CN204287055U - The device of a kind of dynamic observation analog electrical slag reflow process molten drop behavior - Google Patents
The device of a kind of dynamic observation analog electrical slag reflow process molten drop behavior Download PDFInfo
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- CN204287055U CN204287055U CN201420663453.8U CN201420663453U CN204287055U CN 204287055 U CN204287055 U CN 204287055U CN 201420663453 U CN201420663453 U CN 201420663453U CN 204287055 U CN204287055 U CN 204287055U
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Abstract
A device for dynamic observation analog electrical slag reflow process molten drop behavior, belongs to metallurgical technology field, comprises quartz beaker, insulating support, pressure regulator, infrared thermography and high-speed camera; Quartz beaker and rule are positioned on platform; Entablature hangs fixed pulley, and Wood's metal pole is suspended on rope or dynamic crossbeam; Wood's metal pole is connected with pressure regulator, and bottom is inserted in conducting solution; Infrared thermography is relative with Wood's metal pole bottom with high-speed camera.Device of the present utility model clearly can be observed electrode melting end molten drop in detail and be formed and the change of its appearance and size of drippage process.
Description
Technical field
The utility model belongs to metallurgical technology field, the device of particularly a kind of dynamic observation analog electrical slag reflow process molten drop behavior.
Background technology
In esr process, the Surface Renewal that the formation of electrode melting end molten drop and drippage behavior, the change of molten drop appearance and size etc. not only affect molten drop is also closely related with the delivered heat of slag gold (drop) interface, and then affect the removal of impurity element in the slag gold physical-chemical reaction at interface and metal drop, to the quality of electroslag ingot, composition and degree of purity, there is material impact.But, under industrial practice condition, because melting system is in high temperature, opaque state and have the existence of water mold, direct observation electrode end molten drop is formed and drippage behavior seems unlikely, therefore, use transparent melting system come physical simulation esr process seem necessary also highly significant.
Document is had to point out, such as the physical property such as viscosity, density is similar to molten iron for Wood's metal, certain density NaCl solution then has the conductivity similar with electroslag remelting slag, therefore can be used to set up transparent melting system and carry out physical simulation to esr process.
Document " arcing events in esr process in slag bath " discloses a kind of electroslag remelting oscillography according to resembling wiring diagram, respectively with Wood's metal, NaCl solution and glass beaker replace esr process consutrode, slag and crystallizer, the change of electric current and sound by oscillography photographic recorder, find the oscillogram of its electric current and sound, having similar feature with the esr process electric current adopting similar installation to carry out and sound oscillogram (is consutrode with bearing quality steel respectively, steel crystalliser and corresponding composition slag), both explanations process has certain similarity.But, due to electrode melting end molten drop formed and drippage process very of short duration, the device that the method provides cannot more clearly be formed molten drop in detail and its appearance and size of drippage process and bath temperature are dynamically observed.
Document " The role played by the electric current on metal droplet formation in the ESR process " then adopts similar installation, consutrode, slag and crystallizer is replaced respectively with Wood's metal, NaCl solution and glass beaker, simulate esr process, the distance maintained between consutrode (Wood's metal rod) and another pole (Mo ring) by corresponding control system is definite value, and the method calculates the average weight of each molten drop by recording total molten drop drippage number and total melted alloy weight in certain time period; But, cause due to Wood's metal and the larger density difference of NaCl solution that drippage process is very of short duration, droplet shape is changeful, therefore by document generator system equally cannot clear in detail observe molten drop formed and drippage process dynamic change behavior, cannot and droplet size size and temperature field of molten pool be observed.
Summary of the invention
The problems referred to above of behavior and the existence of slag bath Temperature Distribution technology formed, drip for existing simulation esr process observation molten drop, the utility model provides a kind of device and method of dynamic observation analog electrical slag reflow process, Wood's metal pole, NaCl solution and quartz beaker is adopted to replace consutrode, slag and crystallizer respectively, increase melting speed control system, obtain dynamic image by high-speed camera and infrared thermography, realize that molten drop is formed, the observation of drippage behavior and slag bath Temperature Distribution controls.
The device of dynamic observation analog electrical slag reflow process molten drop of the present utility model behavior comprises quartz beaker, insulating support, pressure regulator, infrared thermography and high-speed camera with entablature and sill; Quartz beaker and the rule for measuring the consutrode insertion conducting solution degree of depth are positioned at platform; Entablature is hung with fixed pulley, and the Wood's metal pole as consutrode is suspended on the rope of fixed pulley, or to be suspended on dynamic crossbeam and dynamic crossbeam is suspended on the rope of fixed pulley; Wood's metal pole is connected with pressure regulator by the wire inlayed in it simultaneously, and quartz beaker inside is inserted as in the conducting solution of slag in the bottom of Wood's metal pole; It is outer and relative with Wood's metal pole bottom that infrared thermography and high-speed camera are placed on quartz beaker.
In said apparatus, the Wood's metal pole as consutrode is one or paired two groups; When Wood's metal pole is one, Wood's metal pole is suspended on the rope of fixed pulley; When Wood's metal pole is paired two groups, Wood's metal pole is suspended on dynamic crossbeam.
In said apparatus, the Wood's metal pole as consutrode is one or paired two groups; When Wood's metal pole is one, Wood's metal pole is connected with a pole of pressure regulator by wire, and quartz beaker inside is provided with molybdenum sheet and is connected with another pole of pressure regulator by wire; When Wood's metal pole is paired two groups, often organizes Wood's metal pole and be connected with the two poles of the earth of pressure regulator respectively by wire.
In said apparatus, sill is fixed with thermometer, thermometer inserts in the conducting solution of quartz beaker inside.
In said apparatus, the central part on the top of Wood's metal pole is inlaid with split pin, and Wood's metal pole is linked together by the rope of split pin and fixed pulley or dynamic crossbeam.
In said apparatus, digital display voltmeter is in parallel with pressure regulator, and the wire that pressure regulator is connected with Wood's metal pole is provided with digital display ammeter.
Above-mentioned pressure regulator is contact automatic coupling voltage regulator.
Above-mentioned infrared thermography is connected with a computing machine with high-speed camera simultaneously.
Said apparatus is adopted dynamically to observe the method for analog electrical slag reflow process molten drop behavior carry out according to the following steps:
1, by fixed pulley and rule, the degree of depth that Wood's metal pole inserts conducting solution is regulated; Electric current is applied to Wood's metal pole and conducting solution by pressure regulator; Wherein when there being a Wood's metal pole in quartz beaker, Wood's metal pole, conducting solution, molybdenum sheet and pressure regulator form power circuit; When there being two groups of paired Wood's metal poles in quartz beaker, two groups of Wood's metal poles, conducting solution and pressure regulators form power circuit; Relation wherein between the size of Wood's metal pole and the size of quartz beaker is arranged according to the requirement of diameter relative cylinder charge in esr process;
2, in applying current course, Wood's metal pole bottom starts to form molten drop and then start drippage;
3, when molten drop is formed and drip process stabilization, carry out in real time dynamically shooting by the drippage process of high-speed camera to molten drop, record is carried out to the electric current in power circuit and change in voltage simultaneously; Intercept the molten drop of electrode end drippage with sample spoon, then weigh;
4, by the slag bath Temperature Distribution in the formation of infrared thermography real-time monitored molten drop and drippage process, and contrast with thermometer measure result.
In said method, along with the bottom of Wood's metal pole is melted gradually, according to the registration of rule, regulate bottom rail depth of beam by fixed pulley, and then regulate Wood's metal pole to insert the degree of depth of conducting solution, make the burn-off rate of Wood's metal pole constant.
Above-mentioned diameter relative cylinder charge is Wood's metal pole and the diameter ratio of quartz beaker, simulates the diameter ratio between consutrode and crystallizer.
In said method, when there being a Wood's metal pole in quartz beaker, research different-diameter relative cylinder charge, electrode insert the conducting solution degree of depth and melting voltage process parameter emphatically; When there being two groups of paired Wood's metal poles in quartz beaker, under emphatically inserting the conducting solution degree of depth and melting voltage conditions to electrode separation, electrode, electrode melting end molten drop is formed, the impact of drippage state and slag bath Temperature Distribution is carried out observing and analyzing.
In said method, the frame per second of the high-speed camera of employing is that 200 frames are per second;
In said method, molten drop is formed and drippage process stabilization refers to: when melting voltage, diameter relative cylinder charge one timing, slowly continuously regulate electrode to insert the conducting solution degree of depth, in molten drop drippage process, in power circuit, current value fluctuation keeps more than 10min in ± 10% scope.
In said method, employing conducting solution is NaCl solution, and concentration is 0.1221 mol/L, and conductivity is 1.47 Sm
-1.
The utility model be a kind of utilize transparent melting system to realize the physical simulation of esr process and possess that online dynamically observation esr process molten drop is formed, the device of drippage behavior and slag bath district Temperature Distribution and realize the method that this kind of observation controls; To adopt the conductivity of NaCl solution and Electroslag Process to commonly use slag system conductivity close, by utilizing, high-speed camera is formed electrode end molten drop, drippage behavior and corresponding loop current, change in voltage shooting, not only clearly can observe electrode melting end molten drop in detail to be formed and the change of its appearance and size of drippage process, also will be conducive to the corresponding relation setting up this process loop electrical quantity and molten drop drip phenomenon simultaneously; By the online real-time monitored of infrared thermography to the slag bath district Temperature Distribution of electrode melting end molten drop drippage process.
Because electrode end molten drop is formed, drips through slag bath and enter slag contact area in the processes such as metal pool and can produce certain influence to the reaction between slag steel, the utility model passes through different-diameter relative cylinder charge, melting voltage, electrode inserts droplet size, the drop frequency under conducting solution depth conditions and slag bath temperature field is observed, record, effectively can obtaining as reacting the test parameters providing sound response dynamic conditions between slag steel, while intensified metallurgy reaction, also will effectively promote the eliminating of objectionable impurities element and non-metallic inclusion; In addition, because the distribution in slag bath temperature field will greatly affect the Temperature Distribution of metal pool; Therefore, the utility model is observed the slag bath temperature field under Different factor condition and is obtained being conducive to us the test parameters being conducive to remelted ingot acquisition well-crystallized tissue; In a word, by strong reference can be provided for actual electrical slag remelting commercial production to the observation of molten drop end molten drop behavior in the utility model.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram of the dynamic observation analog electrical slag reflow process molten drop behavior of the utility model embodiment 1;
Fig. 2 is the apparatus structure schematic diagram of the dynamic observation analog electrical slag reflow process molten drop behavior of the utility model embodiment 2;
In figure, 1, fixed pulley, 2, insulating support, 3, thermometer, 4, quartz beaker, 5, infrared thermography, 6, computing machine, 7, brace table, 8, cooled copper, 9, conducting solution, 10, high-speed camera, 11, rule, 12, digital display ammeter, 13, pressure regulator, 14, digital display voltmeter, 15, molybdenum sheet, 16, single consutrode, the 17, first consutrode, the 18, second consutrode, 19, split pin, 20, sill, 21, entablature, 22, dynamic crossbeam;
Fig. 3 is the device partial structurtes schematic diagram of the dynamic observation analog electrical slag reflow process molten drop behavior of the utility model embodiment 2;
Fig. 4 is that the molten drop observed by high-speed camera in the utility model embodiment 1 drips process schematic; In figure, a to g is that molten drop drips each step;
Fig. 5 is by thermo parameters method schematic diagram that infrared thermography is observed in the utility model embodiment 1; In figure, the temperature of T1, T2, T3, T4 is respectively 85 DEG C, 80 DEG C, 77 DEG C, 75 DEG C
Fig. 6 is by thermo parameters method schematic diagram that infrared thermography is observed in the utility model embodiment 2; In figure, the temperature of T5, T6, T7, T8, T9 is respectively 87 DEG C, 83 DEG C, 80 DEG C, 76 DEG C, 73 DEG C.
Fig. 7 is the change curve of equivalent diameter with relative cylinder charge of molten drop in the utility model embodiment;
Fig. 8 is that in the utility model embodiment, molten drop drips the heavy change curve with current density.
Embodiment
The high-speed camera model adopted in the utility model embodiment is XC-HR50, adopts frame per second to be that 200 frames are per second.
The contact automatic coupling voltage regulator model adopted in the utility model embodiment is the western TDGC2-3KVA series voltage regulator of moral power.
In the utility model embodiment, infrared thermoviewer model is FLIR A315.
In the utility model embodiment when Wood's metal pole is paired two groups, the split pin of Wood's metal pole is connected with soft cord, and soft cord and dynamic crossbeam link together; Described soft cord selects cotton cord or plastic ties.
The diameter relative cylinder charge arranged in the utility model embodiment is 0.50 ~ 0.81.
Bottom quartz beaker, cooled copper is placed to accelerate metal pool cooling, for simulating end water tank in the utility model embodiment.
Adopt conducting solution to be NaCl solution in the utility model embodiment, concentration is 0.1221 mol/L, and conductivity is 1.47 Sm
-1.
Utilize sample spoon to intercept the molten drop of self-electrode end drippage in the utility model embodiment, and utilize electronic balance weighing to go out weight, drip heavily as molten drop.
After being weighed by the molten drop that the electrode end of intercepting drips in the utility model embodiment, calculate volume according to volume density, the diameter calculated according to the corresponding globulate of its volume is as equivalent diameter.
In the utility model embodiment, Wood's metal melted and be cast into pole as consutrode, split pin be embedded in Wood's metal pole end face center and keep split pin axially parallel with Wood's metal pole.
Embodiment 1
Dynamic observation analog electrical slag reflow process molten drop behavior apparatus structure as shown in Figure 1, comprises quartz beaker 4, insulating support 2, pressure regulator 13, infrared thermography 5 and high-speed camera 10 with entablature and sill; Quartz beaker 4 and rule 11 are positioned on platform; Entablature is hung with fixed pulley 1, comprises fixed pulley and rope, the Wood's metal pole as single consutrode 16 is suspended on the rope of fixed pulley; Wood's metal pole is connected with pressure regulator 13 by wire simultaneously, and quartz beaker 4 inside is inserted as in the conducting solution 9 of slag in the bottom of Wood's metal pole; It is outer and relative with Wood's metal pole bottom that infrared thermography 5 and high-speed camera 10 are placed on quartz beaker 4;
Wood's metal pole is connected with a pole of pressure regulator 13 by wire, and quartz beaker 4 inside is provided with molybdenum sheet 15 and is connected with another pole of pressure regulator 13 by wire;
Sill is fixed with thermometer 3, thermometer 3 inserts in the conducting solution 9 of quartz beaker 4 inside;
The central part on the top of Wood's metal pole is inlaid with split pin, and Wood's metal pole is linked together by the rope of split pin and fixed pulley;
Digital display voltmeter 14 is in parallel with pressure regulator 13, and the wire that pressure regulator 13 is connected with Wood's metal pole is provided with digital display ammeter 12;
Infrared thermography 5 is connected with computing machine 6 with high-speed camera 10 simultaneously;
Cooled copper 8 and brace table 7 is provided with between quartz beaker and platform;
Dynamic observation analog electrical slag reflow process molten drop behavioral approach adopts said apparatus, carries out according to the following steps:
1, by fixed pulley and rule, the degree of depth that Wood's metal pole inserts conducting solution is regulated; Electric current is applied to Wood's metal pole and conducting solution by pressure regulator; Wood's metal pole, conducting solution, molybdenum sheet and pressure regulator form power circuit; Relation wherein between the size of Wood's metal pole and the size of quartz beaker is arranged according to the requirement of diameter relative cylinder charge in esr process;
2, in applying current course, Wood's metal pole bottom starts to form molten drop and then start drippage;
3, when molten drop is formed and drip process stabilization, carry out in real time dynamically shooting by the drippage process of high-speed camera to molten drop, record is carried out to the electric current in power circuit and change in voltage simultaneously; Intercept the molten drop of electrode end drippage with sample spoon, then weigh;
4, by the slag bath Temperature Distribution in the formation of infrared thermography real-time monitored molten drop and drippage process, and contrast with thermometer measure result;
Along with the bottom of Wood's metal pole is melted gradually, according to the registration of rule, regulate bottom rail depth of beam by fixed pulley, and then regulate Wood's metal pole to insert the degree of depth of conducting solution, make the burn-off rate of Wood's metal pole constant;
As stated above, test under relative cylinder charge 0.50 ~ 0.81 condition respectively, as shown in Figure 4, thermo parameters method as shown in Figure 5 for drippage process, wherein molten drop equivalent diameter with relative cylinder charge change curve as shown in Figure 7, molten drop drips the heavy change curve with current density as shown in Figure 8;
As seen from the figure, along with the increase of relative cylinder charge, electrode tip pattern gradually by taper (parabolic type) to plane transition, this be with the Warm status of electrode and slag bath flow field closely-related; When relative cylinder charge is less, because electrode surface is more by the radiations heat energy of the top of the slag, and due to the current density of kelvin effect electrode surface very large, it is cause electrode tip conically main cause that slag bath thermal convection is washed away; Along with the increase of relative cylinder charge, electrode surface obviously reduces by the radiant heat flux of the top of the slag, and the kelvin effect of alternating current weakens, and the Temperature Distribution of slag bath is tending towards even; Electromagnetic agitation (stirring slag bath motion because energising reason produces electromagnetic force in slag bath district in esr process) weakens the souring of electrode end, make electrode tip be tending towards homogenising along the Temperature Distribution of radial direction, result in Electrode form is plane even concave surface;
Along with the increase of relative cylinder charge, the equivalent diameter of molten drop reduces trend afterwards in first increasing, and obtains maximal value when relative cylinder charge is 0.60; And in fusion process, when current density is less than 2792.38 A/m
2time, molten drop drips heavy reduction rapidly along with the increase of current density, when current density is less than 2792.38 A/m
2time, molten drop drips heavy then along with the increase of current density raises slightly, and this is consistent with the result of study of Gammal etc.
Embodiment 2
As shown in Figure 2, major part is identical with embodiment 1, and difference is for the apparatus structure of dynamic observation analog electrical slag reflow process molten drop behavior:
Partial structurtes as shown in Figure 3;
Wood's metal pole as consutrode is divided into the first consutrode and the second consutrode, to be suspended on dynamic crossbeam and dynamic crossbeam is suspended on the rope of fixed pulley;
First consutrode and the second consutrode symmetry are suspended on dynamic crossbeam, and each Wood's metal pole (consutrode) is connected with the two poles of the earth of pressure regulator respectively by wire;
Each Wood's metal pole is linked together by split pin and dynamic crossbeam;
The method of dynamic observation analog electrical slag reflow process molten drop behavior adopts said apparatus, carries out according to the following steps:
1, by fixed pulley and rule, the degree of depth that Wood's metal pole inserts conducting solution is regulated; Electric current is applied to Wood's metal pole and conducting solution by pressure regulator; Two groups of Wood's metal poles, conducting solution and pressure regulators form power circuit; Relation wherein between the size of Wood's metal pole and the size of quartz beaker is arranged according to the requirement of diameter relative cylinder charge in esr process;
2, in applying current course, Wood's metal pole bottom starts to form molten drop and then start drippage;
3, when molten drop is formed and drip process stabilization, carry out in real time dynamically shooting by the drippage process of high-speed camera to molten drop, record is carried out to the electric current in power circuit and change in voltage simultaneously; Intercept the molten drop of electrode end drippage with sample spoon, then weigh;
4, by the slag bath Temperature Distribution in the formation of infrared thermography real-time monitored molten drop and drippage process, and contrast with thermometer measure result;
Along with the bottom of Wood's metal pole is melted gradually, according to the registration of rule, regulate bottom rail depth of beam by fixed pulley, and then regulate Wood's metal pole to insert the degree of depth of conducting solution, make the burn-off rate of Wood's metal pole constant;
Molten drop drippage process is identical with embodiment 1, and thermo parameters method as shown in Figure 6.
Claims (6)
1. a device for dynamically observation analog electrical slag reflow process molten drop behavior, is characterized in that comprising quartz beaker, insulating support, pressure regulator, infrared thermography and high-speed camera with entablature and sill; Quartz beaker and the rule for measuring the consutrode insertion conducting solution degree of depth are positioned at platform; Entablature is hung with fixed pulley, and the Wood's metal pole as consutrode is suspended on the rope of fixed pulley, or to be suspended on dynamic crossbeam and dynamic crossbeam is suspended on the rope of fixed pulley; Wood's metal pole is connected with pressure regulator by the wire inlayed in it simultaneously, and quartz beaker inside is inserted as in the conducting solution of slag in the bottom of Wood's metal pole; It is outer and relative with Wood's metal pole bottom that infrared thermography and high-speed camera are placed on quartz beaker.
2. the device of a kind of dynamic observation analog electrical slag reflow process molten drop according to claim 1 behavior, is characterized in that the described Wood's metal pole as consutrode is one or paired two groups; When Wood's metal pole is one, Wood's metal pole is suspended on the rope of fixed pulley; When Wood's metal pole is paired two groups, Wood's metal pole is suspended on dynamic crossbeam.
3. the device of a kind of dynamic observation analog electrical slag reflow process molten drop according to claim 1 behavior, is characterized in that the described Wood's metal pole as consutrode is one or paired two groups; When Wood's metal pole is one, Wood's metal pole is connected with a pole of pressure regulator by wire, and quartz beaker inside is provided with molybdenum sheet and is connected with another pole of pressure regulator by wire; When Wood's metal pole is paired two groups, often organizes Wood's metal pole and be connected with the two poles of the earth of pressure regulator respectively by wire.
4. the device of a kind of dynamic observation analog electrical slag reflow process molten drop according to claim 1 behavior, is characterized in that described sill is fixed with thermometer, and thermometer inserts in the conducting solution of quartz beaker inside.
5. the device of a kind of dynamic observation analog electrical slag reflow process molten drop according to claim 1 behavior, it is characterized in that the central part on the top of described Wood's metal pole is inlaid with split pin, Wood's metal pole is linked together by the rope of split pin and fixed pulley or dynamic crossbeam.
6. the device of a kind of dynamic observation analog electrical slag reflow process molten drop according to claim 1 behavior, it is characterized in that described pressure regulator is in parallel with digital display voltmeter, the wire that pressure regulator is connected with Wood's metal pole is provided with digital display ammeter.
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| CN201420663453.8U CN204287055U (en) | 2014-11-10 | 2014-11-10 | The device of a kind of dynamic observation analog electrical slag reflow process molten drop behavior |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330411A (en) * | 2014-11-10 | 2015-02-04 | 东北大学 | Device and method for dynamically observing and simulating behaviors of molten drops in electric slag remelting process |
| CN111044434A (en) * | 2019-12-31 | 2020-04-21 | 太原科技大学 | Simulation device and method for gas metal arc welding molten drop transition process |
-
2014
- 2014-11-10 CN CN201420663453.8U patent/CN204287055U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330411A (en) * | 2014-11-10 | 2015-02-04 | 东北大学 | Device and method for dynamically observing and simulating behaviors of molten drops in electric slag remelting process |
| CN104330411B (en) * | 2014-11-10 | 2017-05-10 | 东北大学 | Device and method for dynamically observing and simulating behaviors of molten drops in electric slag remelting process |
| CN111044434A (en) * | 2019-12-31 | 2020-04-21 | 太原科技大学 | Simulation device and method for gas metal arc welding molten drop transition process |
| CN111044434B (en) * | 2019-12-31 | 2022-02-15 | 太原科技大学 | Simulation device and method for gas metal arc welding molten drop transition process |
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