CN110090866B - Casting and rolling plate shape control device and method - Google Patents

Abstract

The invention belongs to the technical field of aluminum foil production and manufacture, and discloses a casting and rolling plate shape control device, comprising: a roll, a deflector roll, and a spray device, and the spray device is arranged between the roll and the deflector roll , the spraying device is used for spraying liquid nitrogen; the casting and rolling plate shape control device also includes a plate thickness plate shape monitoring device, and the plate thickness plate shape monitoring device includes a thickness measurement unit, a data transmission unit, a Data processing PC; the thickness measuring unit is located behind the deflector roll, and is used to detect the thickness of different points in the transverse direction of the cast-rolled plate, and then upload the data to the data processing PC, and the PC will draw the data as plate curve. Compared with the related art, the present application has the following advantages: 1. The asymmetric shape of the cast-rolled sheet can be controlled; 2. The cast-rolled sheet is cooled to improve the surface quality and reduce defects such as center segregation or surface segregation; 3. Reduce the cast-rolled sheet Roll slack time.

Description

Casting and rolling plate shape control device and method

【Technical field】

The invention belongs to the technical field of aluminum foil production and manufacture, and in particular relates to a casting and rolling plate shape control device and method.

【Background technique】

In the production process of double-zero foil, the casting-rolling method is commonly used to produce double-zero foil, while the current casting-rolling method to produce double-zero foil is subject to the influence of center segregation or surface segregation, and it is difficult to improve the efficiency; and the production of cast-rolled sheet to double zero foil After the foil, there is a problem of the shape of the plate. In the related art, the Chinese patent publication number is 201969854U, the name is "a nozzle fixture with an inert gas introduction function", and a nozzle with an inert gas introduction function is disclosed. The inert gas introduced into the fixture can effectively prevent the secondary pollution and oxidation of the molten aluminum. Chinese Patent Publication No. CN1364672 Casting and Rolling Plate Shape Control Device, named "Fast-Solid Casting and Rolling Nozzle Cavity Flow Control Device", discloses a method that combines melt flow field, temperature field, solute concentration field and strip quality Co-regulated flow control device. The deficiencies of related technologies are: 1. Unable to adjust the shape of the asymmetrical plate cast and rolled; 2. The hot cast rolled plate is prone to scratches when passing through the roll gaps such as deflector rolls and pinch rolls; 3. The surface of the hot cast rolled plate is easy to be scratched. Oxidation; 4. The cooling strength of casting and rolling is limited, which limits the production capacity, and defects such as surface segregation or center segregation are prone to occur;

Therefore, it is necessary to provide a new type control device and method for casting and rolling to solve the above technical problems.

[Content of the invention]

The technical problem to be solved by the present invention is to provide a casting and rolling plate shape control device and method which is easy to process and has good performance.

The invention discloses a casting and rolling plate shape control device, comprising:

Roller, deflector roller, spray device;

the spraying device is arranged between the roll and the deflector roll;

The spray device is used for spraying liquid nitrogen;

The casting and rolling plate shape control device also includes a plate thickness plate shape monitoring device, and the plate thickness plate shape monitoring device includes a thickness measurement unit, a data transmission unit, and a data processing PC connected in sequence; the thickness measurement unit is located at the After the deflector roll, it is used to detect the thickness of different points in the transverse direction of the cast-rolled plate, and then upload the data to the data processing PC through the data transmission unit, and the data processing PC draws the data into a plate shape curve;

The thickness measuring unit includes an X-ray emitting unit and a signal receiving unit that are oppositely and spaced apart, and the signal receiving unit is connected to the data transmission unit;

The spray device includes a spray execution device and a spray control device;

The spray execution device includes a nozzle;

The spray control device is used to control the temperature and the spray amount of the liquid nitrogen sprayed from the nozzle;

The data processing PC is connected with the spray control device.

Preferably, the X-ray emitting unit includes a plurality of X-ray emitting sources arranged side by side along the transverse direction of the cast-rolled plate.

Preferably, the number of the X-ray emission sources is 12.

Preferably, the 12 X-ray emission sources are arranged at equal distances.

Preferably, the nozzles include an upper nozzle and a lower nozzle that are opposite and spaced apart.

Preferably, the upper nozzle and the lower nozzle have the same structure.

Preferably, the upper nozzle includes a main channel, which is communicated with the main channel and faces a plurality of nozzle holes of the cast-rolled plate.

Preferably, the number of the nozzle holes is ≥12.

Preferably, the number of the spray holes is 12 and they are arranged at equal distances.

The present invention also discloses a method for controlling the shape of a cast-rolled plate, using the above-mentioned control device for the shape of the cast-rolled plate, and the method for controlling the shape of the cast-rolled plate includes the following steps:

After the cast plate leaves the deflector roller, the X-ray emission unit in the thickness measurement unit emits X-rays to the cast plate at several points in the transverse direction of the cast plate. After the rays penetrate the cast plate, the data is received by the signal receiving unit. And transmit it to the data processing PC through the data transmission unit. The data processing PC receives the data and calculates the thickness at different positions in the transverse direction, and draws it into a curve. The data processing PC includes a PLC, and the PLC analyzes the ideal cast-rolled plate by analyzing the thickness Model, carry out data analysis, and then send instructions to the spray control device from the PLC, and the spray control device controls the spray temperature and spray amount of liquid nitrogen sprayed in the upper nozzle and the lower nozzle in the spray execution device; follow up the casting and rolling plate According to the thickness of different points of the cast-rolled plate, adjust the injection temperature and injection amount of liquid nitrogen; ensure the liquid nitrogen temperature in the place where the thickness of the cast-rolled plate is larger than that in the place with a smaller thickness of the cast-rolled plate Lower or larger amount of liquid nitrogen injection, the temperature of the cast-rolled sheet affects the temperature of the molten aluminum in the corresponding casting nozzle cavity. Thickness, realize the control of cast and rolled plate shape.

Compared with the related art, the present invention has the following beneficial effects and advantages: 1. It can control the asymmetric shape of the cast-rolled sheet; 2. Cool the cast-rolled sheet, improve the surface quality, and reduce defects such as center segregation or surface segregation; 3. Reduce the Coil sluggish time. The following technical effects can be achieved: 1. Adjustable asymmetrical plate type casting and rolling; 2. Rapidly cooling the casting and rolling, reducing the damage of the casting rolls such as deflector rolls and pinch rolls to the surface of the casting and rolling, and improving the surface quality 3. Reduce the natural oxidation of the surface of the cast-rolled sheet; 4. Increase the cooling strength of the casting and rolling, reduce defects such as surface segregation or center segregation, and improve the casting and rolling capacity;

【Description of drawings】

Fig. 1 is the overall structure schematic diagram of a kind of casting and rolling plate shape control device of the present invention;

2 is a schematic structural diagram of a plate thickness and plate shape monitoring device in a casting and rolling plate shape control device of the present invention;

FIG. 3 is a schematic structural diagram of a spray device in a casting and rolling plate shape control device of the present invention.

In the picture:

Spray device 1, plate thickness and plate shape monitoring device 2, cast-rolled coil finished product 3, cast-rolled plate 4, spray execution device 5, X-ray emission unit 6, signal receiving unit 7, data transmission unit 8, data processing PC 9.

【Detailed ways】

In order to facilitate understanding of the present invention, the present invention will be described more fully below. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

Specific Example 1

Referring to Figures 1-3, a casting and rolling plate shape control device includes: a roll, a deflector roll, and a spray device 1; the spray device 1 is arranged between the roll and the deflector roll; the spray device 1 is used for spraying liquid Nitrogen; the casting and rolling plate shape control device also includes a plate thickness plate shape monitoring device 2, and the plate thickness plate shape monitoring device 2 includes a thickness measurement unit, a data transmission unit 8, and a data processing PC 9 connected in sequence; After the guide roller, it is used to detect the thickness of different points in the transverse direction of the cast-rolled plate 4, and then upload the data to the data processing PC 9 through the data transmission unit 8, and the data processing PC 9 draws the data into a plate shape curve; the thickness measurement unit includes The X-ray emitting unit 6 and the signal receiving unit 7 are arranged opposite and spaced apart, and the signal receiving unit 7 is connected with the data transmission unit 8; the spray device 1 includes a spray execution device 5 and a spray control device; the spray execution device 5 includes a Nozzle; the spray control device is used to control the temperature and spray amount of liquid nitrogen sprayed from the nozzle; the data processing PC 9 is connected with the spray control device. The X-ray emitting unit 6 includes a plurality of X-ray emitting sources which are arranged side by side along the transverse direction of the cast-rolled plate 4 . The number of X-ray emission sources is 12. The 12 X-ray emission sources are set equidistantly. The nozzles include upper and lower nozzles that are opposite and spaced apart. The structure of the upper nozzle is the same as that of the lower nozzle. The upper nozzle includes a main channel, which communicates with the main channel and faces several nozzle holes of the cast-rolled plate 4 . The number of nozzle holes is ≥12. The number of orifices is 12, and they are equally spaced.

Specific embodiment 2

A method for controlling the shape of a casting and rolling plate, using the casting and rolling plate shape control device in Embodiment 1 to control the shape of the casting and rolling plate. The method for controlling the shape of the casting and rolling plate includes the following steps: after the casting and rolling plate 4 exits the deflector roll, the thickness is measured. The X-ray emission unit 6 in the unit emits X-rays to the cast-rolled plate 4 at several points in the transverse direction of the cast-rolled plate 4. After the rays penetrate the cast-rolled plate 4, the data is received by the signal receiving unit 7 and transmitted through the data transmission unit 8. It is transmitted to the data processing PC 9, and the data processing PC 9 receives the data and calculates the thickness at different positions in the horizontal direction, and draws it into a curve. The data processing PC 9 includes a PLC. Carry out data analysis, and then send instructions to the spray control device from the PLC, and the spray control device controls the spray temperature and spray amount of liquid nitrogen sprayed in the upper nozzle and the lower nozzle in the spray execution device 5; Data, according to the thickness of different points of the cast-rolled plate, adjust the injection temperature and injection amount of liquid nitrogen; ensure that the liquid nitrogen in the place where the thickness of the cast-rolled plate 4 is larger than the place where the thickness of the cast-rolled plate 4 is smaller When the temperature is lower or the injection amount of liquid nitrogen is larger, the temperature of the cast-rolled plate 4 affects the temperature of the molten aluminum in the corresponding casting nozzle cavity. The thickness of different areas can realize the control of casting and rolling plate shape.

Compared with the related art, the present invention has the following beneficial effects and advantages: 1. It can control the asymmetric shape of the cast-rolled sheet; 2. Cool the cast-rolled sheet, improve the surface quality, and reduce defects such as center segregation or surface segregation; 3. Reduce the Coil sluggish time. The following technical effects can be achieved: 1. Adjustable asymmetrical plate type casting and rolling; 2. Rapidly cooling the casting and rolling, reducing the damage of the casting rolls such as deflector rolls and pinch rolls to the surface of the casting and rolling, and improving the surface quality 3. Reduce the natural oxidation of the surface of the cast-rolled sheet; 4. Increase the cooling strength of the casting and rolling, reduce defects such as surface segregation or center segregation, and improve the casting and rolling capacity;

The above are only the embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these belong to the present invention. scope of protection.

Claims (10)

1. A cast strip profile control apparatus, comprising:

a roller, a deflector roller and a spraying device;

the spraying device is arranged between the roller and the deflection roller;

the spraying device is used for spraying liquid nitrogen;

the cast-rolling plate type control device also comprises a plate thickness and plate type monitoring device, wherein the plate thickness and plate type monitoring device comprises a thickness measuring unit, a data transmission unit and a data processing PC machine which are sequentially connected; the thickness measuring unit is positioned behind the deflector roll and used for detecting the thickness of different transverse points of the cast-rolled plate, and the data are uploaded to the data processing PC through the data transmission unit and drawn into a plate-shaped curve by the data processing PC;

the thickness measuring unit comprises an X-ray emitting unit and a signal receiving unit which are opposite and arranged at intervals, and the signal receiving unit is connected with the data transmission unit;

the spraying device comprises a spraying execution device and a spraying control device; the spray execution device comprises a nozzle, and the nozzle comprises an upper nozzle and a lower nozzle which are oppositely arranged at an interval;

the spray control device is used for controlling the temperature and the injection quantity of liquid nitrogen injected by the nozzles, the spray control device is used for following the cast-rolling plate type data, and adjusting the injection temperature and the injection quantity of the liquid nitrogen injected by the upper nozzles and the lower nozzles in the spray execution device according to the thicknesses of different points of the cast-rolling plate type, so that the liquid nitrogen temperature of a place with a large thickness value of the cast-rolling plate is lower or the liquid nitrogen injection quantity of a place with a small thickness value of the cast-rolling plate is larger than that of a place with a large thickness value of the cast-rolling plate, the temperature of the cast-rolling plate influences the temperature of aluminum liquid in a corresponding casting nozzle cavity, and the length of a cast-rolling area at the place is changed due to the change of the temperature of the aluminum liquid;

and the data processing PC is connected with the spraying control device.

2. A cast rolling plate profile control device according to claim 1, wherein the X-ray emission unit comprises a plurality of X-ray emission sources arranged side by side in line along the transverse direction of the cast rolling plate.

3. A cast strip profile control apparatus as claimed in claim 2 wherein the number of X-ray emitting sources is 12.

4. A cast strip profile control apparatus as claimed in claim 3 wherein 12X-ray emitting sources are equally spaced.

5. A cast strip profile control apparatus as claimed in claim 1 wherein the upper and lower nozzles are of identical construction.

6. A cast rolling plate type control device as claimed in claim 5, wherein the upper nozzle comprises a main channel, and a plurality of spray holes are communicated with the main channel and are opposite to the cast rolling plate.

7. A cast-rolling plate type control device as claimed in claim 6, wherein the number of the spray holes is more than or equal to 12.

8. A cast rolling plate type control device according to claim 7, wherein the number of the spray holes is 12.

9. A cast rolling plate type control device as claimed in claim 8, wherein the spray holes are arranged equidistantly.

10. A cast-rolled plate profile control method, characterized in that the cast-rolled plate profile control device according to any one of the preceding claims 1 to 9 is used, and the cast-rolled plate profile control method comprises the following steps: after the cast-rolled plate goes out of the deflection guide roller, an X-ray transmitting unit in the thickness measuring unit transversely transmits X-rays to the cast-rolled plate at a plurality of points, after the X-rays penetrate through the cast-rolled plate, data are received by a signal receiving unit and are transmitted to a data processing PC through a data transmission unit, the data processing PC receives the data and calculates to obtain the thickness of different transverse positions and draws a curve, the data processing PC comprises a PLC (programmable logic controller), the PLC analyzes an ideal cast-rolled plate shape to analyze the data, and then the PLC sends an instruction to a spray control device, and the spray control device controls the spray temperature and the spray quantity of liquid nitrogen sprayed by an upper nozzle and a lower nozzle in the spray execution device; following the cast-rolling plate profile data, adjusting the injection temperature and the injection quantity of the injected liquid nitrogen according to the thicknesses of different points of the cast-rolling plate profile; the liquid nitrogen temperature at the place with the large thickness value of the cast-rolled plate is lower or the liquid nitrogen injection quantity is larger than that at the place with the small thickness value of the cast-rolled plate, the temperature of the cast-rolled plate affects the temperature of the aluminum liquid in the inner cavity of the corresponding casting nozzle, and the change of the temperature of the aluminum liquid causes the length change of the cast-rolled area, so that the thickness of different areas of the cast-rolled plate is affected, and the control of the cast-rolled plate is realized.

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