CN107952800A - A kind of strip finishing mill axial force detection method - Google Patents
A kind of strip finishing mill axial force detection method Download PDFInfo
- Publication number
- CN107952800A CN107952800A CN201711008440.1A CN201711008440A CN107952800A CN 107952800 A CN107952800 A CN 107952800A CN 201711008440 A CN201711008440 A CN 201711008440A CN 107952800 A CN107952800 A CN 107952800A
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- China
- Prior art keywords
- roll
- axial force
- pressure
- oil cylinder
- strip
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B2038/002—Measuring axial forces of rolls
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
A kind of strip finishing mill axial force detection method, the axial force applied to the hot strip rolling mill with hydraulic pressure roll shifting function detect, and belong to metallurgy industry strip mill equipment technical field.Technical solution is：Pressure sensor is installed in the control valve group of the hydraulic pressure roll roll shifting oil cylinder both sides of strip mill, the pressure values and hydraulic pressure cylinder area of two chamber of hydraulic cylinder are detected by pressure sensor, axial force according to suffered by being calculated upper and lower spindle in formula F=P × S, Quick Acquisition, calculating, storage, processing are carried out to the pressure value detected at the same time, consequently facilitating off-line analysis.Beneficial effects of the present invention：The stability of strip mill equipment in process of production is improved, the size of the axial force suffered by spindle can be shown in real time, reduce human cost, method is simple, has good operability and promotional value.
Description
Technical field
A kind of strip finishing mill axial force detection method, the axis applied to the hot strip rolling mill with hydraulic pressure roll shifting function
Detected to power, belong to metallurgy industry strip mill equipment technical field.
Background technology
During belt steel rolling, the generation of axial force can make roll produce axial float, roll axial direction location difficulty, break
Bad rolling stability, therefore need precisely to detect axial force in rolling, facilitate post personnel to be adjusted milling train.
The domestic detection of strip mill axial force now is seldom, mainly installs hydraulic pressure or mechanical axial force detection dress in motor shaft afterbody
Put, but this detection method fragile detection device when not only appliance arrangement is costly, axial force is excessive, and detection error compared with
Greatly.Therefore need to propose a kind of new axial force detection method to solve the practical problem in axial force detection.
The content of the invention
Present invention aims at a kind of strip finishing mill axial force detection method is provided, improve strip mill equipment and producing
During stability, the size of the axial force suffered by real-time display spindle, reduces human cost, and method is simple, has fine
Operability and promotional value, solve prior art existing for the above problem.
The technical scheme is that：
A kind of strip finishing mill axial force detection method, it is poor according to the roll roll shifting oil cylinder pressure at both sides of working roll, obtain strip
Axial force suffered by the upper and lower spindle of milling train；Pressure is installed in the control valve group of the roll roll shifting oil cylinder both sides of strip mill
Sensor, the pressure values and hydraulic pressure cylinder area of two chamber of roll roll shifting oil cylinder are detected by pressure sensor, according to formula F=P ×
The axial force suffered by upper and lower spindle is calculated in S, while the pressure value to detecting is acquired, calculates, stores, handling,
Carry out off-line analysis；Wherein：F -- pressure（N）；P -- pressure (Pa) in roll roll shifting oil cylinder oil pocket；S -- roll roll shifting oil
Cross-sectional area in cylinder oil pocket（㎡）.
The present invention can pass through the roll roll shifting oil cylinder pressure at both sides data of integrated acquisition system collecting work roller, built-in meter
Program is calculated, is directly displayed in LCD pictures, realizes the detection to strip mill axial force.
It is detected using the pressure sensor in the control valve group of hydraulic pressure roll roll shifting oil cylinder both sides, in the control valve group of both sides
Pressure sensor amounts to eight（P1~P8）, upper working rolls and lower working rolls respectively install four.
Beneficial effects of the present invention：The stability of strip mill equipment in process of production is improved, can in real time show and connect
The size of axial force suffered by axis, reduces human cost, method is simple, has good operability and promotional value.
Brief description of the drawings：
Fig. 1 is one roll roll shifting oil cylinder of milling train of the embodiment of the present invention（On entrance）Fundamental diagram and pressure test point P1,
P2；
Fig. 2 is principle of the invention figure.
Embodiment
Below in conjunction with attached drawing, by embodiment, the present invention will be further described.
The present invention comprises the following steps that：
Any position of pipeline between two chamber of milling train roll shifting hydraulic control hydraulic valve group and working roll roll roll shifting oil cylinder, respectively
The pressure sensor of installation detection four two cavity pressures of roll roll shifting oil cylinder of upper working rolls and lower working rolls（P1~P8）, pass through pressure sensor
Detect the pressure values of relevant position；According to pressure formula：
F= P×S
Wherein：F --- --- pressure（N）；
Pressure (Pa) in P --- --- roll roll shifting oil cylinder oil pocket；
Cross-sectional area in S --- --- roll roll shifting oil cylinder oil pocket（㎡）
It is one roll roll shifting oil cylinder of strip mill referring to the drawings 1（That is entrance topping roll roll shifting oil cylinder）Fundamental diagram and pressure
Strong test point pressure P1, P2, other three rolls roll shifting oil cylinders（In outlet, under entrance, under outlet）Detection pressure set is P3-
P8, it is as follows specifically to represent implication：
P1 --- --- inlet of rolling mill topping roll roll shifting oil cylinder plug side oil pressure；P2 --- --- entrance topping roll roll shifting oil cylinder bar side
Oil pressure；
P3 --- --- milling train outlet topping roll roll shifting oil cylinder plug side oil pressure；P4 --- --- exports topping roll roll shifting oil cylinder bar side
Oil pressure；
P5 --- --- inlet of rolling mill bottom roll roll shifting oil cylinder plug side oil pressure；P6 --- --- entrance bottom roll roll shifting oil cylinder bar side
Oil pressure；
P7 --- --- milling train outlet topping roll roll shifting oil cylinder plug side oil pressure；P8 --- --- exports bottom roll roll shifting oil cylinder bar side
Oil pressure.
The axial force F A1+ outlet topping roll roll shiftings of strip mill upper roller axial force F A=entrance topping roll roll shifting oil cylinder detection
The axial force F A2 of oil cylinder detection, then：
FA1=entrance topping roll roll shifting oil cylinder plug side pressure intensity values (P1) × entrance topping roll roll shifting oil cylinder plug lateral area (S1)-entrance
Topping roll roll shifting cylinder rod side pressure intensity values (P2) × entrance topping roll roll shifting cylinder rod lateral area (S2)
FA2=outlet topping roll roll shifting oil cylinder plug side pressure intensity values (P3) × outlet topping roll roll shifting oil cylinder plug lateral area (S1)-outlet
Topping roll roll shifting cylinder rod side pressure intensity values (P4) × outlet topping roll roll shifting cylinder rod lateral area (S2)
The axial force F B1+ outlets bottom roll roll shifting oil cylinder of strip mill lower roll axial force FB=outlet bottom roll roll shifting oil cylinder detection
The axial force F B2 of detection, then：
FB1=entrance bottom roll roll shifting oil cylinder plug side pressure intensity values (P5) × entrance bottom roll roll shifting oil cylinder plug lateral area (S1)-entrance
Bottom roll roll shifting cylinder rod side pressure intensity values (P6) × entrance bottom roll roll shifting cylinder rod lateral area (S2)；
FB2=outlet bottom roll roll shifting oil cylinder plug side pressure intensity values (P7) × outlet bottom roll roll shifting oil cylinder plug lateral area (S1)-outlet
Bottom roll roll shifting cylinder rod side pressure intensity values (P8) × outlet bottom roll roll shifting cylinder rod lateral area (S2)；
It should be noted that roll roll shifting oil cylinder is identical, its oil cylinder piston, piston rod size uniformity cause.Roll roll shifting
The cross-sectional area of oil cylinder plug lateral area S1=roll roll shifting oil cylinder pistons, roll roll shifting cylinder rod lateral area S2=rolls roll shifting oil
The cross-sectional area of cross-sectional area-piston rod of the cylinder piston.
Strip finishing mill system for detecting axial force principle is as shown in Figure 2.
Milling train is grasped and adjusted in time for the ease of mill personnel, and the milling train that computer program's model is calculated is axial
Power is as a result, be intuitively shown on milling train operation console LCD pictures.In mm finishing mill unit axial force real-time display picture, display is every
On the upside of rolling mill entrance, upside, entrance downside, the axial force of outlet downside are exported, while shows the upper roll shaft of every rolling mill
Xiang Li, lower roll axial force and the rack add up to axial force.Also, design includes the above-mentioned each axial force detected in finishing mill
In group axial force real-time tendency monitoring picture, there may be curve and historical query.
In embodiment, certain steel mill 1780mm hot-rolled strip production lines, mm finishing mill unit have seven stand four-high rolling mills, pass through increase
This equipment, highly stable during producing the Thin Specs of below 2.0mm, monthly output Thin Specs reach 100,000 tons, realize without smooth delivery.
For seven rolling mill of finish rolling, roll roll shifting oil cylinder size dimension all same, piston diameter Φ 220mm, piston rod are straight
Footpath Φ 120mm, then it is 38013mm to fill in lateral area2, bar side area be 26703mm2.Such as detect certain for the moment certain rolling mill roll alter
The strong 62.68bar of roller oil cylinder entrance top plug side pressure, the strong 89.23bar of entrance upper boom side pressure, export the strong 86.32bar of top plug side pressure, go out
The strong 77.91bar of side pressure, the strong 93.81bar of entrance lower beam side pressure, the lower plug in outlet are filled under the strong 122.66bar of mouth upper boom side pressure, entrance
The strong 73.57bar of side pressure, outlet lower beam side pressure strong 102.55bar, wherein bar are equal to 0.1MPa=10 for pressure unit5N/m2.That
, the rolling mill：
Axial force F 1=62.68 × 10 that roll shifting plug side is detected on entrance5×38013×10-6-89.23×105×26703×
10-6=-5.4（N）；
Axial force F 2=86.32 × 10 that roll shifting plug side is detected in outlet5×38013×10-6-122.66×105×26703×
10-6=589.2（N）；
Then in the axial force F of upper roller plug side=- 5.4+589.2=583.8（N）；
Axial force F 3=77.91 × 10 that roll shifting plug side is detected under entrance5×38013×10-6-93.81×105×26703×
10-6=45658.4（N）；
Axial force F 4=73.57 × 10 of the lower roll shifting plug side cylinder detection in outlet5×38013×10-6-102.55×105×26703
×10-6=5822.4（N）；
Then under the axial force F of lower roll plug side=45658.4+5822.4=51480.8（N）；
By above-mentioned calculating, which is 583.8N, and lower roll plug side axial force is 51480.8N.
Claims (3)
- A kind of 1. strip finishing mill axial force detection method, it is characterised in that：According to two side pressure of roll roll shifting oil cylinder of working roll Force difference, obtains the axial force suffered by the upper and lower spindle of strip mill；Control valve in the roll roll shifting oil cylinder both sides of strip mill Pressure sensor is installed in group, the pressure values and hydraulic pressure cylinder area of two chamber of roll roll shifting oil cylinder are detected by pressure sensor, Axial force according to suffered by being calculated upper and lower spindle in formula F=P × S, while the pressure value to detecting is acquired, counts Calculate, store, processing, carrying out off-line analysis；Wherein：F -- pressure（N）；P -- pressure (Pa) in roll roll shifting oil cylinder oil pocket；S -- cross-sectional area in roll roll shifting oil cylinder oil pocket（㎡）.
- A kind of 2. strip finishing mill axial force detection method according to claim 1, it is characterised in that：Utilize hydraulic pressure roll Pressure sensor in the control valve group of roll shifting oil cylinder both sides is detected, and pressure sensor amounts to eight in the control valve group of both sides （P1~P8）, upper working rolls and lower working rolls respectively install four.
- A kind of 3. strip finishing mill axial force detection method according to claim 1 or 2, it is characterised in that：By integrated The roll roll shifting oil cylinder pressure at both sides data of acquisition system collecting work roller, built-in calculation procedure are directly aobvious in LCD pictures Show, realize the detection to strip mill axial force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008440.1A CN107952800A (en) | 2017-10-25 | 2017-10-25 | A kind of strip finishing mill axial force detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008440.1A CN107952800A (en) | 2017-10-25 | 2017-10-25 | A kind of strip finishing mill axial force detection method |
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| Publication Number | Publication Date |
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| CN107952800A true CN107952800A (en) | 2018-04-24 |
Family
ID=61964103
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|---|---|---|---|
| CN201711008440.1A Pending CN107952800A (en) | 2017-10-25 | 2017-10-25 | A kind of strip finishing mill axial force detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893486A (en) * | 2021-01-21 | 2021-06-04 | 包头钢铁（集团）有限责任公司 | Real-time online monitoring device and monitoring method for axial force of wide and thick plate working roll |
| CN113250975A (en) * | 2021-05-24 | 2021-08-13 | 合肥工业大学 | Detection and control device and method for axial movement of main shaft of shield pump and shield pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6343705A (en) * | 1986-08-08 | 1988-02-24 | Nippon Senjimia Kk | Instrument for measuring thrust force of floating roll of differential speed rolling mill |
| JPH06106217A (en) * | 1992-09-29 | 1994-04-19 | Kawasaki Steel Corp | Rolling method with grooved roll |
| JPH1147814A (en) * | 1997-07-30 | 1999-02-23 | Kawasaki Steel Corp | Method for controlling meandering of steel sheet |
| CN203494898U (en) * | 2013-08-23 | 2014-03-26 | 上海金艺检测技术有限公司 | Detection device for directly measuring axial force of roller |
| CN204107993U (en) * | 2014-10-22 | 2015-01-21 | 河北钢铁股份有限公司承德分公司 | Short stress rolling mill roller alters detector |
| US20170291204A1 (en) * | 2016-04-08 | 2017-10-12 | Denso Corporation | Monitoring device |
-
2017
- 2017-10-25 CN CN201711008440.1A patent/CN107952800A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6343705A (en) * | 1986-08-08 | 1988-02-24 | Nippon Senjimia Kk | Instrument for measuring thrust force of floating roll of differential speed rolling mill |
| JPH06106217A (en) * | 1992-09-29 | 1994-04-19 | Kawasaki Steel Corp | Rolling method with grooved roll |
| JPH1147814A (en) * | 1997-07-30 | 1999-02-23 | Kawasaki Steel Corp | Method for controlling meandering of steel sheet |
| CN203494898U (en) * | 2013-08-23 | 2014-03-26 | 上海金艺检测技术有限公司 | Detection device for directly measuring axial force of roller |
| CN204107993U (en) * | 2014-10-22 | 2015-01-21 | 河北钢铁股份有限公司承德分公司 | Short stress rolling mill roller alters detector |
| US20170291204A1 (en) * | 2016-04-08 | 2017-10-12 | Denso Corporation | Monitoring device |
Non-Patent Citations (1)
| Title |
|---|
| 杨光辉等: "《轴向移位变凸度技术》", 31 January 2016, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893486A (en) * | 2021-01-21 | 2021-06-04 | 包头钢铁（集团）有限责任公司 | Real-time online monitoring device and monitoring method for axial force of wide and thick plate working roll |
| CN113250975A (en) * | 2021-05-24 | 2021-08-13 | 合肥工业大学 | Detection and control device and method for axial movement of main shaft of shield pump and shield pump |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180424 |
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| RJ01 | Rejection of invention patent application after publication |