CN113084101A - Device for measuring roll gap value of tension leveler and intelligent calibration method - Google Patents
Device for measuring roll gap value of tension leveler and intelligent calibration method Download PDFInfo
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- CN113084101A CN113084101A CN202110355370.7A CN202110355370A CN113084101A CN 113084101 A CN113084101 A CN 113084101A CN 202110355370 A CN202110355370 A CN 202110355370A CN 113084101 A CN113084101 A CN 113084101A
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- withdrawal
- roll gap
- straightening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
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- Mechanical Engineering (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention relates to a withdrawal and straightening machine, and discloses a withdrawal and straightening machine roll gap value measuring device and an intelligent calibration method.
Description
Technical Field
The invention relates to a tension leveler, in particular to a tension leveler roll gap value measuring device and an intelligent calibration method.
Background
In the practice of steel-making continuous casting production in the metallurgical industry, in order to realize the function of automatically controlling the dynamic soft reduction of a billet continuous casting machine, the roll gap value of a withdrawal straightening machine needs to be frequently measured and calibrated, the measurement and calibration are finished manually at present, a vernier caliper or a micrometer is used for directly or indirectly measuring data, then the measured data are manually input into an automatic control system under the dynamic soft reduction through a control panel, and the automatic control system under the dynamic soft reduction calibrates the roll gap value of the withdrawal straightening machine according to the measured data, but the method adopting manual measurement has two problems:
1. the measurement precision is low, most of manual measurement methods adopt indirect measurement, namely, in the process of clamping and conveying the dummy bar by the pulling and straightening roller, the measurement error of each pulling and straightening roller gap is corrected by using the thickness of the dummy bar, the surface of the dummy bar is abraded in different degrees due to the friction between the dummy bar and the pulling and straightening roller, the thickness of the dummy bar is uneven, the measurement precision is influenced, the quality problem of continuous casting billets can be caused due to the excessively low measurement precision, such as the loosening of the interior of a continuous casting billet, the existence of cracks in the interior of the continuous casting billet and the like.
2. The method is time-consuming and labor-consuming, the time for manually completing the measurement and calibration of the pulling and straightening roller in one casting flow is 4-6 hours, and the labor intensity is high.
Disclosure of Invention
The technical problems solved by the invention are as follows: the invention provides a measuring device for a roll gap value of a tension leveler and an intelligent calibration method, which solve the problems of low precision and time and labor waste of manual measurement of the roll gap value and further solve the problems of time and labor waste of manual calibration of the roll gap value of the tension leveler.
The invention adopts the technical scheme for solving the technical problems that: the invention discloses a roll gap value measuring device of a withdrawal and straightening machine, which is arranged in a chain link of a dummy bar and comprises an upper measuring head, a lower measuring head and an encoder; the upper measuring head and the lower measuring head can be pressed by the tension and straightening roller after the dummy bar is fed into the tension and straightening machine, so that the relative position between the upper measuring head and the lower measuring head is changed, and the encoder is used for calculating the roll gap measuring value of the tension and straightening machine according to the relative position change.
Furthermore, when the measuring device of the withdrawal and straightening machine does not measure, the vertex of the upper measuring head is higher than the upper surface of the dummy bar, the vertex of the lower measuring head is lower than the lower surface of the dummy bar, and the encoder is used for calculating the distance between the contact point of the upper measuring head and the withdrawal and straightening roller and the contact point of the lower measuring head and the withdrawal and straightening roller according to the relative position change, wherein the distance is the measured value of the roll gap of the withdrawal and straightening machine.
Further, when the measuring device of the withdrawal and straightening machine is not used for measuring, the vertex of the upper measuring head is higher than the upper surface of the dummy bar, the vertex of the lower measuring head is higher than the lower surface H1 of the dummy bar, the upper measuring head is pressed by the withdrawal and straightening roller after the dummy bar is sent into the withdrawal and straightening machine, so that the relative position between the upper measuring head and the lower measuring head is changed, the encoder is used for calculating the distance between the contact point of the upper measuring head and the withdrawal and straightening roller and the vertex of the lower measuring head according to the relative position change, and the sum of the distance and the distance H1 is the roll gap measurement value of the withdrawal and straightening machine.
Furthermore, the contact surface of the upper measuring head and the withdrawal and straightening roller and the contact surface of the lower measuring head and the withdrawal and straightening roller of the measuring device are both cambered surfaces.
Further, the measuring device also comprises a wireless communication module, and the wireless communication module is used for transmitting the measured value of the roll gap of the tension leveler.
Furthermore, the roll gap value measuring devices of the withdrawal and straightening unit are arranged at the hollow positions of a plurality of chain links of the dummy bar.
Further, the intelligent calibration method for the roll gap value of the withdrawal and straightening machine for square billet continuous casting comprises the following steps:
s01, feeding the dummy bar into a withdrawal and straightening machine;
s02, starting the withdrawal and straightening machine to press a withdrawal and straightening rod on the dummy bar;
s03, pulling a dummy bar, and recording measurement values by a measuring device in the process that a straightening and withdrawal rod is pressed on an upper measuring head and a lower measuring head, wherein the minimum value of the measurement values is a roll gap measurement value;
s04, measuring all the pulling and straightening rollers to obtain roll gap measured values of all the pulling and straightening rollers;
and S05, the automatic control system compares the roll gap measured value with the roll gap set value, and if the difference between the measured value and the set value is larger than the preset value, the roll gap set value is calibrated again to be the measured value.
Further, the intelligent calibration method for the roll gap value of the withdrawal and straightening machine for square billet continuous casting comprises the following steps:
s11, feeding the dummy bar into a withdrawal and straightening machine;
s12, starting the withdrawal and straightening machine to press a withdrawal and straightening rod on the dummy bar;
s13, pulling a dummy bar, and recording a measured value by a measuring device in the process that a straightening and withdrawal stick is pressed on an upper measuring head, wherein the sum of the minimum value of the measured value and a fixed value H1 is a roll gap measured value;
s14, measuring all the pulling and straightening rollers to obtain roll gap measured values of all the pulling and straightening rollers;
and S15, the automatic control system compares the roll gap measured value with the roll gap set value, and if the difference between the measured value and the set value is larger than the preset value, the roll gap set value is calibrated again to be the measured value.
The invention has the beneficial effects that: the measuring device is arranged in the dummy bar, the tension leveler is pressed on the measuring device by the tension leveler, the roll gap value of the tension leveler is accurately measured, the problems that the precision of manually measuring the roll gap value is low, time and labor are wasted are solved, furthermore, an automatic control system finishes the calibration of the roll gap value of the tension leveler according to the measured value, and the problems that the time and the labor are wasted when the roll gap value of the tension leveler is manually calibrated are solved. Compared with the prior art, the invention has the advantages of more accurate measurement result, labor saving, time saving and production efficiency improvement.
Drawings
FIG. 1 is a schematic view of a measuring device in an embodiment of the roll gap value measuring device and the intelligent calibration method of the tension leveler.
FIG. 2 is a schematic view of a measuring device in an embodiment of the roll gap value measuring device and the intelligent calibration method of the tension leveler during measurement.
Detailed Description
The invention discloses a roll gap value measuring device of a withdrawal and straightening machine, which is arranged in a chain link of a dummy bar and comprises an upper measuring head, a lower measuring head and an encoder; the upper measuring head and the lower measuring head can be pressed by the tension and straightening roller after the dummy bar is fed into the tension and straightening machine, so that the relative position between the upper measuring head and the lower measuring head is changed, and the encoder is used for calculating the roll gap measuring value of the tension and straightening machine according to the relative position change.
Furthermore, when the measuring device of the withdrawal and straightening machine does not measure, the vertex of the upper measuring head is higher than the upper surface of the dummy bar, the vertex of the lower measuring head is lower than the lower surface of the dummy bar, and the encoder is used for calculating the distance between the contact point of the upper measuring head and the withdrawal and straightening roller and the contact point of the lower measuring head and the withdrawal and straightening roller according to the relative position change, wherein the distance is the measured value of the roll gap of the withdrawal and straightening machine.
Further, when the measuring device of the withdrawal and straightening machine is not used for measuring, the vertex of the upper measuring head is higher than the upper surface of the dummy bar, the vertex of the lower measuring head is higher than the lower surface H1 of the dummy bar, the upper measuring head is pressed by the withdrawal and straightening roller after the dummy bar is sent into the withdrawal and straightening machine, so that the relative position between the upper measuring head and the lower measuring head is changed, the encoder is used for calculating the distance between the contact point of the upper measuring head and the withdrawal and straightening roller and the vertex of the lower measuring head according to the relative position change, and the sum of the distance and the distance H1 is the roll gap measurement value of the withdrawal and straightening machine.
Furthermore, the contact surface of the upper measuring head and the withdrawal and straightening roller and the contact surface of the lower measuring head and the withdrawal and straightening roller of the measuring device are both cambered surfaces, and when the upper detecting head and the lower detecting head are in contact, the cambered surfaces can reduce resistance.
Further, the measuring device also comprises a wireless communication module, and the wireless communication module is used for transmitting the measured value of the roll gap of the tension leveler.
Furthermore, the roll gap value measuring devices of the withdrawal and straightening unit are arranged at the hollow positions of a plurality of chain links of the dummy bar.
Further, the intelligent calibration method for the roll gap value of the withdrawal and straightening machine for square billet continuous casting comprises the following steps:
s01, feeding the dummy bar into a withdrawal and straightening machine;
s02, starting the withdrawal and straightening machine to press a withdrawal and straightening rod on the dummy bar;
s03, pulling a dummy bar, and recording measurement values by a measuring device in the process that a straightening and withdrawal rod is pressed on an upper measuring head and a lower measuring head, wherein the minimum value of the measurement values is a roll gap measurement value;
s04, measuring all the pulling and straightening rollers to obtain roll gap measured values of all the pulling and straightening rollers;
and S05, the automatic control system compares the roll gap measured value with the roll gap set value, and if the difference between the measured value and the set value is larger than the preset value, the roll gap set value is calibrated again to be the measured value.
Further, the intelligent calibration method for the roll gap value of the withdrawal and straightening machine for square billet continuous casting comprises the following steps:
s11, feeding the dummy bar into a withdrawal and straightening machine;
s12, starting the withdrawal and straightening machine to press a withdrawal and straightening rod on the dummy bar;
s13, pulling a dummy bar, and recording a measured value by a measuring device in the process that a straightening and withdrawal stick is pressed on an upper measuring head, wherein the sum of the minimum value of the measured value and a fixed value H1 is a roll gap measured value;
s14, measuring all the pulling and straightening rollers to obtain roll gap measured values of all the pulling and straightening rollers;
and S15, the automatic control system compares the roll gap measured value with the roll gap set value, and if the difference between the measured value and the set value is larger than the preset value, the roll gap set value is calibrated again to be the measured value.
The invention discloses an embodiment of a tension leveler roll gap value measuring device and an intelligent calibration method, which comprises the following steps:
the roll gap value measuring device 1 of the withdrawal and straightening machine is arranged in a chain link of a dummy bar as shown in figure 1 and comprises an upper measuring head 2, a lower measuring head 3, a wireless module and an encoder; the measuring device comprises an upper measuring head 2, a lower measuring head 3, a measuring device 1, an encoder, a tension leveler and a wireless module, wherein the upper measuring head 2 and the tension leveler are both cambered surfaces, when the measuring device 1 is not used for measuring, the top point of the upper measuring head 2 is higher than the upper surface of a dummy bar, the top point of the lower measuring head 3 is lower than the lower surface of the dummy bar, as shown in the attached drawing 2, the upper measuring head 2 and the lower measuring head 3 can be pressed by the tension leveler 4 after the dummy bar 5 is fed into the tension leveler, so that the relative position between the upper measuring head 2 and the lower measuring head 3 is changed, the encoder is used for calculating the distance between the contact point of the upper measuring head and the tension leveler and the contact point of the lower measuring head and the tension leveler according to the relative position change, the distance is the roll gap.
The method for intelligently calibrating the roll gap value measuring device 1 of the tension leveler comprises the following steps:
s01, feeding the dummy bar 5 into a withdrawal and straightening machine;
s02, starting the withdrawal and straightening machine to press the withdrawal and straightening rod 4 on the dummy bar 5;
s03, drawing the dummy bar 5, and recording measurement values by a measuring device in the process that the straightening and withdrawal rod 4 is pressed on the upper measuring head 2 and the lower measuring head 3, wherein the minimum value of the measurement values is a roll gap measurement value;
s04, measuring all the pulling and straightening rollers to obtain roll gap measured values of all the pulling and straightening rollers;
and S05, the automatic control system compares the roll gap measured value with the roll gap set value, and if the difference between the measured value and the set value is larger than the preset value, the roll gap set value is calibrated again to be the measured value.
The invention discloses another embodiment of a measuring device and an intelligent calibration method for a roll gap value of a withdrawal and straightening machine, which comprises the following steps:
the tension leveler roll gap value measuring device is arranged in a chain link of the dummy bar and comprises an upper measuring head, a lower measuring head, a wireless module and an encoder; the measuring device comprises an upper measuring head, a lower measuring head, a tension correcting machine, an encoder, a wireless module and a measuring device, wherein the upper measuring head and the tension correcting machine are both cambered surfaces, when the tension correcting machine measuring device does not measure, the top point of the upper measuring head is higher than the upper surface of a dummy bar, the top point of the lower measuring head is higher than the lower surface H1 of the dummy bar, the upper measuring head can be stressed by the tension correcting machine after the dummy bar is fed into the tension correcting machine, so that the relative position between the upper measuring head and the lower measuring head is changed, the encoder is used for calculating the distance between the contact point of the upper measuring head and the tension correcting machine and the top point of the lower measuring head according to the relative position change, the distance and the sum of H1 are tension correcting machine.
The method for intelligently calibrating the roll gap value measuring device of the tension leveler comprises the following steps:
s11, feeding the dummy bar into a withdrawal and straightening machine;
s12, starting the withdrawal and straightening machine to press a withdrawal and straightening rod on the dummy bar;
s13, pulling a dummy bar, and recording a measured value by a measuring device in the process that a straightening and withdrawal stick is pressed on an upper measuring head, wherein the sum of the minimum value of the measured value and a fixed value H1 is a roll gap measured value;
s14, measuring all the pulling and straightening rollers to obtain roll gap measured values of all the pulling and straightening rollers;
and S15, the automatic control system compares the roll gap measured value with the roll gap set value, and if the difference between the measured value and the set value is larger than the preset value, the roll gap set value is calibrated again to be the measured value.
Claims (8)
1. The roll gap value measuring device of the withdrawal and straightening machine is characterized by being arranged in a chain link of a dummy bar and comprising an upper measuring head, a lower measuring head and an encoder; the upper measuring head and the lower measuring head can be pressed by the tension and straightening roller after the dummy bar is fed into the tension and straightening machine, so that the relative position between the upper measuring head and the lower measuring head is changed, and the encoder is used for calculating the roll gap measuring value of the tension and straightening machine according to the relative position change.
2. The roll gap value measuring device of claim 1, wherein when the measuring device is not measuring, the vertex of the upper measuring head is higher than the upper surface of the dummy bar, and the vertex of the lower measuring head is lower than the lower surface of the dummy bar, and the encoder is configured to calculate the distance between the contact point of the upper measuring head and the withdrawal and straightening roll and the contact point of the lower measuring head and the withdrawal and straightening roll according to the relative position change, wherein the distance is the roll gap measurement value of the withdrawal and straightening machine.
3. The roll gap value measuring device of the withdrawal straightening machine as claimed in claim 1, wherein when the measuring device of the withdrawal straightening machine is not used for measurement, the top point of the upper measuring head is higher than the upper surface of the dummy bar, the top point of the lower measuring head is higher than the lower surface H1 of the dummy bar, the upper measuring head is pressed by the withdrawal straightening roll after the dummy bar is fed into the withdrawal straightening machine, so that the relative position between the upper measuring head and the lower measuring head is changed, and the encoder is used for calculating the distance between the contact point of the upper measuring head and the withdrawal straightening roll and the top point of the lower measuring head according to the relative position change, wherein the sum of the distance and the H1 is the roll gap measured value of the withdrawal straightening machine.
4. The roll gap value measuring device of the withdrawal and straightening machine according to claim 2 or 3, wherein the contact surface of the upper measuring head and the withdrawal and straightening roll and the contact surface of the lower measuring head and the withdrawal and straightening roll are both arc surfaces.
5. The roll gap value measuring device of the tension leveler as in claim 2 or 3, further comprising a wireless communication module for transmitting the roll gap measured value of the tension leveler.
6. The tension leveler roll gap value measuring device as claimed in claim 2 or 3, wherein the tension leveler roll gap value measuring device is installed at a hollow position of each of the plurality of links of the dummy bar.
7. The intelligent calibration method for the roll gap value of the withdrawal and straightening unit for the continuous casting of the square billets is applied to the roll gap value measuring device of the withdrawal and straightening unit as claimed in claim 2, and is characterized by comprising the following steps of:
s01, feeding the dummy bar into a withdrawal and straightening machine;
s02, starting the withdrawal and straightening machine to press a withdrawal and straightening rod on the dummy bar;
s03, pulling a dummy bar, and recording measurement values by a measuring device in the process that a straightening and withdrawal rod is pressed on an upper measuring head and a lower measuring head, wherein the minimum value of the measurement values is a roll gap measurement value;
s04, measuring all the pulling and straightening rollers to obtain roll gap measured values of all the pulling and straightening rollers;
and S05, the automatic control system compares the roll gap measured value with the roll gap set value, and if the difference between the measured value and the set value is larger than the preset value, the roll gap set value is calibrated again to be the measured value.
8. The intelligent calibration method for the roll gap value of the withdrawal and straightening unit for the continuous casting of the square billets is applied to the roll gap value measuring device of the withdrawal and straightening unit as claimed in claim 3, and is characterized by comprising the following steps of:
s11, feeding the dummy bar into a withdrawal and straightening machine;
s12, starting the withdrawal and straightening machine to press a withdrawal and straightening rod on the dummy bar;
s13, pulling a dummy bar, and recording a measured value by a measuring device in the process that a straightening and withdrawal stick is pressed on an upper measuring head, wherein the sum of the minimum value of the measured value and a fixed value H1 is a roll gap measured value;
s14, measuring all the pulling and straightening rollers to obtain roll gap measured values of all the pulling and straightening rollers;
s15, the automatic control system compares the roll gap measured value with the roll gap set value, if the difference between the measured value and the detected value is larger than the set value, the roll gap set value is recalibrated based on the measured value.
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| CN202110355370.7A CN113084101A (en) | 2021-03-31 | 2021-03-31 | Device for measuring roll gap value of tension leveler and intelligent calibration method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114951578A (en) * | 2022-05-31 | 2022-08-30 | 北京高创智信冶金科技有限公司 | Soft reduction roll gap control method suitable for continuous casting square billet |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201543791U (en) * | 2009-10-15 | 2010-08-11 | 宝山钢铁股份有限公司 | Continuous casting machine casting-roll gap instrument |
| KR20130075825A (en) * | 2011-12-28 | 2013-07-08 | 주식회사 포스코 | Roll gap-checking apparatus for continuous casting plant |
| JP2015098033A (en) * | 2013-11-18 | 2015-05-28 | Ｊｆｅスチール株式会社 | Roll gap management method for continuous casting machine |
| CN206779402U (en) * | 2017-04-07 | 2017-12-22 | 宝山钢铁股份有限公司 | A kind of mounting structure of the online roll gap meter of jaw type |
| CN108436051A (en) * | 2017-02-16 | 2018-08-24 | 宝山钢铁股份有限公司 | A kind of integrated online roll gap meter of chain link |
| CN108602100A (en) * | 2016-02-04 | 2018-09-28 | 首要金属科技德国有限责任公司 | Model prediction band positioner |
| CN108687322A (en) * | 2017-04-07 | 2018-10-23 | 上海宝钢工业技术服务有限公司 | A kind of online roll gap meter of sheet billet continuous casting |
| CN108687318A (en) * | 2017-04-07 | 2018-10-23 | 宝山钢铁股份有限公司 | A kind of protective device of the roll gap measuring mechanism of the online roll gap meter of jaw type |
-
2021
- 2021-03-31 CN CN202110355370.7A patent/CN113084101A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201543791U (en) * | 2009-10-15 | 2010-08-11 | 宝山钢铁股份有限公司 | Continuous casting machine casting-roll gap instrument |
| KR20130075825A (en) * | 2011-12-28 | 2013-07-08 | 주식회사 포스코 | Roll gap-checking apparatus for continuous casting plant |
| JP2015098033A (en) * | 2013-11-18 | 2015-05-28 | Ｊｆｅスチール株式会社 | Roll gap management method for continuous casting machine |
| CN108602100A (en) * | 2016-02-04 | 2018-09-28 | 首要金属科技德国有限责任公司 | Model prediction band positioner |
| CN108436051A (en) * | 2017-02-16 | 2018-08-24 | 宝山钢铁股份有限公司 | A kind of integrated online roll gap meter of chain link |
| CN206779402U (en) * | 2017-04-07 | 2017-12-22 | 宝山钢铁股份有限公司 | A kind of mounting structure of the online roll gap meter of jaw type |
| CN108687322A (en) * | 2017-04-07 | 2018-10-23 | 上海宝钢工业技术服务有限公司 | A kind of online roll gap meter of sheet billet continuous casting |
| CN108687318A (en) * | 2017-04-07 | 2018-10-23 | 宝山钢铁股份有限公司 | A kind of protective device of the roll gap measuring mechanism of the online roll gap meter of jaw type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114951578A (en) * | 2022-05-31 | 2022-08-30 | 北京高创智信冶金科技有限公司 | Soft reduction roll gap control method suitable for continuous casting square billet |
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