CN105483391B - Determine the device and method of technological parameter in the esr process of single supply double loop - Google Patents

Abstract

The invention provides a device and method for determining process parameters in the process of electroslag remelting with a single power source and double circuits. Conductive metal sheet of copper plate. The process steps of the method are: (1) configure the conductive solution according to the conductivity parameter range of the fluorine-containing slag system at 1600-1800°C, put it into a quartz beaker, and adjust the liquid level of the conductive solution; (2) adjust the conductivity of the simulated conductor The insertion depth of the metal sheet and the metal electrode in the conductive solution; (3) Turn on the power supply, adjust the voltage value of the voltage regulator to 10~36V, and generate two power circuits; (4) After the reading of the digital display voltmeter is stable, record Multiple sets of current readings of two digital display ammeters at a solution temperature of 50-80°C are used to obtain the total average value of the current distribution ratio.

Description

Device and method for determining process parameters in single-power supply double-loop electroslag remelting process

technical field

The invention belongs to the technical field of metallurgy, and in particular relates to a device and a method for determining process parameters in a single-power supply double-circuit electroslag remelting process.

Background technique

Electroslag remelting is widely used in the terminal smelting of various materials because of its less defects such as shrinkage cavity, porosity and macro segregation in the ingot produced, and it has the characteristics of uniform composition, compact structure and fine dispersion of inclusions. craft. The shape and depth of the electroslag remelting metal pool directly determine the solidification quality of the material. Generally, a "V"-shaped metal pool often leads to poor surface quality of the ingot, and the crystallization direction of the material is often radial crystallization, which has great influence on the quality of the material. The coagulation quality is unfavorable. Many researchers generally believe that the "U"-shaped molten metal pool is more beneficial to the control of the surface quality and internal quality of the ingot. However, the control of the molten metal pool in the electroslag remelting process is often affected by process parameters such as current, electrode insertion depth, and slag pool height.

If the current and voltage are too high, the temperature of the slag will increase, and the oxidation of the elements will increase; if the voltage is too high, the depth of the electrode buried in the slag pool will decrease, which will increase the oxidation of the electrode and increase the number of inclusions in the steel; a suitable current is conducive to the formation of a good Surface quality of the ingot, but if the current is too high, the voltage will be too low, and the electrode will be inserted too deep into the slag pool, causing the surface temperature of the slag pool to be too low, which is not conducive to the control of the surface quality.

Scholars Holly once pointed out that in order to obtain good surface quality of electroslag steel ingots, it is necessary for the molten metal pool to have a cylindrical section height of more than 10 mm. Since most of the current in the electroslag remelting process passes through the central area of the slag-gold interface in the slag pool, and the current is very small at the position where the slag-gold interface is close to the inner wall of the crystallizer, this will cause the Joule heat generation rate in this area It is very low, and the metal molten pool is in a "V" shape, so that the slag-gold interface is close to the inner wall of the crystallizer, and it is basically impossible to obtain a cylindrical section. In summary, if the process parameters of the traditional electroslag remelting process are set unreasonably, the height of the cylindrical section of the molten metal pool cannot be obtained. The reason is that in the traditional electroslag remelting process, the current is mainly concentrated under the consumable electrode, resulting in insufficient calorific value of the slag pool at the inner wall of the crystallizer at the slag-gold interface. Therefore, it is difficult to achieve good ingot surface quality and shallow metal molten pool at the same time.

The electroslag remelting process using a conductive crystallizer not only has the current loop of the traditional electroslag remelting system: transformer→consumable electrode→slag pool→metal molten pool→bottom water tank→transformer, but also has a circuit close to the mold side Current loop: transformer→conductive crystallizer→slag pool→metal molten pool→bottom water tank→transformer. The circuit power supply on the side of the conductive crystallizer provides a greater current density for the circumferential position of the slag-gold interface, which is conducive to the transfer of heat generated by the slag pool around the inner wall of the mold to the molten metal pool, thereby helping to obtain an ideal "U" shape. The molten metal pool is conducive to obtaining electroslag ingots with good crystallization quality.

The literature (Investigation of the implications of the current conductive moldtechnology with respect to the internal and surface quality of ESR ingots, Liquid Metal Processing and Casting 2011, 57-64.) proposed a method of smelting X12CrNiMoV steel using a dual-power supply and double-circuit conductive mold method, and pointed out that after smelting with a conductive crystallizer with dual power sources and dual circuits, the molten metal pool will form a "U" shape; the degree of segregation of elements will be reduced, and when the current distribution ratio is 1:1 and the melting rate is faster Below, the surface quality of the ingot is the best. However, the two power sources of the dual power source and the dual circuit are likely to interfere with each other during the processing process and affect the final implementation effect. The single power supply and double circuit can not only achieve the smelting effect of dual power supply and double circuit, but also only use a transformer for power supply, so it is beneficial to the transformation of the existing domestic electroslag furnace technology. However, after using single power supply and double circuit power supply, there will be a certain dependence on the current distribution of the two circuits and the process parameters of the total circuit. If the current distribution ratio is unreasonable, the surface quality and solidification quality of the smelted ingot will be poor. With proper current distribution, both the surface quality and the internal solidification quality of the ingot can be greatly improved. If a real electroslag furnace is used to explore this dependency, a lot of manpower and material resources will be wasted.

CN104330411 discloses a device for dynamically observing and simulating the droplet behavior in the electroslag remelting process. The device can simulate the droplet dripping process in the traditional single-power single-circuit electroslag remelting process, and does not consider the impact of the conductive crystallizer on the electroslag remelting process. The effect of the melting process is not considered, and the influence of the height of the conductive solution is not considered.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides a device and method for determining process parameters in the process of single-power supply double-circuit electroslag remelting. The device and method adopt physical simulation of the actual single-power supply double-circuit electroslag remelting production process The main process parameters such as slag pool height, electrode insertion depth, and current distribution ratio are determined to provide a favorable reference for the actual production process. Technical scheme of the present invention is as follows:

A device for determining process parameters in the process of electroslag remelting with a single power supply and double loops, including an insulating support, a quartz beaker, a voltage regulator, a metal electrode, a conductive metal sheet simulating a conductor, and a conductive metal sheet simulating a bottom copper plate; the insulating support There is a support platform on the top, the quartz beaker and the scale used to measure the height of the conductive solution and the depth of the metal electrode inserted into the conductive solution are located on the support platform; the upper part of the metal electrode is connected to one pole of the voltage regulator through a wire, and the lower part is immersed in the inside of the quartz beaker In the conductive solution; the conductive metal sheet of the simulated conductor is ring-shaped, fixed on the inner wall of the quartz beaker, and partially immersed in the conductive solution, and the part of the conductive metal sheet of the simulated conductor exposed to the conductive solution is passed through the wire and the voltage regulator. Connected to one pole of the voltage regulator; the conductive metal sheet simulating the bottom copper plate is set at the bottom of the quartz beaker, and connected to the other pole of the voltage regulator through a wire.

In the device, a thermometer is also provided, which is inserted into the conductive solution inside the quartz beaker.

In the device, a digital display voltmeter is also provided, and the digital display voltmeter is connected in parallel with the voltage regulator.

In the device, there are also two digital display ammeters, which are respectively located on the wire connecting the conductive metal sheet of the analog conductor and the voltage regulator and on the wire connecting the metal electrode and the voltage regulator.

In the device, the metal electrode and the conductive metal sheet simulating a conductor are connected to the same pole of the voltage regulator.

In the device, the relationship between the size of the metal electrode and the size of the quartz beaker is set according to the requirement of the diameter filling ratio in the electroslag remelting process.

In the device, the metal electrode is made of Wood's alloy or stainless steel, which is used to simulate the electrode.

In the device, the material of the conductive metal sheet is selected from metal materials that do not react with the conductive solution, including molybdenum sheet, copper sheet, nickel sheet, tin sheet and platinum sheet, which are used to simulate the conductor.

The voltage regulator is a contact type auto-coupling voltage regulator.

The method of using the device to determine the process parameters in the process of single-power double-circuit electroslag remelting is carried out according to the following process steps:

(1) Configure the conductive solution according to the conductivity parameter range of the fluorine-containing slag system at 1600~1800°C, put the conductive solution into a quartz beaker, and adjust the liquid level of the conductive solution to be 30~60mm;

(2) Adjust the insertion depth of the conductive metal sheet of the simulated conductor in the conductive solution to 5~20mm, and the insertion depth of the metal electrode in the conductive solution to 5~10mm;

(3) Turn on the power supply, adjust the voltage value of the voltage regulator at 10~36V, metal electrodes, conductive solution, conductive metal sheet and voltage regulator that simulate the bottom copper plate, and conductive metal sheets that simulate conductors, conductive solution, and simulate the bottom The conductive metal sheet of the copper plate and the voltage regulator form two energized circuits;

(4) After the reading of the digital display voltmeter is stable, record multiple sets of current readings of the two digital display ammeters at 50~80°C, and obtain the current distribution ratio of the double circuit at the corresponding temperature, and calculate the current distribution ratio overall average.

In the method, the conductive solution is sodium chloride solution or potassium chloride solution, and the concentration is 0.1221-0.4884mol/L.

In the method, the height of the slag pool of electroslag remelting is simulated by adjusting the liquid level height of the conductive solution in the quartz beaker.

In the method, the conductive solution is heated to different temperatures through the resistance of the conductive solution itself, so that the conductivity of the conductive solution matches the conductivity of the electroslag remelting high-temperature slag, and the power distribution of the double circuit is obtained.

In the method, according to the current distribution ratio obtained in step (4), the height of the conductive solution, the electrode filling ratio, and the depth of the conductive metal sheet simulating the conductor inserted into the conductive solution, the industrial electroslag remelting process is deduced at Under the premise of a certain filling ratio, other process parameters suitable for smelting in this crystallizer.

Beneficial effects of the present invention: the present invention utilizes a visualized miniature single-power supply double-loop electroslag remelting simulation system to carry out the current distribution ratio, electrode insertion depth, conductive solution height, and conductor insertion depth in the electroslag remelting process in industrial production. Exploration, and the sodium chloride or potassium chloride conductive solution used in the system of the present invention is similar to the conductivity parameter range of the fluorine-containing slag system at 1600~1800 ° C, and the simulation of the electroslag remelting smelting process in the laboratory range is realized, which can Effectively obtain smelting process parameters suitable for large-scale single-power double-circuit electroslag remelting.

Description of drawings

Fig. 1 is the structural representation of the device for determining the process parameters in the double-loop electroslag remelting process of the embodiment of the present invention 1; Wherein 1, insulating support, 2, crossbeam, 3 thermometer, 4, the molybdenum sheet of simulation conductor, 5. Quartz beaker, 6. Molybdenum sheet simulating the bottom copper plate, 7. Support platform, 8. Scale, 9. Conductive solution simulating slag, 10 and 11. Digital display ammeter, 12. Contact autovoltage regulator , 13. Digital voltmeter, 14. Wood metal electrode;

Fig. ₂ is the schematic circuit diagram of the device _of the present invention, wherein A1 and A2 represent the ammeter, V represents the voltmeter, and R represents the resistance.

detailed description

The model of the contact auto-coupling voltage regulator used in the embodiment of the present invention is Delixi TDGC2-3KVA series voltage regulator.

Example 1

A device for determining process parameters in the process of single-power double-circuit electroslag remelting, including an insulating support 1, a thermometer 3, a stone molybdenum sheet 4 simulating a conductor, a quartz beaker 5, a molybdenum sheet 6 simulating a bottom copper plate, and a digital display ammeter 10 and 11, contact-type autovoltage regulator 12, digital display voltmeter 13, and Wood metal electrode 14; insulating support 2 is provided with crossbeam 2 and support platform 7 for hanging metal electrodes; the diameter of quartz beaker 5 is 80mm, It and the scale 8 used to measure the height of the conductive solution and the depth of the metal electrode inserted into the conductive solution are located on the support platform 7; the thermometer 3 is inserted into the conductive solution inside the quartz beaker 5; the molybdenum sheet 4 of the simulated conductor is annular in shape and fixed on On the inner wall of the quartz beaker, and partially immersed in the conductive solution, the part of the molybdenum sheet 4 simulating the conductor exposed to the conductive solution is connected to one pole of the contact autovoltage regulator 12 through a wire; the molybdenum sheet 6 simulating the bottom copper plate It is arranged at the bottom of the quartz beaker 5 and is connected to the other pole of the contact autovoltage regulator 12 through a wire; the digital display ammeters 10 and 11 are respectively located at the places where the molybdenum sheet 4 of the analog conductor is connected to the contact autovoltage regulator 13 On the wire and on the wire connected between the Wood metal electrode 14 and the contact type auto-coupling voltage regulator 12; the digital display voltmeter 13 is connected in parallel with the contact type auto-coupling voltage regulator 12; One pole of the voltage regulator 12 is connected, the lower part is immersed in the conductive solution inside the quartz beaker 5, and the Wood metal electrode 14 and the molybdenum sheet 4 simulating a conductor are connected to the same pole of the contact autovoltage regulator 12.

In the above device, the filling ratio is set to 0.5.

The method of using the above-mentioned device to determine the process parameters in the process of single-power supply and double-circuit electroslag remelting is carried out according to the following process steps:

(1) Configure a sodium chloride solution with a concentration of 0.1221mol/L according to the conductivity parameter range of the fluorine-containing slag system at 1700°C, put the sodium chloride solution into a quartz beaker, and adjust the liquid level of the sodium chloride solution at 40mm;

(2) Adjust the insertion depth of the molybdenum sheet of the simulated conductor in the conductive solution to 20mm, and the insertion depth of the metal electrode in the conductive solution to 5mm, 7mm and 8.5mm respectively;

(3) Turn on the power supply, adjust the voltage value of the voltage regulator to 10V, the metal electrode, the conductive solution, the molybdenum sheet simulating the bottom copper plate and the voltage regulator, and the molybdenum sheet simulating the conductor, the conductive solution, and the molybdenum sheet simulating the bottom copper plate and the voltage regulator constitute two energization circuits;

(4) After the reading of the digital display voltmeter is stable, record the current display of two digital display ammeters at the same temperature at 50°C, 55°C, 60°C, 65°C, 70°C, 75°C and 80°C. number.

According to the current readings in step (4), the total average values of the current distribution ratios of the two circuits when the insertion depths of the metal electrodes in the conductive solution are 5mm, 7mm and 8.5mm are 1.205, 1.276 and 1.884 respectively. According to the current distribution ratio , the electrode filling ratio is 0.5, the height of the conductive solution is 40mm, and the molybdenum sheet of the simulated conductor is inserted into the conductive solution to a depth of 20mm, and then it can be deduced that the industrial electroslag remelting process is suitable for the premise that the diameter filling ratio of the crystallizer is 0.5 other process parameters.

Example 2

The device of this embodiment is the same as that of Embodiment 1, the difference is that: the conductive metal sheet is a nickel sheet, and the filling ratio is 0.6;

The method of using the above-mentioned device to determine the process parameters in the process of single-power supply and double-circuit electroslag remelting is carried out according to the following process steps:

(1) Configure a sodium chloride solution with a concentration of 0.1221mol/L according to the conductivity parameter range of the fluorine-containing slag system at 1700°C, put the sodium chloride solution into a quartz beaker, and adjust the liquid level of the sodium chloride solution at 40mm;

(2) Adjust the insertion depth of the nickel sheet of the simulated conductor in the conductive solution to 20mm, and the insertion depth of the metal electrode in the conductive solution to 5mm, 7mm and 8.5mm respectively;

(3) Turn on the power supply, adjust the voltage value of the voltage regulator at 10V, metal electrodes, conductive solution, nickel sheet simulating the bottom copper plate and voltage regulator, and nickel sheet simulating conductors, conductive solution, and nickel sheet simulating the bottom copper plate and the voltage regulator constitute two energization circuits;

(4) After the reading of the digital display voltmeter is stable, record the current display of two digital display ammeters at the same temperature at 50°C, 55°C, 60°C, 65°C, 70°C, 75°C and 80°C. number.

According to the current readings in step (4), the total average values of the current distribution ratios of the two circuits when the insertion depths of the metal electrodes in the conductive solution are 5mm, 7mm and 8.5mm are 1.414, 1.584 and 1.741, respectively. According to the current distribution ratio , the electrode filling ratio is 0.6, the height of the conductive solution is 40mm, and the depth of the nickel sheet simulating the conductor inserted into the conductive solution is 20mm, and then it can be deduced that the industrial electroslag remelting process is suitable for the premise that the diameter filling ratio of the crystallizer is 0.6 other process parameters.

Example 3

The device of this embodiment is the same as that of Embodiment 1, the difference is that the electrode is a stainless steel electrode, the conductive metal sheet is a platinum sheet, and the filling ratio is 0.7;

The method of using the above-mentioned device to determine the process parameters in the process of single-power supply and double-circuit electroslag remelting is carried out according to the following process steps:

(1) Configure a sodium chloride solution with a concentration of 0.1221mol/L according to the conductivity parameter range of the fluorine-containing slag system at 1700°C, put the sodium chloride solution into a quartz beaker, and adjust the liquid level of the sodium chloride solution at 40mm;

(2) Adjust the insertion depth of the platinum sheet of the simulated conductor in the conductive solution to 20mm, and the insertion depth of the metal electrode in the conductive solution to 5mm, 7mm and 8.5mm respectively;

(3) Turn on the power supply, adjust the voltage value of the voltage regulator at 10V, metal electrodes, conductive solution, platinum sheet simulating the bottom copper plate and voltage regulator, platinum sheet simulating conductor, conductive solution, and platinum sheet simulating the bottom copper plate and the voltage regulator constitute two energization circuits;

(4) After the reading of the digital display voltmeter is stable, record the current display of two digital display ammeters at the same temperature at 50°C, 55°C, 60°C, 65°C, 70°C, 75°C and 80°C. number.

According to the current reading in step (4), the total average values of the current distribution ratios of the two loops when the insertion depths of the metal electrodes in the conductive solution are 5mm, 7mm and 8.5mm are 1.884, 2.065 and 2.227 respectively. According to the current distribution ratio , the electrode filling ratio is 0.7, the height of the conductive solution is 40mm, and the depth of the platinum sheet of the simulated conductor inserted into the conductive solution is 20mm, and then it can be deduced that the industrial electroslag remelting process is suitable for the premise that the diameter filling ratio of the crystallizer is 0.7 other process parameters.

Example 4

The device of this embodiment is the same as embodiment 2;

The method of using the above-mentioned device to determine the process parameters in the process of single-power supply and double-circuit electroslag remelting is carried out according to the following process steps:

(1) Configure a sodium chloride solution with a concentration of 0.1221mol/L according to the conductivity parameter range of the fluorine-containing slag system at 1700°C, put the sodium chloride solution into a quartz beaker, and adjust the liquid level of the sodium chloride solution at 40mm;

(2) Adjust the insertion depth of the nickel sheet simulating the conductor in the conductive solution to 10mm, and the insertion depth of the metal electrode in the conductive solution to 5mm, 7mm and 8.5mm;

(3) Turn on the power supply, adjust the voltage value of the voltage regulator at 10V, metal electrodes, conductive solution, nickel sheet simulating the bottom copper plate and voltage regulator, and nickel sheet simulating conductors, conductive solution, and nickel sheet simulating the bottom copper plate and the voltage regulator constitute two energization circuits;

(4) After the reading of the digital display voltmeter is stable, record the current display of two digital display ammeters at the same temperature at 50°C, 55°C, 60°C, 65°C, 70°C, 75°C and 80°C. number.

According to the current readings in step (4), the total average values of the current distribution ratios of the two circuits when the metal electrodes are inserted into the conductive solution are 5mm, 7mm and 8.5mm are respectively 1.527, 1.736 and 1.941. According to the current distribution ratio , the electrode filling ratio is 0.6, the height of the conductive solution is 40mm, and the depth of the nickel sheet simulating the conductor inserted into the conductive solution is 10mm, and then it can be deduced that the industrial electroslag remelting process is suitable for the premise that the diameter filling ratio of the crystallizer is 0.6 other process parameters.

Example 5

The device of this embodiment is the same as embodiment 2, the difference is that: the conductive metal sheet is a tin sheet;

The method of using the above-mentioned device to determine the process parameters in the process of single-power supply and double-circuit electroslag remelting is carried out according to the following process steps:

(1) Configure a sodium chloride solution with a concentration of 0.1221mol/L according to the conductivity parameter range of the fluorine-containing slag system at 1700°C, put the sodium chloride solution into a quartz beaker, and adjust the liquid level of the sodium chloride solution at 30mm;

(2) Adjust the insertion depth of the tin sheet of the simulated conductor in the conductive solution to 20mm, and the insertion depth of the metal electrode in the conductive solution to 5mm, 7mm and 8.5mm respectively;

(3) Turn on the power supply, adjust the voltage value of the voltage regulator at 10V, metal electrodes, conductive solution, tin sheet simulating the bottom copper plate and voltage regulator, and tin sheet simulating conductors, conductive solution, and tin sheet simulating the bottom copper plate and the voltage regulator constitute two energization circuits;

(4) After the reading of the digital display voltmeter is stable, record the current display of two digital display ammeters at the same temperature at 50°C, 55°C, 60°C, 65°C, 70°C, 75°C and 80°C. number.

According to the current readings in step (4), the total average values of the current distribution ratios of the two circuits when the insertion depths of the metal electrodes in the conductive solution are 5mm, 7mm and 8.5mm are 1.613, 1.766 and 1.935, respectively. According to the current distribution ratio , the electrode filling ratio is 0.6, the height of the conductive solution is 30mm, and the depth of the tin sheet of the simulated conductor inserted into the conductive solution is 20mm, and then it can be deduced that the industrial electroslag remelting process is suitable for the premise that the diameter filling ratio of the crystallizer is 0.6 other process parameters.

Example 6

The device of this embodiment is the same as embodiment 2, the difference is that: the conductive metal sheet is a copper sheet;

The method of using the above-mentioned device to determine the process parameters in the process of single-power supply and double-circuit electroslag remelting is carried out according to the following process steps:

(1) Configure a potassium chloride solution with a concentration of 0.4884mol/L according to the conductivity parameter range of the fluorine-containing slag system at 1800°C, put the potassium chloride solution into a quartz beaker, and adjust the liquid level of the potassium chloride solution at 40mm;

(2) Adjust the insertion depth of the copper sheet of the simulated conductor in the conductive solution to 20mm, and the insertion depth of the metal electrode in the conductive solution to 5mm, 7mm and 8.5mm respectively;

(3) Turn on the power supply, adjust the voltage value of the voltage regulator to 10V, the metal electrode, the conductive solution, the copper sheet simulating the bottom copper plate and the voltage regulator, and the copper sheet simulating the conductor, the conductive solution, and the copper sheet simulating the bottom copper plate and the voltage regulator constitute two energization circuits;

(4) After the reading of the digital display voltmeter is stable, record the current display of two digital display ammeters at the same temperature at 50°C, 55°C, 60°C, 65°C, 70°C, 75°C and 80°C. number.

According to the current readings in step (4), the total average values of the current distribution ratios of the two circuits when the insertion depths of the metal electrodes in the conductive solution are 5mm, 7mm and 8.5mm are 1.472, 1.639 and 1.857, respectively. According to the current distribution ratio , the electrode filling ratio is 0.6, the height of the conductive solution is 40mm, and the depth of the copper sheet of the simulated conductor inserted into the conductive solution is 20mm, and then it can be deduced that the industrial electroslag remelting process is suitable for the premise that the diameter filling ratio of the crystallizer is 0.6 other process parameters.

Claims (2)

1. The method of determining the process parameters in the process of single-power supply and double-loop electroslag remelting, the device used includes insulating support, quartz beaker, voltage regulator, metal electrode, conductive metal sheet simulating conductor and conductive metal sheet simulating bottom copper plate The insulating support is provided with a supporting platform, and the quartz beaker and the scale used to measure the height of the conductive solution and the depth of the metal electrode inserted into the conductive solution are located on the supporting platform; the upper part of the metal electrode is connected to one pole of the voltage regulator through a wire, and the lower part is immersed in the In the conductive solution inside the quartz beaker; the conductive metal sheet of the simulated conductor is ring-shaped, fixed on the inner wall of the quartz beaker, and partially immersed in the conductive solution, and the part of the conductive metal sheet of the simulated conductor exposed outside the conductive solution passes through the wire Connected to one pole of the voltage regulator; the conductive metal sheet simulating the bottom copper plate is set at the bottom of the quartz beaker, and connected to the other pole of the voltage regulator through a wire; the metal electrode and the conductive metal sheet simulating the conductor are connected to the voltage regulator The same pole is connected; the device is also provided with a thermometer, a digital display voltmeter and 2 digital display ammeters, and the thermometer is inserted into the conductive solution inside the quartz beaker; the digital display voltmeter is connected in parallel with the voltage regulator; the The two digital display ammeters are respectively located on the wires connecting the conductive metal sheet of the analog conductor and the voltage regulator and on the wires connecting the metal electrode and the voltage regulator; it is characterized in that the method is carried out according to the following process steps: (1) Configure the conductive solution according to the conductivity parameter range of the fluorine-containing slag system at 1600-1800°C, put the conductive solution into a quartz beaker, and adjust the liquid level of the conductive solution to be 30-60mm; (2) Adjust the insertion depth of the conductive metal sheet of the simulated conductor in the conductive solution to be 5-20 mm, and the insertion depth of the metal electrode in the conductive solution to be 5-10 mm; (3) Turn on the power supply, adjust the voltage value of the voltage regulator at 10 ~ 36V, metal electrodes, conductive solution, conductive metal sheet and voltage regulator simulating the bottom copper plate, and conductive metal sheet simulating conductors, conductive solution, and simulating the bottom The conductive metal sheet of the copper plate and the voltage regulator form two energized circuits; (4) After the reading of the digital display voltmeter is stable, record the multiple sets of current readings of the two digital display ammeters at 50-80°C, and obtain the current distribution ratio of the double circuit at the corresponding temperature, and calculate the current distribution ratio overall average. 2. The method for determining process parameters in the single-power supply double-circuit electroslag remelting process according to claim 1, characterized in that the conductive solution is sodium chloride solution or potassium chloride solution, and the concentration is 0.1221～0.4884mol/ L.