CN110624959B - Leveling method for improving side bending defect of hot-rolled high-strength strip steel - Google Patents
Leveling method for improving side bending defect of hot-rolled high-strength strip steel Download PDFInfo
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- CN110624959B CN110624959B CN201910944707.0A CN201910944707A CN110624959B CN 110624959 B CN110624959 B CN 110624959B CN 201910944707 A CN201910944707 A CN 201910944707A CN 110624959 B CN110624959 B CN 110624959B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
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Abstract
The application discloses a flattening method for improving the side bending defect of hot-rolled high-strength strip steel, which comprises the following steps: step S1: acquiring high-strength strip steel, and setting end point values of a flattening rolling force and a roll bending force; step S2: rolling the strip steel by adopting a CVC roller shape and a micro edge wave control mode; step S3: and adjusting the magnitude of the roll bending force in real time according to the edge wave degree of the strip steel. According to the leveling method, the CVC roller type is adopted, and a micro edge wave control mode is utilized, so that the strip steel presents micro edge waves after rolling is completed, the distribution of residual stress in the strip steel is improved and balanced, and the problem that the lateral bending of the high-strength steel after longitudinal shearing and roll forming exceeds the standard is effectively solved.
Description
Technical Field
The application relates to the field of ferrous metallurgy rolling, in particular to a flattening method for improving the side bending defect of hot-rolled high-strength strip steel.
Background
The P700L high-strength steel for automobile structures is mainly used for manufacturing longitudinal beams of heavy-duty automobiles, and the steel cannot meet the use requirements of users as shown in figure 1, because the inside residual stress of the steel is unevenly released in the rolling, cooling and finishing cold processing processes, so that the lateral bending of the steel after longitudinal shearing and roll forming exceeds the standard.
In the prior art, after the influence factors such as the components of the strip steel, the heating process, the rolling process, the cooling process, the slow cooling process, the leveling process and the like are optimized and improved, the long beam after rolling still cannot meet the user standard that the camber is less than or equal to 5mm, so that the product delivery is difficult, the rolling forming qualification rate can only reach 50%, and the subsequent variety development of the high-strength strip steel is hindered.
In order to solve the problems, an ultra-fast cooling process of a rolling line is generally adopted, or straightening equipment for multiple rollers in the whole process is added, the two technologies relate to newly added investment, the reconstruction time is long, the cost is high, and the actual difficulty cannot be solved at present.
Therefore, how to effectively reduce the problem that the lateral bending of the steel for the high-strength automobile structure exceeds the standard is a technical problem which needs to be solved by the technical personnel in the field at present.
Disclosure of Invention
The application aims to provide a leveling method for improving the side bending defect of hot-rolled high-strength strip steel, the side bending problem of the strip steel can be effectively reduced through micro edge wave control, the product quality is improved, and the user requirements are met.
In order to achieve the above purpose, the present application provides the following technical solutions:
a flattening method for improving the side bending defect of hot-rolled high-strength strip steel comprises the following steps:
step S1: acquiring high-strength strip steel, and setting end point values of a flattening rolling force and a roll bending force;
step S2: rolling the strip steel by adopting a CVC roller shape and a micro edge wave control mode;
step S3: and adjusting the magnitude of the roll bending force in real time according to the edge wave degree of the strip steel.
Preferably, the roll bending force end point value is-300 KN to-600 KN.
Preferably, the temper rolling force is 2000 to 5000 KN.
Preferably, the method further comprises the following steps:
and setting the convexity of the CVC roller form to be a negative value, and keeping the negative convexity of the CVC roller form unchanged when the strip steel is subjected to temper rolling.
Preferably, the method further comprises the following steps: the thickness of the strip steel is 1.2 to 12.7 mm.
Preferably, the drive-side rolling force is adjusted to be 20 to 150KN greater than the operating-side rolling force at the start of the strip temper rolling.
Preferably, the convexity of the CVC roll shape is-0.12 to +0.04 mm.
Preferably, when the roll shifting position is: the convexity of the roller is from-0.118 to-0.122 mm when the upper roller is from +145 to +155mm and the lower roller is from-145 to-155 mm;
when the roll shifting position is: the convexity of the roller is from-0.104 to-0.108 mm when the upper roller is from +120 to +130mm and the lower roller is from-120 to-130 mm;
when the roll shifting position is: the convexity of the roller is from-0.104 to-0.108 mm when the upper roller is from +95 to +105mm and the lower roller is from-95 to-105 mm;
when the roll shifting position is: the convexity of the roller is-0.091-0.095 mm when the upper roller is 120-130 mm and the lower roller is-120-130 mm;
when the roll shifting position is: the convexity of the roller is from-0.078 to-0.082 mm when the upper roller is from +70 to +80mm and the lower roller is from-70 to-80 mm;
when the roll shifting position is: the convexity of the roller is from-0.064 to-0.068 mm when the upper roller is from +45 to +55mm and the lower roller is from-45 to-55 mm;
when the roll shifting position is: the convexity of the roller is-0.051 to-0.055 mm when the upper roller is 20 to +30mm and the lower roller is-20 to-30 mm;
when the roll shifting position is: when the upper roller is 0mm and the lower roller is 0mm, the roller shape convexity is from-0.038 to-0.042 mm;
when the roll shifting position is: the roller shape convexity is from-0.024 to-0.028 mm when the upper roller is from-20 to-30 mm and the lower roller is from +20 to +30 mm;
when the roll shifting position is: the convexity of the roller is from-0.011 to-0.015 mm when the upper roller is from-45 mm to-55 mm and the convexity of the roller is from +45 mm to +55mm when the lower roller is from +45 mm to +55 mm;
when the roll shifting position is: the convexity of the roller is 0 when the upper roller is 70-80 mm and the lower roller is 70-80 mm.
The leveling method for improving the side bending defect of the hot-rolled high-strength strip steel comprises the following steps: step S1: acquiring high-strength strip steel, and setting end point values of a flattening rolling force and a roll bending force; step S2: rolling the strip steel by adopting a CVC roller shape and a micro edge wave control mode; step S3: and adjusting the magnitude of the roll bending force in real time according to the edge wave degree of the strip steel. According to the leveling method, the CVC roller type is adopted, and a micro edge wave control mode is utilized, so that the strip steel presents micro edge waves after rolling is completed, the distribution of residual stress in the strip steel is improved and balanced, and the problem that the lateral bending of the high-strength steel after longitudinal shearing and roll forming exceeds the standard is effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic side-bending diagram of a high-strength strip steel in the prior art;
FIG. 2 is a schematic side bending view of a hot-rolled high-strength strip rolled by the leveling method for improving the side bending defect of the hot-rolled high-strength strip;
FIG. 3 is a schematic view of a negative crown roll profile for a leveling work roll as provided herein;
FIG. 4 is a schematic illustration of the roll profile crown of a flat work roll for different roll shifting positions as provided herein;
FIG. 5 is a flowchart of one embodiment of the leveling method for improving the side bending defect of the hot-rolled high-strength strip steel provided by the present application;
wherein: a strip steel 1.
Detailed Description
The core of the application is to provide a leveling method for improving the side bending defect of the hot-rolled high-strength strip steel, so that the side bending problem of the strip steel can be effectively reduced, and the product quality is improved.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
Referring to fig. 2 to 5, fig. 2 is a schematic side bending view of a hot rolled high strength strip rolled by the leveling method for improving the side bending defect of the hot rolled high strength strip; FIG. 3 is a schematic view of a negative crown roll profile for a leveling work roll as provided herein; FIG. 4 is a schematic illustration of the roll profile crown of a flat work roll for different roll shifting positions as provided herein; FIG. 5 is a flowchart of an embodiment of the leveling method for improving the side bending defect of the hot-rolled high-strength strip steel.
In the embodiment, the leveling method for improving the side bending defect of the hot-rolled high-strength strip steel comprises the following steps:
step S1: acquiring a strip steel 1, and setting the end point values of a temper rolling force and a roll bending force, wherein the strip steel 1 is preferably high-strength steel for a P700 automobile;
step S2: rolling the strip steel 1 by adopting a CVC roller shape and a micro-edge wave control mode, wherein the CVC roller shape is a roller type with continuously variable convexity, and the prior art can be referred to specifically;
step S3: the method comprises the steps of adjusting the magnitude of the bending force in real time according to the edge wave degree of the strip steel 1, specifically, when the edge wave degree of the strip steel 1 is large, correspondingly adjusting the value of the bending force from a negative value to a positive value, and specifically, adjusting the value in a manual observation mode.
On the basis of the above embodiments, the bending roll force end point value is-300 KN to-600 KN.
In addition to the above embodiments, the temper rolling force is 2000 to 5000 KN.
Specifically, in the flattening method, the flattening rolling force is fixed to be 2000-5000 KN, the preset bending roll force end point value is-300-600 KN, meanwhile, according to the change of the full-length plate profile convexity and the wedge shape of the strip steel 1, the use of the bending roll force is changed from the bending roll force end point value, namely, the transition is carried out from the negative bending to the positive bending, the flattened plate profile can be always ensured not to have middle waves, slight edge waves can exist, and the improved lateral bending is obviously improved during the longitudinal shearing of the P700 high-strength steel.
In addition to the above embodiments, the method further includes:
the convexity of the CVC roll profile is set to be a negative value, and the negative convexity of the CVC roll profile is kept unchanged when the strip steel 1 is subjected to temper rolling. Specifically, when P700 high-strength steel is leveled, the roll profile of a working roll adopts negative convexity, the roll profile is preset and relatively fixed before leveling, an upper roll is positioned at the operating side by +150mm, a lower roll is positioned at the transmission side by-150 mm, the middle wave of the strip steel 1 is controlled mainly by the negative roll bending force, the extension of two sides of the strip steel 1 is enlarged as much as possible, and the distribution of residual stress in the strip steel 1 is improved and balanced. Meanwhile, the roll shifting position of the working roll can be properly adjusted according to the plate type change of the flattened strip steel 1 and the use of the roll bending force, so that the flattened strip steel 1 is ensured to have slight edge waves.
In addition to the above embodiments, the method further includes:
when the temper rolling of the strip 1 is started, the rolling force on the transmission side is adjusted to be 20 to 150KN greater than the rolling force on the operation side. Specifically, the side bending of the transmission side strip is 2-5 mm larger than that of the operation side strip, the rejection rate of the material after roll forming is the highest, and in the leveling operation, in order to prevent the deviation of the strip steel 1, the rolling force of the operation side is 200KN larger than that of the transmission side, aiming at the problem of the strip side bending difference, an operation control mode of finely adjusting the rolling force difference is adopted by combining with the poor leveling rolling force control principle.
Further, when the strip steel 1 is flatly started, the rolling force difference is adjusted through manual intervention, so that the rolling force of the transmission side is 20-150KN greater than that of the operation side, the flat rear plate shape is observed visually, and the strip steel 1 has no obvious edge wave and only has slight edge wave; when the strip steel 1 has obvious edge waves, the plate shape is controlled by adjusting the negative bending roll force, the rolling force difference is kept from being adjusted, and serious single edge waves caused by frequent adjustment of the rolling force difference at two sides and even sickle bends caused by deviation of the strip steel 1 are avoided.
And, the control principle of the temper rolling force difference is as follows: drive side rolling force-operating side rolling force;
when the HMI display frame value is a positive value, the rolling force of the transmission side is larger than that of the operation side;
when the HMI display picture numerical value is-value, the rolling force of the operation side is larger than that of the transmission side.
In addition to the above embodiments, the thickness of the strip 1 is 1.2 to 12.7 mm.
On the basis of the above embodiments, the convexity of the CVC roller form is-0.12 to +0.04 mm. Specifically, through carrying out an on-line residual stress test on the P700L, the data analysis shows that the reason for causing the P700L lateral bending is that the strip steel 1 tends to be medium wave, and the reason for the strip steel 1 to be medium wave is that the edge part of the strip steel 1 is fast in cooling speed and low in temperature in the cooling process after rolling, and medium wave needs to be strictly controlled during leveling control. The original roll shape of the leveling working roll is further optimized by combining the roll shifting function of the existing leveling machine, the roll shape is improved into a CVC roll shape, the online change of the roll shape convexity of the working roll is realized, and the roll shape convexity can be adjusted and transited to be switched from +0.04mm to-0.12 mm according to the wave shape distribution of the raw materials.
As shown in fig. 4, the shifting of the CVC work roll is up-down staggered shifting, the upper roll shifts to the transmission side, and the lower roll shifts to the operation side at the same time in the positive direction (the work roll equivalent convexity is a positive convexity); on the contrary, the upper roller moves towards the operation side, and the lower roller moves towards the transmission side in a negative direction (the equivalent convexity of the working roller is a negative convexity). Of course, since the grinding rolls are arranged differently, the site arrangement may be reversed from that described above and is not limited to the manner given in this embodiment.
Preferably, when the roll shifting position is: the convexity of the roller is from-0.118 to-0.122 mm when the upper roller is from +145 to +155mm and the lower roller is from-145 to-155 mm;
when the roll shifting position is: the convexity of the roller is from-0.104 to-0.108 mm when the upper roller is from +120 to +130mm and the lower roller is from-120 to-130 mm;
when the roll shifting position is: the convexity of the roller is from-0.104 to-0.108 mm when the upper roller is from +95 to +105mm and the lower roller is from-95 to-105 mm;
when the roll shifting position is: the convexity of the roller is-0.091-0.095 mm when the upper roller is 120-130 mm and the lower roller is-120-130 mm;
when the roll shifting position is: the convexity of the roller is from-0.078 to-0.082 mm when the upper roller is from +70 to +80mm and the lower roller is from-70 to-80 mm;
when the roll shifting position is: the convexity of the roller is from-0.064 to-0.068 mm when the upper roller is from +45 to +55mm and the lower roller is from-45 to-55 mm;
when the roll shifting position is: the convexity of the roller is-0.051 to-0.055 mm when the upper roller is 20 to +30mm and the lower roller is-20 to-30 mm;
when the roll shifting position is: when the upper roller is 0mm and the lower roller is 0mm, the roller shape convexity is from-0.038 to-0.042 mm;
when the roll shifting position is: the roller shape convexity is from-0.024 to-0.028 mm when the upper roller is from-20 to-30 mm and the lower roller is from +20 to +30 mm;
when the roll shifting position is: the convexity of the roller is from-0.011 to-0.015 mm when the upper roller is from-45 mm to-55 mm and the convexity of the roller is from +45 mm to +55mm when the lower roller is from +45 mm to +55 mm;
when the roll shifting position is: the convexity of the roller is 0 when the upper roller is 70-80 mm and the lower roller is 70-80 mm.
More preferably, the roll profile crown corresponding to the work roll cross-over position is as shown in table 1.
TABLE 1 roller profile convexity meter corresponding to the position of the working roller shifting
| Position of roll shifting mm | Convexity mm of corresponding roller |
| Upper roller +150 mm/lower roller-150 mm | -0.120 |
| Upper roll +125 mm/lower roll-125 mm | -0.106 |
| Upper roller +100 mm/lower roller-100 mm | -0.093 |
| Upper roller +750 mm/lower roller-75 mm | -0.080 |
| Upper roller +50 mm/lower roller-50 mm | -0.066 |
| Upper roller +25 mm/lower roller-25 mm | -0.053 |
| 0mm upper roll/0 mm lower roll | -0.040 |
| Upper roller-25 mm/lower roller +25mm | -0.026 |
| Upper roller of-50 mm/lower roller of +50mm | -0.013 |
| Upper roller of-75 mm/lower roller of + |
0 |
Specifically, by using the flattening method provided in this embodiment, the rolled side bend values of the edge of the strip 1 after flattening are shown in table 2.
TABLE 2 comparison table of rolling lateral bending values of the rear edge of the strip steel 1
The flattening method provided by the embodiment has no key equipment and advanced control technology, combines the characteristics of the existing equipment of the flattening machine set, effectively improves the technical problem that the side bending of the hot-rolled high-strength automobile steel P700L exceeds the standard by implementing the negative-convexity roll profile flattening technology by optimizing the flattening working roll profile, the micro-edge wave control technology by optimizing the adjustment of the flattening plate profile and the fine rolling force difference control technology by optimizing the distribution of the flattening reduction, and improves the rolling forming qualification rate from the previous 50 percent to 96 percent. The leveling method is originated by a domestic leveling unit, exceeds that the leveling unit can only level the strip steel 1 with the thickness of less than 6.35mm, realizes the full coverage of the leveling function on products with the thickness of 1.2-12.7 mm, and provides technical support for the variety development of high-strength automobile steel.
The leveling method for improving the side bending defect of the hot-rolled high-strength strip steel provided by the application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (4)
1. A flattening method for improving the side bending defect of hot-rolled high-strength strip steel is characterized by comprising the following steps:
step S1: acquiring a strip steel (1), and setting end point values of a temper rolling force and a roll bending force;
step S2: rolling the strip steel (1) by adopting a CVC roller shape and a micro edge wave control mode;
step S3: adjusting the magnitude of the roll bending force in real time according to the edge wave degree of the strip steel (1);
further comprising the steps of:
setting the convexity of the CVC roller form to be a negative value, and keeping the negative convexity of the CVC roller form unchanged when the strip steel (1) is subjected to temper rolling;
the thickness of the strip steel (1) is 1.2 mm-12.7 mm;
when the roll shifting position is: the convexity of the roller is from-0.118 to-0.122 mm when the upper roller is from +145 to +155mm and the lower roller is from-145 to-155 mm;
when the roll shifting position is: the convexity of the roller is from-0.104 to-0.108 mm when the upper roller is from +120 to +130mm and the lower roller is from-120 to-130 mm;
when the roll shifting position is: the convexity of the roller is from-0.078 to-0.082 mm when the upper roller is from +70 to +80mm and the lower roller is from-70 to-80 mm;
when the roll shifting position is: the convexity of the roller is from-0.064 to-0.068 mm when the upper roller is from +45 to +55mm and the lower roller is from-45 to-55 mm;
when the roll shifting position is: the convexity of the roller is-0.051 to-0.055 mm when the upper roller is 20 to +30mm and the lower roller is-20 to-30 mm;
when the roll shifting position is: when the upper roller is 0mm and the lower roller is 0mm, the roller shape convexity is from-0.038 to-0.042 mm;
when the roll shifting position is: the roller shape convexity is from-0.024 to-0.028 mm when the upper roller is from-20 to-30 mm and the lower roller is from +20 to +30 mm;
when the roll shifting position is: the convexity of the roller is from-0.011 to-0.015 mm when the upper roller is from-45 mm to-55 mm and the convexity of the roller is from +45 mm to +55mm when the lower roller is from +45 mm to +55 mm;
when the roll shifting position is: the convexity of the roller is 0 when the upper roller is 70-80 mm and the lower roller is 70-80 mm.
2. The temper rolling method for improving the hot rolled high strength strip steel side bend defect according to claim 1, wherein the roll bending force end point value is-300 KN to-600 KN.
3. The temper rolling method for improving the side bending defect of the hot-rolled high-strength steel strip according to claim 2, wherein the temper rolling force is 2000 to 5000 KN.
4. The temper rolling method for improving the side bending defect of the hot-rolled high-strength steel strip according to any one of claims 1 to 3, wherein the driving side rolling force is adjusted to be 20 to 150KN greater than the operating side rolling force at the start of the temper rolling of the steel strip (1).
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05146810A (en) * | 1991-11-29 | 1993-06-15 | Kawasaki Steel Corp | Edging rolling method for metal plate |
| JP2000176522A (en) * | 1998-12-18 | 2000-06-27 | Nkk Corp | Manufacture of steel sheet by camber control |
| CN102601127A (en) * | 2012-03-19 | 2012-07-25 | 中冶南方工程技术有限公司 | High-precision strip shape control prediction method for CVC (continuously variable crown) four-roll cold rolling mill |
| CN102861771A (en) * | 2012-09-29 | 2013-01-09 | 鞍钢股份有限公司 | Differential roll bending method of working roll and used for controlling nonsymmetrical flatness defects |
| CN105268747A (en) * | 2014-06-29 | 2016-01-27 | 上海梅山钢铁股份有限公司 | Hot rolled strip convexity on-line closed loop control method |
| CN107774709A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | A kind of smooth middle, high-carbon thin material method of hot rolling bundling line |
-
2019
- 2019-09-30 CN CN201910944707.0A patent/CN110624959B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05146810A (en) * | 1991-11-29 | 1993-06-15 | Kawasaki Steel Corp | Edging rolling method for metal plate |
| JP2000176522A (en) * | 1998-12-18 | 2000-06-27 | Nkk Corp | Manufacture of steel sheet by camber control |
| CN102601127A (en) * | 2012-03-19 | 2012-07-25 | 中冶南方工程技术有限公司 | High-precision strip shape control prediction method for CVC (continuously variable crown) four-roll cold rolling mill |
| CN102861771A (en) * | 2012-09-29 | 2013-01-09 | 鞍钢股份有限公司 | Differential roll bending method of working roll and used for controlling nonsymmetrical flatness defects |
| CN105268747A (en) * | 2014-06-29 | 2016-01-27 | 上海梅山钢铁股份有限公司 | Hot rolled strip convexity on-line closed loop control method |
| CN107774709A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | A kind of smooth middle, high-carbon thin material method of hot rolling bundling line |
Non-Patent Citations (8)
| Title |
|---|
| "Q235B系列钢的浪形控制与探讨";邓长河等;《武钢技术》;20130228;第51卷(第1期);第26页左栏第1行-29页右栏倒数第1行 * |
| "热轧带钢平整中的板形控制";王立旗等;《2006年河北省轧钢技术与学术年会论文集（上册）》;20060731;第39-40页 * |
| "热轧带钢平整的板形工艺控制分析";徐勤明等;《2003中国钢铁年会论文集》;20031031;第428-432页 * |
| "热轧平整机组的板形控制研究";张明生;《河北冶金》;20161031(第10期);第61-64页 * |
| "邯钢2250 热轧酸洗板折皱缺陷研究及改进";丁剑;《世界金属导报》;20160630;第1页第3节-第3页第6节 * |
| 丁剑."邯钢2250 热轧酸洗板折皱缺陷研究及改进".《世界金属导报》.2016,第1-7页. * |
| 武钢2250热轧平整机窜辊策略的研究;杨光辉等;《钢铁》;20091215;第44卷(第12期);第54-58页 * |
| 邓长河等."Q235B系列钢的浪形控制与探讨".《武钢技术》.2003,第26-29页. * |
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