CN101612638A - Horizontal type device for reheating semi-solid metal blank material - Google Patents
Horizontal type device for reheating semi-solid metal blank material Download PDFInfo
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Abstract
A kind of horizontal type device for reheating semi-solid metal blank material is made up of induction heating power, eddy-current heating mechanism and blank carrier mechanism, is provided with three heat material at least and puts material, discharging totally five stations; The load coil of three sections horizontal placements of independence of described eddy-current heating mechanism's employing, the Electricity Federation is logical mutually between each load coil, divides to be located on three hot stuff man positions; Described blank carrier mechanism comprises that a propulsive mechanism and transports the blank device, and transporting the blank device is a conveyer of advancing before each station; Before propulsive mechanism is positioned at each load coil station.Select induction heat syllogic mode of heating for use, the distribution that can make the heating of blank and temperature field more evenly rationally; Adopt horizontal type structure, because blank and support zone contact area are big, the stream soup that can not cave in, transporting of blank is also many simply and easily, and allows blank that higher liquid phase fraction is arranged, and is convenient to more complicated parts of thixotropic forming.
Description
Technical field
The invention belongs to the semisolid Metal Processing technical field, relate in particular to a kind of semi-solid-state metal blank second heating apparatus.
Background technology
The semisolid Metal Processing technology is a kind of novel method that shapes between traditional solid-state process technology (as rolling, extruding, forging etc.) and liquid forming technique (as casting etc.).The technical characterictic of its core comprises: 1) forming temperature is between the solid-liquid phase line temperature; 2) grain form is different from the dendroid grain form in the general solidified structure, but shows as non-dendritic, subglobose grain form.Owing to have an above feature, semi-solid processing has that casting flaw is few, the porosity is low, is easy to shape, die life advantages of higher.These advantages make semi-solid processing compare at cost, aspect of performance with tradition methods of shaping such as die casting, extrusion casint, gravitational castings all to have suitable competitive advantage.In addition, semi-solid processing also is with a wide range of applications at the direct near-net-shape of casting and forging, deforming alloy, the aspects such as casting character of the difficult casting alloy of improvement.
The thixotroping process technology is the semi-solid processing that obtains commercial Application the earliest, and this method can be divided into semi-solid blank preparation, post bake, three operation stages of thixotroping processing.Usually the requirement to the post bake technology of semi-solid alloy blank is: the semi-solid alloy blank that 1. passes through post bake is inside and outside, upper and lower temperature difference should be even as far as possible, to avoid in follow-up thixotropic forming process owing to mobile difference causes phenomenons such as Solid-Liquid Separation, also can avoid simultaneously producing defectives such as " resembling foot " after the post bake, bring difficulty for the clamping carrying of alloy blank; 2. the used time of post bake process should be short as far as possible, farthest to avoid semi-solid blank to produce surface oxidation in post bake process and primary crystal grain is too grown up, has a negative impact for the final performance of semi-solid die casting spare; 3. provide excellent microstructure basis for follow-up thixotropic forming.Based on above technological requirement, how to design the important research direction that a kind of device that can satisfy above-mentioned post bake technological requirement becomes thixotroping process technology commercial Application.
And be difficult to satisfy above-mentioned needs at the resistance heated and the single station eddy-current heating that adopt at present, and resistance heated is an electric current when it is had the resistance of obstruction, to the resistance acting, these merits change into for heat energy, and metal stock to be heated is heated.Though blank heating is even, the efficient of resistance heated is very slow, length consuming time, and the efficiency of heating surface is low, and crystal grain is easy to very much grow up at long heated condition, causes crystal grain thick.Though and single station eddy-current heating efficiency of heating surface height, heat time heating time is short, can avoid grain coarsening, but single station eddy-current heating just adopts a station that metal stock is heated, have only the metal stock that is heated to fixed temperature taken away after, just can carry out the heating of next metal stock, heating rhythm is slow, blank production efficiency is low, is not suitable for the production of metal stock continuous large-scale, and very difficult input is commercially produced.
Chinese patent 03115916.8 has been mentioned the post bake technology in a kind of aluminium alloy semi-solid forming technique, this technology is divided into Fast Heating and heating period at a slow speed, coil is vertical placement in this technology, and its basic thought of this technology is by Fast Heating and heats two stage heating at a slow speed the semi-solid aluminium alloy blank heating is arrived predetermined forming temperature.In rapid heat-up stage, the semi-solid aluminium alloy blank is heated rapidly to a certain temperature under bigger surface power density, adjust blank place station and surface power density then, the semi-solid alloy blank is heated at a slow speed under less surface power density, when treating that blank temperature arrives required semi-solid temperature, the blank taking-up is formed.Though it is less that this technology can obtain the internal-external temperature difference of blank, the temperature field effect of uniform, satisfy that programming rate is fast, temperature control accurately, uniformity of temperature profile, oxidation be few, is easy to the requirement of control automatically.But this patent has only provided a kind of post bake technology of aluminium alloy semi-solid forming technique, there are not special requirement and right for the second heating apparatus that adopts, the modes of emplacement of coil is vertical, not mentioned horizontal type device, and the two stage heating process of this process using, can make the inside and outside temperature difference of blank still bigger than normal, the uniformity in temperature field remains further to be improved.
In the semi solid slurry second heating apparatus that above-mentioned patent relates to, the modes of emplacement of coil has all adopted vertical layout, also is about to semi-solid blank and is vertical mode and places induction coil to heat.If for the little semi-solid blank of ratio of height to diameter, adopt vertical heater also blank heating can be formed to semisolid, can not cave in and defectives such as " resembling foot " yet, but for the big semi-solid blank of ratio of height to diameter, if employing vertical unit, shape at heating later stage blank can change, form " resembling foot ", blank can cave in transporting transfer process, stream soup, what influence blank adds transporting of thermal effect and blank, operation and shaping, therefore the liquid phase fraction of blank can not be very high, is difficult to the complex parts that are shaped, and is especially more like this for the very big semi-solid blank of ratio of height to diameter.In addition, for semisolid post bake vertical unit, the mechanical drive mode of employing is also very complicated, often comprises the complex mechanism such as lifting, rotation of transmission mechanism, causes the device bulky complex, and cost of investment is also higher.
Summary of the invention
The purpose of this invention is to provide a kind of horizontal type device for reheating semi-solid metal blank material, this device can guarantee to be heated that the semi-solid blank internal-external temperature difference is little, uniform distribution of temperature field, temperature control accurately and rhythm of production be complementary with the following process shaping.
For achieving the above object, the present invention takes following design:
A kind of horizontal type device for reheating semi-solid metal blank material is made up of induction heating power, eddy-current heating mechanism and blank carrier mechanism, and induction heating power provides power supply for eddy-current heating mechanism, is provided with three heat material at least and puts material, discharging totally five stations; Described eddy-current heating mechanism is the logical load coil in mutual Electricity Federation that three sections continuous horizontal types are placed; Described blank carrier mechanism comprises that a propulsive mechanism and transports the blank device, and propulsive mechanism is positioned at the load coil prosopyle end of placing foremost, transports the blank device and shuttles back and forth in the load coil that continuous horizontal type is placed.The described blank device that transports comprises that one is laid on the interior guide rail of load coil that continuous horizontal type is placed, one group of carrier unit device that slides on guide rail.
The present invention also can take following design:
A kind of horizontal type device for reheating semi-solid metal blank material is made up of induction heating power, eddy-current heating mechanism and blank carrier mechanism, and induction heating power provides power supply for eddy-current heating mechanism, is provided with three heat material at least and puts material, discharging totally five stations; The load coil of three sections horizontal placements of independence of described eddy-current heating mechanism's employing, the Electricity Federation is logical mutually between each load coil, divides to be located on three hot stuff man positions; Described blank carrier mechanism comprises that a propulsive mechanism and transports the blank device, and transporting the blank device is a conveyer of advancing before each station; Before propulsive mechanism is positioned at each load coil station.Described propulsive mechanism is one to have the transmission mechanism that one group of (three or more) servo-actuated divides pawl, and one group of (three or more) servo-actuated divides the set position of pawl corresponding with each load coil station.
The present invention selects induction heating mode for use, and heater coil adopts the syllogic mode of heating: promptly: the distribution that Fast Heating section, bringing-up section and soaking soaking zone at a slow speed, this mode of heating can make the heating of blank and temperature field more evenly rationally.
The present invention is a kind of multistation induction heating apparatus, adopts horizontal type structure, because blank and support zone contact area are big, stream soup can not cave in, transporting of blank is also many simply and easily, and allows blank that higher liquid phase fraction is arranged, and is convenient to more complicated parts of thixotropic forming.
Present device both had been suitable for the heating of acieral material semi-solid blank, also was suitable for the heating of magnesium base alloy, zinc-containing alloy, acid bronze alloy, nickel-base alloy, cobalt-base alloys, ferrous alloy and other alloy materials and composite material semi-solid state blank thereof.
Advantage of the present invention is:
1, with the resistance heated mode relatively, the present invention has efficiency of heating surface height, avoid characteristics such as crystal grain is thick; Compare with single station induction heating equipment, the present invention has efficient height and the uniform characteristics of heating-up temperature again.
2, compare with two stage mode of heatings, the syllogic heating that the present invention adopts can make the inside and outside temperature difference of blank littler, and the distribution of blank temperature field is more even, and this is very favourable to follow-up shaping.
3, compare with semisolid heating vertical unit, the present invention is fit to the heating of the semi-solid blank of larger ratio of height to diameter, allow blank that higher liquid phase fraction is arranged, can avoid heating later stage blank formation " resembling foot " and transport in the transfer process and can cave in, flow soup, help transporting, operate and being shaped of blank, be convenient to more complicated parts of thixotropic forming.
4, this device is not only applicable to the semisolid heating of circular blank, is applicable to the heating of the semi-solid blank of stock of square or other shapes yet, and range of application is wider.
5, the present invention does not need the complicated mechanical transmission mechanism, and simple and compact equipment structure has handling safety, advantage such as stable.
Description of drawings
Fig. 1 is horizontal type device for reheating semi-solid metal blank material one example structure schematic diagram of the present invention (a is main looking, and b is for overlooking).
Fig. 2 is another example structure schematic diagram (overlooking) of horizontal type device for reheating semi-solid metal blank material of the present invention.
The specific embodiment
As shown in Figure 1 and Figure 2, horizontal type device for reheating semi-solid metal blank material of the present invention is formed by induction heating power, eddy-current heating mechanism and blank carrier mechanism, and induction heating power provides power supply for eddy-current heating mechanism.
Described electromagnetic induction heating power supply can be selected thyristor supply or IGBT power supply or other power supplys, and supply frequency is 200～1500Hz.
Each horizontal type device for reheating semi-solid metal blank material all is provided with three heat material at least and puts material, discharging totally five stations, and the logical load coil in mutual Electricity Federation of three sections horizontal placements is set on the hot stuff man position.
The load coil that above-mentioned mutual Electricity Federation leads to is in series or in parallel with each other, series connection is connected with mode of mixing in parallel, be divided into fast, at a slow speed with soaking 3 segmentation heater coil groups, wherein the Fast Heating coil groups is that 1～8 coil is formed, and each coil turn is 3～30 circles; The heater coil group is that 1～8 coil is formed at a slow speed, and each coil turn is 1～30 circle; Soaking heater coil group is that 1～8 coil is formed, and each coil turn is 1～30 circle.
The winding form of described load coil can be circle or ellipse, square, trapezoidal shape.
Described load coil inside dimension is 1.1～1.5 times of billet size, and the length of induction coil is 1.5～4 times of charge length.
Described blank carrier mechanism includes propulsive mechanism and and transports the blank device, transporting the blank device is transported to the batching of each processing on each station according to the order of sequence, propulsive mechanism is positioned at foremost the load coil prosopyle end of placing, and will transport on each station workpiece and advance in the load coil or finish pusher (or drawing) in this load coil heating and go out this workpiece.
That described propulsive mechanism adopts is pneumatic, a kind of in hydraulic pressure or the machine driving.
Below in conjunction with the diagram and specific embodiment the present invention will be further described:
As shown in Figure 1, be Semi-Solid Thixoforming processing post bake horizontal type device, this heater places on the operating desk 12, (3,4 is first section by three sections heater coils 3,4,5,6,7,8 in eddy-current heating mechanism, 5,6 is second section, and 7,8 is the 3rd section) be composed in series, load coil is horizontal placement, heater coil adopts the square copper pipe coiling of 14 * 16mm to form interior logical cooling water.Internal coil diameter 105mm, loop length is 140mm, establishes 5 stations altogether, 2, one discharging stations 6 of a reinforced station.The load coil of the 3rd station is 8 circles (Fast Heating sections), the heater coil 3,4 in the corresponding diagram 1; The load coil of the 4th station is 7 circles (bringing-up sections at a slow speed), the heater coil 5,6 in the corresponding diagram 1; The load coil of the 5th station is 5 circles (samming sections), the heater coil 7,8 in the corresponding diagram 1; The workpiece of finishing heating exports station 9 to.
The described blank device that transports shuttles back and forth in the load coil that continuous horizontal type is placed (comprising that one is laid on 11, the one groups of conveyers that slide 9 of slide mechanism in the load coil that continuous horizontal type places on guide rail).Propulsive mechanism 1 is a cylinder, drives by pneumatic mode, and conveyer 9 is 6 slide tray dollies, and the pallet dolly adopts alumina silica refractory to make, and slide mechanism 11 is two elongate guide rails, and the pallet dolly can horizontally slip on guide rail.
Put material station 2 and be arranged at the front of load coil 3, the back of propulsive mechanism cylinder 1, discharging station 10 places the back of load coil 8.
Induction heating power adopts the IGBT power supply, and supply frequency 500Hz, the nominal power of heating are 32Kw.
Before beginning heating, 2024 aluminium alloy semi-solid state blanks of well cutting are placed on the pallet dolly of material station 2,2024 aluminium alloy semi-solid state blanks are of a size of
Propulsive mechanism 1 starts, 2024 aluminium alloy semi-solid state blanks are pushed carry out Fast Heating in the load coil 3, in this process, a pallet dolly of conveyer 9 is placed on the slide mechanism 11 at material station 2 places, and 2024 aluminium alloy semi-solid state blanks of second well cutting are placed on this pallet dolly, after waiting for 40s, propulsive mechanism 1 starts, first semi-solid blank pushed from heater coil 3 carry out Fast Heating the heater coil 4 once more, second 2024 aluminium alloy semi-solid state blank on the station 2 also is pushed into and carries out Fast Heating in the heater coil 3, in this process, again a pallet dolly is placed on the slide mechanism 11 at material station 2 places, and on the pallet dolly that 2024 aluminium alloy semi-solid state blanks of the 3rd well cutting are placed, behind the about 40s of blank heating, propulsive mechanism 1 starts, first semi-solid blank pushed the heater coil 5 from heater coil 4 heat at a slow speed, same second semi-solid blank also pushes from heater coil 3 and carries out Fast Heating the heater coil 4, and the 3rd 2024 aluminium alloy semi-solid state blanks on the station 2 also are pushed into and carry out Fast Heating in the heater coil 3, repeat above-mentioned action, when first semi-solid blank is pushed into mechanism 1 and releases discharging station 10 from load coil 8, blank temperature has reached 580 ℃, the injection chamber that semi-solid blank can be moved into fast die casting machine carries out casting forming, take off standby from slide mechanism 11 pallet dolly 9 simultaneously, so just finished the overall process of 2024 aluminium alloy semi-solid state blanks heating, with this actuation cycle, can realize the continuous heating of semi-solid blank.
As shown in Figure 2, for Semi-Solid Thixoforming is processed with the another kind of device in the post bake horizontal type device, this heater places on the operating desk 12, eddy-current heating mechanism is composed in series by 3 heater coils 3,4,5 (syllogic), load coil is horizontal placement, heater coil adopts the square copper pipe coiling of 14 * 16mm to form interior logical cooling water.Internal coil diameter 105mm, loop length is 140mm, establishes 5 stations altogether, 2, one discharging stations 7 of a reinforced station.The load coil of the 1st heating station is 8 circles (Fast Heating sections), the heater coil 3 in the corresponding diagram 2; The load coil of the 2nd heating station is 7 circles (bringing-up sections at a slow speed), the heater coil 4 in the corresponding diagram 2; The load coil of the 3rd heating station is 5 circles (samming sections), the heater coil 4 in the corresponding diagram 2.
The blank carrier mechanism is made up of propulsive mechanism 1, conveyer 6, and propulsive mechanism 1 drives by pneumatic mode, has three servo-actuateds and divides pawl, and three servo-actuateds divide the set position of pawl corresponding with each load coil station.Three servo-actuateds of propulsive mechanism divide pawl blank can be sent into coil or pull out from coil.In the present embodiment, conveyer 6 is a conveyer belt, passes through driven by motor.
Put and expect that station 2 is arranged at the front of load coil 3, discharging station 10 places the back of load coil 5.
Induction heating power adopts the IGBT power supply, and supply frequency 500Hz, the nominal power of heating are 32Kw.
Before beginning heating, 2024 aluminium alloy semi-solid state blanks of well cutting are placed on the material station 2,2024 aluminium alloy semi-solid state blanks are of a size of
Conveyer 6 starts, 2024 aluminium alloy semi-solid state blanks are transported to the dead ahead of induction heater 3, propulsive mechanism 1 startup was sent into blank and was carried out Fast Heating in the load coil 3 this moment, and 2024 aluminium alloy semi-solid state blanks with second well cutting place on the material station 2 simultaneously.Behind the about 40s of blank heating, propulsive mechanism 1 starts, and first semi-solid blank is taken out place on the conveyer from load coil 3.Conveyer 6 starts the dead ahead that the first compact material is transported to load coil 4 then, this moment, the second compact material was transported to the dead ahead of load coil 3 by conveyer 6, and propulsive mechanism 1 starts respectively the first compact material and the second compact material sent in load coil 4 and 3 and heats.In this process, 2024 aluminium alloy semi-solid state blanks of the 3rd well cutting are placed on the material station 2.Behind the about 40s of blank heating, propulsive mechanism 1 starts, and first semi-solid blank and the second compact material is taken out respectively place on the conveyer 6 from load coil 4 and 3.Conveyer 6 startups are transported to the first compact material and the second compact material in the dead ahead of load coil 5 and 4 then, this moment, the 3rd compact material was transported to the dead ahead of load coil 3 by conveyer 6, and propulsive mechanism 1 starts respectively the first compact material, the second compact material and the 3rd compact material to be sent in load coil 5,4 and 3 and heats.Repeat above-mentioned action, when first semi-solid blank is pushed into mechanism 1 and conveyer 6 and releases discharging station 7 from load coil 5, blank temperature has reached 580 ℃, the injection chamber that semi-solid blank can be moved into fast die casting machine carries out casting forming, so just finished the overall process of 2024 aluminium alloy semi-solid state blanks heating, with this actuation cycle, can realize the continuous heating of semi-solid blank.
The various embodiments described above can not depart from the scope of the present invention down in addition some variations, thus more than explanation comprise and accompanying drawing shown in structure should be considered as exemplary, but not in order to limit claim of the present invention.
Claims (10)
1, a kind of horizontal type device for reheating semi-solid metal blank material is made up of induction heating power, eddy-current heating mechanism and blank carrier mechanism, and induction heating power is characterized in that for eddy-current heating mechanism provides power supply:
At least be provided with three heat material and put material, discharging totally five stations;
Described eddy-current heating mechanism is the logical load coil in mutual Electricity Federation that three sections continuous horizontal types are placed;
Described blank carrier mechanism comprises that a propulsive mechanism and transports the blank device, and propulsive mechanism is positioned at the load coil prosopyle end of placing foremost, transports the blank device and shuttles back and forth in the load coil that continuous horizontal type is placed.
2, horizontal type device for reheating semi-solid metal blank material according to claim 1, it is characterized in that: the described blank device that transports comprises that one is laid on the interior guide rail of load coil that continuous horizontal type is placed, one group of carrier unit device that slides on guide rail.
3, a kind of horizontal type device for reheating semi-solid metal blank material is made up of induction heating power, eddy-current heating mechanism and blank carrier mechanism, and induction heating power is characterized in that for eddy-current heating mechanism provides power supply:
At least be provided with three heat material and put material, discharging totally five stations;
The load coil of three sections horizontal placements of independence of described eddy-current heating mechanism's employing, the Electricity Federation is logical mutually between each load coil, divides to be located on three hot stuff man positions;
Described blank carrier mechanism comprises that a propulsive mechanism and transports the blank device, and transporting the blank device is a conveyer of advancing before each station; Before propulsive mechanism is positioned at each load coil station.
4, horizontal type device for reheating semi-solid metal blank material according to claim 3, it is characterized in that: described propulsive mechanism is one to have the transmission mechanism that one group of servo-actuated divides pawl, and each servo-actuated divides the set position of pawl corresponding one by one with each load coil station.
5, according to claim 1 or 3 described horizontal type device for reheating semi-solid metal blank material, it is characterized in that: in series or in parallel with each other between each coil of the load coil of described three sections horizontal placements, series connection is connected with mode of mixing in parallel.
6, according to claim 1 or 3 described horizontal type device for reheating semi-solid metal blank material, it is characterized in that: the load coil of described three sections horizontal placements for fast, at a slow speed with the coil groups of soaking heating, wherein the Fast Heating coil groups is that 1～8 coil is formed, and each coil turn is 3～30 circles; The heater coil group is that 1～8 coil is formed at a slow speed, and each coil turn is 1～30 circle; Soaking heater coil group is that 1～8 coil is formed, and each coil turn is 1～30 circle.
7, according to claim 1 or 3 described horizontal type device for reheating semi-solid metal blank material, it is characterized in that: described induction heating power can be selected thyristor supply, IGBT power supply, and power frequency is 200～1500Hz.
8, according to claim 1 or 3 described horizontal type device for reheating semi-solid metal blank material, it is characterized in that: described propulsive mechanism adopts a kind of mechanism in pneumatic, hydraulic pressure or the machine driving.
9, according to claim 1 or 3 described horizontal type device for reheating semi-solid metal blank material, it is characterized in that: the winding form of described load coil can be circle or ellipse, square, trapezoidal shape.
10, according to claim 1 or 3 described horizontal type device for reheating semi-solid metal blank material, it is characterized in that: the inside dimension of described load coil is 1.1～1.5 times of billet size, and the length of induction coil is 1.5～4 times of charge length.
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| CN200810115679A CN101612638A (en) | 2008-06-26 | 2008-06-26 | Horizontal type device for reheating semi-solid metal blank material |
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| CN200810115679A CN101612638A (en) | 2008-06-26 | 2008-06-26 | Horizontal type device for reheating semi-solid metal blank material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489694A (en) * | 2011-12-26 | 2012-06-13 | 娄底市文昌科技有限公司 | Method and device for automatically transferring semisolid metal blank |
| CN102784876A (en) * | 2012-08-29 | 2012-11-21 | 太仓奥科机械设备有限公司 | Electrical heating device |
| CN103857088A (en) * | 2013-10-29 | 2014-06-11 | 北京有色金属研究总院 | Full-automatic continuous type secondary heating device for semisolid metal blanks |
| CN104213058A (en) * | 2014-05-29 | 2014-12-17 | 华东理工大学 | Preparation method suitable for secondary heating of semisolid thixotropy deformation aluminum alloy |
-
2008
- 2008-06-26 CN CN200810115679A patent/CN101612638A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489694A (en) * | 2011-12-26 | 2012-06-13 | 娄底市文昌科技有限公司 | Method and device for automatically transferring semisolid metal blank |
| CN102489694B (en) * | 2011-12-26 | 2013-10-09 | 娄底市文昌科技有限公司 | Method for automatically transferring semisolid metal blank |
| CN102784876A (en) * | 2012-08-29 | 2012-11-21 | 太仓奥科机械设备有限公司 | Electrical heating device |
| CN103857088A (en) * | 2013-10-29 | 2014-06-11 | 北京有色金属研究总院 | Full-automatic continuous type secondary heating device for semisolid metal blanks |
| CN103857088B (en) * | 2013-10-29 | 2015-11-18 | 北京有色金属研究总院 | Semisolid metal blank Full-automatic continuous second heating apparatus |
| CN104213058A (en) * | 2014-05-29 | 2014-12-17 | 华东理工大学 | Preparation method suitable for secondary heating of semisolid thixotropy deformation aluminum alloy |
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Open date: 20091230 |