CN104048780B - The device of Thermal History of Melts curve in pulsed current measurement liquid surface fluctuation solidifying fine crystal technique - Google Patents
The device of Thermal History of Melts curve in pulsed current measurement liquid surface fluctuation solidifying fine crystal technique Download PDFInfo
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- CN104048780B CN104048780B CN201410249329.1A CN201410249329A CN104048780B CN 104048780 B CN104048780 B CN 104048780B CN 201410249329 A CN201410249329 A CN 201410249329A CN 104048780 B CN104048780 B CN 104048780B
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Abstract
The present invention relates to the device of Thermal History of Melts curve in a kind of pulsed current measurement liquid surface fluctuation solidifying fine crystal technique, belong to materials processing technology field.Described device mainly includes the pulse power, parallel pole, heating wire, elevating lever, earthenware and plug；Heating wire connects 220V alternating current through plug, and parallel pole connects the pulse power, and elevating lever is placed the casting mold filling metal derby；First electrothermal wire heating makes metal derby melt；Elevating lever rises afterwards, makes parallel pole insert metal bath, and it is applied the process of pulse current liquid surface fluctuation；During thermocouple is also inserted into melt simultaneously and fix, record Thermal History of Melts curve.Compare tradition temp measuring method, present invention eliminates casting process, can more stablize, record Thermal History of Melts curve exactly, provide reliable Thermal History of Melts data for solidifying microlite by impulse current liquid surface disturbance technique.
Description
Technical field
The invention belongs to materials processing technology field, be related specifically to the device of Thermal History of Melts curve in a kind of pulsed current measurement liquid surface fluctuation solidifying fine crystal technique.
Technical background
In modern society, blank or ingot that overwhelming majority metal parts is all made up of casting process, although can largely changing the tissue of metal during reprocessing later and then optimizing its performance, but following process and final material property are still affected huge by the tissue signature that metal is formed in process of setting, therefore control the process of setting of metal material and solidified structure is always the emphasis of material supplier's author investigation, and crystal grain refinement can significantly improve cast properties, it is to improve one of the most effective method of metal solidification texture.In existing research, the method for thinning metal solidification texture mainly has two classes: one is physical thinning method, such as electromagnetic agitation, cast cold, mechanical vibration, ultrasound wave refinement etc.；Two is superalloy method, as added grow up inhibitor and nucleating agent etc..Wherein physical field treatment technology is people institute extensive concern as a kind of economy, environmental protection and the technology that has a high potential, and the research of this respect is achieved with many achievements.
In the technology of existing external field treatment metal solidification texture, Chinese patent 200710044164.4 discloses one " method for solidifying microlite by impulse current liquid surface disturbance ", this inventive method is cast into casting mold after metal molten overheated uniform temperature, by two parallel poles below melt metal bath surface inserted above, metal bath is implemented pulse current liquid surface fluctuation process, finally make the tissue of cast metals be refined.The method operation is the easiest, and thinning effect is notable.In commercial Application, the method can be used for the molding in metallurgical industry, continuous casting produces, and is suitable for the structure refinement of various metal materials, and application prospect is the most optimistic.And in order to probe into the essential mechanism of this thin crystal method further, thermal history curve when accurately measuring melt solidification under this thin crystal method effect is significant, but the device in this patent is in specific implementation process, it is by metal derby fusing held for some time by resistance furnace, again by pouring metal melt to casting mold, and by molten metal from resistance furnace be fetched into cast during this period of time in, molten metal dispels the heat the most in a large number, and when causing pouring into casting mold, its temperature decreases；And the Temperature Distribution in melt is had a significant impact by the mode of the height of cast gate, position and liquid metal filling equally, and these means are difficult to keep consistent during cast every time；Additionally, tradition temp measuring method inserts thermocouple and mainly has two kinds of means: one is thermocouple level to be imbedded in advance from the punching of casting mold sidewall, the drawback of this method is: melt is when being just poured in casting mold, flowing is acutely, temperature fluctuation is the biggest, cooling rate is very fast, and therefore its temperature recorded has bigger error, and there is the danger that melt leaks from thermocouple jack.Two is to insert in melt by thermocouple again after to be cast completing, and after molten metal pours into the casting mold that temperature is relatively low, solidification shell can be quickly formed at type wall, and the thermocouple being inserted into also can produce certain chilling action to the melt of region, this two factor causes measured temperature to be compared when cast just completes bigger deviation.In sum, the temperature of melt in the more difficult accurate acquisition solidifying microlite by impulse current liquid surface disturbance technique of the device in this patent is used.And the device in this patent overcomes these problems, can accurately record the thermal history curve within melt in solidifying microlite by impulse current liquid surface disturbance technique, provide temperature data accurately for probing into the essential mechanism of the method.
Summary of the invention
In place of the deficiencies in the prior art, it is an object of the invention to provide the device of Thermal History of Melts curve in a kind of pulsed current measurement liquid surface fluctuation solidifying fine crystal technique, measurement apparatus is simple and easy to do, and data measured is the most accurately and reliably.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
nullThe present invention includes: including: casting mold、Casting mold fixed system、Elevating lever、Slide、Guide rail、Screw mandrel、Nut seat、Motor、Earthenware、Parallel pole、Fixed system and pulley，Earthenware is positioned on top board，Parallel pole is fixed by fixed system，It is placed on earthenware，The upper end of screw mandrel is connected in fixed plate，And it is free to rotate，The lower end of screw mandrel and the driven member of motor connect，Guide rail、Elevating lever and screw mandrel through slide and are generally aligned in the same plane，Nut seat it is fixed with on slide，Nut seat and screw mandrel engage each other，Lower end and the slide of elevating lever fix，Upper end and the casting mold fixed system of elevating lever fix，The casting mold filling metal bath is positioned in casting mold fixed system，Elevating lever is through the hole at fixed plate center，Top board center burrows and is easy to casting mold and passes，When Motor Control screw mandrel rotates，Nut seat i.e. rises or falls along guide rail with slide，The casting mold filling metal bath is enable freely up and down to shuttle back and forth in heating wire and earthenware，Pulley is fixed under package unit base plate，It is easy to the movement of package unit.The pulse power connects parallel pole, and heating wire connects 220v alternating current via plug again by controller.Controller connects heating wire and its internal temperature-control heat couple of embedment, can detect and control the temperature of heating wire in real time；And controller connects motor, it is possible to control motor speed, thus adjust slide rising or falling speed.Temperature test is analyzed system and is made up of temperature thermocouple, Temperature-collection Recorder and fixed system, described temperature thermocouple is fixed on fixed system, and its signal output part is connected with the signal receiving end of described Temperature-collection Recorder, when parallel pole applies the process of pulse current liquid surface fluctuation to metal bath, described Temperature-collection Recorder monitors the measured temperature of the internal test point of metal bath to be measured, and output temperature metrical information in real time.When casting mold is positioned at heating wire, heating wire heating power makes metal derby melt；Elevating lever rises afterwards, and casting mold entrance earthenware is interior and makes parallel pole and temperature thermocouple insert melt, and the pulse power passes through parallel pole and metal bath applies the process of pulse current liquid surface fluctuation；During pulse current liquid surface fluctuation applies, temperature thermocouple constantly sends the temperature information of melt internal monitoring point to Temperature-collection Recorder, Temperature-collection Recorder is successively recorded in the temperature information of the internal test point of metal bath in solidifying microlite by impulse current liquid surface disturbance technique, and draws the thermal history curve of metal bath.
The preferred running parameter of the above-mentioned pulse power is: peak point current is 10-5000A, and pulse width is 5 μ s-50ms, and acting frequency is 0.02-1KHz.
The quantity of above-mentioned pulley is favorably at least three, and preferably both with brakes.
The rising or falling speed of above-mentioned slide is preferably 0.5-32cm/s, and preferably continuously adjustabe.
Adiabator overcoat is preferably wrapped up outside above-mentioned heating wire.
Above-mentioned casting mold is preferably with metal mold, graphite crucible, ceramic crucible or sand mold.
Above-mentioned casting mold fixed system is preferably with rustless steel, copper, aluminium oxide or graphite.
The height of above-mentioned earthenware is preferably 5-50cm, and thickness is preferably 0.5-5cm, and diameter is preferably 0.5-30cm.
The present invention compared with prior art, has following obvious prominent substantive distinguishing features and remarkable advantage: advantages of the present invention is as follows:
(1) the invention provides the device of Thermal History of Melts curve in a kind of pulsed current measurement liquid surface fluctuation solidifying fine crystal technique, eliminate cast step, avoiding comes out of the stove due to molten metal in every time experiment loses heat in casting process, and cast is difficult to the mode of liquid metal filling that holding is consistent and the deviation of melt internal temperature that causes.Thus record in pulse current liquid surface fluctuation technique the thermal history curve within melt more accurately.
(2) device provided by the present invention, avoid the chilling action that molten metal is produced by casting mold, and this time difference of the most just inserting of thermocouple and the chilling action of thermocouple and the melt internal temperature deviation that causes, overcome thermal history curve error this shortcoming relatively big that conventional measurement warming therapy records, thus record pulse current liquid surface fluctuation more accurately and process the thermal history curve of lower metal bath.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram of Thermal History of Melts curve in a kind of pulsed current measurement liquid surface fluctuation solidifying fine crystal technique.
In figure: 1. top board, 2. heating wire, 3. adiabator overcoat, 4. temperature-control heat couple, 5. fixed plate, 6. guide rail, 7. controller, 8. plug, 9. earthenware, 10. parallel pole, 11. fixed systems, 12. temperature thermocouples, 13. Temperature-collection Recorders, 14. pulse powers, 15. casting molds, 16. metal baths, 17. casting mold fixed systems, 18. elevating levers, 19. nut seats, 20. slides, 21. screw mandrels, 22. motor, 23. pulleys.
Fig. 2 is to use the pulse current liquid surface fluctuation measured by this device to process the thermal history curve of different depth 2 on lower melt axis.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment: pulsed current measurement liquid surface fluctuation processes the thermal history curve of different depth 2 on lower melt axis.
nullApparatus of the present invention include as shown in Figure 1: casting mold 15、Casting mold fixed system 17、Elevating lever 18、Slide 20、Guide rail 6、Screw mandrel 21、Nut seat 19、Motor 22、Earthenware 9、Parallel pole 10、Fixed system 11 and pulley 23，Earthenware 9 is positioned on top board 1，Described parallel pole 10 is fixed by fixed system 11，It is placed on earthenware 9，The upper end of described screw mandrel 21 is connected in fixed plate 5，And it is free to rotate，The lower end of described screw mandrel 21 and the driven member of motor 22 connect，Guide rail 6、Elevating lever 18 and screw mandrel 21 through slide 20 and are generally aligned in the same plane，Nut seat 19 it is fixed with on slide 20，Nut seat 19 and screw mandrel 21 engage each other，Lower end and the slide 20 of elevating lever 18 fix，Upper end and the casting mold fixed system 17 of elevating lever 18 fix，The casting mold 15 filling metal bath 16 is positioned in casting mold fixed system 17，Elevating lever 18 is through the hole at fixed plate 5 center，Top board 1 center burrows and is easy to casting mold 15 and passes，When motor 22 control screw mandrel 21 rotate time，Nut seat 19 i.e. rises or falls along guide rail 6 with slide 20，Make the casting mold 15 filling metal bath 16 freely up and down can shuttle back and forth in heating wire 2 and earthenware 9，Described pulley 23 is fixed under package unit base plate.The pulse power 14 connects parallel pole 10, and heating wire 2 connects 220v alternating current via plug 8 again by controller 7；The parameter of the pulse power 14 is: peak point current is 10-5000A, and pulse width is 5 μ s-50ms, and acting frequency is 0.02-1KHz.Controller 7 connects heating wire 2 and its internal temperature-control heat couple 4 of embedment, can detect and control the temperature of heating wire 2 in real time；And controller 7 connects motor 22, it is possible to control motor 22 rotating speed, thus adjust slide 20 rising or falling speed.Temperature test is analyzed system and is made up of temperature thermocouple 12, Temperature-collection Recorder 13 and fixed system 11, described temperature thermocouple 12 is fixed on fixed system 11, and its signal output part is connected with the signal receiving end of described Temperature-collection Recorder 13, when parallel pole 10 applies the process of pulse current liquid surface fluctuation to metal bath 16, described Temperature-collection Recorder 13 monitors the measured temperature of the internal test point of metal bath 16 to be measured, and output temperature metrical information in real time.
The parallel pole material used is rustless steel, the adiabator overcoat of parcel heating wire is asbestos, thickness is 30cm, and earthenware height is 20cm, and thickness is 3cm, a diameter of 25cm, casting mold select graphite crucible, specification is Φ 110 × Φ 70 × 105, pulse power parameters be peak point current be 10-5000A, pulse width is 5 μ s-50ms, and acting frequency is 0.02-1KHz.
Utilizing the present invention and special purpose device thereof, complete the experiment done for fine aluminium, its experimental conditions and result are described below:
null805 grams of fine aluminium blocks are inserted in graphite crucible，Operation controller makes elevating lever be raised to earthenware upper end，Remove fixed system，Graphite crucible is placed on casting mold fixed system，Control graphite crucible to drop to inside heating wire，And fixed system (being above fixed with parallel pole and temperature thermocouple) is put back on earthenware，Operation controller，Set heating schedule，By 220V alternating current, heating wire is imported alternating current，After 40 minutes, heating wire arrives 690 DEG C and is incubated 20 minutes，Guarantee that the aluminium block fusing in graphite crucible and the temperature of melt and heating wire are suitable，Operation controller makes the predetermined altitude that graphite crucible rises in earthenware with the speed of 10cm/s afterwards，(two temperature thermocouples are in melt axial location to make the parallel pole being fixed on fixed system and two temperature thermocouples insert among melt，And thermometric termination distance melt liquid level 3cm and 5cm respectively).And by the pulse power to parallel pole import parameter be 10KiHz, 10hiA, 40biK in μ s(this patenti、hi、biIt is device parameter, do not change with the change of experiment condition) pulse current, thus metal bath is implemented pulse current liquid surface fluctuation and processes, obtain the melt axis degree of depth by Temperature-collection Recorder and be respectively temperature and the real-time change thereof of 2 of 3cm and 5cm, record pulse current liquid surface fluctuation more accurately and reliably and process the thermal history curve of different depth 2 on lower melt axis, as shown in Figure 2.
Claims (10)
- null1. the device of Thermal History of Melts curve in a pulsed current measurement liquid surface fluctuation solidifying fine crystal technique，Including: casting mold (15)、Casting mold fixed system (17)、Elevating lever (18)、Slide (20)、Guide rail (6-1、6-2)、Screw mandrel (21)、Nut seat (19)、Motor (22)、Earthenware (9)、Parallel pole (10)、Fixed system (11) and pulley (23)，It is characterized in that，Described earthenware (9) is positioned on top board (1)，Described parallel pole (10) is fixed by fixed system (11)，It is placed on earthenware (9)，The upper end of described screw mandrel (21) is connected in fixed plate (5)，And it is free to rotate，The lower end of described screw mandrel (21) and the driven member of motor (22) connect，Guide rail (6-1、6-2)、Elevating lever (18) and screw mandrel (21) through slide (20) and are generally aligned in the same plane，Nut seat (19) it is fixed with on slide (20)，Nut seat (19) and screw mandrel (21) engage each other，Lower end and the slide (20) of elevating lever (18) fix，Upper end and the casting mold fixed system (17) of elevating lever (18) fix，The casting mold (15) filling metal bath (16) is positioned in casting mold fixed system (17)，Elevating lever (18) is through the hole at fixed plate (5) center，Top board (1) center burrows and is easy to casting mold (15) and passes，When motor (22) controls screw mandrel (21) rotation，Nut seat (19) i.e. with slide (20) along two guide rail (6-1、6-2) rise or fall，Make the casting mold (15) filling metal bath (16) freely up and down can shuttle back and forth in heating wire (2) and earthenware (9)，Described pulley (23) is fixed under package unit base plate.
- The device of Thermal History of Melts curve in pulsed current measurement liquid surface fluctuation solidifying fine crystal technique the most according to claim 1, it is characterized in that, the pulse power (14) connects parallel pole (10), and heating wire (2) connects 220v alternating current via plug (8) again by controller (7)；The parameter of the pulse power (14) is: peak point current is 10-5000A, and pulse width is 5 μ s-50ms, and acting frequency is 0.02-1KHz.
- The device of Thermal History of Melts curve in pulsed current measurement liquid surface fluctuation solidifying fine crystal technique the most according to claim 2, it is characterized in that, controller (7) connects heating wire (2) and its internal temperature-control heat couple (4) of embedment, can detect and control the temperature of heating wire (2) in real time；And controller (7) connects motor (22), it is possible to control motor (22) rotating speed, thus adjust slide (20) rising or falling speed.
- 4. according to the device of Thermal History of Melts curve in the pulsed current measurement liquid surface fluctuation solidifying fine crystal technique described in any one in claims 1 to 3, it is characterized in that, temperature test analyzes system by temperature thermocouple (12), Temperature-collection Recorder (13) and fixed system (11) are constituted, described temperature thermocouple (12) is fixed on fixed system (11), and its signal output part is connected with the signal receiving end of described Temperature-collection Recorder (13), when parallel pole (10) applies the process of pulse current liquid surface fluctuation to metal bath (16), the measured temperature of the internal test point of described Temperature-collection Recorder (13) metal bath (16) that monitoring is to be measured in real time, and output temperature metrical information.
- 5. according to the device of Thermal History of Melts curve in the pulsed current measurement liquid surface fluctuation solidifying fine crystal technique described in any one in claims 1 to 3, it is characterised in that the quantity of described pulley (23) is at least three, and all with brakes.
- 6. according to the device of Thermal History of Melts curve in the pulsed current measurement liquid surface fluctuation solidifying fine crystal technique described in any one in claims 1 to 3, it is characterised in that the rising or falling speed of described slide (20) is 0.5-32cm/s, and continuously adjustabe.
- 7. according to the device of Thermal History of Melts curve in the pulsed current measurement liquid surface fluctuation solidifying fine crystal technique described in any one in claims 1 to 3, it is characterised in that described heating wire (2) outer wrap adiabator overcoat (3).
- 8. according to the device of Thermal History of Melts curve in the pulsed current measurement liquid surface fluctuation solidifying fine crystal technique described in any one in claims 1 to 3, it is characterised in that described casting mold (15) uses metal mold, graphite crucible, ceramic crucible or sand mold.
- 9. according to the device of Thermal History of Melts curve in the pulsed current measurement liquid surface fluctuation solidifying fine crystal technique described in any one in claims 1 to 3, it is characterised in that described casting mold fixed system (17) uses rustless steel, copper, aluminium oxide or graphite.
- 10. according to the device of Thermal History of Melts curve in the pulsed current measurement liquid surface fluctuation solidifying fine crystal technique described in any one in claims 1 to 3, it is characterised in that the height of described earthenware (9) is 5-50cm, and thickness is 0.5-5cm, a diameter of 0.5-30cm.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0712656A (en) * | 1993-04-12 | 1995-01-17 | Rockwell Internatl Corp | Device for measuring temperature of work and method for obtaining heat parameter |
| CN1820189A (en) * | 2003-07-09 | 2006-08-16 | 贺利氏电子耐特国际股份公司 | Method and device for measuring a melt cooling curve |
| CN103586442A (en) * | 2013-11-20 | 2014-02-19 | 上海大学 | Device capable of continuously measuring temperature of metal melt in pulse magnetic oscillation processing technology |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0712656A (en) * | 1993-04-12 | 1995-01-17 | Rockwell Internatl Corp | Device for measuring temperature of work and method for obtaining heat parameter |
| CN1820189A (en) * | 2003-07-09 | 2006-08-16 | 贺利氏电子耐特国际股份公司 | Method and device for measuring a melt cooling curve |
| CN103586442A (en) * | 2013-11-20 | 2014-02-19 | 上海大学 | Device capable of continuously measuring temperature of metal melt in pulse magnetic oscillation processing technology |
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