CN214160939U - Strip steel straightening device - Google Patents
Strip steel straightening device Download PDFInfo
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- CN214160939U CN214160939U CN202022720031.8U CN202022720031U CN214160939U CN 214160939 U CN214160939 U CN 214160939U CN 202022720031 U CN202022720031 U CN 202022720031U CN 214160939 U CN214160939 U CN 214160939U
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Abstract
The utility model relates to a belted steel straightener, which comprises a frame, set gradually in the frame and extend roller set, flat roller set of exhibition and homogenization roller set, extend the roller set including the first extension roller and the second extension roller of relative dislocation set, the homogenization roller set is including the first homogenization roller and the second homogenization roller of relative dislocation set, belted steel therefrom passes the circular arc that forms continuous a plurality of crooked opposite directions, thereby it is right residual stress on the belted steel carries out the homogenization. The strip steel straightening device can eliminate the wave-shaped influence caused by the processing of incoming materials, eliminate transverse bending and longitudinal bending generated by uneven extension and homogenize residual stress, thereby obtaining high-strength strip steel, and being particularly suitable for the processing production of ultrahigh-strength strip steel.
Description
Technical Field
The utility model relates to a cold, hot rolling belted steel production field, especially a belted steel straightener.
Background
The strip steel is a narrow and long steel plate produced by various steel rolling enterprises in order to meet the requirements of different industrial departments on industrial production of various types of metal or mechanical products. The strip steel is also called steel strip, the width is within 1300mm, and the length is slightly different according to the size of each roll. The ultra-high strength strip steel is strip steel with yield strength more than 1000Mpa, the strip steel has poor shape of a raw material in the production process, has larger wave shape and high strength, is difficult to be flattened by a conventional pressing method, causes local bending of the strip steel, and has poor flatness.
There are also prior art techniques for improving flatness by applying tension to the strip, however, both machining and strengthening processes to the steel can cause residual stresses. Residual Stress (Residual Stress) refers to the internal Stress of self-equilibrium that remains in the object after the action of external force or uneven temperature field, etc. is eliminated. Such as cold drawing, bending, machining, rolling, shot blasting, casting, forging, welding, and heat treating metals, residual stresses may be caused by non-uniform plastic deformation or transformation. Residual stresses can cause warping or distortion, or even cracking, of the part after improper heat treatment, welding, or machining of the part. Or the surface of the steel plate is cracked after quenching and grinding. The presence of residual stresses sometimes does not immediately manifest itself as a defect, but cracks and breakages occur when the total stress exceeds the strength limit during operation due to the superposition of operating stresses and residual stresses. Due to the uneven distribution of residual stresses, the strip may crack and break when subjected to high strengths, such as 1000 Mpa. Therefore, although the flatness of the ultra-high-strength strip steel can be improved by applying a tensile force, the yield strength is reduced, and the overall mechanical performance of the strip steel cannot be improved.
Therefore, improving the straightness of the cold and hot high-strength steel strips and reducing the residual stress are always production key points and difficulties of strip steel production enterprises, and especially for the ultra-high-strength strip steel with the yield strength of more than 1000Mpa, the quality guarantee by the current process technology is very difficult, so that the method is a bottleneck in the current high-strength steel production field, and the product quality improvement and the industrial structure upgrade are seriously hindered.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a belted steel straightener in order to overcome the not good problem of current belted steel straightness, residual stress distributes and all causes the quality grade to descend.
The first tension T0 acting on the inlet tension of the strip steel is provided at the inlet of the device, the third tension T2 acting on the outlet tension of the strip steel is provided at the outlet of the device, the second tension T1 acting on the strip steel is provided by the flattening roll group, and the first tension, the second tension and the third tension can be set according to the processing requirements of the strip steel, for example: the first tension is in the opposite direction to the third tension, and the absolute value of the third tension is greater than the first tension, the second tension is equal to the third minus the tension impairment of the set of homogenization rollers, and the second tension is greater in magnitude than the first tension, so that the strip moves in the direction of the second tension.
Preferably, the first tension and the third tension are both horizontal, so that the strip is dragged and moved from left to right, and passes through the extension roller group, the flattening roller group and the homogenization roller group in sequence, wherein:
the extension roller set makes belted steel extended through the dislocation corresponding mode, preferably, the extension roller set includes relative dislocation set's first extension roller and second extension roller, belted steel is followed first extension roller with pass between the second extension roller, and contact in proper order first extension roller with the second extension roller, first extension roller with the second extension roller is right belted steel is at the perpendicular to the ascending effort size of belted steel direction of motion is the same, opposite direction. The relative dislocation means that the rolling surfaces of the first extension roller and the second extension roller are opposite, and the dislocation means that the rolling surfaces of the first extension roller and the second extension roller are not opposite but staggered for a certain distance in the horizontal direction and oppositely penetrate for a certain distance in the vertical direction, so that the acting forces of the first extension roller and the second extension roller on the strip steel in the direction vertical to the movement direction of the strip steel are opposite, and the strip steel is extended after passing through the extension roller set, so that the larger wave-shaped influence caused by the incoming material of the strip steel can be eliminated. The elongation of the strip is dependent on the second tension and the degree of bending of the strip by the pair of stretching rolls, the elongation being proportional to the second tension.
In the utility model, the elongation rates of the upper and lower surfaces of the strip steel generated by the first and second stretching rollers are often in an asymmetric state along the neutral layer of the strip steel (namely the elongation rates of the strip steel generated by the upper bending section and the lower bending section formed by the stretching roller sets are unequal), so that the flattening roller sets are required to supplement, and the elongation rates of the upper and lower surfaces are symmetric; if the flattening roller group is not arranged, the asymmetric elongation rate causes the strip steel to have larger longitudinal bending, and the residual stress is not very unbalanced.
The utility model discloses in, homogenization roller set is including relative dislocation set's first homogenization roller and second homogenization roller, first homogenization roller with second homogenization roller all includes one row at least continuous rotatable roll, belted steel passes from between the rotatable roll, forms a plurality of continuous crooked opposite direction's circular arcs, thereby it is right residual stress on the belted steel carries out the homogenization. The relative dislocation refers to the fact that the rolling surfaces of the first homogenizing roller and the second homogenizing roller are opposite, the dislocation refers to the fact that the rolling surfaces of the first homogenizing roller and the second homogenizing roller are not opposite, but staggered by a certain distance in the horizontal direction and oppositely and deeply inserted into a certain distance in the vertical direction, so that the acting force directions of the first homogenizing roller and the second homogenizing roller on the strip steel in the direction vertical to the moving direction of the strip steel are opposite, the strip steel forms a plurality of continuous arcs with opposite bending directions when passing through the rolling surfaces of the two rows of rollers, the residual stress is repeatedly reduced through the forming process of a plurality of arc sections with opposite directions, and finally the residual stress is homogenized. The significance of this is: after the strip steel passes through the flattening roller group, transverse bending and longitudinal bending are easy to occur; through the action of the homogenizing roller group, transverse bending and longitudinal bending generated by uneven extension are further eliminated, and residual stress is homogenized, so that the yield strength is improved, and preferably, the first homogenizing roller and the second homogenizing roller respectively comprise at least 3 rotatable rollers, so that the homogenizing effect is ensured.
In the utility model, the relative staggered depth of the roller group refers to the distance between the contact point of the strip steel and the opposite roller and the central line of the opposite roller. For example, if the offset depth is 0, the movement direction of the strip passing through the opposite rollers is not changed, and if the offset depth is larger, the movement direction of the strip is changed to a larger extent, so that the strip is stretched and the elongation is changed.
The utility model discloses in, the nip roll is preferred to be become by 2 big rollers and 1 little roller group, is isosceles triangle and arranges. The large roller and the small roller are described according to the relative sizes of the diameters of the large roller and the small roller, the large roller and the small roller are not absolute, the large roller and the small roller are arranged in an isosceles triangle, the contact area of the strip steel and the small roller is large, and stable operation and processing effects of the strip steel are facilitated. Similarly, the description of the stretching roller and the homogenizing roller is relative to the description of the large roller and the small roller,
the specific scheme is as follows:
the utility model provides a strip steel straightener, includes the frame, set gradually extension roller set, flattening roller set and homogenization roller set in the frame, wherein:
the extension roller group comprises a first extension roller and a second extension roller which are arranged in a relatively staggered mode, and the strip steel penetrates through the space between the first extension roller and the second extension roller and sequentially contacts the first extension roller and the second extension roller;
the flattening roller group comprises flattening rollers, and the flattening rollers are positioned on one side of the movement direction of the strip steel and generate a tension effect on the strip steel;
the homogenizing roller group comprises a first homogenizing roller and a second homogenizing roller which are arranged in a relative staggered mode, and the strip steel passes through the space between the first homogenizing roller and the second homogenizing roller to form a plurality of continuous arcs with opposite bending directions, so that residual stress on the strip steel is homogenized.
Further, the frame is provided with an operation panel, and the stretch roller group, the flattening roller group and the homogenizing roller group are all installed on the surface of the operation panel.
Further, the number of the extension roller sets is 1 or more.
Further, the first extension roller and/or the second extension roller are/is composed of 2 large rollers and 1 small roller and arranged in an isosceles triangle shape.
Furthermore, the first extension roller and/or the second extension roller are/is connected with a first depth adjusting device, the first depth adjusting device pushes the first extension roller and/or the second extension roller to displace, and the relative staggered depth of the first extension roller and the second extension roller is changed, so that the tension of the first extension roller and/or the second extension roller on the strip steel is changed.
Furthermore, the flattening roll is composed of 2 big rolls and 1 small roll and is arranged in an isosceles triangle shape.
Furthermore, the nip roll is connected with a second depth adjusting device, and the second depth adjusting device pushes the nip roll to displace, so that the tension of the band steel acted on by the nip roll is changed.
Further, the first homogenizing roller and/or the second homogenizing roller consists of a row of large rollers and a row of small rollers, the small rollers are positioned between two adjacent large rollers, the number of the large rollers is at least 3, and the number of the small rollers is at least 3.
Further, the first homogenizing roller and/or the second homogenizing roller are/is connected with a third depth adjusting device, the third depth adjusting device pushes the first homogenizing roller and/or the second homogenizing roller to displace, and the staggered depth of the first homogenizing roller and/or the second homogenizing roller is changed, so that the tension of the first homogenizing roller and/or the second homogenizing roller on the steel strip is changed.
Furthermore, the strip steel straightening device is also provided with a positioning roller, the positioning roller is positioned on the homogenizing roller set along the moving direction of the strip steel, and the positioning roller enables the strip steel to move along the horizontal direction.
Has the advantages that:
the strip steel straightening device is used for matching the tension effect through the extension roller set aiming at the characteristics of strip steel, so that the elongation rate of the strip steel is changed, and the wave-shaped influence caused by the incoming material processing is eliminated.
Furthermore, the flattened strip steel is easy to generate transverse bending and longitudinal bending, the transverse bending and the longitudinal bending generated by uneven extension are eliminated through the homogenizing roller set, and the residual stress is homogenized, so that the high-strength strip steel is obtained.
The strip steel straightening device can effectively improve the plate shape, eliminate the residual stress, has good effect and is particularly suitable for the processing production of the ultrahigh-strength strip steel.
Drawings
In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings will be briefly described below, and it is to be understood that the drawings in the following description are only related to some embodiments of the present invention, and are not intended to limit the present invention.
FIG. 1 is a schematic structural view of a strip straightener provided in an embodiment 1 of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1, fig. 1 shows a schematic structural view of a strip straightening apparatus including a frame 10, and a strip 0 moves from the left side to the right side of the frame 10 to complete a straightening process. Be equipped with 1# extension roller set 1, 2# extension roller set 2, flattening roller set 3, homogenization roller set 4, registration roller 5 in proper order on the frame 10, wherein:
the stretch roller group includes 2 roller groups having the same structure, i.e., a 1# stretch roller group 1 and a 2# stretch roller group 2, and the 1# stretch roller group 1 will be described as an example. 1# extension roller set 1 includes relative dislocation set's first extension roller 11 and second extension roller 12, belted steel 0 follows first extension roller 11 with pass between the second extension roller 12, and contact in proper order first extension roller 11 with second extension roller 12, first extension roller 11 with second extension roller 12 is right belted steel 0 is at the perpendicular to the ascending effort size of belted steel 0 direction of motion is the same, and the opposite direction. And then enters a No. 2 extension roller group 2, and the strip steel 0 is further extended to eliminate a larger wave shape caused by the incoming materials. Because the super-high-strength steel incoming material has poor plate shape and large wave shape and can be eliminated by applying a certain elongation rate, the 1# extension roller group 1 and the 2# extension roller group 2 are matched to complete the removal of the incoming material wave shape. The first stretching roller 11 and the second stretching roller 12 may be composed of 2 large rollers and 1 small roller, and arranged in an isosceles triangle.
The 1# extension roller group 1 is also connected with a 1# depth adjusting device 13, such as a compression cylinder or a push rod, and the 1# depth adjusting device 13 changes the relative staggered depth of the first extension roller 11 and the second extension roller 12 so as to change the adjustment of the elongation of the strip steel 0. Similarly, the 2# extension roller group 2 is also connected with the 2# depth adjusting device 21.
Because the strength of the strip steel is high, the elongation can be generated by larger deformation compared with the mild steel, for example, the strength of the strip steel is more than 1000Mpa, namely sigma s is more than or equal to 1000Mpa, the elongation required by generating plastic deformation is epsilon which is sigma s/E, E is elastic modulus, the elastic modulus of the steel in a cold state is 210000Mpa, therefore, the higher the strength of the strip steel is, the larger the elongation required by the plastic deformation is, the more the yield strength is more than 1000Mpa, the plastic elongation of the strip steel is more than or equal to 0.47%, therefore, the utility model discloses a 1# depth adjusting device 13 changes the relative staggered depth of the rollers in the 1# extension roller group, and changes the elongation of the strip steel 0.
After passing through the No. 2 extension roller group 2, the strip steel 0 enters the flattening roller group 3, and the flattening roller group 3 generates a second tension T1 which is the same as the movement direction of the strip steel 0 through the flattening rollers to the strip steel 0. The flattening roll can be composed of 2 big rolls and 1 small roll, and is arranged in an isosceles triangle.
The flattening roller group 3 is also connected with a 3# depth adjusting device 31, and the flattening roller group 3 is pushed to displace through the 3# depth adjusting device 31 so as to change the size of the second tension T1.
After passing through the flattening roller group 3, the strip steel 0 is easy to be subjected to transverse bending and longitudinal bending, and for this reason, the strip steel continues to enter the homogenizing roller group 4, the homogenizing roller group 4 comprises a first homogenizing roller 41 and a second homogenizing roller 42 which are arranged in a relative staggered mode, and the strip steel 0 passes through the space between the first homogenizing roller 41 and the second homogenizing roller 42 to form a plurality of continuous circular arcs with opposite bending directions, so that the residual stress on the strip steel 0 is homogenized. The first and second homogenizing rollers 41 and 42 are connected with a # 4 depth adjusting device 43 and a # 5 depth adjusting device 44, respectively, so that the relative staggered depth of the first and second homogenizing rollers 41 and 42 is adjusted. The homogenizing roller consists of one row of large rollers and one row of small rollers, the small rollers are located between two adjacent large rollers, the number of the large rollers is at least 3, and the number of the small rollers is at least 3.
The positioning rollers 5 provide acting force to pull the strip steel with the residual stress reduced out of the device, so that the strip steel processing is completed.
When in use, the process setting can be carried out according to the processing requirement of the strip steel 0, and comprises the following steps:
1. setting an outlet tension T2, and calculating an intermediate tension T1 and an inlet tension T0;
2. setting the elongation of the 1# stretching roller group and the 2# stretching roller group, and adjusting the 1# stretching roller press-in depth and the 2# stretching roller press-in depth through the 1# depth adjusting device 13 and the 2# depth adjusting device 21 to match the elongation;
3. the depth of penetration of the first homogenizing roller 41 and the second homogenizing roller 42 in the homogenizing roller set 4 is set, and the 4# depth adjusting device 43 and the 5# depth adjusting device 44 are adjusted to the corresponding depth until the transverse bending and longitudinal bending of the strip are eliminated.
The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention, and can be right to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. The utility model provides a strip steel straightener, includes the frame, its characterized in that: set gradually extension roller set, flattening roller set and homogenization roller set in the frame, wherein:
the extension roller group comprises a first extension roller and a second extension roller which are arranged in a relatively staggered mode, and the strip steel penetrates through the space between the first extension roller and the second extension roller and sequentially contacts the first extension roller and the second extension roller;
the flattening roller group comprises flattening rollers, and the flattening rollers are positioned on one side of the movement direction of the strip steel and generate a tension effect on the strip steel;
the homogenizing roller group comprises a first homogenizing roller and a second homogenizing roller which are arranged in a relative staggered mode, and the strip steel passes through the space between the first homogenizing roller and the second homogenizing roller to form a plurality of continuous arcs with opposite bending directions, so that residual stress on the strip steel is homogenized.
2. The strip straightener of claim 1, wherein: the frame is equipped with the operation panel, stretch roller set, it all installs to flatten the roller set and homogenization roller set the operation panel surface.
3. The strip straightener of claim 1, wherein: the number of the extension roller sets is 1 or more.
4. The strip straightener of claim 1, wherein: the first extension roller and/or the second extension roller are/is composed of 2 large rollers and 1 small roller and are arranged in an isosceles triangle shape.
5. The strip straightener of any one of claims 1 to 4, wherein: the first extension roller and/or the second extension roller are/is connected with a first depth adjusting device, the first depth adjusting device pushes the first extension roller and/or the second extension roller to displace, and the relative staggered depth of the first extension roller and the second extension roller is changed, so that the tension of the first extension roller and/or the second extension roller on the strip steel is changed.
6. The strip straightener of claim 1, wherein: the nip roll comprises 2 big rollers and 1 little roller, is isosceles triangle and arranges.
7. The strip straightener of claim 1 or 6, wherein: the nip roll is connected with a second depth adjusting device, and the second depth adjusting device pushes the nip roll to displace, so that the nip roll is changed to act on the tension of the strip steel.
8. The strip straightener of claim 1, wherein: the first homogenizing roller and/or the second homogenizing roller consists of a row of large rollers and a row of small rollers, the small rollers are positioned between two adjacent large rollers, the number of the large rollers is at least 3, and the number of the small rollers is at least 3.
9. The strip straightener of claim 1 or 8, wherein: the first homogenizing roller and/or the second homogenizing roller are/is connected with a third depth adjusting device, the third depth adjusting device pushes the first homogenizing roller and/or the second homogenizing roller to displace, and the staggered depth of the first homogenizing roller and/or the second homogenizing roller is changed, so that the tension of the first homogenizing roller and/or the second homogenizing roller on the steel strip is changed.
10. The strip straightener of any one of claims 1 to 4, wherein: the strip steel straightening device is further provided with a positioning roller, the positioning roller is positioned on the homogenizing roller set along the moving direction of the strip steel, and the positioning roller enables the strip steel to move along the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720031.8U CN214160939U (en) | 2020-11-20 | 2020-11-20 | Strip steel straightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720031.8U CN214160939U (en) | 2020-11-20 | 2020-11-20 | Strip steel straightening device |
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| Publication Number | Publication Date |
|---|---|
| CN214160939U true CN214160939U (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022720031.8U Active CN214160939U (en) | 2020-11-20 | 2020-11-20 | Strip steel straightening device |
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| Country | Link |
|---|---|
| CN (1) | CN214160939U (en) |
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2020
- 2020-11-20 CN CN202022720031.8U patent/CN214160939U/en active Active
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