A method and device for preparing nickel-based corrosion-resistant alloy thin strip

Abstract

The present invention provides a method and device for preparing a nickel-based corrosion-resistant alloy thin strip, which relates to the technical field of nickel-based corrosion-resistant alloys, and comprises the following steps: S1, forging, hot rolling and cold rolling the original ingot of the cast nickel-based corrosion-resistant alloy to form a thinner strip one; S2, rolling the thinner strip one obtained in step S1 through rolling equipment one to form a thinner strip two; S3, rolling the thinner strip two obtained in step S2 through rolling equipment two to form a thinner strip three; wherein, during the rolling process, the rolling rate of the rolling equipment two is controlled to be less than the rolling rate of the rolling equipment one. The invention can reduce the thermal cracks and burns generated on the surface of the nickel-based corrosion-resistant alloy thin strip, and ensure the surface quality of the finished nickel-based corrosion-resistant alloy thin strip.

Description

Technical Field

[0001] The invention relates to the technical field of nickel-based corrosion-resistant alloys, and in particular to a method and a device for preparing a nickel-based corrosion-resistant alloy thin strip. Background Art

[0002] Since a certain amount of Ti, Nb and Cr are added to the nickel-based corrosion-resistant alloy, it has higher hardness and strength. The rolling pressure of the nickel-based corrosion-resistant alloy thin strip increases during the cold rolling process, and the rolling efficiency decreases. In particular, the thermal conductivity of this type of nickel-based corrosion-resistant alloy decreases, and plastic deformation heat and friction heat are generated during the continuous rolling process. The heat generated continuously in a short period of time cannot be dissipated in time, which will easily cause cold / hot cracks and burns on the surface of the nickel-based corrosion-resistant alloy thin strip, affecting the quality of the finished product.

[0003] In the process of continuous cold rolling of traditional nickel-based corrosion-resistant alloy thin strips, the generation of plastic deformation heat is reduced by reducing the thickness of a single rolling, and the heat dissipation is accelerated by installing a water-cooling structure; however, due to the limitations of the rolling process and the space in the rolling workshop, the generation of plastic deformation heat cannot be reduced by infinitely reducing the rolling thickness, which will cause cold / hot cracks and burns on the surface of the nickel-based corrosion-resistant alloy thin strips, affecting the quality of the finished product. Summary of the invention

[0004] In view of the above problems, the present invention provides a method and device for preparing nickel-based corrosion-resistant alloy thin strips, which can reduce thermal cracks and burns generated on the surface of nickel-based corrosion-resistant alloy thin strips and ensure the surface quality of the finished nickel-based corrosion-resistant alloy thin strips.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A method for preparing a nickel-based corrosion-resistant alloy thin strip, comprising using a double-roll rolling device to continuously roll the nickel-based corrosion-resistant alloy strip, wherein the double-roll rolling device comprises a rolling device 1 and a rolling device 2, wherein the nickel-based corrosion-resistant alloy thin strip comprises the following components by mass percentage: C≤0.006%, Mo 12.5~18%, Cu 1.5~2.2%, Fe≤1.10%, Si≤0.05%, O≤0.006%, Cr 23.0~30.0%, Ti 0.3%~2%, Nb 0.5~3%, and the rest are Ni, some impurities and necessary metal or non-metal elements; comprising the following steps: S1, forging, hot rolling and cold rolling the cast nickel-based corrosion-resistant alloy original ingot to form a thinner strip one; S2, rolling the thinner strip one obtained in step S1 through rolling equipment one to form a thinner strip two; S3, rolling the thinner strip two obtained in step S2 through rolling equipment two to form a thinner strip three; wherein, during the rolling process, the rolling rate of the rolling equipment two is controlled to be lower than the rolling rate of the rolling equipment one, the nickel-based corrosion-resistant alloy strip between the rolling equipment one and the rolling equipment two is pulled along a direction perpendicular to the conveying direction of the nickel-based corrosion-resistant alloy strip to form a curved nickel-based corrosion-resistant alloy strip, and the curved nickel-based corrosion-resistant alloy strip between the rolling equipment one and the rolling equipment two is air-cooled.

[0007] Preferably, the nickel-based corrosion-resistant alloy strip between rolling equipment one and rolling equipment two is pulled by an adjusting device along a direction perpendicular to the conveying direction of the nickel-based corrosion-resistant alloy strip to form a nickel-based corrosion-resistant alloy strip in a curved shape.

[0008] Preferably, the adjustment device comprises an adjustment component 2 for pulling the nickel-based corrosion-resistant alloy strip to bend upward and / or an adjustment component 1 for pulling the nickel-based corrosion-resistant alloy strip to bend downward.

[0009] Preferably, a gas cooling device is installed between the rolling equipment one and the rolling equipment two, and the surface of the nickel-based corrosion-resistant alloy strip is air-cooled by the gas cooling device. The gas cooling device includes a movably arranged gas cooling platform. During the process of the nickel-based corrosion-resistant alloy strip being pulled and bent, the gas cooling platform moves synchronously with the nickel-based corrosion-resistant alloy strip to complete continuous air cooling.

[0010] Preferably, the gas cooling device also includes telescopic joints three and four arranged at intervals, and the telescopic joints three and four are both installed at the lower end of the gas cooling platform to control the gas cooling platform to move synchronously with the nickel-based corrosion-resistant alloy strip to complete continuous air cooling.

[0011] A device for preparing nickel-based corrosion-resistant alloy thin strips, equipment for nickel-based corrosion-resistant alloy thin strips, including a double-roll rolling equipment for rolling nickel-based corrosion-resistant alloy strips, the double-roll rolling equipment including rolling equipment one and rolling equipment two arranged at intervals, an adjusting device for pulling the nickel-based corrosion-resistant alloy strip to bend is installed between the rolling equipment one and the rolling equipment two, and also includes a gas cooling device for air-cooling the nickel-based corrosion-resistant alloy strip, during the rolling process, the rolling rate of the rolling equipment two is controlled to be less than the rolling rate of the rolling equipment one, the nickel-based corrosion-resistant alloy strip between the rolling equipment one and the rolling equipment two is pulled by the adjusting device along a direction perpendicular to the conveying direction of the nickel-based corrosion-resistant alloy strip to form a nickel-based corrosion-resistant alloy strip in a curved shape, and the bent nickel-based corrosion-resistant alloy strip between the rolling equipment one and the rolling equipment two is air-cooled by the gas cooling device.

[0012] Preferably, the gas cooling device includes a gas cooling platform, a plurality of pumping gas grooves are opened on the surface of the gas cooling platform, and cooling gas is blown toward the surface of the nickel-based corrosion-resistant alloy strip through the pumping gas grooves for air cooling. The adjusting component one includes cooling roller one, and the adjusting component two includes cooling roller two. Water cooling systems are respectively installed in cooling roller one and cooling roller two.

[0013] Preferably, both the cooling roller one and the cooling roller two have built-in temperature detection devices, and a plurality of pump air grooves near one side of the regulating component one are connected in parallel to form a cooling circuit one, and the cooling circuit one is connected in series with a first flow control device, and the first flow control device is connected to the regulating component one, and the amount of cooling gas passing through the first flow control device is controlled according to the temperature of one place in the regulating component; a plurality of pump air grooves near one side of the regulating component two are connected in parallel to form a cooling circuit two, and the cooling circuit two is connected in series with a second flow control device, and the second flow control device is connected to the regulating component two, and the amount of cooling gas passing through the second flow control device is controlled according to the temperature of the regulating component two.

[0014] Preferably, the flow control device includes a flow control housing, in which a control piston is sealingly and slidingly connected, and the interior of the flow control housing is divided into a first control chamber and a second control chamber by the control piston. A temperature detection device is built into cooling roller one and cooling roller two, and the interior of the temperature detection device is filled with a low-boiling point liquid. The temperature detection device is connected to the corresponding first control chamber through a connecting joint, and a valve body assembly fixedly connected to the control piston is installed in the second control chamber.

[0015] Preferably, the valve body assembly includes a flow control plate, a flow control opening is opened on the surface of the flow control plate, gas conducting joints are installed on both sides of the flow control opening, and the flow control plate is located on the moving path of the gas conducting joint.

[0016] The beneficial effects of the present invention are:

[0017] Compared with the existing simple water cooling structure, the cooling structure that combines air cooling and water cooling can efficiently cool the nickel-based corrosion-resistant alloy thin strip on the conveying path, reduce its own temperature, and reduce the thermal cracks and burns on the surface of the nickel-based corrosion-resistant alloy thin strip; at the same time, the optimized process can optimize the strip conveying path, slow down the rolling rate at the end of the strip, extend its air cooling time, further reduce its own temperature, and ensure the surface quality of the finished nickel-based corrosion-resistant alloy thin strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the main structure.

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of the top view structure.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the gas cooling device of the present invention.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the adjusting device of the present invention.

[0023] Figure 6 Schematic diagram of the internal structure of the flow control device of the present invention.

[0024] In the figure: 100, double-roll rolling equipment; 1001, rolling equipment 1; 1002, rolling equipment 2; 110, mounting base; 120, rolling roller; 130, guide roller; 200, nickel-based corrosion-resistant alloy strip; 300, adjustment device; 310, adjustment component 1; 311, telescopic joint 1; 312, rotation joint 1; 313, cooling roller 1; 320, adjustment component 2; 321, telescopic joint 2; 322, rotation joint 2; 323, cooling roller 2; 324, winch lifting platform; 400, gas cooling device; 410, gas cooling platform; 411, air vent; 412, pump air groove; 420, telescopic joint three; 430, telescopic joint four; 440, connecting joint; 500, flow control device; 510, flow control housing; 511, limiting protrusion; 512, connecting joint; 520, control piston; 530, flow control plate; 531, flow control opening; 540, gas conducting joint. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] The present invention provides a nickel-based corrosion-resistant alloy thin strip. The nickel-based corrosion-resistant alloy thin strip comprises the following components by mass percentage: C≤0.006%, Mo 12.5-18%, Cu 1.5-2.2%, Fe≤1.10%, Si≤0.05%, O≤0.006%, Cr 23.0-30.0%, Ti 0.3%-2%, Nb 0.5-3%, and the rest is Ni, some impurities and necessary metal or non-metal elements.

[0027] By adding a certain amount of Cr into the nickel-based corrosion-resistant alloy, a dense oxide film can be formed inside the alloy, mainly Cr2O3, which can play a good protective role, reduce the corrosion effect of the external environment on the alloy matrix, and ensure the overall integrity of the alloy.

[0028] Adding a certain amount of Ti and Nb to nickel-based corrosion-resistant alloys can also reduce corrosion. Ti and Cr can interweave on the surface of nickel-based corrosion-resistant alloys to form a reinforced passivation film with higher electrochemical stability. At the same time, Ti and Cr can promote the formation of each other's oxides, further reducing the corrosion efficiency of nickel-based corrosion-resistant alloys. Niobium is a strong carbide-forming element that can form stable carbides, thereby enhancing the strength and hardness of the alloy while helping to maintain the integrity of the passivation film.

[0029] Ti, Nb and Cr are added during the alloy smelting process. The two are mixed in a certain proportion and heated to a molten state to ensure that Ti and Cr can be evenly distributed in the nickel-based corrosion-resistant alloy. During the casting and processing stages, the cooled castings need to be processed. For the processing of nickel-based corrosion-resistant alloy thin strips, multiple rolling processes are ultimately required.

[0030] Since a certain amount of Ti, Nb and Cr are added to the nickel-based corrosion-resistant alloy, it has higher hardness and strength. The rolling pressure of the nickel-based corrosion-resistant alloy thin strip increases during the cold rolling process, and the rolling efficiency decreases. In particular, the thermal conductivity of this type of nickel-based corrosion-resistant alloy decreases, and plastic deformation heat and friction heat are generated during the continuous rolling process. The heat generated continuously in a short period of time cannot be dissipated in time, which will easily cause cold / hot cracks and burns on the surface of the nickel-based corrosion-resistant alloy thin strip, affecting the quality of the finished product.

[0031] In the process of continuous cold rolling of traditional nickel-based corrosion-resistant alloy thin strips, the generation of plastic deformation heat is reduced by reducing the thickness of a single rolling, and the heat dissipation is accelerated by installing a water-cooling structure; however, due to the limitations of the rolling process and the space in the rolling workshop, the generation of plastic deformation heat cannot be reduced by infinitely reducing the rolling thickness. Similarly, the single water-cooling structure also makes it difficult to quickly dissipate heat due to the small contact area, which still causes cold / hot cracks and burns on the surface of the nickel-based corrosion-resistant alloy thin strips, affecting the quality of the finished product.

[0032] In order to solve the above problems, a method for preparing a nickel-based corrosion-resistant alloy thin strip is first proposed, and the method comprises the following steps:

[0033] S1. The cast nickel-based corrosion-resistant alloy original ingot is forged, hot-rolled and cold-rolled to form a thinner strip; wherein the nickel-based corrosion-resistant alloy thin strip includes the following components by mass percentage: C≤0.006%, Mo 12.5~18%, Cu 1.5~2.2%, Fe≤1.10%, Si≤0.05%, O≤0.006%, Cr 23.0~30.0%, Ti 0.3%~2%, Nb 0.5~3%, and the rest is Ni, some impurities and necessary metal or non-metal elements.

[0034] S2. The thinner strip material 1 obtained in step S1 is rolled through a rolling device 1001 to form a thinner strip material 2.

[0035] S3. The thinner strip material 2 obtained in step S2 is rolled by the rolling equipment 2 1002 to form a thinner strip material 3; wherein the thickness of the strip material 3 meets the processing requirements, and the specific thickness size needs to be determined according to the use environment of the nickel-based corrosion-resistant alloy thin strip material.

[0036] The following is an explanation through an example, in which the thickness of strip three is less than 0.1 mm, the thickness of strip one is 0.12 mm~0.13 mm, strip one is rolled to about 0.11 by rolling equipment one 1001 to obtain strip two, and then strip two is directly rolled to less than 0.1 mm by rolling equipment two 1002 to directly obtain strip three.

[0037] The conventional rolling process is carried out continuously, and the rolling rate is controlled according to the thickness variation of the rolling equipment 100, so as to control the rolling conveying rates between the multiple rolling equipments 100 to be adapted to each other, thereby realizing continuous cold rolling of the strip.

[0038] In order to increase the cooling rate of the strip during the cold rolling process, especially to achieve the cooling rate in the later stage of strip rolling, reduce the thermal cracks and burns on the surface of the nickel-based corrosion-resistant alloy thin strip, and ensure the quality of the finished product; a gas cooling device 400 and an adjusting device 300 are additionally provided between the rolling equipment 1001 and the rolling equipment 2 1002; the gas cooling device 400 here is located on the moving path of the nickel-based corrosion-resistant alloy strip 200, extends along the conveying direction of the nickel-based corrosion-resistant alloy strip 200, and can blow out cooling gas to efficiently cool the surface of the nickel-based corrosion-resistant alloy strip 200.

[0039] At the same time, in order to extend the cooling time, the rolling rates of the rolling equipment 1001 and the rolling equipment 2 1002 are adjusted, and the rolling rate of the last rolling equipment 2 1002 is reduced to extend the cooling time of the nickel-based corrosion-resistant alloy strip 200 by the gas cooling device 400, so as to achieve sufficient cooling of the nickel-based corrosion-resistant alloy strip 200, fully release the heat inside the nickel-based corrosion-resistant alloy strip 200, reduce the temperature of the nickel-based corrosion-resistant alloy strip 200 to below the appropriate threshold, reduce the temperature of the nickel-based corrosion-resistant alloy strip 200 when rolled at the rolling equipment 2 1002, and reduce the thermal cracks and burns on the surface of the nickel-based corrosion-resistant alloy thin strip.

[0040] When the nickel-based corrosion-resistant alloy strip 200 between rolling equipment 1001 and rolling equipment 2 1002 is extended to a certain length, the rolling equipment 2 1002 can be controlled to continue rolling the nickel-based corrosion-resistant alloy strip 200, and the rolling equipment 1001 can be controlled to shut down the rolling process. During this process, the nickel-based corrosion-resistant alloy strip 200 between the two is consumed by the rolling equipment 2 1002, and the overall process can be carried out cyclically to ensure the continuity of the overall production and processing of the nickel-based corrosion-resistant alloy strip 200.

[0041] When the rolling rate of rolling equipment 1001 remains unchanged, the rolling rate of rolling equipment 2 1002 is reduced. At this time, the length of the nickel-based corrosion-resistant alloy strip 200 between rolling equipment 1001 and rolling equipment 2 1002 increases. In order to guide this part of excess nickel-based corrosion-resistant alloy strip 200 and avoid the excess nickel-based corrosion-resistant alloy strip 200 from affecting the normal rolling and transportation, the adjusting device 300 is installed between rolling equipment 1001 and rolling equipment 2 1002. The adjusting device 300 can change the moving path of the nickel-based corrosion-resistant alloy strip 200 between rolling equipment 1001 and rolling equipment 2 1002, and store the excess nickel-based corrosion-resistant alloy strip 200, thereby ensuring that the nickel-based corrosion-resistant alloy strip 200 between rolling equipment 1001 and rolling equipment 2 1002 is in a relatively taut state, thereby ensuring its normal transportation process.

[0042] At the same time, the nickel-based corrosion-resistant alloy strip 200 can be adjusted to be in a relatively taut and orderly state through the adjustment device 300, so as to ensure that the gas cooling device 400 can be located on the outside and perform continuous and stable air blowing cooling with the nickel-based corrosion-resistant alloy strip 200, thereby ensuring the normal rolling and transportation of the nickel-based corrosion-resistant alloy strip 200 and maximizing the air cooling effect of the gas cooling device 400.

[0043] It should be noted here that the gas cooling device 400 here includes a gas cooling platform 410, and a plurality of pumping grooves 412 are opened on the surface of the gas cooling platform 410. The pumping grooves 412 here are connected to cold air, and cold air can be continuously blown out from the pumping grooves 412. During the cooling process, the gas cooling platform 410 and the nickel-based corrosion-resistant alloy strip 200 are in a relatively fitted state, and the blown cold air can flow in all directions, thereby realizing air cooling of the entire surface of the nickel-based corrosion-resistant alloy strip 200.

[0044] The pump gas tank 412 can be Figure 4 As shown in the transverse arrangement, the direction of the transverse arrangement is perpendicular to the direction in which the nickel-based corrosion-resistant alloy strip 200 is conveyed. The pump air grooves 412 can also be arranged longitudinally, that is, arranged along the direction in which the nickel-based corrosion-resistant alloy strip 200 is conveyed. The strip-shaped pump air grooves 412 can blow out cooling gas from various positions to achieve rapid cooling of the surface of the nickel-based corrosion-resistant alloy strip 200.

[0045] Through the combination of air cooling and water cooling, the surface temperature of the nickel-based corrosion-resistant alloy strip 200 can be reduced to the greatest extent, the temperature after rolling by the rolling equipment 1002 can be reduced, the thermal cracks and burns on the surface of the nickel-based corrosion-resistant alloy thin strip can be reduced, and the quality of the finished nickel-based corrosion-resistant alloy thin strip can be ensured.

[0046] It should also be noted that the gas cooling platform 410 here is movable and can change synchronously with the change of the deflection angle of the nickel-based corrosion-resistant alloy strip 200; the gas cooling platform 410 here can be arranged below the nickel-based corrosion-resistant alloy strip 200 to facilitate adjustment and control, and an adjustment device is installed below the gas cooling platform 410, which can adjust the deflection angle of the gas cooling platform 410 to meet the cooling needs of the nickel-based corrosion-resistant alloy strip 200 under different circumstances.

[0047] The adjusting device here can be selected as a combination of telescopic joint three 420 and telescopic joint four 430. Two groups of connecting joints 440 are installed on the lower end surface of the gas cooling platform 410. The two groups of connecting joints 440 correspond to telescopic joint three 420 and telescopic joint four 430 respectively to realize drive control. Both groups of connecting joints 440 can be movably arranged, or one of the groups of connecting joints 440 can be selected to be in a state of active connection to meet the deflection of the gas cooling platform 410 to different angles.

[0048] Through the coordinated control of telescopic joint three 420 and telescopic joint four 430, the extended length of telescopic joint three 420 and telescopic joint four 430 can be adjusted to adaptively adjust the deflection angle of the gas cooling platform 410, and the gas cooling platform 410 can be controlled to deflect toward the first side or the second side to achieve deflection control, thereby meeting the adaptive cooling requirements of nickel-based corrosion-resistant alloy strips 200 in different conveying forms.

[0049] The telescopic joint three 420 and the telescopic joint four 430 here can be selected as the existing hydraulic telescopic structure or the electric telescopic structure, and the telescopic joint three 420 and the telescopic joint four 430 are both precisely coordinated and controlled by the electronic control structure; two distance measuring devices can be installed on the upper surface of the gas cooling platform 410, and the distance between the gas cooling platform 410 and the nickel-based corrosion-resistant alloy strip 200 is measured by the distance measuring devices. The position state between the gas cooling platform 410 and the nickel-based corrosion-resistant alloy strip 200 can be determined by judging the difference measured by the two distance measuring devices, and a control signal is sent to the telescopic joint three 420 and the telescopic joint four 430 to control the telescopic joint three 420 or the telescopic joint four 430 to achieve adaptive adjustment of the deflection angle of the gas cooling platform 410.

[0050] The distance measuring device here can select an existing laser distance measuring device, and its control algorithm can be calculated according to the existing algorithm, which will not be described in detail here.

[0051] It should also be noted that a plurality of air vents 411 are installed on the surface of the gas cooling platform 410. The air vents 411 here are in a completely through state, allowing the cooling gas to pass through. The air vents 411 here and the pumping gas grooves 412 can be arranged alternately. After the gas blown out of the pumping gas grooves 412 extends to the surroundings, part of the cooling gas can carry the heat and be quickly discharged from the air vents 411, thereby achieving rapid heat dissipation.

[0052] The above-mentioned structural design is particularly suitable for nickel-based corrosion-resistant alloy strips 200 with larger sizes. After the rate of blowing out the cooling gas increases, it will not exert excessive pressure on the nickel-based corrosion-resistant alloy strip 200, and will not affect the normal transportation of the nickel-based corrosion-resistant alloy strip 200. At the same time, the exhaust gas after heat exchange can be quickly discharged from the vent 411. When the gas cooling platform 410 and the nickel-based corrosion-resistant alloy strip 200 are closely fitted, the heat dissipation can be improved by increasing the gas flow rate, thereby further accelerating the cooling of the surface of the nickel-based corrosion-resistant alloy strip 200.

[0053] The adjusting device 300 here is installed on the moving path of the nickel-based corrosion-resistant alloy strip 200. The nickel-based corrosion-resistant alloy strip 200 can be tightened by the adjusting device 300. The excess part of the nickel-based corrosion-resistant alloy strip 200 can be staggered from the normal conveying path of the nickel-based corrosion-resistant alloy strip 200 by the adjusting device 300 to ensure that the nickel-based corrosion-resistant alloy strip 200 is in a relatively tightened state for continuous conveying.

[0054] In order to ensure the normal transportation of the nickel-based corrosion-resistant alloy strip 200, the adjusting device 300 here can control the nickel-based corrosion-resistant alloy strip 200 to move upward or downward, and control the nickel-based corrosion-resistant alloy strip 200 to be in a bending state on the transportation path. The excess amount of the nickel-based corrosion-resistant alloy strip 200 can be accommodated through the excess bending part, thereby ensuring that the nickel-based corrosion-resistant alloy strip 200 is in a relatively taut state during the transportation process.

[0055] The adjusting device 300 here can select adjusting component 1 310, adjusting component 2 320 or a combination of adjusting component 1 310 and adjusting component 2 320; the nickel-based corrosion-resistant alloy strip 200 here passes through the bottom of adjusting component 1 310, and the nickel-based corrosion-resistant alloy strip 200 can be controlled to move downward and bend through adjusting component 1 310; the nickel-based corrosion-resistant alloy strip 200 here passes through the top of adjusting component 2 320, and the nickel-based corrosion-resistant alloy strip 200 can be controlled to move upward and bend through adjusting component 2 320; through the above-mentioned structural design, the production needs of different types of production lines can be met, and through the combination of adjusting component 1 310 and adjusting component 2 320, the nickel-based corrosion-resistant alloy strip 200 can be controlled to form a more curved path, and the excess nickel-based corrosion-resistant alloy strip 200 between rolling equipment 1 1001 and rolling equipment 2 1002 can be pulled to ensure the normal transportation of the nickel-based corrosion-resistant alloy strip 200 between rolling equipment 1 1001 and rolling equipment 2 1002.

[0056] The adjustment component 310 here includes a cooling roller 323, a rotating joint 322 installed on both sides of the cooling roller 323 to control the rotation of the cooling roller 323, and a telescopic joint 321 to control the telescopic extension of the rotating joint 322; and a winch lifting platform 324 is also installed on the upper end of the telescopic joint 321, and a winch lifting device is installed on the upper end of the winch lifting platform 324, which can control the overall lifting and lowering of the adjustment component 320 within a larger range.

[0057] The winch lifting device can be used to control the cooling roller 2 323 to have a larger and faster lifting control range as a whole; the telescopic joint 2 321 can be used to finely adjust the lifting of the cooling roller 2 323 to ensure that the nickel-based corrosion-resistant alloy strip 200 is in a relatively appropriate tensioned state, ensuring that the nickel-based corrosion-resistant alloy strip 200 can move normally while avoiding damage caused by excessive tension.

[0058] The adjustment component 310 here includes a telescopic joint 311, a rotating joint 312 and a cooling roller 313. Similarly, the rotation of the cooling roller 313 is controlled by the rotating joint 312, and the up and down movement of the cooling roller 313 is controlled by the telescopic joint 311. The nickel-based corrosion-resistant alloy strip 200 can be limited from above by the cooling roller 313, and the lifting and lowering of the cooling roller 313 can be controlled to pull the nickel-based corrosion-resistant alloy strip 200, thereby realizing the tension control of the nickel-based corrosion-resistant alloy strip 200 during the bending process.

[0059] It should also be noted that the cooling roller 2 323 and the cooling roller 1 313 here can be selected as rollers with a built-in water cooling system to control the directional flow of cooling water. Efficient heat exchange can be carried out during the contact between the cooling roller 2 323 and the cooling roller 1 313 and the nickel-based corrosion-resistant alloy strip 200, thereby further improving the cooling effect of the nickel-based corrosion-resistant alloy strip 200 and further reducing thermal cracks and burns on the surface of the nickel-based corrosion-resistant alloy thin strip.

[0060] A plurality of pump air grooves 412 near one side of the regulating component 310 are connected in parallel to form a cooling circuit 1, and the cooling circuit 1 is connected in series with a first flow control device 500, wherein the first flow control device 500 is connected to the regulating component 310, and can control the amount of airflow passing through the flow control device 500 according to the temperature at the regulating component 310, thereby achieving control over the ventilation volume within the cooling circuit 1, and can control the cooling of the nickel-based corrosion-resistant alloy strip 200 at the rear end of its transportation according to the temperature of the nickel-based corrosion-resistant alloy strip 200 at the regulating component 310.

[0061] The higher the temperature of the nickel-based corrosion-resistant alloy strip 200 at the regulating component 310, the flow control device 500 can be controlled to be at a larger ventilation volume, more cooling gas can be blown out per unit time, the cooling of the nickel-based corrosion-resistant alloy strip 200 can be accelerated at the rear end, and the nickel-based corrosion-resistant alloy strip 200 can be controlled to be in a suitable temperature range for rolling again.

[0062] A plurality of pump air grooves 412 near one side of the regulating component 2 320 are connected in parallel to form a cooling circuit 2, and a second flow control device 500 is connected in series to the cooling circuit 2. The flow control device 500 here is connected to the regulating component 2 320, and can control the amount of airflow passing through the second flow control device 500 according to the temperature at the regulating component 2 320, thereby achieving control of the ventilation volume in the cooling circuit 2, and can control the temperature of the nickel-based corrosion-resistant alloy strip 200 at the conveying front end according to the temperature range of the nickel-based corrosion-resistant alloy strip 200 in the regulating component 2 320.

[0063] Similarly, the higher the temperature of the nickel-based corrosion-resistant alloy strip 200 at the adjusting component 2 320, the greater the ventilation volume per unit time of the flow control device 500 can be controlled, and more cooling gas can be blown out per unit time, which can accelerate the cooling of the front-end nickel-based corrosion-resistant alloy strip 200 to reduce the cooling burden at the adjusting component 2 320, and ensure that the temperature of the nickel-based corrosion-resistant alloy strip 200 that finally enters the rolling equipment 2 1002 for rolling is reduced to an appropriate range.

[0064] Through cooling circuit one, temperature adjustment can be performed from the front end, and timely temperature reduction control can be performed on the nickel-based corrosion-resistant alloy strip 200 passing through the adjustment component one 310; through cooling circuit two, temperature adjustment control can be performed from the rear end, and the temperature of the nickel-based corrosion-resistant alloy strip 200 can be controlled in advance according to the cooling load of the rear-end adjustment component two 320, so that gradient temperature reduction control of the nickel-based corrosion-resistant alloy strip 200 can be achieved, and effective temperature reduction control can be achieved during the extension and movement of the nickel-based corrosion-resistant alloy strip 200.

[0065] The flow control device 500 here is connected and controlled internally with the cooling roller 2 323 and the cooling roller 1 313, and can detect the temperature inside them and perform ventilation control according to the detection results; the flow control device 500 here can select a combination of an existing solenoid valve and a temperature control detection element, detect the temperature of the cooling roller 2 323 and the cooling roller 1 313 through the temperature control detection element, and control the ventilation volume of the solenoid valve according to the detection results to achieve regulation control.

[0066] The present invention provides another hydraulic structure for temperature sensing control, which has a simple control structure, does not require high-precision control elements, has a good control effect, and has precise ventilation control.

[0067] Specifically, the flow control device 500 here includes a flow control housing 510, in which a control piston 520 is sealed and slidably connected, and the interior of the flow control housing 510 is divided into a first control chamber and a second control chamber by the control piston 520. A temperature detection device is built into the cooling roller 1 313 and the cooling roller 2 323. The temperature detection device here is filled with a low-boiling point liquid, and the temperature detection device here is connected to the first control chamber through a connecting joint 512.

[0068] When the temperature inside cooling roller 1 313 or cooling roller 2 323 rises, the low-boiling-point liquid can be controlled to vaporize and expand, and the vaporized and expanded low-boiling-point liquid can enter the first control chamber to push the control piston 520 to move in the first direction; on the contrary, after the temperature drops, the control piston 520 is pushed to move in the second direction; a valve body assembly is installed in the second chamber, and the change in the ventilation volume of the valve body assembly can be controlled during the movement of the control piston 520.

[0069] Two limit protrusions 511 can also be installed on the inner wall of the flow control housing 510. The two limit protrusions 511 are arranged at intervals to control the movement distance of the control piston 520, thereby preventing the control piston 520 from moving beyond the normal position to cause leakage of low-boiling point liquid or avoid excessive deviation in the control of the valve body assembly.

[0070] Here, an elastic component may be installed between the control piston 520 and the flow control housing 510. After the temperature drops, the control piston 520 can be quickly pushed to the initial position to reduce the ventilation volume of the cooling gas and avoid wasting resources.

[0071] It should also be noted that the valve body assembly here can be selected as a flow control plate 530, a flow control opening 531 is opened on the surface of the flow control plate 530, and gas connecting connectors 540 are installed on both sides of the flow control opening 531. The flow control plate 530 is located on the moving path of the gas connecting connector 540, and the flow control plate 530 here is fixed to the side wall of the control piston 520.

[0072] When the control piston 520 moves toward the first direction or the second direction, the flow control plate 530 can be driven to move synchronously. When the flow control plate 530 moves synchronously, the overlap area of ​​the flow control opening 531 and the gas conducting joint 540 can be automatically adjusted. The more the control piston 520 moves toward the first direction (see FIG. 2 ), the larger the overlap area of ​​the flow control opening 531 and the gas conducting joint 540 can be automatically adjusted. Figure 6The left side of the flow control plate 530 moves, the overlapping area of ​​the flow control opening 531 and the gas conducting joint 540 increases, which can increase the amount of cooling gas ventilation per unit time and enhance the cooling effect on the nickel-based corrosion-resistant alloy strip 200; on the contrary, in the process of controlling the piston 520 to move toward the second direction, the overlapping area of ​​the flow control opening 531 and the gas conducting joint 540 decreases, and the gas conducting joint 540 is in a state of being blocked by the closed area of ​​the flow control plate 530, which can reduce the gas circulation and avoid waste of resources.

[0073] It should be noted here that the flow control plate 530 and the gas conducting joint 540 need to be designed as a sealed sliding connection to ensure that the flow control plate 530 has a good shielding effect on the gas conducting joint 540 and ensure accurate regulation of the cooling gas ventilation volume.

[0074] Through the structural design of the above-mentioned flow control device 500, there is no need to install high-precision detection elements, there is no need to worry about the problem that high-precision elements cannot be installed in the rolling workshop, and there is no need to worry about the accuracy deterioration or damage caused by its long-term use; the above-mentioned low-boiling point liquid is selected according to the rolling temperature of the nickel-based corrosion-resistant alloy strip 200. Different types of nickel-based corrosion-resistant alloy thin strips, different thickness scales and different cold rolling processes have different temperature ranges; the low-boiling point liquid here is selected to avoid thermal cracks on the surface and burns.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a nickel-based corrosion-resistant alloy thin strip, characterized in that: A nickel-based corrosion-resistant alloy strip (200) is continuously rolled using a double-roll rolling device (100), wherein the double-roll rolling device (100) comprises a first rolling device (1001) and a second rolling device (1002); and the following steps are included: S1, forming a thinner strip by forging, hot rolling and cold rolling the original ingot of the cast nickel-based corrosion-resistant alloy; S2, the thinner strip material 1 obtained in step S1 is subjected to rolling processing in rolling equipment 1 (1001) to form a thinner strip material 2; S3, the thinner strip material 2 obtained in step S2 is subjected to rolling processing by a second rolling device (1002) to form a thinner strip material 3; In which, during the rolling process, the rolling rate of the second rolling device (1002) is controlled to be lower than the rolling rate of the first rolling device (1001), the nickel-based corrosion-resistant alloy strip (200) between the first rolling device (1001) and the second rolling device (1002) is pulled along a direction perpendicular to the conveying direction of the nickel-based corrosion-resistant alloy strip (200) to form a nickel-based corrosion-resistant alloy strip (200) in a curved shape, and the curved nickel-based corrosion-resistant alloy strip (200) between the first rolling device (1001) and the second rolling device (1002) is air-cooled; A gas cooling device (400) is installed between the rolling equipment 1 (1001) and the rolling equipment 2 (1002), and the surface of the nickel-based corrosion-resistant alloy strip (200) is air-cooled by the gas cooling device (400). The gas cooling device (400) includes a movably arranged gas cooling platform (410). When the nickel-based corrosion-resistant alloy strip (200) is pulled and bent, the gas cooling platform (410) moves synchronously with the nickel-based corrosion-resistant alloy strip (200) to complete continuous air cooling; The gas cooling device (400) further comprises a telescopic joint three (420) and a telescopic joint four (430) arranged at intervals, wherein the telescopic joint three (420) and the telescopic joint four (430) are both installed at the lower end of the gas cooling platform (410) and are used to control the gas cooling platform (410) to move synchronously with the nickel-based corrosion-resistant alloy strip (200) to complete continuous air cooling.

2. The method for preparing the nickel-based corrosion-resistant alloy thin strip according to claim 1, characterized in that: The nickel-based corrosion-resistant alloy strip (200) between rolling equipment 1 (1001) and rolling equipment 2 (1002) is pulled along a direction perpendicular to the conveying direction of the nickel-based corrosion-resistant alloy strip (200) by an adjusting device (300) to form a nickel-based corrosion-resistant alloy strip (200) in a curved shape.

3. The method for preparing the nickel-based corrosion-resistant alloy thin strip according to claim 2, characterized in that: The adjustment device (300) comprises an adjustment component 2 (320) for pulling the nickel-based corrosion-resistant alloy strip (200) to bend upward and / or an adjustment component 1 (310) for pulling the nickel-based corrosion-resistant alloy strip (200) to bend downward.

4. A device for preparing a nickel-based corrosion-resistant alloy thin strip, equipment for nickel-based corrosion-resistant alloy thin strip, comprising a double-roll rolling device (100) for rolling the nickel-based corrosion-resistant alloy strip (200), characterized in that: The double-roll rolling equipment (100) comprises a rolling equipment 1 (1001) and a rolling equipment 2 (1002) arranged at intervals, an adjusting device (300) for pulling the nickel-based corrosion-resistant alloy strip (200) to bend is installed between the rolling equipment 1 (1001) and the rolling equipment 2 (1002), and also comprises a gas cooling device (400) for air cooling the nickel-based corrosion-resistant alloy strip (200), and during the rolling process, the rolling rate of the rolling equipment 2 (1002) is controlled to be less than that of the rolling equipment 1 (1001). The nickel-based corrosion-resistant alloy strip (200) is pulled between the rolling equipment one (1001) and the rolling equipment two (1002) along a direction perpendicular to the conveying direction of the nickel-based corrosion-resistant alloy strip (200) by means of an adjusting device (300) to form a nickel-based corrosion-resistant alloy strip (200) in a curved shape, and the curved nickel-based corrosion-resistant alloy strip (200) between the rolling equipment one (1001) and the rolling equipment two (1002) is air-cooled by means of a gas cooling device (400); The gas cooling device (400) further comprises a telescopic joint three (420) and a telescopic joint four (430) arranged at intervals, wherein the telescopic joint three (420) and the telescopic joint four (430) are both installed at the lower end of the gas cooling platform (410) and are used to control the gas cooling platform (410) to move synchronously with the nickel-based corrosion-resistant alloy strip (200) to complete continuous air cooling.

5. The device for preparing a nickel-based corrosion-resistant alloy thin strip according to claim 4, characterized in that: The regulating device (300) comprises a regulating component 2 (320) for pulling the nickel-based corrosion-resistant alloy strip (200) to bend upward and / or a regulating component 1 (310) for pulling the nickel-based corrosion-resistant alloy strip (200) to bend downward. The gas cooling device (400) comprises a gas cooling platform (410). The surface of the gas cooling platform (410) is provided with a plurality of pumping gas grooves (412). Cooling gas is blown toward the surface of the nickel-based corrosion-resistant alloy strip (200) through the pumping gas grooves (412) for air cooling. The regulating component 1 (310) comprises a cooling roller 1 (313). The regulating component 2 (320) comprises a cooling roller 2 (323). The cooling roller 1 (313) and the cooling roller 2 (323) are respectively provided with water cooling systems.

6. The device for preparing a nickel-based corrosion-resistant alloy thin strip according to claim 5, characterized in that: The cooling roller one (313) and the cooling roller two (323) are both equipped with a built-in temperature detection device. A plurality of pump gas grooves (412) close to one side of the regulating component one (310) are connected in parallel to form a cooling circuit one. The cooling circuit one is connected in series with a first flow control device (500). The first flow control device (500) is connected to the regulating component one (310) to control the amount of cooling gas passing through the first flow control device (500) according to the temperature at the regulating component one (310). A plurality of pump gas grooves (412) near one side of the regulating component 2 (320) are connected in parallel to form a cooling circuit 2, and the cooling circuit 2 is connected in series with a second flow control device (500). The second flow control device (500) is connected to the regulating component 2 (320) to control the amount of cooling gas passing through the second flow control device (500) according to the temperature at the regulating component 2 (320).

7. The device for preparing a nickel-based corrosion-resistant alloy thin strip according to claim 6, characterized in that: The flow control device (500) includes a flow control housing (510), a control piston (520) is sealingly and slidably connected inside the flow control housing (510), and the interior of the flow control housing (510) is divided into a first control chamber and a second control chamber by the control piston (520). A temperature detection device is built into the cooling roller one (313) and the cooling roller two (323), and the temperature detection device is filled with a low-boiling point liquid. The temperature detection device is connected to the corresponding first control chamber through a connecting joint (512), and a valve body assembly fixedly connected to the control piston (520) is installed in the second control chamber.

8. The device for preparing a nickel-based corrosion-resistant alloy thin strip according to claim 7, characterized in that: The valve body assembly comprises a flow control plate (530), a flow control opening (531) is formed on the surface of the flow control plate (530), gas conduction joints (540) are installed on both sides of the flow control opening (531), and the flow control plate (530) is located on the moving path of the gas conduction joint (540).

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