CN115254967A - Strip steel coiling method - Google Patents
Strip steel coiling method Download PDFInfo
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- CN115254967A CN115254967A CN202210925513.8A CN202210925513A CN115254967A CN 115254967 A CN115254967 A CN 115254967A CN 202210925513 A CN202210925513 A CN 202210925513A CN 115254967 A CN115254967 A CN 115254967A
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- strip steel
- coiling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
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Abstract
The application provides a method for coiling strip steel, which relates to the technical field of hot rolling in the metallurgical industry, and comprises the following steps: step 1: if the head of the strip steel enters the coiling machine, executing the step 2; if the head of the strip steel does not enter the coiling machine, manually coiling the head of the strip steel into the coiling machine, judging the length of the strip steel on the layer cooling roller way, and if the length of the strip steel is too long, executing the step 2; step 2: before coiling, the second coiling-aid roller and the third coiling-aid roller are opened to the maximum, the first coiling-aid roller is closed to the position of a steel coil in the coiling machine, and meanwhile, the side guide plate is closed to clamp the strip steel to a micro-bulge; and step 3: and rotating the coiling drum of the coiler forward and rotating the conveying roller way reversely at the same time until the strip steel is coiled. The invention can safely and quickly coil the strip steel on the transport roller, thereby saving time and improving efficiency; according to the invention, all strip steel on the transport roller way can be coiled by only one coiling machine; the invention can quickly process accidents by utilizing the inherent equipment of the production field.
Description
Technical Field
The application relates to the technical field of hot rolling in the metallurgical industry, in particular to a strip steel coiling method.
Background
After the hot rolling recoiling machine piles steel, the recoiling machine is needed to be used for manually recoiling the strip steel on the transport roller way, the strip steel on the transport roller way has certain wrinkles due to overlong length, and the phenomenon of incompact coiling of the steel coil often occurs after recoiling, so that the recoiling machine can not finish the recoiling of all the strip steel on the transport roller way, the rest part needs to be recoiled by other recoiling machines after cutting, and the two recoiling machines are needed to simultaneously manually unload and hoist the steel coil, therefore, the time for recovering the steel tapping after the fault is late, and the production time needs to be prolonged by about 12 minutes; in addition, the coil of steel is relatively flat, which makes coil stripping difficult.
Disclosure of Invention
The invention aims to provide a method for coiling strip steel, which has the advantages of saving time and improving efficiency, and can finish the coiling of all strip steel on a transport roller way by only one coiling machine so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for coiling strip steel is applied to a hot rolling production line, the hot rolling production line is sequentially provided with a finishing mill, a transport roller way, a coiling machine and a coil stripping trolley according to the running direction, the transport roller way comprises a side guide plate front transport roller way, a side guide plate position transport roller way and a layer cooling roller way, and one end of the layer cooling roller way is provided with a layer cooling outlet;
the coiler sequentially comprises a side guide plate, a pinch roll, an upper pinch roll, a lower pinch roll, a first wrapper roll, a second wrapper roll, a third wrapper roll and a winding drum according to the running direction of a hot rolling production line, wherein a roll gap is formed between the upper pinch roll and the lower pinch roll;
the method comprises the following steps:
step 1: if the head of the strip steel enters the coiling machine, executing the step 2; if the head of the strip steel does not enter the coiling machine, manually coiling the head of the strip steel into the coiling machine, and judging the length of the strip steel on a layer cooling roller way, and if the length of the strip steel is too long, executing the step 2;
and 2, step: before coiling, the second coiling-aid roller and the third coiling-aid roller are opened to the maximum, the first coiling-aid roller is closed to the position of a steel coil in the coiling machine, and meanwhile, the side guide plate is closed to clamp the strip steel to be slightly bulged;
and step 3: and rotating the coiling drum of the coiler forward and rotating the conveying roller way reversely at the same time until the strip steel is coiled.
As a still further scheme of the invention: judging whether the length of the strip steel on the layer cooling roller way is too long or not according to the position of the head of the strip steel, and judging that the length of the strip steel on the layer cooling roller way is too long when the head of the strip steel reaches a layer cooling outlet; and judging whether the length of the strip steel on the layer cooling roller way is too long or not according to the length of the finish rolling residual plate blank of the finish rolling machine, and judging that the length of the strip steel on the layer cooling roller way is too long when the length of the finish rolling residual plate blank is less than or equal to 2/3 of the total length of the plate blank.
As a still further scheme of the invention: before the coiling machine coils the strip steel, the strip steel on the transport roller way at least 5 meters in front of the side guide plate is leveled.
As a still further scheme of the invention: and closing the first wrapper roll to a steel coil in the coiling machine to enable the first wrapper roll to be in contact with the strip steel, wherein the first wrapper roll does not generate pressure, and the action speed of the first wrapper roll is 40-60 mm/s.
As a still further scheme of the invention: and closing the side guide plates to clamp the strip steel to be slightly bulged, and enabling the opening degree of the side guide plates to be smaller than the actual width of the strip steel by 1-5mm.
As a still further scheme of the invention: and rotating the coiling drum of the coiler forward and rotating the conveying roller way reversely at the same time until the strip steel is coiled, wherein the rotating speed of the coiling drum is 1.5-2.5 m/s, and the rotating speed of the conveying roller way is 0.5-1 m/s.
As a still further scheme of the invention: when the strip steel is coiled until the tail of the strip steel reaches the front of the coiling machine, the reel stops rotating, and the coil stripping trolley is controlled to ascend to contact a steel coil in the coiling machine without generating pressure; and rotating the winding drum to enable the tail part of the strip steel to complete coil stripping at one time.
As a still further scheme of the invention: judging whether the strip steel is bent or not in the process of coiling the strip steel and whether the possibility of generating coil loosening in a coiling machine exists or not; when the steel coil in the coiling machine is likely to be loosened due to the bending, controlling the roll gap between the upper pinch roll and the lower pinch roll to be 15-50mm, and feeding the bent strip steel into the coiling machine; and controlling the bent strip steel to reach the position below the pressing roller, and controlling the pressing roller to descend to eliminate bending.
As a still further scheme of the invention: the thickness of the strip steel is less than or equal to 6.0mm.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can safely and quickly coil the strip steel on the conveying roller way, not only saves time, but also improves efficiency, and avoids the phenomenon that the production time is influenced because the coiled steel coil is too large in coil diameter and can not be unloaded due to coil loosening;
3. the invention can finish the coiling of all strip steel on the transport roller way only by one coiler;
2. the invention can quickly process the accident by utilizing the inherent equipment of the production field without additionally adding equipment and modifying programs.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.
For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.
Fig. 1 is a flowchart of a method for coiling a steel strip according to an embodiment of the present disclosure.
FIG. 2 is a schematic structural diagram of a hot rolling line of a strip coiling method according to an embodiment of the present application.
The following are marked in the figure:
1. a reel; 3. a side guide plate; 4. a conveying roller way; 5. coil stripping trolley; 7. strip steel; 8. a coiler frame; 9. a finishing mill;
21. a first wrapper roller; 22. a second wrapper roll; 23. a third auxiliary winding roller;
41. a conveying roller way is arranged at the side guide plate; 42. a side guide plate front conveying roller way; 43. a layer cooling roller way;
61. an upper pinch roll; 62. a lower pinch roll; 63. and a pressure roller.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1-2, the embodiment of the present application provides a method for coiling strip steel, which is applied to a hot rolling production line, the hot rolling production line is sequentially provided with a finishing mill 9, a transport roller table 4, a coiler and an uncoiling trolley 5 according to a running direction, the transport roller table 4 comprises a side guide plate front transport roller table 42, a side guide plate position transport roller table 41 and a layer cooling roller table 43, and one end of the layer cooling roller table 43 is provided with a layer cooling outlet;
the coiler sequentially comprises a side guide plate 3, a pinch roll 63, an upper pinch roll 61, a lower pinch roll 62, a first wrapper roll 21, a second wrapper roll 22, a third wrapper roll 23 and a winding drum 1 according to the running direction of a hot rolling production line, and a roll gap is formed between the upper pinch roll 61 and the lower pinch roll 62;
the method comprises the following steps:
step 1: if the head of the strip steel 7 enters the coiling machine, executing the step 2; if the head of the strip steel 7 does not enter the coiling machine, manually coiling the head of the strip steel 7 into the coiling machine, judging the length of the strip steel 7 on the layer cooling roller 43, and executing the step 2 when the length of the strip steel 7 is too long or the length of the strip steel 7 is larger than a set value;
further, whether the length of the strip steel 7 on the layer cooling roller way 43 is too long or not is judged according to the head position of the strip steel 7, and preferably, when the head of the strip steel 7 reaches a layer cooling outlet, the length of the strip steel 7 on the layer cooling roller way 43 is judged to be too long; optionally, judging whether the length of the strip steel 7 on the layer cooling roller way 43 is too long according to the length of the residual plate blank after finish rolling by the finishing mill 9, and judging that the length of the strip steel 7 on the layer cooling roller way 43 is too long when the length of the residual plate blank after finish rolling is less than or equal to 2/3 of the total length of the plate blank;
specifically, the method comprises the following steps: in the prior art, after a steel piling accident occurs in a coiling area, long strip steel 7 stays and is accumulated on a coiling conveying roller table 4, the strip steel cannot be respectively lifted out by a crown block due to overlong length and needs to be unloaded from a coil unloading trolley 5 used in a new coiling machine, but the strip steel 7 per se at the moment usually has certain folds, gaps exist among layers after the strip steel is recoiled, the coiled strip steel can be flatly coiled and is difficult to unload from the coiling machine, and the diameter of the coil steel is larger than that of a coiling machine frame 8, so the strip steel 7 needs to be cut and recoiled into other coiling machines, and the accident recovery time is delayed. Before the implementation of the embodiment, the head of the strip steel 7 needs to be coiled into a coiler, and then the length of the strip steel 7 is judged, and when the total length of the strip steel 7 is too short, the process does not need to be implemented; if the total length of the strip steel 7 is too long, the process is implemented. Specifically, when the head of the strip steel 7 breaks down and stops after being wound into the coiler, the length of the strip steel 7 is longer; when the head of the strip steel 7 does not enter the coiling machine, the fault is stopped, and if the head of the strip steel 7 reaches the cold outlet part when the fault is stopped, the length of the strip steel 7 is longer; or judging the length of the residual plate blank which is not rolled in the finish rolling, wherein the total length of the residual plate blank in the finish rolling is less than or equal to 2/3 of the total length of the plate blank, and judging the overlong length of the strip steel 7 on the layer cooling roller way 43.
And 2, step: before coiling, the second coiling-aid roller 22 and the third coiling-aid roller 23 are opened to the maximum, the first coiling-aid roller 21 is closed to the position of a steel coil in the coiling machine, and meanwhile, the side guide plate 3 is closed to clamp the strip steel 7 to be slightly bulged;
further, the first wrapper roll 21 is closed to the steel coil position in the coiling machine, so that the first wrapper roll 21 is in contact with the strip steel 7, the first wrapper roll 21 does not generate pressure, and the action speed of the first wrapper roll 21 is 40-60 mm/s;
specifically, before coiling, the second wrapper roller 22 and the third wrapper roller 23 are opened to the maximum, the first wrapper roller 21 is closed to be in contact with the steel coil on the winding drum 1, and the first wrapper roller 21 does not generate pressure. In the process of coiling the strip steel 7, because the cold coiled strip steel 7 has wrinkles or unevenness, if the coil of steel is pressed by the auxiliary winding roller during coiling in order to prevent uncoiling, the strip steel 7 deviates during coiling instead, and as a result, the coil diameter of one side of the coiled steel is larger and the coil diameter of the other side is smaller, so that the first auxiliary winding roller 21 is closed to be in contact with the coil of steel on the winding drum 1, the first auxiliary winding roller 21 does not generate pressure, the first auxiliary winding roller 21 and the winding drum 1 rotate together during coiling, and the first auxiliary winding roller 21 plays a role in guiding and stabilizing coiling on the coiled strip steel 7. In the embodiment, the action speed of the first wrapper roller 21 is 40-60 mm/s;
further, closing the side guide plates 3 to clamp the strip steel 7 to be slightly bulged, and enabling the opening degree of the side guide plates 3 to be 1-5mm smaller than the actual width of the strip steel 7;
specifically, before coiling, the front side guide plate 3 of the coiling machine is closed to clamp the edge of the strip steel 7 to be slightly bulged, a certain tension is formed between the winding drum 1 and the side guide plate 3 during coiling, and in specific implementation, the actual width of the strip steel 7 displayed by the width gauge can be referred to, and the side guide plate 3 is closed to be 1-5mm smaller than the actual width of the strip steel 7.
And 3, step 3: the coiling drum 1 of the coiler is rotated forwards, and the conveying roller table 4 is rotated backwards at the same time until the coiling of the strip steel 7 is finished;
further, the rotating speed of the winding drum 1 is 1.5-2.5 m/s, and the reverse rotating speed of the conveying roller table 4 is 0.5-1 m/s;
further, before the coiling machine coils the strip steel 7, leveling the strip steel 7 on the transport roller table 4 at least 5 meters in front of the side guide plate 3;
specifically, during coiling, the upper pinch roll 61 is closed to about 60mm and rotates at the same speed as the winding drum 1, the rotating speed of the winding drum 1 is 1.5-2.5 m/s, generally, in order to finish the coiling of the strip steel 7 more quickly, the higher speed is used, such as 3m/s and 4m/s, the speed is too high, a certain amount of fold bending exists in the cold strip steel 7, the coiling machine is unstable and shakes during coiling, and the whole steel coil is uncoiled and flatly coiled after the coiling is finished, so that in the embodiment, the rotating speed of the winding drum 1 is 1.5-2.5 m/s; meanwhile, a large amount of bending of the strip steel 7 on the transport roller way 4 occurs during coiling, and when the strip steel is coiled into the coiling machine, a part of bending of the strip steel can be coiled into the coiling machine together to cause uncoiling, so that in the embodiment, the coiling drum 1 is rotated, the front transport roller way 42 of the side guide plate of the coiling machine is rotated in the reverse direction, the strip steel 7 is ensured to be straight without sleeve before entering the side guide plate 3, meanwhile, micro-tension can be generated among the reversed transport roller way 4, the side guide plate 3 and the coiling drum 1, and in addition, the transport roller way 41 at the side guide plate does not rotate in order to protect the roller surface of the transport roller way 41 at the side guide plate; in the embodiment, the reversing speed of the front transport roller way 42 of the side guide plate is 0.5-1 m/s, the transport roller way 4 is damaged due to slipping when the reversing is too fast, and the straightness of the strip steel 7 before entering the side guide plate 3 cannot be guaranteed due to too slow reversing;
further, before the coiling machine coils the strip steel 7, leveling the strip steel 7 on the front transport roller way 42 of the side guide plate at least 5 meters in front of the side guide plate 3;
further, in the process of coiling the strip steel 7, judging whether the strip steel 7 is bent or not and whether the possibility of generating coil loosening in the coiling machine exists or not; when the steel coil in the coiling machine is likely to be loosened due to bending, controlling the roll gap between the upper pinch roll 61 and the lower pinch roll 62 to be 15-50mm, and feeding the bent strip steel 7 into the coiling machine; controlling the bent strip steel 7 to reach the position below the pressing roller 63, and controlling the pressing roller 63 to descend to eliminate bending;
specifically, in the process of coiling the strip steel 7, due to the difference of the type and the thickness of the strip steel 7, the strip steel 7 can be bent to a certain extent, and the strip steel 7 in the coiling machine is uncoiled after entering the coiling machine, in the embodiment, when the bending height of the strip steel 7 exceeds the height of the side guide plate 3, the possibility that the steel coil in the coiling machine is uncoiled due to bending is judged, the upper pinch roll 61 is lowered to 15-50mm roll gap to eliminate bending, and the upper pinch roll 61 is lifted up again after being fed into the coiling machine; the bending can be controlled to reach the position below the pressing roller 63, and the pressing roller 63 is controlled to descend to eliminate the bending;
further, when the strip steel 7 is coiled until the tail part of the strip steel 7 reaches the front of the coiling machine, the reel 1 stops rotating, and the coil stripping trolley 5 is controlled to ascend to contact with a steel coil in the coiling machine and not to generate pressure; the winding drum 1 is rotated to complete the coil stripping at one time at the tail part of the strip steel 7;
in the prior art, the coiling and uncoiling trolley 5 does not display the pressure after contacting the steel coil, and only the coiling pressure reaches a signal, but the pressure is larger; in the embodiment, when the tail part of the strip steel 7 reaches the front of the coiling machine, the coil unloading trolley 5 is controlled to be in contact with the steel coil but not to tightly press the steel coil, so that the deviation of the strip steel 7 when the strip steel is coiled into the coiling machine is avoided; similarly, the winding drum 1 is rotated to ensure that the tail part of the strip steel 7 is fixed to a proper position for coil unloading at one time, so that the phenomenon that the outer ring of the steel coil deviates due to the fact that the steel coil rotates and fixes the tail in the coiling machine for multiple times is avoided;
in a preferred embodiment of the invention, the thickness of the strip steel 7 is less than or equal to 6.0mm.
The invention can safely and quickly coil the strip steel 7 on the conveying roller way 4, not only saves time, but also improves efficiency, and avoids the phenomenon that the production time is influenced because the coiled steel coil is too large in coil diameter and can not be unloaded due to coil loosening; according to the invention, all the strip steel 7 on the transport roller table 4 can be coiled by only one coiling machine; the invention can quickly process the accident by utilizing the inherent equipment of the production field without additionally adding equipment and modifying programs.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.
The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. A method for coiling strip steel is characterized by being applied to a hot rolling production line, wherein the hot rolling production line is sequentially provided with a finishing mill, a transport roller way, a coiling machine and an uncoiling trolley according to the running direction, the transport roller way comprises a side guide plate front transport roller way, a side guide plate position transport roller way and a layer cooling roller way, and one end of the layer cooling roller way is provided with a layer cooling outlet;
the coiler sequentially comprises a side guide plate, a pinch roll, an upper pinch roll, a lower pinch roll, a first wrapper roll, a second wrapper roll, a third wrapper roll and a winding drum according to the running direction of a hot rolling production line, wherein a roll gap is formed between the upper pinch roll and the lower pinch roll;
the method comprises the following steps:
step 1: if the head of the strip steel enters the coiling machine, executing the step 2; if the head of the strip steel does not enter the coiling machine, manually coiling the head of the strip steel into the coiling machine, judging the length of the strip steel on a layer cooling roller way, and if the length of the strip steel is too long, executing the step 2;
step 2: before coiling, the second coiling-aid roller and the third coiling-aid roller are opened to the maximum, the first coiling-aid roller is closed to the position of a steel coil in the coiling machine, and meanwhile, the side guide plate is closed to clamp the strip steel to a micro bulge;
and step 3: and rotating the coiling drum of the coiler forward and rotating the conveying roller way reversely at the same time until the strip steel is coiled.
2. The method for coiling the strip steel as claimed in claim 1, wherein the length of the strip steel on the laminar cooling roller way is judged to be too long according to the head position of the strip steel, and when the head of the strip steel reaches a laminar cooling outlet, the length of the strip steel on the laminar cooling roller way is judged to be too long; and judging whether the length of the strip steel on the layer cooling roller way is too long or not according to the length of the finish rolling residual plate blank of the finish rolling machine, and judging that the length of the strip steel on the layer cooling roller way is too long when the length of the finish rolling residual plate blank is less than or equal to 2/3 of the total length of the plate blank.
3. The method of claim 1, wherein the strip on the transport table at least 5 meters before the side guides is pulled flat by the coiler before the strip is coiled.
4. The method of claim 1, wherein the first wrapper roller is turned off to the steel coil in the coiler so that the first wrapper roller contacts the strip steel, and the first wrapper roller generates no pressure, and the operating speed of the first wrapper roller is 40-60 mm/s.
5. A method of coiling strip steel as claimed in claim 1, characterised in that the side guides are closed to clamp the strip steel to the micro-bulging so that the side guides are open to less than 1-5mm of the actual width of the strip steel.
6. The method for coiling the strip steel as claimed in claim 1, wherein the coiling drum of the coiler is rotated forward and the conveying roller way is rotated backward simultaneously until the coiling of the strip steel is completed, wherein the rotating speed of the coiling drum is 1.5-2.5 m/s, and the rotating speed of the conveying roller way is 0.5-1 m/s.
7. The method for coiling the strip steel as claimed in claim 1, wherein when the strip steel is coiled until the tail part of the strip steel reaches the coiling machine, the reel stops rotating, and the coil stripping trolley is controlled to ascend to contact with a steel coil in the coiling machine and generate no pressure; and rotating the winding drum to enable the tail part of the strip steel to complete coil stripping at one time.
8. The method for coiling the strip steel as claimed in claim 1, wherein in the process of coiling the strip steel, the bending of the strip steel is judged, and whether the possibility of generating the coil loosening in a coiling machine exists or not is judged; when the steel coil in the coiling machine is likely to be loosened due to the bending, controlling the roll gap between the upper pinch roll and the lower pinch roll to be 15-50mm, and feeding the bent strip steel into the coiling machine; and controlling the bent strip steel to reach the position below the pressing roller, and controlling the pressing roller to descend to eliminate bending.
9. A method of coiling strip as defined in claim 1, characterised in that the thickness of the strip is less than or equal to 6.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210925513.8A CN115254967A (en) | 2022-08-03 | 2022-08-03 | Strip steel coiling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210925513.8A CN115254967A (en) | 2022-08-03 | 2022-08-03 | Strip steel coiling method |
Publications (1)
| Publication Number | Publication Date |
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| CN115254967A true CN115254967A (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210925513.8A Pending CN115254967A (en) | 2022-08-03 | 2022-08-03 | Strip steel coiling method |
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| CN (1) | CN115254967A (en) |
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- 2022-08-03 CN CN202210925513.8A patent/CN115254967A/en active Pending
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