11, wireline mounting part 12, rotation transverse arm 13, lower supporting plate 14, handle 15, spy hole 16, upper cover plate 17, wireline 18.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described; Certainly; the present invention is not limited to following specific embodiment; when not deviating from flesh and blood of the present invention; those of ordinary skill in the art make various corresponding change or distortion when not paying creative work according to the present invention, all belong in protection domain of the presently claimed invention.
As shown in Figure 1, titanium aluminum alloy preparation facilities of the present invention, comprises the retort 9 for carrying out thermite reaction, also comprises hypergravity and produces system, and described hypergravity produces system and comprises bracing frame, central rotating shaft 5, rotates transverse arm 13 and driving mechanism 1; Support frame as described above comprises lower supporting plate 14 and upper cover plate 17; Described central rotating shaft 5 is vertically arranged, and its upper end is rotatably connected by bearing 41 and upper cover plate 17, and its lower end is rotatably connected by bearing 42 and lower supporting plate 14; Described rotation transverse arm 13 is arranged between lower supporting plate 14 and upper cover plate 17, and is fixedly connected with central rotating shaft 5; The drive end of described driving mechanism 1 coordinates with central rotating shaft 5 transmission; Described retort 9 is articulated on the free end away from central rotating shaft 5 on rotation transverse arm 13 by wireline 18.
Wherein hypergravity produces the effect of system is for retort 9 produces super gravity field environment, can make to carry out in retort 9 under process that thermite reaction prepares titanium aluminum alloy is in super gravity field environment like this, improve the separating effect of slag-Jin with this, improve titanium aluminum alloy quality simultaneously.
In the present invention, hypergravity produces system and can produce the principle of Elevated Gravity for adopting centrifugal principle; When driving mechanism 1 drives central rotating shaft 5 to rotate, and then driven rotary transverse arm 13 and retort 9 are around the axis rotation of central rotating shaft 5, so both can produce centrifugal action, under making retort 9 be in super gravity field environment.Further, its hypergravity coefficient regulates by regulating the rotating speed of driving mechanism; For the ease of regulating driving mechanism 1, can arrange driving mechanism 1 is stepless time adjustment motor.Certainly, also by being provided with multiple wireline mounting part 12 along the axis rotating transverse arm 13 on the free end rotating transverse arm 13, by wireline 18 is connected from different wireline mounting parts 12, even if different hypergravity coefficients also can be obtained under identical rotating speed, to reach the regulating effect to hypergravity coefficient.
In addition, preferably, the middle part rotating transverse arm 13 can be fixedly connected with central rotating shaft 5, rotate transverse arm 13 like this and there are two free ends, and it be symmetrical to arrange the two free end relative centre rotating shafts 5 rotating transverse arm 13; Described retort 9 is articulated on a wherein free end of rotation transverse arm 13 by wireline 18, and another free end rotating transverse arm 13 is provided with the counterweight tank 8 of wireline mounting, and the weight of described counterweight tank 8 is consistent with the weight of retort 9.The benefit of such setting to make the rotation of rotation transverse arm 13 more steady, reduces potential safety hazard.
In addition, also can arrange sleeve 6, described sleeve 6 is enclosed within central rotating shaft 5, and centrally rotating shaft 5 axially can move up and down adjustment, and described rotation transverse arm 13 is fixedly connected with sleeve 6.Carry out lift adjustment by what arrange that sleeve 6 can be convenient to rotation transverse arm 13 and retort 9 etc., the convenient height location regulating retort 9, is also convenient to transfer retort 9, so that carry out the operations such as reinforced and feeding.As for sleeve 6 matching relationship with central rotating shaft 5, structure can be preferably as follows: on sleeve 6, be provided with sleeve pilot hole 7, the adjustment hole matched with sleeve pilot hole 7 that central rotating shaft 5 is provided with multiple centrally rotating shaft 5 axial distribution; Sleeve pilot hole 7 is connected or pinned connection with adjustment hole bolt.
In addition, after retort 9 starts rotation, for different rotating speeds, different offsetting dip angles can be there is in retort 9, and be separated and the eliminating of smog in order to the slag-Jin be more conducive in retort 9, the cavity preferably arranging retort 9 inside is combined by the frustum of a cone stood upside down and semisphere.Can be piled up by the magnesia brick of heat insulating as retort 9 itself and form.In addition, for the ease of the temperature conditions in detection reaction tank 9, can set temperature detector 10; Usually multiple temperature detector 10 can be inserted from outside to inside along the different heights of retort 9, to measure the temperature of different heights in retort 9.In addition, for preventing material splash, generally the oral area of retort 9 is provided with capping 11, and for the ease of the discharge of smog, exhaust smoke hole can be provided with in capping 11.
For the ease of operating retort 9, rotation transverse arm 13 etc., upper cover plate 17 can be set to retractable structure, and on upper cover plate 17, be provided with handle 15 and spy hole 16; When upper cover plate 17 opened by needs, only need can be opened very easily by handle.And the effect of spy hole 16 can be convenient to observe inside on the one hand, be also convenient to passing through of some wires on the other hand; Because under normal circumstances, in order to improve safety performance, the surrounding of whole device is generally closed and is arranged, as the outline of device being set to the barrel-like structure of surrounding sealing.In addition, considering that lower supporting plate 14 needs to carry central rotating shaft 5 usually, therefore can be set to sliding surface bearing by connecting the bearing 42 of lower supporting plate 14 with central rotating shaft 5.
In addition, usually driving mechanism 1 is arranged on bottom, then can be installed on lower supporting plate 14 by screw 3 by joint flange 2, as shown in fig. 1.
In addition, for the ease of controlling whole device and monitor, also can be provided with corresponding Controlling System, Controlling System conveniently can carry out speed adjustment and monitoring to driving mechanism 1, as the rotating speed by controlling driving mechanism 1 based on the Controlling System of PLC, and by display screen, rotating speed is shown in real time.Certainly, display screen also can be set the temperature in retort 9 is shown in real time, so that operating personnel's observation.
Embodiment 1
Get titanium slag, aluminium powder according to a certain percentage, and add dehydrated alcohol and on ball mill, carry out ground and mixed obtain raw material, then nominal gets raw material 2kg, then adds lime and heat-generating agent Potcrate, puts into retort again with after raw material Homogeneous phase mixing.Last layer priming mixture is added on surface at compound, igniting starts electrodeless motor 1 after triggering reaction, electrodeless motor 1 drives central rotating shaft 5 to rotate, adjusting rotary speed to 1500 rev/min, disable motor after 30 minutes, retort 9 is slowly slowed down with central rotating shaft until stop the rotation, and is returned to vertical state by heeling condition.Question response thing takes out after being cooled to room temperature, and product is obviously divided into two-layer up and down, and interface is clear, and upper strata is slag, and lower floor is titanium aluminum alloy.The product iron hammer of upper and lower double-layer structure is knocked open, is separated better, obtains titanium aluminum alloy block and furnace clinker.Polishing, polishing are carried out to titanium aluminum alloy, is observed visually bright metalluster.By the furnace clinker iron hammer knock fritter obtained, do not observe the titanium aluminum alloy carried secretly, and be even, compact shape.
Claims (10)
1. titanium aluminum alloy preparation method, is characterized in that: under hypergravity environment of system, carry out thermite reaction prepare titanium aluminum alloy.
2. titanium aluminum alloy preparation method as claimed in claim 1, it is characterized in that: comprise the retort (9) for carrying out thermite reaction and hypergravity generation system, under described retort (9) is placed in and produces the hypergravity environment of system of system generation by hypergravity.
3. titanium aluminum alloy preparation facilities, comprise the retort (9) for carrying out thermite reaction, it is characterized in that: also comprise hypergravity and produce system, described hypergravity produces system and comprises bracing frame, central rotating shaft (5), rotates transverse arm (13) and driving mechanism (1); Support frame as described above comprises lower supporting plate (14) and upper cover plate (17); Described central rotating shaft (5) is vertically arranged, and its upper end is rotatably connected by bearing (41) and upper cover plate (17), and its lower end is rotatably connected by bearing (42) and lower supporting plate (14); Described rotation transverse arm (13) is arranged between lower supporting plate (14) and upper cover plate (17), and is fixedly connected with central rotating shaft (5); The drive end of described driving mechanism (1) coordinates with central rotating shaft (5) transmission; Described retort (9) is articulated on the free end away from central rotating shaft (5) in rotation transverse arm (13) by wireline (18).
4. titanium aluminum alloy preparation facilities as claimed in claim 3, it is characterized in that: described rotation transverse arm (13) has two free ends, the middle part rotating transverse arm (13) is fixedly connected with central rotating shaft (5), and the two free end relative centre rotating shafts (5) rotating transverse arm (13) are symmetrical; Described retort (9) is articulated on a wherein free end of rotation transverse arm (13) by wireline (18), another free end rotating transverse arm (13) is provided with the counterweight tank (8) of wireline mounting, and the weight of described counterweight tank (8) is consistent with the weight of retort (9).
5. titanium aluminum alloy preparation facilities as claimed in claim 3, is characterized in that: described driving mechanism (1) is stepless time adjustment motor.
6. titanium aluminum alloy preparation facilities as claimed in claim 3, is characterized in that: on the free end rotating transverse arm (13), the axis rotating transverse arm (13) is provided with multiple wireline mounting part (12).
7. titanium aluminum alloy preparation facilities as claimed in claim 3, it is characterized in that: also comprise sleeve (6), described sleeve (6) is enclosed within central rotating shaft (5), and centrally rotating shaft (5) axially can move up and down adjustment, described rotation transverse arm (13) is fixedly connected with sleeve (6).
8. titanium aluminum alloy preparation facilities as claimed in claim 7, it is characterized in that: it is characterized in that: on sleeve (6), be provided with sleeve pilot hole (7), the adjustment hole matched with sleeve pilot hole (7) that central rotating shaft (5) is provided with multiple centrally rotating shaft (5) axial distribution; Sleeve pilot hole (7) is connected or pinned connection with adjustment hole bolt.
9. titanium aluminum alloy preparation facilities as claimed in claim 3, is characterized in that: the cavity of retort (9) inside is combined by the frustum of a cone stood upside down and a semisphere; Retort (9) is also provided with temperature detector (10); The oral area of retort (9) is provided with capping (11), capping (11) is provided with exhaust smoke hole.
10. titanium aluminum alloy preparation facilities as claimed in claim 3, is characterized in that: described upper cover plate (17) is retractable structure, upper cover plate (17) is provided with handle (15) and spy hole (16); Connecting lower supporting plate (14) with the bearing (42) of central rotating shaft (5) is sliding surface bearing.
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| CN201510633946.6A CN105154716B (en) | 2015-09-29 | 2015-09-29 | Titanium-aluminium alloy preparation method and preparation facilitiess |
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| CN201510633946.6A CN105154716B (en) | 2015-09-29 | 2015-09-29 | Titanium-aluminium alloy preparation method and preparation facilitiess |
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| WO2021196488A1 (en) * | 2020-04-03 | 2021-10-07 | 浙江大学 | Cantilever-type centrifugal super-gravity casting device |
| CN113932615A (en) * | 2021-10-18 | 2022-01-14 | 北京科技大学 | Supergravity high-temperature metallurgy device and method |
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Effective date of registration: 20201113 Address after: 233000 No.11 Qiyan Road, industrial park, Longzihu District, Bengbu City, Anhui Province Patentee after: Bengbu Zhongcheng die casting machine Machinery Manufacturing Co.,Ltd. Address before: 617000 Airport Road, Panzhihua, Sichuan, No. 10 Patentee before: PANZHIHUA University |
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