Method and device for solving casting bleed-out of nitrogen-containing cobalt-chromium-molybdenum master alloy bar

Abstract

The invention discloses a method and device for solving casting bleed-out of a nitrogen-containing cobalt-chromium-molybdenum mother alloy bar, and the method comprises the following steps: pressing operation: driving a lower pressing roller to perform fixed-axis rotation on the inner wall of a rectangular through groove through a motor, so that an upper pressing roller and a lower pressing roller synchronously roll an aluminum silicate felt, and the density of the aluminum silicate felt is increased; cutting operation: an eccentric block is eccentrically placed on a second belt pulley, so that a cutting blade can perform equidistant cutting on the rolled aluminum silicate felt on the surface of the workbench, the accuracy of the size of the mold is ensured, and fixed operation: during cutting, a sleeve rod drives a pressing plate to synchronously move downwards, so that the pressing plate can be stably pressed on the aluminum silicate felt; displacement or deformation of the aluminum silicate felt in the cutting process is avoided, and it is guaranteed that the surface of the cut aluminum silicate felt is smooth.

Description

Technical Field

[0001] The invention relates to the technical field of solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars, and in particular to a method and a device for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars. Background Art

[0002] In the manufacturing field of nitrogen-containing cobalt-chromium-molybdenum high-temperature master alloy, the production of nitrogen-containing cobalt-chromium-molybdenum materials requires high casting temperatures and high requirements for refractory auxiliary materials, especially the tolerance requirements of the most important auxiliary material, aluminum silicate felt, which has a great impact on casting leakage. If the aluminum silicate felt cannot withstand the erosion of nitrogen-containing cobalt-chromium-molybdenum steel liquid, it will cause steel leakage of the steel liquid, affecting the production yield and causing cost increase. The present invention is mainly to improve the mold auxiliary material process for producing nitrogen-containing cobalt-chromium-molybdenum master alloy bars, and aims to solve the problem that the aluminum silicate felt will not be corroded and melted when the nitrogen-containing cobalt-chromium-molybdenum steel liquid continuously erodes the aluminum silicate felt, thereby improving the yield of nitrogen-containing cobalt-chromium-molybdenum bars and reducing production costs.

[0003] Commonly used aluminum silicate felt is a refractory insulation material, which is mainly composed of aluminum oxide (40%-45%) and silicon oxide (53%-58%). A small amount of binder is added and a green billet with a certain strength is obtained after aging treatment. It is then dried to become a semi-finished product, which is then cut and divided into standard rolls. At present, it is most widely used in the field of high-temperature alloy master alloy manufacturing. It is widely used in steel pipe mold assembly, mainly used between the refractory diverter plate and the steel pipe mold, and used to seal between the upper port of the steel pipe mold and the refractory diverter plate material to prevent leakage during molten steel casting due to gaps in the height difference of the steel pipe mold. It is a high-temperature resistant auxiliary material, generally with a temperature resistance below 1600℃. It is widely used in the manufacturing of high-temperature alloys such as nickel-based, iron-based and cobalt-based alloys. However, when producing nitrogen-containing cobalt-chromium-molybdenum materials (1520-1600℃), the aluminum silicate felt will be corroded and melted, causing the molten steel to leak from the water inlet of the aluminum silicate felt, resulting in a very low casting yield, high cost of leaked materials, and difficulty in cleaning up scattered solidified steel.

[0004] The existing Chinese patent with publication number CN219254516U includes a base plate, both sides of one side of the top of the base plate are fixed with fixed rods, the top of the base plate is provided with a fixed assembly, the fixed assembly includes a rotating shaft, a forward and reverse motor and a cutting assembly, the rotating shaft is rotatably arranged at the top between the two fixed rods through a bearing, the forward and reverse motor is fixedly arranged at the top of one side of one of the fixed rods, the output shaft of the forward and reverse motor is fixedly connected to one end of the rotating shaft, a first slide groove is opened in the middle of the other side of the top of the base plate, a first slider is slidably provided on the inner wall of the first slide groove, a fixed plate is fixedly provided on the top of the first slider, and an L-shaped plate is fixedly provided on one side of the top of the fixed plate.

[0005] When the above device is in use, the forward and reverse motors arranged in the fixed component drive the rotating shaft to rotate for winding or unwinding, and the first electric hydraulic cylinder drives the first slider to move to the required cutting distance in the first slide groove. However, in actual use, since the common aluminum silicate felt has a density of 110-146kg / m³, a thickness of generally 20-30mm, and a relatively loose interior, when used in the production of nitrogen-containing cobalt, chromium, and molybdenum materials, the aluminum silicate felt is prone to corrosion by molten steel, resulting in the molten steel running out, causing the product to be scrapped, and greatly increasing the production cost. Therefore, it is difficult to suppress the thickness of the aluminum silicate felt.

[0006] Therefore, we propose a method and device to solve the problem of steel leakage in casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars. Summary of the invention

[0007] The purpose of the present invention is to provide a method and device for solving the problem of steel leakage in casting of nitrogen-containing cobalt-chromium-molybdenum master alloy rods, which has the advantage of suppressing the thickness of aluminum silicate felt and solves the problems in the background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a method and device for solving the problem of steel leakage in casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars, comprising the following steps: S1. Pressing operation: The motor drives the lower pressing roller to rotate on the inner wall of the rectangular through groove, so that the upper pressing roller and the lower pressing roller rotate relative to each other to press and convey the aluminum silicate felt, so that the thickness of the aluminum silicate felt after rolling is 6 mm, thereby improving the physical strength of the aluminum silicate felt; S2, cutting operation: the first pulley is driven to rotate by the lower pressure roller, so that the transmission belt can drive the second pulley to rotate on a fixed axis, and the eccentric block is eccentrically placed on the second pulley, so that the cutting blade can cut the aluminum silicate felt rolled on the surface of the worktable according to the required mold size under the action of the n-shaped frame to ensure the accuracy of the mold size; S3. Fixed operation: During cutting, the cutting blade moves downward under the action of the n-shaped frame, and the sleeve rod drives the pressing plate to move downward synchronously. When the pressing plate contacts the aluminum silicate felt, the spring is compressed, so that the pressing plate can be firmly pressed on the aluminum silicate felt, ensuring stability during the cutting process, avoiding displacement or deformation of the aluminum silicate felt during the cutting process, and ensuring that the surface of the aluminum silicate felt after cutting is flat.

[0009] Preferably, brackets for supporting the workbench and placing it on the ground are fixedly connected at symmetrical positions on both sides of the bottom of the workbench, and a winding roller is penetrated and rotatably connected to the opposite surface of one end of the workbench, and aluminum silicate felt is rolled and stored on the outer contour of the winding roller, and a rectangular through groove is opened at the end of the workbench close to the winding roller, and a lower pressure roller driven by a power mechanism is penetrated and rotatably connected to the inner wall of the rectangular through groove, and upper pressure rollers for rolling the aluminum silicate felt are penetrated and rotatably connected to the corresponding positions on both sides of the workbench with the lower pressure roller, and transmission gears for meshing transmission are coaxially fixed to the lower pressure roller and the upper pressure roller on the same side, and a cutting mechanism for cutting the pressed aluminum silicate felt is provided on the workbench.

[0010] Preferably, the cutting mechanism includes U-shaped frames fixedly connected to both sides of the workbench at symmetrical positions away from one end of the winding roller, both U-shaped frames are penetrated and fixedly connected with a cylindrical shell, and the cylindrical shells on both sides are penetrated and fixedly connected with an n-shaped frame for lifting and reciprocating movement.

[0011] Preferably, a cutting blade for cutting the aluminum silicate felt is fixedly connected to the n-shaped frame, and a cutting groove for the cutting blade to cut the aluminum silicate felt is opened on the workbench at a position corresponding to the cutting blade, and an auxiliary mechanism for driving the cutting blade to cut the aluminum silicate felt at equal intervals on the surface of the workbench is provided on the bracket.

[0012] Preferably, the auxiliary mechanism includes a side of one of the brackets close to the n-shaped frame, which is penetrated and connected to a second pulley for fixed-axis rotation, and the end of the lower pressure roller close to the second pulley is coaxially fixedly connected to the first pulley, and the outer contours of the first pulley and the second pulley are provided with a transmission belt that drives the second pulley to rotate on the fixed axis.

[0013] Preferably, the second pulley is fixedly connected to an eccentric block deviating from the center position for pulling the n-shaped frame to move up and down, and a rectangular frame is sleeved on the outer contour of the eccentric block, and the rectangular frame is fixedly connected to the n-shaped frame.

[0014] Preferably, the n-shaped frame is provided with an auxiliary mechanism for fixing the aluminum silicate felt, the auxiliary mechanism includes a sleeve rod fixedly connected to the outer contour of the n-shaped frame near the symmetrical position on both sides, the inner walls of the sleeve rod on both sides are movably connected with an insertion rod for lifting and reciprocating movement, and the bottom ends of the two insertion rods are fixedly connected to a pressure plate for fixing the aluminum silicate felt on the workbench.

[0015] Preferably, springs guiding the pressure plate to perform reset movement are fixedly connected to the opposing surfaces of the two sleeve rods and the pressure plate, and the water storage tank is sleeved on the outer contour of the insertion rod and movably connected.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The motor drives the lower pressure roller to rotate on the inner wall of the rectangular through groove, so that the upper and lower pressure rollers roll the aluminum silicate felt synchronously. The thickness of the aluminum silicate felt after rolling is 6mm, which increases its density and improves the tolerance of the aluminum silicate felt in the high-temperature casting environment, avoiding the scouring and erosion of the aluminum silicate felt by the molten steel.

[0017] 2. Along with the rotation of the lower pressure roller, the first pulley drives the transmission belt to make the second pulley rotate synchronously. Under the action of the pulley, the eccentric block drives the n-shaped frame to move up and down on the cylindrical shell, so that the cutting blade cuts the aluminum silicate felt after rolling at equal distances, ensuring that the aluminum silicate felt is accurately cut according to the mold size, ensuring the matching of materials during the mold assembly process, and reducing the error caused by manual cutting.

[0018] 3. During cutting, the cutting blade moves downward under the action of the n-shaped frame, and the sleeve rod drives the pressing plate to move downward synchronously. When the pressing plate contacts the aluminum silicate felt, the spring is compressed, so that the pressing plate can firmly press the aluminum silicate felt. During cutting, the cutting blade moves downward under the action of the n-shaped frame, and the sleeve rod drives the pressing plate to move downward synchronously. When the pressing plate contacts the aluminum silicate felt, the spring is compressed, so that the pressing plate can firmly press the aluminum silicate felt, ensuring the stability during the cutting process, avoiding the displacement or deformation of the aluminum silicate felt during the cutting process, and ensuring the flat surface of the aluminum silicate felt after cutting.

[0019] The above structure is used in conjunction with each other to solve the problem that in the actual use of the existing device, since the common aluminum silicate felt has a density of 110-146kg / m³, a thickness of 20-30mm, and a relatively loose interior, when used in the production of nitrogen-containing cobalt, chromium, and molybdenum materials, the aluminum silicate felt is easily corroded by molten steel, resulting in molten steel running out, causing product scrapping and greatly increasing production costs, and therefore it is difficult to suppress the thickness of the aluminum silicate felt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic flow chart of a method for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars according to the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the part where the second pulley of the present invention is located; Figure 4 For the present invention Figure 2 Schematic diagram of the structure at A in the middle; Figure 5 It is a schematic cross-sectional view of the three-dimensional structure of the sleeve rod of the present invention; Figure 6 It is a cross-sectional schematic diagram of the three-dimensional structure of the n-shaped frame of the present invention; Figure 7This is a schematic diagram of the three-dimensional structure of the lower pressure roller of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the part where the first pulley of the present invention is located.

[0021] In the figure: 1, workbench; 101, rectangular through groove; 102, cutting groove; 2, bracket; 3, winding roller; 4, aluminum silicate felt; 5, lower pressure roller; 6, upper pressure roller; 7, transmission gear; 8, U-shaped frame; 9, cylindrical shell; 10, n-shaped frame; 11, first pulley; 12, second pulley; 13, transmission belt; 14, eccentric block; 15, rectangular frame; 16, cutting blade; 24, sleeve rod; 25, insertion rod; 26, pressure plate; 27, spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment 1: See also Figures 1 to 8 The present invention provides a technical solution: a method and device for solving the problem of steel leakage in casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars, comprising the following steps: S1. Pressing operation: The lower pressing roller 5 is driven by a motor to rotate on a fixed axis on the inner wall of the rectangular through groove 101, so that the upper pressing roller 6 and the lower pressing roller 5 rotate relative to each other to press and convey the aluminum silicate felt 4, so that the thickness of the aluminum silicate felt 4 after rolling is 6 mm, thereby improving the physical strength of the aluminum silicate felt 4; S2, cutting operation: the first pulley 11 is driven to rotate by the lower pressure roller 5, so that the transmission belt 13 can drive the second pulley 12 to rotate on a fixed axis, and the eccentric block 14 is eccentrically placed on the second pulley 12, so that the cutting blade 16 can cut the aluminum silicate felt 4 rolled on the surface of the workbench 1 according to the required mold size under the action of the n-shaped frame 10 to ensure the accuracy of the mold size; S3. Fixing operation: During cutting, the cutting blade 16 moves downward under the action of the n-shaped frame 10, and the sleeve rod 24 drives the pressing plate 26 to move downward synchronously. When the pressing plate 26 contacts the aluminum silicate felt 4, the spring 27 is compressed, so that the pressing plate 26 can be firmly pressed on the aluminum silicate felt 4, ensuring stability during the cutting process, avoiding displacement or deformation of the aluminum silicate felt 4 during the cutting process, and ensuring that the surface of the aluminum silicate felt 4 after cutting is flat.

[0024] Embodiment 2: On the basis of the first embodiment, further: The bottom of the workbench 1 is symmetrically connected to brackets 2 that support the workbench 1 and place it on the ground. A winding roller 3 is penetrated and rotatably connected on the opposite surface of one end of the workbench 1. Aluminum silicate felt 4 is rolled and stored on the outer contour of the winding roller 3. A rectangular through groove 101 is opened on the end of the workbench 1 close to the winding roller 3. The inner wall of the rectangular through groove 101 is penetrated and rotatably connected to a lower pressing roller 5 driven by a power mechanism. Upper pressing rollers 6 for rolling the aluminum silicate felt 4 are penetrated and rotatably connected on both sides of the workbench 1 at positions corresponding to the lower pressing roller 5. Transmission gears 7 for meshing transmission are coaxially fixedly connected to the lower pressing roller 5 and the upper pressing roller 6 on the same side. A cutting mechanism for cutting the pressed aluminum silicate felt 4 is provided on the workbench 1.

[0025] When in use, by setting up a workbench 1 and a bracket 2 arranged on the workbench 1, the bracket 2 can support the workbench 1 and place it on the ground, thereby improving stability. Through the winding roller 3 arranged on the bracket 2 and the aluminum silicate felt 4 arranged on the winding roller 3, the aluminum silicate felt 4 is first rolled up and stored on the winding roller 3, and the winding roller 3 is connected to rotate on the workbench 1, so that the subsequent winding roller 3 can rotate and release the aluminum silicate felt 4. Through the rectangular through groove 101 opened on the workbench 1 and the lower pressure roller 5 arranged on the rectangular through groove 101, the lower pressure roller 5 is driven by the motor to rotate, so that the motor can drive the lower pressure roller 5 to rotate on the inner wall of the rectangular through groove 101 with a fixed axis, and the workbench 1 is connected to the workbench 1. An upper pressing roller 6 is provided, and a lower pressing roller 5 and a transmission gear 7 provided on the upper pressing roller 6, rotate along with the lower pressing roller 5 on a fixed axis, so that the upper pressing roller 6 can rotate relatively with the lower pressing roller 5 synchronously under the action of the transmission gear 7, and the spacing between the upper pressing roller 6 and the lower pressing roller 5 is 6 mm, and the end of the aluminum silicate felt 4 away from the winding roller 3 is passed through between the upper pressing roller 6 and the lower pressing roller 5, so that the upper pressing roller 6 and the lower pressing roller 5 can rotate relative to each other to roll and transport the aluminum silicate felt 4, and can press the aluminum silicate felt 4 to a thickness of 6 mm, thereby increasing the density of the aluminum silicate felt 4, avoiding the erosion of the water inlet hole of the aluminum silicate felt 4 by the nitrogen-containing cobalt-chromium-molybdenum steel liquid during the casting process after mold assembly, thus preventing steel leakage and improving the yield rate.

[0026] Embodiment three: On the basis of the second embodiment, further: The cutting mechanism includes a U-shaped frame 8 fixedly connected to the symmetrical positions on both sides of the workbench 1 away from the winding roller 3, and a cylindrical shell 9 is penetrated and fixedly connected to the two U-shaped frames 8, and an n-shaped frame 10 for lifting and reciprocating movement is penetrated and fixedly connected to the cylindrical shell 9 on both sides.

[0027] A cutting blade 16 for cutting the aluminum silicate felt 4 is fixedly connected to the n-shaped frame 10, and a cutting groove 102 for the cutting blade 16 to cut the aluminum silicate felt 4 is opened at a position corresponding to the cutting blade 16 on the workbench 1, and an auxiliary mechanism for driving the cutting blade 16 to equidistantly cut the aluminum silicate felt 4 on the surface of the workbench 1 is provided on the bracket 2.

[0028] When in use, through the U-shaped frame 8 set on the workbench 1 and the cylindrical shell 9 set on the U-shaped frame 8, the U-shaped frame 8 can fix the cylindrical shell 9 at symmetrical positions on both sides of the workbench 1, and the n-shaped frame 10 set on the cylindrical shell 9, the n-shaped frame 10 is connected to the cylindrical shell 9 for lifting and moving, through the cutting blade 16 set on the n-shaped frame 10, and the cutting groove 102 opened on the workbench 1, accompanied by the corresponding position of the cutting blade 16 and the cutting groove 102, through the auxiliary mechanism set on the bracket 2, the auxiliary mechanism can pull the cutting blade 16 to lift and move to perform equidistant cutting on the aluminum silicate felt 4 on the surface of the workbench 1.

[0029] Embodiment 4: On the basis of the third embodiment, further: The auxiliary mechanism includes a side of one of the brackets 2 close to the n-shaped frame 10, which is penetrated and connected to a second pulley 12 for fixed-axis rotation, and the end of the lower pressure roller 5 close to the second pulley 12 is coaxially fixedly connected to the first pulley 11, and the outer contours of the first pulley 11 and the second pulley 12 are provided with a transmission belt 13 that drives the second pulley 12 to rotate on the fixed axis.

[0030] The second pulley 12 is fixedly connected with an eccentric block 14 which pulls the n-shaped frame 10 to move up and down, and a rectangular frame 15 is sleeved on the outer contour of the eccentric block 14 , and the rectangular frame 15 is fixedly connected to the n-shaped frame 10 .

[0031] When using, Figure 2 , Figure 3As shown, through the second pulley 12 arranged on the workbench 1, the second pulley 12 is connected to the bracket 2 for fixed-axis rotation, and the first pulley 11 is arranged on the lower pressure roller 5, and the first pulley 11 is coaxially fixedly connected with the lower pressure roller 5, and the lower pressure roller 5 rotates along the fixed axis, so that the lower pressure roller 5 can drive the first pulley 11 to rotate synchronously with the fixed axis, and the transmission belt 13 is arranged on the first pulley 11 and the second pulley 12, so that the transmission belt 13 can drive the second pulley 12 to rotate synchronously on the bracket 2 under the rotation of the first pulley 11, and through the second pulley The eccentric block 14 is arranged on 12, and the rectangular frame 15 is arranged on the eccentric block 14, so that the rectangular frame 15 is sleeved on the outer contour of the eccentric block 14 and is movably connected, and the eccentric block 14 is fixedly supported at the bottom end of the n-shaped frame 10, and along with the fixed-axis rotation of the second pulley 12, the rectangular frame 15 can drive the n-shaped frame 10 to move up and down and reciprocate on the cylindrical shell 9 under the action of the eccentric block 14, and then the cutting blade 16 can cut the aluminum silicate felt 4 after rolling on the surface of the workbench 1 according to the required mold size at equal intervals under the action of the n-shaped frame 10, thereby reducing the mold assembly time and improving the casting efficiency.

[0032] Embodiment five: On the basis of the fourth embodiment, further: The n-shaped frame 10 is provided with an auxiliary mechanism for fixing the aluminum silicate felt 4, and the auxiliary mechanism includes a sleeve rod 24 fixedly connected to the outer contour of the n-shaped frame 10 near the symmetrical position on both sides, and the inner walls of the sleeve rod 24 on both sides are movably connected with an insertion rod 25 for lifting and reciprocating movement, and the bottom ends of the two insertion rods 25 are fixedly connected with a pressing plate 26 for fixing the aluminum silicate felt 4 on the workbench 1.

[0033] The springs 27 for guiding the pressing plate 26 to return and move are fixedly connected to the opposite surfaces of the two sleeve rods 24 and the pressing plate 26, and the water storage tank 17 is sleeved on the outer contour of the insertion rod 25 and movably connected.

[0034] When in use, the sleeve rod 24 provided on the n-shaped frame 10 is used to fix and support the sleeve rod 24 on the n-shaped frame 10, and the insertion rod 25 provided on the sleeve rod 24 enables the insertion rod 25 to be axially moved and connected to the inner wall of the sleeve rod 24, and the pressing plate 26 provided on the sleeve rod 24 is fixedly supported on the insertion rod 25, and the spring 27 provided on the sleeve rod 24 enables the spring 27 to support the position of the pressing plate 26, when the n-shaped frame 10 drives the cutting blade 16 to move in the downward vertical direction for cutting, and the sleeve rod 24 can drive the pressing plate 26 to move in the downward vertical direction synchronously. , and when the pressing plate 26 comes into contact with the aluminum silicate felt 4 on the surface of the workbench 1, the sleeve rod 24 moves in the vertical direction close to the pressing plate 26. The spring 27 is squeezed and contracted under the action of the sleeve rod 24, so that the pressing plate 26 can fix the aluminum silicate felt 4 on both sides of the cutting groove 102. At the same time, the cutting blade 16 passes through the inner wall of the pressing plate 26 to cut the aluminum silicate felt 4 above the cutting groove 102, thereby avoiding the problem of displacement or uneven cut of the aluminum silicate felt 4 during the cutting process, and improving the cutting effect of the cutting blade 16 on the aluminum silicate felt 4.

[0035] It is further achieved that the existing device can suppress the thickness of the aluminum silicate felt during actual use, is easy to use, and is better than traditional products.

[0036] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for solving the problem of steel leakage in casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars, comprising the following steps: S1, pressing operation: the lower pressing roller (5) is driven by a motor to rotate on a fixed axis on the inner wall of the rectangular through groove (101), so that the upper pressing roller (6) and the lower pressing roller (5) rotate relative to each other to press and transport the aluminum silicate felt (4), so that the thickness of the aluminum silicate felt (4) after rolling is 6 mm, thereby improving the physical strength of the aluminum silicate felt (4); S2, cutting operation: the first pulley (11) is driven to rotate by the lower pressure roller (5), so that the transmission belt (13) can drive the second pulley (12) to rotate on a fixed axis, and the eccentric block (14) is eccentrically placed on the second pulley (12), so that the cutting blade (16) can cut the aluminum silicate felt (4) rolled on the surface of the workbench (1) at equal distances according to the required mold size under the action of the n-shaped frame (10), thereby ensuring the accuracy of the mold size; S3, fixing operation: during cutting, the cutting blade (16) moves downward under the action of the n-shaped frame (10), and at the same time, the sleeve rod (24) drives the pressing plate (26) to move downward synchronously. When the pressing plate (26) contacts the aluminum silicate felt (4), the spring (27) is compressed, so that the pressing plate (26) can be firmly pressed on the aluminum silicate felt (4), thereby ensuring stability during the cutting process, avoiding displacement or deformation of the aluminum silicate felt (4) during the cutting process, and ensuring that the surface of the aluminum silicate felt (4) after cutting is flat.

2. A device for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars, applied to the method for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars as described in claim 1, characterized in that: A bracket (2) for supporting the workbench (1) and placing it on the ground is fixedly connected to the symmetrical positions on both sides of the bottom of the workbench (1); a winding roller (3) is penetrated and connected to the opposite surface of one end of the workbench (1) for fixed axis rotation; an aluminum silicate felt (4) is rolled and stored on the outer contour of the winding roller (3); a rectangular through groove (101) is opened on the end of the workbench (1) close to the winding roller (3); a lower pressing roller (5) driven to rotate by a power mechanism is penetrated and connected to the inner wall of the rectangular through groove (101); upper pressing rollers (6) for rolling the aluminum silicate felt (4) are penetrated and connected to the upper pressing roller (6) for rolling the aluminum silicate felt (4) at positions corresponding to the lower pressing roller (5) on both sides of the workbench (1); transmission gears (7) for meshing transmission are coaxially fixedly connected to the lower pressing roller (5) and the upper pressing roller (6) on the same side; and a cutting mechanism for cutting the pressed aluminum silicate felt (4) is provided on the workbench (1).

3. The device for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars according to claim 2, characterized in that: The cutting mechanism comprises a U-shaped frame (8) fixedly connected to two symmetrical positions on both sides of the workbench (1) away from one end of the winding roller (3), a columnar shell (9) penetrating and fixedly connected to the two U-shaped frames (8), and an N-shaped frame (10) for lifting and reciprocating movement penetrating and fixedly connected to the columnar shells (9) on both sides.

4. The device for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars according to claim 3 is characterized in that: A cutting blade (16) for cutting the aluminum silicate felt (4) is fixedly connected to the n-shaped frame (10), and a cutting groove (102) for the cutting blade (16) to cut the aluminum silicate felt (4) is provided at a position corresponding to the cutting blade (16) on the workbench (1), and an auxiliary mechanism for driving the cutting blade (16) to cut the aluminum silicate felt (4) on the surface of the workbench (1) at equal intervals is provided on the bracket (2).

5. The device for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars according to claim 4, characterized in that: The auxiliary mechanism comprises a side of one of the brackets (2) close to the n-shaped frame (10) being penetrated and connected to a second belt pulley (12) for fixed axis rotation, and an end of the lower pressure roller (5) close to the second belt pulley (12) being coaxially fixedly connected to a first belt pulley (11), and a transmission belt (13) for driving the second belt pulley (12) for fixed axis rotation is sleeved on the outer contours of the first belt pulley (11) and the second belt pulley (12).

6. The device for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars according to claim 5, characterized in that: The second pulley (12) is fixedly connected to an eccentric block (14) at a position offset from the center, and the eccentric block (14) is used to pull the n-shaped frame (10) to move up and down. A rectangular frame (15) is sleeved on the outer contour of the eccentric block (14), and the rectangular frame (15) is fixedly connected to the n-shaped frame (10).

7. The device for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars according to claim 6, characterized in that: The n-shaped frame (10) is provided with an auxiliary mechanism for fixing the aluminum silicate felt (4), the auxiliary mechanism comprising a sleeve rod (24) fixedly connected to the outer contour of the n-shaped frame (10) near the symmetrical positions on both sides, the inner walls of the sleeve rods (24) on both sides are movably connected to insertion rods (25) for lifting and reciprocating movement, and the bottom ends of the two insertion rods (25) are fixedly connected to a pressing plate (26) for fixing the aluminum silicate felt (4) on the workbench (1).

8. The device for solving the problem of steel leakage during casting of nitrogen-containing cobalt-chromium-molybdenum master alloy bars according to claim 7, characterized in that: The two sleeve rods (24) and the opposing surfaces of the pressure plate (26) are fixedly connected with springs (27) for guiding the pressure plate (26) to perform reset movement, and the water storage tank (17) is sleeved on the outer contour of the insertion rod (25) and movably connected.

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