WO2020232809A1 - High-productivity nanocrystalline ribbon production system - Google Patents

Abstract

A high-productivity nanocrystalline ribbon production system comprises a frame platform (1). A moving track (2) is installed at the frame platform (1). A melting working position and a steel pouring working position are arranged at the moving track (2). A vacuum furnace system is slidably installed at the moving track (2), and performs reciprocating movement between the melting working position and the steel pouring working position. A nozzle package mechanism corresponding to the vacuum furnace system is provided under the frame platform (1) at a position corresponding to the steel pouring working position. A closed-loop nozzle package constant liquid level control system is electrically connected between the nozzle package mechanism and the vacuum furnace system.

Description

Large-capacity nanocrystalline ribbon production system Technical field

The invention relates to a nanocrystalline strip production equipment structure, in particular to a large-capacity nanocrystalline thin strip production system.

Background technique

Iron-based nanocrystalline ribbons are known as the most cost-effective soft magnetic materials for their excellent soft magnetic properties, especially nanocrystalline thin ribbons with a thickness of less than 20um, which have low eddy current loss and are highly regarded for their excellent high-frequency characteristics. Favor. For iron-based nanocrystalline broadband with a width of 60mm or more, it is the first choice for magnetic shielding and wireless charging cores for mobile phones. With the development of science and technology and the improvement of strip production technology, the current method of obtaining nanocrystalline thin strips in batches in the domestic industry is pressure spraying. Through constant pressure control, the pressure at the nozzle is kept constant, thereby obtaining nanocrystalline ribbons with high density and relatively uniform thickness.

At present, the more consistent method of the nanocrystalline strip production line is: after the master alloy is melted to remove the slag, the molten iron is poured into the nozzle pack at one time through the pouring steel diversion groove; then the nozzle pack is sealed and filled with inert gas. There is a narrow slot nozzle at the bottom of the bag, and the high-temperature molten iron in the nozzle bag is sprayed onto the high-speed rotating cooling crystallizer through the nozzle slot, and the ribbon is spun under the action of centrifugal force. Therefore, the nanocrystalline ribbon spraying machine is also called the ribbon spinner. The pressure at the nozzle can be adjusted indirectly by adjusting the air pressure inside the nozzle pack to make the strip density uniform. This spraying method is called nanocrystalline pressure spraying.

However, due to the limitation of the nozzle package volume, the current maximum tonnage of the iron-based nanocrystalline pressure spray belt at one time does not exceed 200kg. Especially in the mass production of iron-based nanocrystalline ultra-wide and ultra-thin ribbons, it is difficult to achieve mass production due to the limitation of the nozzle package volume. At present, this has become a bottleneck restricting the continuous mass production of iron-based nanocrystalline ribbons. However, it is more difficult to make a large-capacity nozzle pack, and once the large-capacity nozzle pack has cracks and leaks, it will cause great harm and loss to the staff and production equipment.

Summary of the invention

technical problem

The technical problem to be solved by the present invention is to provide a large-capacity nanocrystalline thin strip production system with simple structure, reasonable design, high production efficiency, and can effectively improve the single-spraying yield of the nanocrystalline strip.

The solution to the problem

Technical solutions

In order to solve the above technical problems, the technical solution of the present invention is: a large-capacity nanocrystalline ribbon production system includes a rack platform on which a walking track is installed, and a melting station and a pouring track are provided on the walking track. A steel station, a vacuum furnace system reciprocating between the smelting station and the steel pouring station is slidably installed on the walking rail, and the lower part of the frame platform is provided with a corresponding steel pouring station A nozzle package mechanism corresponding to the vacuum furnace system, and a nozzle package constant liquid level closed-loop control system that controls the opening and closing amplitude of the water outlet of the vacuum furnace system is electrically connected between the nozzle package mechanism and the vacuum furnace system; A crystallizer is correspondingly installed under the nozzle pack mechanism, and an automatic take-up device is correspondingly installed on the tape-out side of the crystallizer, and an online thickness measuring device is arranged between the crystallizer and the automatic take-up device, so The online thickness measuring device and the nozzle pack mechanism are electrically connected with a strip thickness constant closed loop control system that controls the distance between the nozzle pack mechanism and the crystallizer.

As a preferred technical solution, the vacuum furnace system includes a platform frame body, a sliding roller is mounted on the bottom end of the platform frame body, the sliding roller is slidably mounted on the walking track, and the platform frame body is mounted A vacuum furnace body and a vacuum system connected with the vacuum furnace body are correspondingly equipped with a vacuum furnace power supply system.

As a preferred technical solution, a large-capacity smelting furnace is installed in the vacuum furnace body, a side bottom pouring steel device is installed on the side of the large-capacity smelting furnace, and the side bottom pouring steel device corresponds to the side The water outlet of the bottom casting steel pouring device is equipped with a horizontal plug rod assembly; the nozzle pack constant liquid level closed-loop control system is electrically connected between the nozzle pack mechanism and the horizontal plug rod assembly and controls the horizontal plug rod assembly. Horizontal movement of the plug rod assembly.

As a preferred technical solution, the horizontal stopper assembly and the frame platform are electrically connected with a vacuum furnace pouring opening and closing that controls the opening and closing of the horizontal stopper assembly and switches between the pouring state and the melting state. Control System.

As a preferred technical solution, the large-capacity smelting furnace includes a furnace body and an induction coil, and the induction coil is provided with a ramming shaped furnace lining; the vertical outlet end of the side-bottom steel casting device is connected with a vertical runner Insulation assembly; the side bottom pouring steel device includes a horizontal inner liquid outlet part communicating with the inner cavity of the furnace lining, the horizontal inner liquid outlet part is sealed with a right-angle outer liquid outlet part; the horizontal plug rod assembly wears Pass through the horizontal section of the right-angle outer liquid outlet part and connect with the horizontal inner liquid outlet part, and the vertical outlet end of the right-angle outer liquid outlet part is connected with the vertical runner insulation assembly; The free end of the section is sealed and sleeved on the outlet end of the horizontal inner outlet part. The right-angle outer outlet part is provided with a horizontal flow channel communicating with the inner cavity of the horizontal inner outlet part and the vertical runner The vertical flow channel connected by the thermal insulation components.

As a preferred technical solution, the inner cavity of the horizontal inner liquid outlet member is provided with a restrictor table that divides its flow path into an inner liquid inlet channel and an inner liquid outlet channel, and a restrictor is arranged on the restrictor table. Hole; the horizontal flow channel communicates with the inner outlet flow channel and the inner diameters of the two flow channels gradually increase along the flow direction of the molten steel; the horizontal plug rod assembly includes an end that passes through the right-angle outer outlet part And a side plug rod that abuts on the flow restriction table and blocks the flow restriction hole, the side plug rod is located at the free end outside the right-angle liquid outlet part and is electrically connected to the constant liquid level of the nozzle pack A closed loop control system and the pouring opening and closing control system of the vacuum furnace.

As a preferred technical solution, the vertical runner insulation assembly includes a fixed shell fixedly connected to the furnace body, and a runner connected to the vertical outlet end of the side bottom pouring steel device is sleeved in the fixed shell The inner lining is provided with a vertical runner corresponding to the water inlet of the nozzle pack mechanism, and an axially extending silicon carbide rod is sleeved between the inner lining of the runner and the fixed shell, An insulation layer is installed between the silicon carbide rod and the fixed shell.

As a preferred technical solution, the nozzle package mechanism includes a nozzle package body and a nozzle package position adjustment mechanism that controls the distance between the bottom nozzle of the nozzle package body and the upper cut surface of the crystallizer, and the strip thickness constant closed-loop control system It is electrically connected between the online thickness measuring device and the nozzle pack position adjustment mechanism and controls the nozzle pack position adjustment mechanism to adjust the distance between the bottom nozzle of the nozzle pack body and the upper cut surface of the mold.

As a preferred technical solution, the nozzle pack body is a high-level nozzle pack, a nozzle pack float is arranged in the nozzle pack body, and the nozzle pack float floats on the molten iron surface in the nozzle pack body. The nozzle pack constant liquid level closed-loop control system is electrically connected between the nozzle pack float and the horizontal plug rod assembly and controls the opening range of the horizontal plug rod assembly according to the height of the liquid level in the nozzle pack; A nozzle plug rod is detachably installed in the nozzle package body corresponding to the water outlet of the nozzle package body, a nozzle is installed on the bottom end of the nozzle package body corresponding to the water outlet of the nozzle package body, and the nozzle and the crystallizer Corresponding; the nozzle package body and the water inlet of the nozzle package body are provided with an inert gas protection device to prevent the oxidation of molten steel during the freewheeling process of molten iron.

As a preferred technical solution, the nozzle wrapper rod and the frame platform are electrically connected with a nozzle wrapper rod opening and closing control that controls the nozzle wrapper rod to switch between a spray band state and a non-spray band state system.

The beneficial effects of the invention

Beneficial effect

Due to the adoption of the above technical scheme; the beneficial effects of the present invention are:

1. Since the vacuum furnace system adopts a large-capacity smelting furnace and can be moved back and forth as a whole, it is sufficient to directly move the vacuum furnace system to the top of the nozzle pack mechanism. The molten iron is continuously supplied during belt spraying, which increases the cost The amount of secondary spray belt improves production efficiency;

2. The nozzle pack constant liquid level closed-loop control system is used to control the opening and closing amplitude of the water outlet of the vacuum furnace system. When the molten steel in the nozzle pack mechanism is less than the set value, the nozzle pack constant liquid level The closed-loop control system will control the water outlet of the vacuum furnace system to increase the opening range, so that the molten steel in the vacuum furnace system will flow into the nozzle pack mechanism; when the molten steel in the nozzle pack mechanism is greater than the set value The nozzle pack constant liquid level closed-loop control system controls the water outlet of the vacuum furnace system to reduce the opening range, so that the molten steel in the vacuum furnace system slows down or stops flowing into the nozzle pack mechanism, which can effectively reduce The molten steel in the nozzle package mechanism is maintained within a set range, so that the molten steel level in the nozzle package structure is maintained at a constant value, and the consistency of the strip density is maintained.

3. The closed-loop control system with constant strip thickness is used to control the distance between the nozzle pack mechanism and the crystallizer. When the online thickness measuring device measures a deviation between the strip thickness and the set value, The signal is transmitted to the closed-loop control system with constant strip thickness, and the closed-loop control system with constant strip thickness controls the nozzle pack mechanism to adjust the distance between the nozzle pack mechanism and the mold in real time.

4. Through the side-bottom pouring method, the length of the molten iron runner is reduced, the oxidation of the molten steel and the heat loss during the pouring process are reduced, and the electric energy is saved.

5. Through the high-liquid nozzle package, the spray pressure is increased and the strip density is increased;

6. The present invention has simple structure, reasonable design, high production efficiency, and can effectively increase the output of nanocrystalline strip in a single spray.

Brief description of the drawings

Description of the drawings

The following drawings are only intended to schematically illustrate and explain the present invention, and do not limit the scope of the present invention. among them:

Figure 1 is a schematic structural view of a vacuum furnace system in a pouring state according to an embodiment of the present invention;

Figure 2 is a schematic structural view of the vacuum furnace system in a smelting state according to an embodiment of the present invention;

Figure 3 is a structural cross-sectional view of a large-capacity smelting furnace according to an embodiment of the present invention;

4 is a structural diagram of an induction coil of an electric furnace according to an embodiment of the present invention;

In the picture: 1-frame platform; 2-walking track; 3-mold; 4-automatic take-up device; 5-on-line thickness measurement device; 6-platform frame body; 7-sliding roller; 8-vacuum furnace body; 9-Vacuum system; 10-Vacuum furnace power supply system; 11-Side bottom pouring steel device; 12-Nozzle package body; 13-Nozzle package position adjustment mechanism; 14-Nozzle package plug rod; 15-furnace body; 16-furnace lining 17-induction coil; 18-horizontal inner liquid outlet part; 19-inner liquid inlet channel; 20-inner liquid outlet channel; 21-flow restrictor; 22-flow restriction hole; 23-right-angle outer liquid outlet part; 24 -Horizontal flow channel; 25-Vertical flow channel; 26-Side plug rod; 27-Fixed shell; 28-Flow channel lining; 29-Insulation layer; 30-Silicon carbon rod.

Invention embodiment

Detailed ways

The present invention will be further described below in conjunction with the drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those of ordinary skill in the art can realize that the described embodiments can be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature, and are not used to limit the protection scope of the claims.

As shown in Figures 1 and 2, the large-capacity nanocrystalline ribbon production system includes a rack platform 1. The rack platform 1 serves as the mounting base of this embodiment and has a supporting role. A walking rail 2 is installed, the walking rail 2 is provided with a melting station and a steel pouring station, and the walking rail 2 is slidably installed with a reciprocating motion between the melting station and the steel casting station. Vacuum furnace system. In this embodiment, the melting station is located at the rear and the steel pouring station is located at the front. When melting is required, the vacuum furnace system moves backward as a whole. The vacuum furnace system moves forward as a whole to meet the different requirements of the melting station and the steel casting station; the lower part of the frame platform 1 corresponds to the steel casting station with a nozzle package corresponding to the vacuum furnace system Mechanism, the nozzle package mechanism and the vacuum furnace system are electrically connected with a nozzle package constant liquid level closed-loop control system that controls the opening and closing amplitude of the water outlet of the vacuum furnace system; the nozzle package mechanism is correspondingly installed below In the crystallizer 3, an automatic take-up device 4 is correspondingly installed on the tape-out side of the crystallizer 3. The automatic take-up device 4 realizes automatic take-up of the belt by means of negative pressure adsorption; the crystallizer 3 and the automatic take-up An online thickness measuring device 5 is arranged between the devices 4, the crystallizer 3, the automatic take-up device 4, and the online thickness measuring device 5 belong to the prior art, and the specific structure is not repeated here; The thickness measuring device 5 and the nozzle pack mechanism are electrically connected with a closed-loop control system of constant strip thickness for controlling the distance between the nozzle pack mechanism and the crystallizer 3.

In this embodiment, the smelting station is located at the rear and the steel casting station is located at the front. When smelting is required, the vacuum furnace system moves backward as a whole. When steel is required to be poured, the vacuum furnace The system moves forward as a whole to meet the different requirements of the smelting station and the steel pouring station; since the vacuum furnace system can be moved back and forth as a whole, the vacuum furnace system can be moved directly above the nozzle pack mechanism. The large-capacity smelting furnace can continuously supply molten iron during the band spraying process, effectively reducing the distance of the molten iron runner, reducing the oxidation and heat loss of the molten steel during the pouring process, and saving electric energy.

The nozzle package constant liquid level closed-loop control system is used to control the opening range of the water outlet of the vacuum furnace system. When the molten steel in the nozzle package mechanism is less than the set value, the nozzle package constant liquid level closed-loop control system The water outlet of the vacuum furnace system will be controlled to increase the opening range so that the molten steel in the vacuum furnace system will flow into the nozzle pack mechanism; when the molten steel in the nozzle pack mechanism is greater than the set value, The nozzle pack constant liquid level closed-loop control system controls the water outlet of the vacuum furnace system to reduce the opening range, so that the molten steel in the vacuum furnace system reduces or stops flowing into the nozzle pack mechanism, which can effectively The molten steel in the nozzle pack mechanism is maintained within a set range, so that the molten steel level in the nozzle pack mechanism is maintained at a constant value and the consistency of the strip is maintained.

The strip thickness constant closed-loop control system is used to control the distance between the nozzle pack mechanism and the crystallizer 3. When the online thickness measuring device 5 measures the strip thickness and the set value there is a deviation, The signal is transmitted to the closed-loop control system with constant strip thickness, and the closed-loop control system with constant strip thickness controls the nozzle package mechanism to adjust the distance between the nozzle package mechanism and the mold 3 in real time.

The vacuum furnace system includes a platform frame body 6, a sliding roller 7 is installed at the bottom end of the platform frame body 6, and the sliding roller 7 is slidably mounted on the walking rail 2 to realize the reciprocation of the vacuum furnace system Movement, the platform frame 6 is equipped with a vacuum furnace body 8 and a vacuum system 9 connected to the vacuum furnace body 8. The vacuum system 9 is correspondingly equipped with a vacuum furnace power supply system 10, the vacuum system 9 and The vacuum furnace power supply system 10 belongs to the prior art, and will not be repeated here.

A large-capacity smelting furnace is installed in the vacuum furnace body 8. By adopting a large-capacity melting furnace, the single-shot molten iron supply of the nanocrystalline strip production line is increased, that is, the single-spraying output of the nanocrystalline strip production line is increased, and the production efficiency is improved. . The side of the large-capacity smelting furnace is correspondingly installed with a side bottom pouring steel device 11, and the side bottom pouring steel device 11 is equipped with a horizontal plug rod assembly corresponding to the water outlet of the side bottom pouring steel device 11 In this embodiment, the side and bottom pouring device 11 is provided for side and bottom pouring steel, compared with the prior art tilting pouring method, because this embodiment does not use a tilting furnace when pouring steel Therefore, the furnace body occupies a small space and saves space. At the same time, the side bottom pouring method reduces the length of the molten iron flow channel and reduces the molten steel oxidation burning loss; the nozzle package constant liquid level closed-loop control system is electrically connected to the nozzle package mechanism Between and controlling the horizontal movement of the horizontal plug rod assembly.

3, the large-capacity smelting furnace includes a furnace body 15 in which an induction coil 17 is installed, and the induction coil 17 is provided with a ramming shaped furnace lining 16; the side bottom casting and pouring device The vertical outlet end of 11 is connected with a vertical sprue insulation assembly; the side bottom pouring steel device 11 includes a horizontal inner liquid outlet part 18 communicating with the inner cavity of the furnace lining 16, and the horizontal inner liquid outlet part 18 is sealed on A right-angled liquid-outlet part 23 is installed; the horizontal plug rod assembly passes through the horizontal section of the right-angled liquid-outlet part 23 and is connected to the horizontal inner liquid-outlet part 18, and the vertical outlet of the right-angled liquid-outlet part 23 End is connected with the vertical runner insulation assembly; the free end of the horizontal section of the right-angle outer liquid outlet part 23 is sealed and sleeved on the liquid outlet end of the horizontal inner liquid outlet part 18, and the right-angle outer liquid outlet part 23 is provided with The horizontal flow channel 24 communicated with the inner cavity of the horizontal inner liquid outlet member 18 and the vertical flow channel 25 communicated with the vertical runner insulation assembly.

The inner cavity of the horizontal inner liquid outlet member 18 is provided with a restrictor 21 that divides its flow path into an inner liquid inlet channel 19 and an inner liquid outlet 20, and a restrictor hole is provided on the restrictor 21 22; The horizontal flow passage 24 is in communication with the inner outlet flow passage 20 and the inner diameters of the two flow passages gradually become larger along the flow direction of the molten steel; the horizontal plug rod assembly includes an end that passes through the right angle out The liquid part 23 abuts against the restrictor 21 and blocks the side plug rod 26 of the restrictor hole 22, and the side plug rod 26 is located at the free end of the right-angle outer liquid outlet part 23 and is electrically connected To the closed-loop control system of the nozzle pack constant liquid level.

The vertical runner insulation assembly includes a fixed shell 27 fixedly connected to the furnace body 15, as shown in FIG. 4, the fixed shell 27 is sheathed with the vertical outlet end of the side bottom pouring steel device The runner liner 28 is provided with a vertical runner corresponding to the water inlet of the nozzle pack mechanism, and a shaft is sleeved between the runner liner 28 and the fixed housing 27 A silicon carbide rod 30 extending in the direction, the silicon carbide rod 30 is configured as a double-threaded silicon carbide rod, and an insulating layer 29 is installed between the silicon carbide rod 30 and the fixed housing 27.

The large-capacity smelting furnace controls the pouring of steel through the opening and closing of the side stopper 26. When steel is required to be poured, it is only necessary to travel the melting furnace to the upper part of the nozzle pack mechanism through the track, and aim at the water inlet of the nozzle pack mechanism for pouring. Steel, just open the side plug 26 and pour steel. This kind of electric furnace structure organically integrates smelting, heat preservation and steel pouring control, avoids heat loss in the process of molten steel transfer, and simplifies operation. In addition, the flow of molten steel is controllable, and the side plug 26 can be switched on and off timely according to requirements, and the flow of molten steel can be adjusted according to requirements to avoid waste of molten steel overflowing. The nozzle pack mechanism includes a nozzle pack body 12 and a nozzle pack position adjustment mechanism 13 that controls the distance between the bottom nozzle of the nozzle pack body 12 and the upper cut surface of the crystallizer 3. The nozzle pack position adjustment mechanism 13 has front and back , Up and down, left and right, and front and rear tilt angle adjustment three-dimensional adjustment structure, the specific mechanism belongs to the prior art, and will not be repeated here; the strip thickness constant closed loop control system is electrically connected to the online thickness measurement device 5 and the nozzle package The position adjustment mechanism 13 and the nozzle pack position adjustment mechanism 13 are controlled to adjust the distance between the bottom nozzle of the nozzle pack body 12 and the upper cut surface of the crystallizer 3. The online thickness measuring device 5 is used for online monitoring of strip thickness and deviation, and transmits the signal to the closed-loop control system for the constant thickness of the strip. When the online thickness measuring device 5 measures the thickness of the strip and the set value When there is a deviation, after the signal is transmitted to the closed-loop control system for constant strip thickness, the closed-loop control system for constant strip thickness will control the nozzle pack position adjustment mechanism 13, and the nozzle pack position adjustment mechanism 13 will The nozzle package body 12 is driven to move forward and backward, up and down, left and right, and forward and backward inclination to adjust the distance between the water outlet of the nozzle package 12 and the water inlet of the crystallizer 3 until the online thickness measurement device 5 monitors When the obtained strip thickness and deviation meet the use requirements, the closed-loop control system for the constant strip thickness will control the nozzle pack position adjustment mechanism 13 to stop.

In order to ensure the high density of the nanocrystalline strip, the nozzle package 12 is a high-level nozzle package, and a high-level spray belt method is adopted to increase the pressure of the spray belt and increase the density of the strip. At the same time, the nozzle package 12 and An inert gas protection device for preventing the oxidation of molten steel during the freewheeling process of the molten iron is also provided at the water inlet of the nozzle package body 12 to prevent oxidation of the surface of the molten iron. The inert gas protection device belongs to the prior art and will not be repeated here. And not shown in the figure; the nozzle package body 12 is provided with a nozzle package float, the nozzle package float floats on the molten steel surface in the nozzle package body 12, the nozzle package constant liquid level closed-loop control The system is electrically connected between the nozzle pack float and the horizontal plug rod assembly, and controls the opening range of the horizontal plug rod assembly according to the liquid level in the nozzle pack body 12, that is, the nozzle pack The constant liquid level closed-loop control system is electrically connected between the nozzle pack float and the side plug rod 26 and controls the horizontal movement of the side plug rod 26. The nozzle pack float is set as a float type liquid level sensor. To monitor the height of the liquid level in the nozzle pack body 12, and feedback the height signal to the closed-loop control system of the nozzle pack constant liquid level, and form a closed-loop feedback control with the side plug rod 26, when the monitored nozzle pack When the height of the liquid level in the body 12 is greater than the set value, the nozzle pack constant liquid level closed-loop control system controls the side plug rod 26 to block the restrictor hole 22 or reduce the opening range. At this time, the vacuum furnace The flow rate of molten steel at the outlet of the body 8 is reduced, and the molten iron in the vacuum furnace body 8 reduces the flow into the nozzle package body 12 through the water outlet of the vacuum furnace body 8. When the nozzle package body 12 is monitored When the inner liquid level is less than the set value, the nozzle pack constant liquid level closed-loop control system controls the side plug rod 26 to increase the opening range. At this time, the flow of molten iron at the outlet of the vacuum furnace body 8 increases, and the vacuum The molten iron in the furnace body 8 flows into the nozzle package body 12 through the water outlet of the vacuum furnace body 8 to stably provide molten iron in the nozzle package body 12 and maintain the liquid level of the nozzle package body 12 constant, Realize the constant pressure spraying belt to maintain the consistency of the strip. Of course, the nozzle pack float can also be replaced with other sensors with liquid level measurement functions, or other devices with specific liquid level measurement functions and capable of transmitting liquid level change signals to. A nozzle plug rod 14 is detachably installed in the nozzle package body 12 corresponding to the water outlet of the nozzle package body 12, and a nozzle is installed at the bottom end of the nozzle package body 12 corresponding to the water outlet of the nozzle package body 12. The nozzle corresponds to the crystallizer 3.

Since the vacuum furnace system will be in the two steel pouring stations and the melting station, and the working principle and state of the two stations are different, so the horizontal plug rod assembly and The frame platform 1 is electrically connected with a vacuum furnace pouring opening and closing control system that controls the horizontal plug rod assembly to switch between the pouring state and the smelting state, and the side plug rod 26 is located at the right-angle liquid outlet part The outer free end of 23 is also electrically connected to the pouring opening and closing control system of the vacuum furnace. When the vacuum furnace system is in the melting state of the smelting station, the vacuum furnace pouring opening and closing control system will control the nozzle package constant liquid level closed loop control system and the strip thickness constant closed loop control system to stop working. The horizontal plug rod assembly is always in a closed state, and the water outlet of the side bottom pouring steel device 11 is always kept in a closed state, and the molten steel in the vacuum furnace body 8 will not flow out; and when the vacuum furnace system When switching to the pouring state of the steel pouring station, the vacuum furnace pouring opening and closing control system will control the nozzle package constant liquid level closed loop control system and the strip thickness constant closed loop control system to start working, and the nozzle package constant liquid level The position closed-loop control system will control the movement of the horizontal plug rod assembly in real time, so as to control the opening and closing state of the water outlet of the side bottom steel pouring device 11, and adjust the opening and closing amplitude of the side plug 26 The flow rate of the molten iron is used to adjust the molten iron level in the nozzle pack 12 to maintain a constant height. Similarly, the closed-loop control system for the constant strip thickness will control the nozzle pack position adjustment mechanism 13 in real time to adjust the distance between the bottom nozzle of the nozzle pack body 12 and the upper cut surface of the mold 3 in real time.

Similarly, because the vacuum furnace system will be in the two steel pouring stations and the smelting station, and the working principles and states of the two stations are different, so the nozzle is wrapped in the rod 14 is electrically connected to the frame platform 1 with a nozzle wrapper rod opening and closing control system that controls the nozzle wrapper rod 14 to switch between the spray band state and the non-spray band state; the nozzle wrapper rod 14 The opening and closing control system is also connected to the nozzle pack float and controls the nozzle pack rod 14 to rise and fall. When the vacuum furnace system is at the smelting station, the nozzle pack rod opening and closing control system will control the nozzle pack constant liquid level closed loop control system and the strip thickness constant closed loop control system to stop working, and at the same time When the nozzle pack float monitors that the liquid level is less than the set value, the nozzle pack rod opening and closing control system will control the nozzle pack rod 14 to descend, and keep it in the descending state, and remove the nozzle pack body 12 The nozzle is always kept closed, and the molten steel in the nozzle package body 12 will not flow out. At this time, the nozzle package body 12 is insulated and the nozzle can be replaced; when switched to the steel pouring station, the nozzle cover rod opens and closes The control system first controls the nozzle pack constant liquid level closed-loop control system, raises the molten steel level in the nozzle pack body 12 to the spray band level, opens the nozzle pack lever 14 to continue spraying, and then controls all The closed loop control system with constant strip thickness works normally.

In this embodiment, the rack platform 1 is provided with a total automatic control system, the vacuum furnace system, the nozzle pack mechanism, the nozzle pack constant liquid level closed-loop control system, the crystallizer 3, the The automatic take-up device 4, the online thickness measurement device 5, the strip thickness constant closed-loop control system, the vacuum furnace pouring opening and closing control system, and the nozzle packing rod opening and closing control system are all electrically connected to the The total automatic control system; the total automatic control system realizes the fully automatic operation of this embodiment, saves time and effort, and is easy to operate.

The specific working steps of this embodiment are as follows:

Step 1: Refer to Figure 2. First, the vacuum furnace system melts the master alloy at the melting station and evacuates the slag to obtain a purified alloy steel;

Step 2: Then move the vacuum furnace system containing molten alloy steel to the pouring station through the walking rail 2, see Figure 1;

Step 3: Open the side plug rod 26, slowly pour the molten steel in the vacuum furnace body 8 into the nozzle package body 12 (at this time the nozzle package rod 14 is in the closed state), and establish a certain height Liquid level, and then close the side plug rod 26;

Step 4: After receiving the command from the spray belt staff to pour steel, open the nozzle cover rod 14 and the spray belt starts; after that, open the side stopper rod 26, and adjust the station in real time according to the nozzle bag float monitoring data. The opening range of the side plug rod 26 to maintain a constant liquid level;

Step 5: Monitor the strip thickness and deviation through the online thickness measuring device 5, adjust the front and rear, up and down, left and right and front and back tilt angles of the nozzle package 12 through the nozzle package position adjustment mechanism 13, and adjust the nozzle package in real time The distance between the nozzle at the bottom end of the body 12 and the crystallizer 3;

Step 6: After the vacuum furnace body 8 has finished pouring steel, close the side plug 26; the vacuum furnace system returns to the smelting station to continue smelting, see Figure 2;

Step 7: After the liquid level in the nozzle package body 12 is lower than the lowest set liquid level of the spray belt, close the nozzle package rod 14 and the nozzle package body 12 is insulated. At this time, the nozzle can be replaced; When steeling, after raising the liquid level of the molten steel in the nozzle package 12 to the level of the spray band, open the nozzle cover rod 14 to continue the spray band and start the reciprocating operation.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the foregoing embodiments. The foregoing embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and improvements, these changes and improvements all fall within the scope of the claimed invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. The large-capacity nanocrystalline ribbon production system includes a rack platform, characterized in that: a walking rail is installed on the rack platform, a melting station and a steel casting station are arranged on the walking rail, and the walking rail is A vacuum furnace system reciprocating between the smelting station and the steel pouring station is slidably installed, and a nozzle corresponding to the vacuum furnace system is provided under the frame platform corresponding to the steel pouring station A package mechanism, the nozzle package mechanism and the vacuum furnace system are electrically connected with a nozzle package constant liquid level closed-loop control system that controls the opening and closing amplitude of the water outlet of the vacuum furnace system; correspondingly installed below the nozzle package mechanism There is a crystallizer, the belt outlet side of the crystallizer is correspondingly installed with an automatic winding device, an online thickness measuring device is arranged between the crystallizer and the automatic winding device, and the online thickness measuring device is connected to the nozzle A closed loop control system of constant strip thickness for controlling the distance between the nozzle bag mechanism and the crystallizer is electrically connected between the wrapping mechanisms. .
2. The large-capacity nanocrystalline ribbon production system according to claim 1, wherein the vacuum furnace system includes a platform frame body, a sliding roller is installed at the bottom end of the platform frame body, and the sliding roller is slidably mounted on On the walking track, a vacuum furnace body and a vacuum system connected to the vacuum furnace body are installed on the platform frame, and the vacuum system is correspondingly equipped with a vacuum furnace power supply system.
3. The large-capacity nanocrystalline ribbon production system of claim 2, wherein a large-capacity smelting furnace is installed in the vacuum furnace body, and a side-bottom steel casting device is installed on the side of the large-capacity smelting furnace. A horizontal plug rod assembly is installed in the side-bottom steel pouring device corresponding to the water outlet of the side-bottom steel pouring device; the nozzle package constant liquid level closed-loop control system is electrically connected to the nozzle package mechanism and the outlet Between the horizontal plug rod components and control the horizontal movement of the horizontal plug rod components.
4. The large-capacity nanocrystalline ribbon production system according to claim 3, wherein the horizontal stopper assembly is electrically connected to the frame platform with an on-off controller for controlling the opening and closing of the horizontal stopper assembly. Vacuum furnace pouring opening and closing control system that switches between pouring state and melting state.
5. The large-capacity nanocrystalline ribbon production system according to claim 4, wherein the large-capacity smelting furnace includes a furnace body and an induction coil, and the induction coil is provided with a ramming shaped furnace lining; the side bottom The vertical outlet end of the pouring steel device is connected with a vertical sprue insulation assembly; the side bottom pouring steel device includes a horizontal inner liquid outlet part communicating with the inner cavity of the furnace lining, and the horizontal inner liquid outlet part is sealed and installed There is a right-angled liquid outlet part; the horizontal plug rod assembly passes through the horizontal section of the right-angled liquid outlet part and is connected with the horizontal inner liquid outlet part, and the vertical outlet end of the right-angled liquid outlet part is connected to the vertical The sprue insulation assembly is connected; the free end of the horizontal section of the right-angled outer liquid-outlet part is sealed and sleeved on the liquid-out end of the horizontal inner liquid-outlet part, and the right-angle outer liquid-outlet part is provided with a connection with the horizontal inner liquid-outlet part The horizontal flow channel communicated with the inner cavity and the vertical flow channel communicated with the vertical runner insulation assembly.
6. The large-capacity nanocrystalline ribbon production system according to claim 5, characterized in that: the inner cavity of the horizontal inner liquid outlet part is provided with a flow channel divided into an inner liquid inlet channel and an inner liquid outlet channel. The restrictor table is provided with restrictor holes; the horizontal flow channel is in communication with the inner liquid outlet channel and the inner diameters of the two flow channels gradually increase along the flow direction of the molten steel; the horizontal type The plug rod assembly includes a side plug rod whose end passes through the right-angle liquid outlet component and abuts on the restrictor and blocks the flow restriction hole, the side plug rod is located outside the right-angle liquid outlet component The free end of is electrically connected to the nozzle package constant liquid level closed-loop control system and the vacuum furnace pouring opening and closing control system.
7. The large-capacity nanocrystalline ribbon production system according to claim 6, wherein the vertical runner insulation assembly includes a fixed shell fixedly connected to the furnace body, and the fixed shell is sleeved with the side The runner liner connected to the vertical outlet end of the bottom pouring steel casting device, the runner liner is provided with a vertical runner corresponding to the water inlet of the nozzle pack mechanism, and the runner liner is connected to the A silicon carbide rod extending axially is sleeved between the fixed shells, and an insulating layer is installed between the silicon carbon rods and the fixed shell.
8. The large-capacity nanocrystalline ribbon production system of claim 7, wherein the nozzle package mechanism includes a nozzle package body and a nozzle that controls the distance between the bottom nozzle of the nozzle package body and the upper section of the crystallizer Bag position adjustment mechanism, the strip thickness constant closed-loop control system is electrically connected between the online thickness measuring device and the nozzle bag position adjustment mechanism and controls the nozzle bag position adjustment mechanism to adjust the nozzle bag body The distance between the bottom nozzle and the upper cut surface of the crystallizer.
9. The large-capacity nanocrystalline ribbon production system according to claim 8, wherein the nozzle package is a high-level nozzle package, and a nozzle package float is arranged in the nozzle package, and the nozzle package floats are floating. On the molten iron level in the nozzle package, the nozzle package constant liquid level closed-loop control system is electrically connected between the nozzle package float and the horizontal plug rod assembly and is based on the height of the liquid level in the nozzle package. The opening range of the horizontal plug rod assembly is controlled; a nozzle plug rod is detachably installed in the nozzle package body corresponding to the water outlet of the nozzle package body, and the bottom end of the nozzle package body corresponds to the nozzle package body A nozzle is installed at the water outlet, and the nozzle corresponds to the crystallizer; the nozzle package body and the water inlet of the nozzle package body are provided with an inert gas protection device to prevent the oxidation of molten steel during the freewheeling process of the molten iron.
10. The large-capacity nanocrystalline ribbon production system according to claim 9, wherein the nozzle plug rod is electrically connected with the frame platform to control the nozzle plug rod in the spray state and non- The opening and closing control system of the nozzle wrapper rod to switch between spray belt states.

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