A shearing quality control method for a flying shear device used in a slitting process

Abstract

The invention discloses a shearing quality control method for a flying shear device for a slitting process, wherein an upper shearing component further comprises an upper wing which is detachably fixedly mounted on an upper flying shear seat and located on the front side of an upper blade, and a lower shearing component further comprises a lower wing which is detachably fixedly mounted under a lower flying shear seat and located under the front side of a lower blade, and the shearing quality control method comprises the following steps: when the upper blade and the lower blade are in a shearing state, a distance H1 between the highest point of the lower wing and a shearing center line is adjusted, H1=A / 2+E1; when the upper blade and the lower blade are in a shearing state, a distance H2 between the lowest point of the upper wing and a shearing center line is adjusted, H2=A / 2+E2, wherein A is a material diameter, E1 and E2 are positive integers, and E2>E1; the shearing quality control method for a flying shear device for a slitting process of the invention ensures, on the one hand, that a cut head can fall smoothly and production is stabilized; secondly, by coordinating the positions of the wing, a more straight movement of the material is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of controlled rolling and controlled cooling, and in particular to a shearing quality control method of a flying shear device used in a slitting process. Background Art

[0002] With the continuous maturity of controlled rolling and controlled cooling technology, the three-cutting process of rolling adopts the cutting guide and cutting, then enters the water penetration, and then passes through the flying shear head to enter the next rolling mill. If the head cannot be cut, the temperature of the head will drop seriously, which will cause the "black head" problem, affecting production accidents and causing great damage to the equipment. If a flying shear head is used, due to incorrect control methods, it is easy to cause large head vibrations and the material shape is difficult to control, which in turn leads to subsequent rolling mill failures. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings. The present invention provides a shear quality control method for a flying shear device used in a slitting process, which can ensure that the material moves more straightly.

[0004] The present invention provides a shearing quality control method for a flying shear device used in a slitting process. The flying shear device comprises a front guide groove, a shearing mechanism and a rear guide groove which are sequentially arranged along the advancing direction of the material type. The shearing mechanism comprises an upper shearing assembly, a lower shearing assembly and a shearing drive mechanism for driving the upper shearing assembly and the lower shearing assembly to perform shearing actions. The upper shearing assembly comprises an upper flying shear seat and an upper blade fixed at the lower end of the upper flying shear seat. The lower shearing assembly comprises a lower flying shear seat and a lower blade fixed at the upper end of the lower flying shear seat. The upper shearing assembly also comprises an upper guard wing which is detachably fixedly mounted on the upper flying shear seat and located on the front side of the upper blade. The lower shearing assembly also comprises a lower guard wing which is detachably fixedly mounted under the lower flying shear seat and located on the front side of the lower blade. The shearing quality control method comprises the following steps: when the upper blade and the lower blade are in a shearing state, the distance H between the highest point of the lower guard wing and the shearing center line is adjusted. 1 ,H 1 = A / 2+E 1 ; Adjust the distance H between the lowest point of the upper wing and the shear center line when the upper and lower blades are in the shearing state 2 , H 2 =A / 2+E 2 , where A is the diameter of the material, E 1 and E 2 is a positive integer, and E 2 >E 1 .

[0005] Furthermore, 1mm≤E 1 ≤3mm, 15mm≤E 2 ≤20mm.

[0006] Furthermore, the end of the upper wing also has a plurality of wing guide grooves arranged side by side, the center distance of the wing guide grooves is equal to the center distance of the cutting guide grooves in the cutting process, and the lowest point of the upper wing is the lowest point of the groove bottom of the wing guide groove.

[0007] Furthermore, the upper wing guard is detachably mounted on the upper shear seat through an upper adjusting mechanism, the upper adjusting mechanism includes an upper adjusting plate, an upper fastening threaded hole and an upper fastening bolt, the upper adjusting plate is fixedly connected to the upper wing guard, an upper waist-shaped hole is formed on the upper adjusting plate, the upper fastening threaded hole is formed on the upper shear seat, the threaded end of the upper fastening bolt is inserted into the upper waist-shaped hole and then screwed into the upper fastening threaded hole, and the limiting end of the upper fastening bolt is against the upper adjusting plate; the lower wing guard is detachably mounted on the lower shear seat through a lower adjusting mechanism, the lower adjusting mechanism includes a lower adjusting plate, a lower fastening threaded hole and a lower fastening bolt, the lower adjusting plate is fixedly connected to the lower wing guard, a lower waist-shaped hole is formed on the lower adjusting plate, the lower fastening threaded hole is formed on the lower shear seat, the threaded end of the lower fastening bolt is inserted into the lower waist-shaped hole and then screwed into the lower fastening threaded hole, and the limiting end of the lower fastening bolt is against the lower adjusting plate.

[0008] Furthermore, the shearing quality control method further comprises the following steps: adjusting the height difference Δh between the shearing center line and the rolling center line so that the shearing center line is lower than the rolling center line and the height difference Δh≤A / 2.

[0009] Furthermore, the shearing quality control method further comprises the following steps: selecting a conduit as a front guide groove according to the rolling specifications, and the cavity height H of the front guide groove 3 = A / 2+E 3 , E 3 is a positive integer, 10mm≤E 3 ≤15mm.

[0010] Furthermore, the shear quality control method of the flying shear device for the slitting process further includes the following steps: a first upper arc surface and a first lower arc surface are formed on the outlet end surface of the front guide groove, and the distance between the first upper arc surface and the upper shear circle is L 1 , 25mm≤L 1 ≤30mm, the distance between the first lower arc surface and the lower shear circle is L 2 , 25mm≤L 2 ≤30mm; a second upper arc surface and a second lower arc surface are provided on the inlet end surface of the rear guide groove, and the distance between the second upper arc surface and the upper shear circle is L 3 , 25mm≤L 3 ≤30mm, the distance between the second lower arc surface and the lower shear circle is L 4 , 25mm≤L 4 ≤30mm;

[0011] Furthermore, an opening is provided at the front side of the bottom wall of the rear guide groove, and a slant plate is installed at the opening through a slant plate adjustment mechanism. The shear quality control method further comprises the following steps: adjusting the horizontal distance L between the frontmost side of the slant plate and the center line of the flying shear 5 , 1400mm≤L 5 ≤1600mm.

[0012] Further, the inclined plate has an inclination angle θ relative to the horizontal plane, and 15°≤θ≤25°.

[0013] Furthermore, the shearing quality control method also includes the following steps: adjusting the exit angle α of the shearing mechanism, α>β, and 30°≤α≤90°, β is the shearing angle of the shearing mechanism.

[0014] The beneficial effects of the present invention are as follows: the shear quality control method of the flying shear device for the slitting process of the present invention enables the material to smoothly enter the corresponding guide groove by adjusting the distance between the front and rear guide grooves of the flying shear and the shear circle; the setting of the inner cavity size of the front guide tube ensures that the material enters the shearing range of the flying shear along the center line, and ensures the stability of the material; adjusts the distance and angle of the inclined plate to ensure that the cut head can fall stably; adjusts the distance between the rolling center line and the shearing center line to avoid the cut head from jumping into the guide groove; adjusts the flying shear exit angle and the shearing angle to ensure that the head is sheared straight; adjusts the height of the guard wing to avoid excessive shaking of the material, and ensures that the rolled piece moves in a straight line after the head is cut, which is more stable. On the one hand, the control method of the present invention ensures that the cut head can fall smoothly and stabilize production; secondly, through the guard wing,

[0015] The coordination of the wing position ensures that the material moves more straightly; secondly, by setting the exit angle and the shear angle, the shear head is guaranteed to be straight, making the production more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural principle diagram of a flying shear device in an embodiment of the present invention;

[0017] Figure 2 is a front view of the front guide groove in an embodiment of the present invention;

[0018] Figure 3 yes Figure 1 A partial enlarged view of part A;

[0019] Figure 4 is a front view of the upper shearing mechanism and the lower shearing mechanism in the embodiment of the present invention when they are in a shearing state;

[0020] Figure 5 yes Figure 4 A partial enlarged view of part B;

[0021] Figure 6 yes Figure 1 A partial enlarged view of part C in the middle;

[0022] Figure 7 This is a schematic diagram of the upper (lower) blade just coming into contact with the material;

[0023] Figure 8 This is a schematic diagram of the upper (lower) blade just separating from the material.

[0024] In the figure, 1 is the front guide groove, 2 is the upper flying shear seat, 3 is the upper blade, 4 is the lower flying shear seat, 5 is the lower blade, 6 is the base, 7 is the gasket, 8 is the top plate, 9 is the support frame, 10 is the bolt and nut, 11 is the upper wing, 12 is the upper shear circle, 13 is the upper adjustment plate, 14 is the upper fastening bolt, 15 is the upper waist-shaped hole, 16 is the lower wing, 17 is the lower shear circle, 18 is the lower adjustment plate, 19 is the lower fastening bolt, 20 is the lower waist-shaped hole, 21 is the rear guide groove, 22 is the oblique adjustment plate, 23 is the oblique waist-shaped hole, 25 is the oblique plate, 26 is the shear center line, 27 is the rolling center line, 28 is the flying shear center line, and 30 is the material head. DETAILED DESCRIPTION

[0025] 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.

[0026] Figure 1 It is a structural principle diagram of a flying shear device in an embodiment of the present invention.

[0027] like Figure 1 As shown, in the prior art, the flying shear device for the slitting process includes a frame, and a front guide groove 1, a shearing mechanism and a rear guide groove 21 fixedly arranged on the frame in sequence along the forward direction of the material. The shearing mechanism is located at the rear side of the front guide groove 1, and includes an upper shearing assembly, a lower shearing assembly and a shearing drive mechanism for driving the upper shearing assembly and the lower shearing assembly to perform shearing. The upper shearing assembly includes an upper flying shear seat 2 and an upper blade 3 fixed to the lower end of the upper flying shear seat 2. The lower shearing assembly includes a lower flying shear seat 4 and a lower blade 5 fixed to the upper end of the lower flying shear seat 4.

[0028] Figure 2 is a front view of the front guide groove in an embodiment of the present invention; Figure 3 yes Figure 1 A partial enlarged view of part A; Figure 4 is a front view of the upper shearing mechanism and the lower shearing mechanism in the embodiment of the present invention when they are in a shearing state; Figure 5 yes Figure 4 A partial enlarged view of part B. Figure 6 yes Figure 1A partial enlarged view of part C.

[0029] Different from the prior art: Figures 1 to 5 As shown, in the flying shear device for the slitting process of this embodiment, the front guide groove 1 is fixedly mounted on the frame by a height adjustment mechanism. The height adjustment mechanism includes a base 6, a plurality of gaskets 7, a top plate 8, and a support frame 9. Two gasket 7 threaded through holes are formed on each gasket 7. A base 6 threaded through hole is formed on the base 6. During installation, select a suitable number of gaskets 7, and then stack the base 6, a suitable number of gaskets 7, and the top plate 8 in sequence from bottom to top, and then tighten them with bolts and nuts 10. The support frame 9 is fixedly mounted on the top plate 8. The front guide groove 1 is fixedly mounted on the support frame 9. The height of the front guide groove 1 is adjusted by selecting a suitable number of gaskets 7.

[0030] The upper shearing assembly also includes an upper wing 11 fixedly mounted on the upper flying shear seat 2 through an upper adjustment mechanism and located on the front side of the upper blade 3. The upper wing 11 includes an upper bracket and an upper arc plate fixedly mounted at one end of the upper bracket. The upper arc plate is concentric with the upper shearing circle 12. The upper shearing circle 12 is a circle formed by the outermost side of the upper shearing blade rotating around the rotation center of the upper shearing seat. The side of the upper arc plate away from the upper bracket also has a plurality of wing guide grooves arranged side by side. The center distance of the wing guide grooves is equal to the center distance of the cutting guide grooves in the cutting process.

[0031] The upper adjustment mechanism includes an upper adjustment plate 13, an upper fastening threaded hole and an upper fastening bolt 14. An upper waist-shaped hole 15 is formed on the upper adjustment plate 13. The upper waist-shaped hole 15 extends along the length direction of the upper shear seat (radial direction of the upper shear circle 12). The upper adjustment plate 13 is fixedly connected to the upper bracket. The upper fastening threaded hole is formed on the upper shear seat. The threaded end of the upper fastening bolt 14 is inserted into the upper waist-shaped hole 15 and then screwed into the upper fastening threaded hole, and is tightened so that the limit end of the upper fastening bolt 14 abuts against the upper adjustment plate 13 through the gasket 7. Figure 4 and Figure 5 As shown, when the position of the upper wing 11 needs to be adjusted, the upper fastening bolt 14 is loosened, the upper adjustment plate 13 is moved up and down, and the upper wing 11 is driven to move up and down to a suitable position (the suitable position is described in detail in the following control method), and then the upper fastening bolt 14 is tightened.

[0032] The lower shearing assembly also includes a lower guard wing 16 fixedly mounted under the lower flying shear seat 4 and located on the front side of the lower blade 5 through a lower adjustment mechanism. The lower guard wing 16 is detachably mounted on the lower shearing seat through a lower adjustment mechanism. The lower guard wing 16 includes a lower bracket and a lower arc plate fixedly mounted at one end of the lower bracket. The lower arc plate is concentric with the lower shearing circle 17. The lower shearing circle 17 is a circle formed by the outermost side of the lower shearing blade rotating around the rotation center of the lower shearing seat. The lower adjustment mechanism includes a lower adjustment plate 18, a lower fastening threaded hole and a lower fastening bolt 19. The lower adjustment plate 18 is fixedly connected to the lower bracket. A lower waist-shaped hole 20 is formed on the lower adjustment plate 18. The lower waist-shaped hole 20 extends along the length direction of the lower guard wing 16 (radial direction of the lower shearing circle 17). Lower fastening threaded hole

[0033] The threaded end of the lower fastening bolt 19 is inserted into the lower waist-shaped hole 20 and then screwed into the lower fastening threaded hole, and the limiting end of the lower fastening bolt 19 abuts against the lower adjustment plate 18. Figure 4 and Figure 5 As shown, when the position of the lower wing 16 needs to be adjusted, the lower fastening bolt 19 is loosened, the lower adjustment plate 18 is moved up and down, and the lower wing 16 is driven to move up and down to a suitable position (the suitable position is described in detail in the following control method), and then the lower fastening bolt 19 is tightened.

[0034] In this embodiment, the upper and lower wings 16 are positionally adjusted by an adjustment mechanism. In other embodiments, considering the installation stability of the wings, wings of different models (referring to wings with different bracket lengths) can also be selected to be directly fixed to the shear seat.

[0035] like Figure 1 and Figure 6 As shown, an opening is provided on the front side of the bottom wall of the rear guide groove 21, and the opening is installed with the inclined plate 25 through the inclined plate 25 adjustment mechanism. The inclined plate 25 adjustment mechanism includes an inclined adjustment plate 22, an inclined fastening threaded hole, and an inclined fastening bolt. An inclined waist-shaped hole 23 is formed on the inclined adjustment plate 22. The inclined waist-shaped hole 23 is arranged horizontally. The oblique fastening threaded hole is formed on the side wall of the rear guide groove 21, and the threaded end of the oblique fastening bolt is inserted into the oblique waist-shaped hole 23 and then screwed into the oblique fastening threaded hole, and the limiting end of the oblique fastening bolt abuts against the oblique adjustment plate 22. When adjusting, loosen the oblique fastening bolt, move the oblique adjustment plate 22 horizontally to the left and right to a suitable distance, and then tighten it again.

[0036] The inclined plate 25 has an inclination angle θ relative to the horizontal plane, 15°≤θ≤25°.

[0037] The shear quality control method of this embodiment comprises the following steps:

[0038] According to the rolling specifications, the guide tube is selected as the front guide groove 1, and the cavity height H of the front guide groove 1 is 3 = A / 2+E 3Among them, A is the diameter of the material, E 3 is a positive integer, 10mm≤E 3 ≤15mm. The difference between the cavity height of the front guide groove 1 and the diameter of the material is controlled to 10mm-15mm, which can guide the forward direction of the material and avoid large friction between the inner wall of the guide groove and the material.

[0039] A first upper arc surface and a first lower arc surface are provided on the outlet end surface of the front guide groove 1. The first upper arc surface is concentrically arranged with the upper shear circle 12, and the distance between the two is L. 1 , 25mm≤L 1 ≤30mm, the first lower arc surface is concentric with the lower shear circle 17, and the distance between them is L 2 , 25mm≤L 2 ≤30mm; a second upper arc surface and a second lower arc surface are provided at the inlet end surface of the rear guide groove 21, the second upper arc surface is concentric with the upper shear circle 12, and the distance between the two is L 3 , 25mm≤L 3 ≤30mm, the second lower arc surface is concentric with the lower shear circle 17, and the distance between them is L 4 , 25mm≤L 4 ≤30mm. By adjusting the distance between the front and rear guide grooves 21 of the flying shear and the shear circle, the material can smoothly enter the corresponding guide groove.

[0040] Adjust the horizontal distance L between the front side of the inclined plate 25 and the center line 28 of the flying shear 5 , 1400mm≤L 5 ≤1600mm.L 5 The value of is measured through many experiments, and it is found that at 1400-1600mm, the sheared material head 30 can be accurately blocked. Among them, the flying shear center line 28 is the line connecting the rotation center of the upper shear seat and the rotation center of the lower shear seat. The movement trajectory of the sheared head is a relatively fixed route. After many experiments, it is found that the control L 5 At 1400-1600mm, the sheared material head 30 can be accurately blocked. In specific operation, according to the specifications of the incoming materials, the inclined plate 25 adjustment mechanism is used to adjust the position of the inclined plate 25 to better block the material head 30. In specific operation, according to the specifications of the incoming materials, the upper and lower adjustment mechanisms are used to adjust the position of the wing to better maintain the stability of the material shape.

[0041] Adjust the height difference Δh between the shear center line 26 and the rolling center line 27 so that the shear center line 26 is lower than the rolling center line 27, and the height difference Δh ≤ A / 2. Preferably, Δh=A / 2. The adjustment of the height difference Δh can be achieved by adding or removing the gasket 7. Among them, the shear center line 26 is the horizontal line where the point where the upper blade 3 and the lower blade 5 overlap during shearing. During shearing, the point where the upper blade 3 and the lower blade 5 overlap (i.e., the shearing point) is controlled to be lower than the rolling center line 27, preferably, at the same height as the lowest point of the material (at this time, Δh=A / 2), to avoid the shear head being too high and jumping into the rear guide groove 21.

[0042] Figure 7 This is a schematic diagram of the upper (lower) blade just coming into contact with the material; Figure 8 This is a schematic diagram of the upper (lower) blade just separating from the material.

[0043] Adjust the exit angle α of the shearing mechanism, α>β, and 30°≤α≤90°, 30°≤β≤90°. β is the shearing angle of the shearing mechanism. Among them, the shearing angle β is the angle formed by the upper blade 3 (lower blade 5) and the material just in contact with the vertical surface, such as Figure 7 As shown in Figure 2. The exit angle α is the angle between the flying shear blade and the vertical plane when it leaves the material. Figure 8 The exit angle is greater than the shear angle, which means that the exit speed is greater than the shear speed. This time difference is used to separate the cut head and the material head to prevent the cut head from entering the guide groove.

[0044] When the upper blade 3 and the lower blade 5 are in the shearing state, the distance H between the highest point of the lower wing 16 and the shearing center line 26 is adjusted. 1 ,H 1 = A / 2+E 1 When the upper blade 3 and the lower blade 5 are adjusted to be in the shearing state, the distance H between the lowest point of the bottom of the wing guide groove and the shear center line 26 2 , H 2 =A / 2+E 2 When the upper wing arc plate is controlled to move to the lowest point, the lowest point of the bottom of the wing guide groove is not lower than the shear center line 26, and the distance between the two is not less than 16mm (A / 2); when the lower wing arc plate is controlled to move to the highest point, the highest point of the upper wing is higher than the shear center line 26, and the distance between the two is not less than A / 2.

[0045] Among them, A is the material diameter, E 1 and E 2 is a positive integer, 1mm≤E 1 ≤3mm, 15mm≤E 2≤20mm. After the material head 30 is sheared, the upper and lower wings 11 and 16 limit the range of the material's up and down shaking, which can effectively prevent the material from shaking and keep the material stable. When the head of the material is lifted up by the lower wing 16, the upper wing 11 slaps it to prevent it from shaking upward excessively. When the head of the material bends down due to gravity, the lower wing 16 supports it to prevent it from shaking downward. According to experimental measurements, 1mm≤E 1 ≤3mm, 15mm≤E 2 When the diameter is ≤20mm, the material stability effect is the best.

[0046] According to one embodiment of the present invention, it is applied to the Φ32mm*2 slitting process. The upper wing 11 has two wing grooves. The center distance between the two wing grooves and the two slitting guide grooves in the slitting process is equal. The shear quality control method of the flying shear device for the slitting process in this embodiment includes the following steps:

[0047] A first upper arc surface and a first lower arc surface are provided on the outlet end surface of the front guide groove 1, and the distance between the first upper arc surface and the upper shear circle 12 is L 1 , 25mm≤L 1 ≤30mm, the distance between the first lower arc surface and the lower shear circle 17 is L 2 , 25mm≤L 2 ≤30mm; a second upper arc surface and a second lower arc surface are provided on the inlet end surface of the rear guide groove 21, and the distance between the second upper arc surface and the upper shear circle 12 is L 3 , 25mm≤L 3 ≤30mm, the distance between the second lower arc surface and the lower shear circle 17 is L 4 , 25mm≤L 4 ≤30mm.

[0048] Select a suitable conduit as the front guide groove 1, and the cavity height H of the front guide groove 1 3 Between 42mm-47mm.

[0049] Adjust the horizontal distance L between the front side of the inclined plate 25 and the center line 28 of the flying shear 5 , 1400mm≤L 5 ≤1600mm.

[0050] Adjust the distance between the rolling center line 27 and the shearing center line 26, and the shearing center line 26 is 10mm-15mm lower than the rolling center line 27.

[0051] Adjust the exit angle α of the shearing mechanism, α>β, and 30°≤α≤90°, 30°≤β≤90°.

[0052] When the upper blade 3 and the lower blade 5 are in the shearing state, the distance H between the highest point of the lower wing 16 and the shearing center line 26 is adjusted. 1 ,H 1 = 16+E 1 When the upper blade 3 and the lower blade 5 are adjusted to be in the shearing state, the distance H between the lowest point of the bottom of the wing guide groove and the shear center line 26 2 , H 2 =16+E 2 . 1mm≤E 1 ≤3mm, 15mm≤E 2 ≤20mm. When the upper wing arc plate is controlled to move to the lowest point, the lowest point of the bottom of the wing guide groove is not lower than the shear center line 26, and the distance between the two is not less than 16mm (A / 2). When the lower wing arc plate is controlled to move to the highest point, the highest point of the upper wing is higher than the shear center line 26, and the distance between the two is not less than A / 2.

[0053] In summary, the above is only one specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A shearing quality control method for a flying shear device used in a slitting process, wherein the flying shear device comprises a front guide groove, a shearing mechanism and a rear guide groove sequentially arranged along the advancing direction of the material, the shearing mechanism comprises an upper shearing assembly, a lower shearing assembly and a shearing drive mechanism for driving the upper shearing assembly and the lower shearing assembly to perform shearing actions, the upper shearing assembly comprises an upper flying shear seat and an upper blade fixed at the lower end of the upper flying shear seat, the lower shearing assembly comprises a lower flying shear seat and a lower blade fixed at the upper end of the lower flying shear seat, characterized in that: The upper shearing assembly further comprises an upper guard wing detachably fixedly mounted on the upper flying shear seat and located on the front side of the upper blade, and the lower shearing assembly further comprises a lower guard wing detachably fixedly mounted under the lower flying shear seat and located under the front side of the lower blade, The shearing quality control method comprises the following steps: adjusting the distance H1 between the highest point of the lower wing and the shearing center line when the upper blade and the lower blade are in the shearing state, H1= A / 2+E1; adjusting the distance H2 between the lowest point of the upper wing and the shearing center line when the upper blade and the lower blade are in the shearing state, H2=A / 2+E2, wherein A is the material diameter, E1 and E2 are positive integers, and E2>E1.

2. The shear quality control method of a flying shear device for slitting process according to claim 1 is characterized in that: 1mm≤E1≤3mm, 15mm≤E2≤20mm.

3. The shear quality control method of a flying shear device for slitting process according to claim 1 is characterized in that: The lower end of the upper wing also has a plurality of wing guide grooves arranged side by side, the center distance of the wing guide grooves is equal to the center distance of the cutting guide grooves in the cutting process, and the lowest point of the upper wing is the lowest point of the groove bottom of the wing guide groove.

4. The shear quality control method of a flying shear device for slitting process according to claim 1 is characterized in that: The fixing mechanism that can be used for the fixing of the fixing plate is to fix the fixing plate on the fixing plate, and the fixing mechanism can be fixed on the fixing plate by the fixing mechanism.

5. The shear quality control method of a flying shear device for slitting process according to claim 1 is characterized in that: The shearing quality control method further comprises the following steps: adjusting a height difference Δh between a shearing center line and a rolling center line so that the shearing center line is lower than the rolling center line and the height difference Δh≥A / 2.

6. The shear quality control method of a flying shear device for slitting process according to claim 1 is characterized in that: The shear quality control method also includes the following steps: selecting a conduit as a front guide groove according to rolling specifications, the cavity height of the front guide groove H3= A / 2+E3, and E3 is a positive integer, 10mm≤E3≤15mm.

7. The shear quality control method of a flying shear device for slitting process according to claim 6 is characterized in that: The following steps are also included: A first upper arc surface and a first lower arc surface are provided on the outlet end face of the front guide groove, and the distance between the first upper arc surface and the upper shear circle is L1, 25mm≤L1≤30mm, and the distance between the first lower arc surface and the lower shear circle is L2, 25mm≤L2≤30mm; a second upper arc surface and a second lower arc surface are provided on the inlet end face of the rear guide groove, and the distance between the second upper arc surface and the upper shear circle is L3, 25mm≤L3≤30mm, and the distance between the second lower arc surface and the lower shear circle is L4, 25mm≤L4≤30mm.

8. The shear quality control method of a flying shear device for slitting process according to claim 1 is characterized in that: An opening is provided at the front side of the bottom wall of the rear guide groove, and an inclined plate is installed at the opening through an inclined plate adjustment mechanism. The shear quality control method also includes the following steps: adjusting the horizontal distance L5 between the frontmost side of the inclined plate and the center line of the flying shear, 1400mm≤L5≤1600mm.

9. A shearing quality control method for a flying shear device for slitting process according to claim 8, characterized in that: The inclined plate has an inclination angle θ relative to the horizontal plane, 15°≤θ≤25.

10. The shear quality control method of a flying shear device for slitting process according to claim 1, characterized in that: The shearing quality control method further comprises the following steps: adjusting the exit angle α of the shearing mechanism, α>β, and 30°≤α≤90°, wherein β is the shearing angle of the shearing mechanism.

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