A single-rolling process for silicon steel

Abstract

This invention belongs to the field of cold-rolled sheet technology, specifically a one-step thinning process for silicon steel. Addressing the problem in existing technologies where high-pressure rolling is used to eliminate transverse bends, leading to increased roll load and potential roll breakage, the following solution is proposed, comprising the following production steps: Hot-rolled silicon steel coils are hoisted to the starting section of the production line for uncoiling; after uncoiling, the head of the steel strip first enters the pickling tank, then the grinding roll unit; after exiting the grinding roll unit, it continues to the multi-roll cold rolling mill for rolling. Before rolling, transverse bends are detected on the roller table; if a transverse bend is found, a moving roll is raised and controlled at a position before the cold rolling mill. This invention allows for rapid heating of the strip body when a transverse bend is detected, followed by adjusting the position of the directional pressure roll to increase the reduction rate, ensuring equal elongation on both sides of the steel strip, thereby eliminating the transverse bend defect.

Description

Technical Field

[0001] This invention relates to the field of cold-rolled sheet technology, and more particularly to a one-step thinning process for silicon steel. Background Technology

[0002] Silicon steel possesses characteristics such as high magnetic permeability, low coercivity, and high resistivity, and is mainly used in important fields such as power electronics, military, and industrial production. As an important soft magnetic alloy, silicon steel is characterized by high brittleness and low ductility. Due to defects in the rolling process and emulsion, rolled products are prone to various types of surface defects, which may reduce the product's service life and performance.

[0003] The transverse bending of thick cold-rolled sheets is inherited from hot-rolled raw materials. After pickling, a latent transverse bending is formed. This bending is recovered and strengthened during the bell-type annealing process, and is fully manifested when the coil is uncoiled at the leveling mill inlet. During the cooling process of hot-rolled high-temperature steel coils, the outer layer, which cools faster, shrinks more than the inner core. Due to the plate's convexity, the middle of the strip has a certain thickness increase relative to the edges. The interlayer pressure in the middle is greater than at the edges. Under the action of the radial component of the coiling tension, the edges of the steel sheet bend inwards. This bending is retained after cooling, thus forming hot-rolled transverse bending. Severe transverse bending of thick hot-rolled coils can usually be seen on the uncoiler of the pickling line. After pickling, due to the large degree of cold rolling deformation and the high strength of the cold-hardened coil after work hardening, the stress difference in the thickness direction is insufficient to deform the strip. Therefore, it is necessary to minimize transverse bending during the rolling process to avoid amplifying the signal of secondary transverse bending during subsequent annealing. Summary of the Invention

[0004] The present invention proposes a one-step thin rolling process for silicon steel, comprising the following production steps:

[0005] Step 1: Hoist the hot-rolled silicon steel coil to the starting section of the production line for uncoiling; after uncoiling, the head of the steel strip first enters the pickling tank, and then enters the grinding roll unit.

[0006] Step 2: After exiting the grinding roll unit, the strip continues to the multi-roll cold rolling mill for rolling. Before rolling, it is necessary to check for transverse bending on the roller table. If transverse bending is present, the moving roll is raised in front of the cold rolling mill to lift the strip body between the two heating hoods to the top position and heat it quickly. Then, emulsion is sprayed on the side with less extension in the transverse bending direction to increase the rolling reduction rate.

[0007] Step 3: The material is rolled in a cold rolling mill, and then rolled according to a specification of 32.6% / 29.03% / 22.72% / 25.29% for the deformation rate.

[0008] Step 4: Then perform annealing and pickling, and finally coil the steel strip and store it in the warehouse.

[0009] Preferably, the cold rolling mill in the second step includes two fixed platforms for fixing the cold rolling mill. Symmetrically fixed to the tops of the two fixed platforms are frames, and between the two frames is arranged a roll group. Fixed between the tops of the two frames is a directional rolling reduction mechanism, and the directional rolling reduction mechanism includes a directional pressure roll slidably connected between the tops of the two frames. When the strip body has a transverse bend, move the directional pressure roll to the bent side and increase the rolling reduction rate of the roll at that end to gradually eliminate the transverse bend. On the upper surface of the two fixed platforms, in front of the cold rolling mill, is arranged a heating device, and between the heating device and the cold rolling mill on the upper surface of the fixed platform is arranged an emulsion directional spraying mechanism. By arranging the heating device in front of the cold rolling mill, during use, when a transverse bend is detected, the strip body can be quickly heated up, and then, in cooperation with the position movement of the directional pressure roll, the rolling reduction rate can be increased to make the elongation amounts on both sides of the steel strip the same, thereby eliminating the transverse bend defect.

[0010] Preferably, the roll group includes a supporting roll group arranged at a position below the rolling line and a movable rolling reduction group roll located above the fixed platform. In the middle of the frame on the upper surface of the fixed platform are fixed two parallel channel steel columns with opposite openings. Between the two channel steel columns is slidably connected the same sliding combined bearing seat in an inverted "pin" structure. Between the two sliding combined bearing seats are rotatably connected two supporting pressure rolls and one working roll. Between the top of the sliding combined bearing seat and the top inner wall of the frame are fixed end top rods. Through the arrangement of the end top rods, pressure can be applied to both ends of the working roll, and the pressure is evenly distributed on the roll heads of the two supporting pressure rolls and the roll head of the working roll, avoiding breakage of the roll due to excessive load on a single roll caused by concentrated rolling reduction.

[0011] Preferably, the directional rolling reduction mechanism further includes an arched beam frame fixed between the tops of the two frames. Fixed to the lower surface of the beam frame are two parallel guide plates, and between the two guide plates is slidably connected the same carrier plate. Fixed to the lower surface of the carrier plate at both ends of the directional pressure roll are support top frames, and the directional pressure roll is rotatably connected between the two support top frames. Fixed to the top of the carrier plate is a hydraulic top rod, and in the middle of the carrier plate is opened a U-shaped hole penetrating left and right, and through the U-shaped hole passes a transmission screw rod. In the middle of the transmission screw rod is screwed an internal thread slider, and the internal thread slider is located in the middle of the U-shaped hole. In the middle of the bottom of the U-shaped hole is fixed an electromagnet. When it is necessary to control the carrier plate to drive the directional pressure roll to move, just energize the electromagnet to form relative fixation between the internal thread slider and the carrier plate, and then control the rotation of the transmission screw rod to move the directional pressure roll to move it to the end that needs auxiliary rolling reduction.

[0012] Preferably, a servo motor is fixed to the inner wall of the crossbeam frame, and the top end of the output shaft of the servo motor is fixed to the end of the transmission screw through a coupling. The position movement of the directional pressure roller can be realized by controlling the servo motor, which is convenient for control and positioning.

[0013] Preferably, the heating device includes vertical slide rail supports fixed on two fixed platforms with opposite and parallel openings. A crossbeam is fixed between the top ends of the two vertical slide rail supports. Two L-shaped rotating shafts in opposite directions are fixed in the middle of the crossbeam, and each L-shaped rotating shaft is rotatably connected to a rocker arm at its top. A connecting rod is rotatably connected to the long end of the rocker arm, and a heating cover is fixed to the bottom end of the connecting rod. The two heating covers are symmetrically distributed. Sliding bearing seats are slidably connected in the sliding grooves of the two vertical slide rail supports, and a rotating pipe is rotatably connected between the two sliding bearing seats. Pull ropes are fixed to the ends of the two rocker arms away from the connecting rods. With the pull ropes, when it is necessary to heat the strip body, simply pull down the two pull ropes simultaneously to widen the gap between the two heating covers, and then control the rotating pipe below the strip body to move it up to move the strip body between the two heating covers for alignment and heating.

[0014] Preferably, a winding reduction motor is fixed at the top center of the crossbeam plate, and a rope winding wheel is fixed at the top of the output shaft of the winding reduction motor, with two pull ropes wound in the same direction around the outer wall of the rope winding wheel; the two heating covers can be raised and lowered by controlling the rotation of the winding reduction motor.

[0015] Preferably, both heating covers are provided with a steering roller at their bottom ends, and heating rods are fixed at equal intervals on the middle of the opposite side of both heating covers. Magnetic sealing strips are provided at the two edges on the opposite side of both heating covers, and arc-shaped slots that match the outer diameter of the rotating tube are opened near the top of the opposite side of both heating covers. By setting the magnetic sealing strips, the two heating covers can be more sealed during the heating process, reducing heat loss.

[0016] Preferably, the emulsion directional spraying mechanism includes a spray pipe fixing frame fixed on two fixed platforms, with the same spray pipe fixed between the two spray pipe fixing frames. The outer circumference of the spray pipe has a strip-shaped hole near the bottom end, and a strip-shaped nozzle is fixed at the bottom end of the strip-shaped hole on the outer wall of the spray pipe. Two baffle rings and a piston baffle are slidably connected inside the spray pipe, and a stop rod is fixed between the baffle rings and the piston baffle. A movable spray pipe is inserted in the middle of the baffle rings, and the end of the movable spray pipe away from the spray pipe is connected to an emulsion tank through a hose. With the movable baffle rings and piston baffle, the emulsion can be added to the location where the pressure reduction needs to be increased before pressure rolling.

[0017] Preferably, two parallel roller frames are fixed on a fixed platform near the emulsion tank, and two guide rollers are rotatably connected between the vertical rods of the two roller frames. The outer circumference of the two guide rollers is provided with anti-slip protrusions, and a servo motor is fixed to the end of the shaft of one of the anti-slip protrusions. The position of the emulsion spray can be changed by a moving spray pipe driven by the servo motor.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. By using a heating device installed in front of the cold rolling mill, when a transverse bend is detected during use, the strip body can be rapidly heated. Then, by moving the position of the directional pressure roller, the reduction rate can be increased so that the extension on both sides of the strip is the same, thereby eliminating the transverse bend defect.

[0020] 2. By setting the end push rod, pressure can be applied to both ends of the work roll, and the pressure is evenly distributed on the roller heads of the two supporting pressure rollers and the roller head of the work roll, so as to avoid the roller breaking due to excessive load caused by the pressure being concentrated on one roller.

[0021] 3. With the pull ropes installed, when it is necessary to heat the strip body, simply pull down two pull ropes at the same time to widen the gap between the two heating hoods, and then control the rotating tube below the strip body to move the strip body between the two heating hoods, and then align it for heating.

[0022] 4. By using movable baffle rings and piston baffles, the emulsion can be added to the locations where increased pressure is required before pressure rolling. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a single rolling mill in a silicon steel one-pass thin rolling process proposed in this invention;

[0024] Figure 2 This is a schematic diagram of the rear structure of a single rolling mill in a silicon steel one-time thin rolling process proposed in this invention;

[0025] Figure 3 This is a top view of a single rolling mill in a silicon steel one-pass thin rolling process proposed in this invention;

[0026] Figure 4 This invention proposes a one-step thin rolling process for silicon steel. Figure 3 Sectional view along line AA;

[0027] Figure 5 This is a schematic diagram of the heating shroud in a single-rolling process of silicon steel proposed in this invention;

[0028] Figure 6 This is an assembly diagram of an emulsion directional spraying mechanism in a silicon steel one-time thin rolling process proposed in this invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the driving mechanism in a single-rolling process of silicon steel proposed in this invention.

[0030] In the diagram: 1. Fixed platform; 2. Sliding combined bearing seat; 3. End top rod; 4. Vertical slide rail bracket; 5. Sliding bearing seat; 6. Crossbeam plate; 7. Winding geared motor; 8. Winding sheave; 9. L-shaped rotating shaft frame; 10. Tilter; 11. Connecting cantilever rod; 12. Heating cover; 121. Arc-shaped slot; 122. Heating rod; 123. Magnetic seal; 13. Directional pressing mechanism; 14. Guide plate; 15. Frame; 16. Supporting pressure roller; 17. 18. Strip steel body; 19. Orientation pressure roller; 20. Servo motor one; 21. Spray pipe fixing frame; 22. Moving spray pipe; 23. Emulsion tank; 24. Spray pipe; 25. U-shaped hole; 26. Hydraulic push rod; 27. Carrier plate; 28. Support top frame; 29. ​​Working roller; 30. Steering roller; 31. Strip nozzle; 32. Baffle ring; 33. Piston baffle; 34. Servo motor two; 35. Roller frame; 36. Tube guide roller; 37. Anti-slip convexity. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Reference Figure 1-7 A one-time thin rolling process for silicon steel includes the following production steps:

[0033] Step 1: Hoist the hot-rolled silicon steel coil to the starting section of the production line for uncoiling; after uncoiling, the head of the steel strip first enters the pickling tank, and then enters the grinding roll unit.

[0034] Step 2: After exiting the grinding roll unit, the strip continues to enter the multi-roll cold rolling mill for rolling. Before rolling, it is necessary to check for transverse bending on the roller table. If transverse bending is present, the moving roll is raised in front of the cold rolling mill to lift the strip body 17 between the two heating hoods 12 to the top position and heat it quickly. Then, emulsion is sprayed on the side with less extension in the transverse bending direction to increase the rolling reduction rate.

[0035] Step 3: The material is rolled in a cold rolling mill, and then rolled according to a specification of 32.6% / 29.03% / 22.72% / 25.29% for the deformation rate.

[0036] Step 4: Then carry out annealing and pickling, and finally coil the steel strip and store it in the warehouse.

[0037] A primary cold rolling process for silicon steel. The cold rolling mill in Step 2 includes two fixed platforms 1 for fixing the cold rolling mill. At the top of the two fixed platforms 1, symmetrically arranged frames 15 are respectively fixed. A roll group is arranged between the two frames 15. A directional rolling reduction mechanism 13 is fixed between the tops of the two frames 15. The directional rolling reduction mechanism 13 includes a directional pressure roll 18 slidably connected between the tops of the two frames 15. When the strip body 17 has a transverse bend, move the directional pressure roll 18 to the bent side and increase the rolling reduction rate of the roll at that end, then the transverse bend can be gradually eliminated. On the upper surface of the two fixed platforms 1, a heating device is arranged in front of the cold rolling mill, and an emulsion directional spraying mechanism is arranged between the heating device and the cold rolling mill on the upper surface of the fixed platform 1. By arranging the heating device in front of the cold rolling mill, during use, when it is detected that a transverse bend appears, the strip body 17 can be quickly heated and its temperature can be raised. Then, in combination with the position movement of the directional pressure roll 18, the rolling reduction rate can be increased to make the elongation amounts on both sides of the steel strip the same, thereby eliminating the transverse bend defect.

[0038] Refer to Figure 3 , the roll group includes a supporting roll group arranged below the rolling line and a movable rolling reduction group roll located above the fixed platform 1. In the middle of the frame 15 on the upper surface of the fixed platform 1, channel steel columns with opposite openings and parallel to each other are fixed. A same sliding combined bearing seat 2 in an inverted "pin" structure is slidably connected between the two channel steel columns. Two supporting pressure rolls 16 and a working roll 28 are rotatably connected between the two sliding combined bearing seats 2. End top rods 3 are respectively fixed between the top of the sliding combined bearing seat 2 and the top inner wall of the frame 15. Through the arrangement of the end top rods 3, pressure can be applied to both ends of the working roll 28, and the pressure is evenly distributed on the roll heads of the two supporting pressure rolls 16 and the roll head of the working roll 28, avoiding breakage of the roll due to excessive load on a single roll caused by concentrated rolling reduction.

[0039] Refer to Figure 4The directional pressing mechanism 13 also includes an arched crossbeam fixed between the tops of the two frames 15. Two parallel guide plates 14 are fixed to the lower surface of the crossbeam, and a common carrier plate 26 is slidably connected between the two guide plates 14. Supporting top frames 27 are fixed to both ends of the lower surface of the carrier plate 26 at the directional pressing roller 18, and the directional pressing roller 18 is rotatably connected between the two supporting top frames 27. A hydraulic push rod 25 is fixed to the top of the carrier plate 26, and a through-hole is opened in the middle of the carrier plate 26. A U-shaped hole 24 is provided, through which a transmission screw passes. An internally threaded slider is screwed into the middle of the transmission screw. The internally threaded slider is located in the middle of the U-shaped hole 24, and an electromagnet is fixed in the middle of the bottom of the U-shaped hole 24. When it is necessary to control the carrier plate 26 to drive the directional pressure roller 18 to move, it is only necessary to energize the electromagnet to fix the internally threaded slider and the carrier plate 26 to a relative position. Then, by controlling the rotation of the transmission screw, the directional pressure roller 18 can be moved to the end that needs to be pressed down.

[0040] Reference Figure 2 A servo motor 19 is fixed to the inner wall of the crossbeam frame, and the top of the output shaft of the servo motor 19 is fixed to the end of the transmission screw through a coupling. The position movement of the directional pressure roller 18 can be realized by controlling the servo motor 19, which is convenient for control and positioning.

[0041] Reference Figure 2-5 The heating device includes vertical slide rail supports 4 fixed on two fixed platforms 1 with opposite and parallel openings. A horizontal beam 6 is fixed between the top ends of the two vertical slide rail supports 4. Two L-shaped rotating shafts 9 in opposite directions are fixed in the middle of the horizontal beam 6. Each L-shaped rotating shaft 9 has a rocker arm 10 rotatably connected to its top end. A connecting rod 11 is rotatably connected to the long end of the rocker arm 10, and a heating cover 12 is fixed to the bottom end of the connecting rod 11. The two heating covers 12 are symmetrically distributed. The grooves of the two vertical slide rail supports 4... Both are slidably connected to sliding bearing seats 5, and the two sliding bearing seats 5 are rotatably connected to the same rotating tube. The ends of the two rocker arms 10 away from the connecting rod 11 are fixed with pull ropes. With the pull ropes, when it is necessary to heat the strip body 17, you only need to pull down the two pull ropes at the same time to open up the gap between the two heating covers 12, and then control the rotating tube below the strip body 17 to move it up to move the strip body 17 between the two heating covers 12, and then align it for heating.

[0042] Reference Figure 4 A winding reduction motor 7 is fixed at the top center of the crossbeam plate 6, and a rope wheel 8 is fixed at the top of the output shaft of the winding reduction motor 7. Two pull ropes are wound in the same direction on the outer wall of the rope wheel 8. The two heating covers 12 can be raised and lowered by controlling the rotation of the winding reduction motor 7.

[0043] Reference Figure 5 Both heating covers 12 are equipped with a steering roller 29 at their bottom ends, and both heating covers 12 have equally spaced heating rods 122 fixed in the middle of their opposite sides. Both heating covers 12 have magnetic sealing strips 123 at their two edges on their opposite sides, and both heating covers 12 have arc-shaped slots 121 that match the outer diameter of the rotating tube near their top. The magnetic sealing strips 123 can make the two heating covers 12 more sealed during the heating process, reducing heat loss.

[0044] Reference Figure 6 The emulsion directional spraying mechanism includes spray pipe fixing frames 20 fixed on two fixed platforms 1. A single spray pipe 23 is fixed between the two spray pipe fixing frames 20. A strip-shaped hole is opened on the outer circumference of the spray pipe 23 near the bottom end, and a strip-shaped nozzle 30 is fixed on the outer wall of the spray pipe 23 at the bottom end of the strip-shaped hole. Two baffle rings 31 and piston baffles 32 with parallel plate surfaces are slidably connected inside the spray pipe 23, and a stop rod is fixed between the baffle rings 31 and piston baffles 32. A movable spray pipe 21 is inserted into the middle of the baffle rings 31, and the end of the movable spray pipe 21 away from the spray pipe 23 is connected to the emulsion tank 22 through a hose. With the movable baffle rings 31 and piston baffles 32, the emulsion can be added to the position where the pressure reduction needs to be increased before pressure rolling.

[0045] Reference Figure 3-4 Two parallel roller frames 34 are fixed on a fixed platform 1 near the emulsion tank 22. Two guide rollers 35 are rotatably connected between the vertical rods of the two roller frames 34. The outer circumference of the two guide rollers 35 is provided with anti-slip protrusions 36. A servo motor 33 is fixed to the end of the shaft of one of the anti-slip protrusions 36. The position of the emulsion spray can be changed by the moving nozzle 21 driven by the servo motor 33.

[0046] During operation, the cold rolling mill uses a heating device located in front of the mill. When the transverse bending detection mechanism on the roller table detects a transverse bend in the strip body 17, it transmits a signal to the control room. At this time, the rotating tube below the strip body 17 is controlled to slowly move the strip body 17 upwards to the height position where it is engaged with the two arc-shaped slots 121. Then, the electric heating rod 122 inside the heating cover 12 is turned on to heat the surface of the strip body 17. This rapidly heats the strip body 17, and then, in conjunction with the position movement of the directional pressure roller 18, the reduction rate is increased to make the extension on both sides of the strip equal, thereby eliminating the transverse bending defect. When it is necessary to control the carrier plate 26 to move the directional pressure roller 18, simply energize the electromagnet to fix the internal threaded slider relative to the carrier plate 26, and then control the rotation of the transmission screw to move the directional pressure roller 18 to the end that needs assisted reduction.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A one-step thin rolling process for silicon steel, comprising the following production steps: Step 1: Hoist the hot-rolled silicon steel coil to the starting section of the production line for uncoiling; after uncoiling, the head of the steel strip first enters the pickling tank, and then enters the grinding roll unit. Step 2: After exiting the grinding roll unit, continue to enter the multi-roll cold rolling mill unit for rolling. Before rolling, it is necessary to check whether there is a transverse bending phenomenon on the roller table. If there is a transverse bending phenomenon, control the raising of the moving roll in front of the cold rolling mill unit to lift the strip body (17) up to the two heating hoods (12) until the top position, and then heat it quickly. Then spray emulsion on the side with less extension in the transverse bending direction to increase the rolling reduction rate. Step 3: The material is rolled in a cold rolling mill, and then rolled according to a specification of 32.6% / 29.03% / 22.72% / 25.29% for the deformation rate. Step 4: Then perform annealing and pickling, and finally coil the steel strip into a warehouse; The cold rolling mill in step two includes two fixed platforms (1) for fixing the cold rolling mill. The top of the two fixed platforms (1) is fixed with symmetrical frames (15), and a roll group is arranged between the two frames (15). A directional pressing mechanism (13) is fixed between the top of the two frames (15). The directional pressing mechanism (13) includes a directional pressing roller (18) slidably connected between the top of the two frames (15). When the strip body (17) bends laterally, the directional pressing roller (18) is moved to the side of the bend and the pressing rate of the roller at that end is increased to gradually eliminate the bend. A heating device is arranged on the upper surface of the two fixed platforms (1) in front of the cold rolling mill. An emulsion directional spraying mechanism is arranged on the upper surface of the fixed platforms (1) between the heating device and the cold rolling mill. The heating device includes vertical slide rail brackets (4) with opposite openings and parallel to each other fixed on two fixed platforms (1). The top ends of the two vertical slide rail brackets (4) are fixed with the same crossbeam plate (6). The middle of the crossbeam plate (6) is fixed with two L-shaped rotating shafts (9) in opposite directions. The top ends of the L-shaped rotating shafts (9) are rotatably connected with rocker arms (10). The long end of the rocker arm (10) is rotatably connected with a connecting rod (11). The bottom end of the connecting rod (11) is fixed with a heating cover (12). The two heating covers (12) are symmetrically distributed. The sliding grooves of the two vertical slide rail brackets (4) are slidably connected with sliding bearing seats (5). The two sliding bearing seats (5) are rotatably connected with the same rotating pipe. The ends of the two rocker arms (10) away from the connecting rod (11) are fixed with pull ropes. A winding reduction motor (7) is fixed at the top center of the crossbeam plate (6), and a rope wheel (8) is fixed at the top of the output shaft of the winding reduction motor (7), with two ropes wound in the same direction around the outer wall of the rope wheel (8). The bottom ends of the two heating covers (12) are both provided with turning rollers (29), and equidistantly distributed electric heating rods (122) are fixed in the middle of the opposite sides of the two heating covers (12). Magnetic seals (123) are provided at the two side edges of the opposite sides of the heating covers (12), and arc-shaped card slots (121) adapted to the outer diameter of the rotating pipe are opened near the top ends of the opposite sides of the two heating covers (12).

2. The silicon steel one-time thin rolling process according to claim 1, characterized in that, The roll group includes a supporting roll group arranged below the rolling line and a moving reduction roll group located above the fixed platform (1). On the upper surface of the fixed platform (1), channel steel columns with opposite openings and parallel to each other are fixed in the middle of the frame (15). The same sliding combined bearing seat (2) in an inverted "pin" structure is slidably connected between the two channel steel columns. Two supporting pressure rolls (16) and a working roll (28) are rotatably connected between the two sliding combined bearing seats (2). End top rods (3) are fixed between the top ends of the sliding combined bearing seats (2) and the top inner wall of the frame (15).

3. The silicon steel one-time thin rolling process according to claim 1, characterized in that, The directional reduction mechanism (13) further includes an arch-shaped crossbeam frame fixed between the top ends of the two frames (15). Two parallel guide plates (14) are fixed on the lower surface of the crossbeam frame. The same carrier plate (26) is slidably connected between the two guide plates (14). Support top frames (27) are fixed at both ends of the directional pressure roll (18) on the lower surface of the carrier plate (26). The directional pressure roll (18) is rotatably connected between the two support top frames (27). A hydraulic top rod (25) is fixed at the top end of the carrier plate (26). A U-shaped hole (24) penetrating left and right is opened in the middle of the carrier plate (26). A transmission screw rod passes through the U-shaped hole (24). An internally threaded slider is screwed to the middle of the transmission screw rod. The internally threaded slider is located in the middle of the U-shaped hole (24). An electromagnet is fixed in the middle of the bottom of the U-shaped hole (24).

4. The silicon steel one-time thin rolling process according to claim 3, characterized in that, A servo motor I (19) is fixed on the inner wall of the crossbeam frame, and the top end of the output shaft of the servo motor I (19) is fixed to the end of the transmission screw rod through a coupling.

5. The silicon steel one-time thin rolling process according to claim 1, characterized in that, The emulsion directional spraying mechanism includes spraying pipe fixing frames (20) fixed on the two fixed platforms (1). The same spraying pipe (23) is fixed between the two spraying pipe fixing frames (20). A strip-shaped hole is opened near the bottom end of the circumferential outer wall of the spraying pipe (23). A strip-shaped nozzle (30) is fixed to the outer wall of the spraying pipe (23) at the bottom end of the strip-shaped hole. Two baffle rings (31) and a piston baffle (32) with parallel plate surfaces are slidably connected inside the spraying pipe (23). A resisting rod is fixed between the baffle ring (31) and the piston baffle (32). A moving spray pipe (21) is inserted into the middle of the baffle ring (31). The end of the moving spray pipe (21) far from the spraying pipe (23) is connected to an emulsion tank (22) through a hose.

6. The silicon steel one-time thin rolling process according to claim 5, characterized in that, Two parallel roller frames (34) are fixed on a fixed platform (1) near the emulsion tank (22), and two tube guide rollers (35) are rotatably connected between the vertical rods of the two roller frames (34). Anti-slip protrusions (36) are provided on the outer circumference of the two tube guide rollers (35), and a servo motor (33) is fixed to the end of the shaft of one of the anti-slip protrusions (36).

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