CN104815850A - Micro-tension control system and method of hydraulic tension warm rolling mill - Google Patents
Micro-tension control system and method of hydraulic tension warm rolling mill Download PDFInfo
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- CN104815850A CN104815850A CN201510179687.4A CN201510179687A CN104815850A CN 104815850 A CN104815850 A CN 104815850A CN 201510179687 A CN201510179687 A CN 201510179687A CN 104815850 A CN104815850 A CN 104815850A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
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Abstract
The invention relates to a micro-tension control system and method of a hydraulic tension warm rolling mill, and belongs to the technical field of tension control of hydraulic tension warm rolling mills. The micro-tension control system comprises a left tension hydraulic cylinder, a left hydraulic system, a right tension hydraulic cylinder and a right hydraulic system. Each hydraulic system comprises a proportional overflow valve, a servo valve and a proportional pressure-reducing valve. In the stage that tension of a rolled piece is established, the stage that the rolled piece is rolled, and the shutdown stage that pass rolling ends, the opening and closing states of the left proportional overflow valve, the left servo valve, the left proportional pressure-reducing valve, the right proportional overflow valve, the right servo valve and the right proportional pressure-reducing valve are controlled, corresponding control quantities are set for the valves, and therefore the tension hydraulic cylinders can conduct tension closed-loop adjustment through the proportional pressure-reducing valves and tensiometers, or through the proportional overflow valves and the tensiometers. In the feeding and discharging stages of the rolled piece, the tension hydraulic cylinders conduct position closed-loop adjustment through the servo valves and displacement sensors. According to the invention, the tension control mode is simpler and more efficient, the tension control accuracy is effectively guaranteed, and micro-tension rolling of high-fragility or difficult-to-deform metal strip materials is achieved.
Description
Technical field
The invention belongs to hydraulic pressure all-pull mill tension control technology field, particularly relate to a kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System and method.
Background technology
At present, the hydraulic pressure tension force warm-rolling machine of experiment can carry out on-line heating to unitary piece of metal band sample and carry out tension-rolling, for carrying out normal temperature difficult deformable metal warm-rolling process test research, for realizing the suitability for industrialized production creation technical conditions of metal sheet band.
For the sheet metal strip under normal temperature with larger fragility or difficult distortion, usually to need after on-line heating and carry out warm-rolling under Minimal Tension (< 3kN) condition, in order to ensure the rolling accuracy of rolled piece, the control accuracy of Minimal Tension just must be ensured.And existing tension control method is position-force control and closed-loop tension control by realizing tension force hydraulic cylinder while of control servo valve flow, the method needs to carry out accurate Calculation to the front sliding rate in the operation of rolling and rear sliding rate, it is more suitable for cold-rolled process, and for warm-rolling process, due to front sliding rate and rear sliding rate and coefficient of friction, reduction ratio, the factors such as THICKNESS CALCULATION precision are relevant, and coefficient of friction and rolled piece temperature, the factor such as roller temperature and roll surface roughness is relevant, therefore cause the error of calculation of the front sliding rate in warm-rolling process and rear sliding rate larger, make the tension force control accuracy in warm-rolling process not high, often belt phenomenon is there is in the operation of rolling.So, existing tension control method inapplicable hydraulic pressure tension force warm-rolling machine.
Therefore, need a kind of mild tension condition method being suitable for hydraulic pressure tension force warm-rolling machine badly, the mild tension condition precision in warm-rolling process can be ensured, and ensure the rolling accuracy with larger fragility or difficult deformable metal band.
Summary of the invention
For prior art Problems existing, the invention provides a kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System and method, the mild tension condition precision in warm-rolling process can be ensured, and ensure the rolling accuracy of rolled piece.
To achieve these goals, the present invention adopts following technical scheme: a kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System, comprise left clamp, right clamp, left tension force hydraulic cylinder, right tension force hydraulic cylinder, left hydraulic system and right hydraulic system, described left clamp is connected with the piston rod of left tension force hydraulic cylinder, in its junction, left tensometer is installed, described right clamp is connected with the piston rod of right tension force hydraulic cylinder, is provided with right tensometer in its junction; The built-in left dislocation sensor of described left tension force hydraulic cylinder, the built-in right displacement transducer of described right tension force hydraulic cylinder;
Left proportional pressure control valve, left servo valve and left proportional pressure-reducing valve is comprised in described left hydraulic system, the oil-in of described left proportional pressure-reducing valve is connected with the high pressure fuel source of left hydraulic system, the oil-out of left proportional pressure-reducing valve is connected with the oil-in of left servo valve, oil-out one tunnel of left servo valve is connected with the rod chamber of left tension force hydraulic cylinder, another road is connected with the oil-in of left proportional pressure control valve, and the oil-out of left proportional pressure control valve is connected with the supply reservoir of left hydraulic system; The described rodless cavity of left tension force hydraulic cylinder is connected with the low pressure oil sources of left hydraulic system;
Right proportional pressure control valve, right servo valve and right proportional pressure-reducing valve is comprised in described right hydraulic system, the oil-in of described right proportional pressure-reducing valve is connected with the high pressure fuel source of right hydraulic system, the oil-out of right proportional pressure-reducing valve is connected with the oil-in of right servo valve, oil-out one tunnel of right servo valve is connected with the rod chamber of right tension force hydraulic cylinder, another road is connected with the oil-in of right proportional pressure control valve, and the oil-out of right proportional pressure control valve is connected with the supply reservoir of right hydraulic system; The described rodless cavity of right tension force hydraulic cylinder is connected with the low pressure oil sources of right hydraulic system.
Between the oil-in and the high pressure fuel source of left hydraulic system of described left proportional pressure-reducing valve, between the oil-in of right proportional pressure-reducing valve and the high pressure fuel source of right hydraulic system, be all connected with high pressure filter, between the oil-in and high pressure filter of described left proportional pressure-reducing valve, the oil-in of right proportional pressure-reducing valve and and high pressure filter between be all connected with check valve.
All accumulator is connected with at the oil-in of described left proportional pressure-reducing valve, the oil-in of right proportional pressure-reducing valve.
The rodless cavity of described left tension force hydraulic cylinder, the rodless cavity of right tension force hydraulic cylinder are all connected with oil pressure sensor and pressure measuring tie-in in turn; The rod chamber of described left tension force hydraulic cylinder, the rod chamber of right tension force hydraulic cylinder are all connected with pressure measuring tie-in and oil pressure sensor in turn.
All check valve is connected with between the oil-out and the supply reservoir of left hydraulic system of described left proportional pressure control valve, between the oil return opening of left servo valve and the supply reservoir of left hydraulic system, between the oil-out of right proportional pressure control valve and the supply reservoir of right hydraulic system, between the oil return opening of right servo valve and the supply reservoir of right hydraulic system.
The mild tension condition method of the hydraulic pressure tension force warm-rolling machine Minimum Tension Control System described in employing, comprises the steps:
Step one: before rolling starts, control left servo valve, right servo valve is in open mode, and controlled quentity controlled variable is all set as 3% ~ 5%, control left proportional pressure control valve, right proportional pressure control valve is in closed condition, start left hydraulic system and right hydraulic system, be left tension force hydraulic cylinder fuel feeding by left hydraulic system, by right hydraulic system to right tension force hydraulic cylinder fuel feeding, now left tension force hydraulic cylinder carries out tension closed loop adjustment by left proportional pressure-reducing valve and left tensometer, right tension force hydraulic cylinder carries out tension closed loop adjustment by right proportional pressure-reducing valve and right tensometer, for rolled piece sets up tension force,
Step 2: be rolled
(1) when rolling direction from right to left time, control left servo valve and be in open mode, and controlled quentity controlled variable is set as 70% ~ 100%, control left proportional pressure control valve and be in closed condition, control right servo valve and be in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control right proportional pressure-reducing valve and be in open mode, and controlled quentity controlled variable is set as 50% ~ 90%, now left tension force hydraulic cylinder carries out tension closed loop adjustment by left proportional pressure-reducing valve and left tensometer, right tension force hydraulic cylinder carries out tension closed loop adjustment by right proportional pressure control valve and right tensometer, realize the warm-rolling of rolled piece,
(2) when rolling direction from left to right time, control right servo valve and be in open mode, and controlled quentity controlled variable is set as 70% ~ 100%, control right proportional pressure control valve and be in closed condition, control left servo valve and be in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control left proportional pressure-reducing valve and be in open mode, and controlled quentity controlled variable is set as 50% ~ 90%, now right tension force hydraulic cylinder carries out tension closed loop adjustment by right proportional pressure-reducing valve and right tensometer, left tension force hydraulic cylinder carries out tension closed loop adjustment by left proportional pressure control valve and left tensometer, realize the warm-rolling of rolled piece,
Step 3: at the end of single passage or whole passes, hydraulic pressure tension force warm-rolling machine is in dead ship condition, control left servo valve, right servo valve is in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control left proportional pressure control valve, right proportional pressure control valve is in closed condition, now left tension force hydraulic cylinder carries out tension closed loop adjustment by left proportional pressure-reducing valve and left tensometer, and right tension force hydraulic cylinder carries out tension closed loop adjustment by right proportional pressure-reducing valve and right tensometer;
Step 4: after whole passes terminates, first by left, the tension force of right hydraulic system unloading rolled piece, then control roll gap to lift, open left clamp or right clamp, control left proportional pressure-reducing valve again and right proportional pressure-reducing valve is in open mode, and controlled quentity controlled variable is set as 50% ~ 90%, control left proportional pressure control valve and right proportional pressure control valve is in closed condition, now left tension force hydraulic cylinder carries out position closed loop adjustment by left servo valve and left dislocation sensor, right tension force hydraulic cylinder carries out position closed loop adjustment by right servo valve and right displacement transducer, and then make left tension force hydraulic cylinder and right tension force hydraulic cylinder piston rod return in cylinder, now open right clamp or left clamp takes off the good rolled piece of rolling.
Beneficial effect of the present invention:
The present invention compared with prior art, overcome limitation and deficiency that traditional tension control technology can only meet cold-rolling mill, and tension control is more effectively simple, when there is larger fragility or difficult deformable metal band, effectively ensure that the tension force control accuracy in warm-rolling process, and realize Minimal Tension (< 3kN) rolling, improve the final rolling quality of strip in razor-thin (thickness of strip < 0.1mm).
Accompanying drawing explanation
Fig. 1 is a kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System schematic diagram of the present invention;
In figure, 1-warm-rolling machine, 2-rolled piece, 3-left clamp, 4-right clamp, 5-left tension force hydraulic cylinder, 6-right tension force hydraulic cylinder, the rodless cavity of 7-left tension force hydraulic cylinder, the rod chamber of 8-left tension force hydraulic cylinder, the rodless cavity of 9-right tension force hydraulic cylinder, the rod chamber of 10-right tension force hydraulic cylinder, 11-left dislocation sensor, 12-right displacement transducer, 13-left tensometer, 14-right tensometer, 15-left proportional pressure control valve, 16-right proportional pressure control valve, 17-left servo valve, 18-right servo valve, 19-left proportional pressure-reducing valve, 20-right proportional pressure-reducing valve, 21-accumulator, 22-high pressure filter, 23-check valve, 24-pressure measuring tie-in, 25-oil pressure sensor.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System, comprise left clamp 3, right clamp 4, left tension force hydraulic cylinder 5, right tension force hydraulic cylinder 6, left hydraulic system and right hydraulic system, described left clamp 3 is connected with the piston rod of left tension force hydraulic cylinder 5, in its junction, left tensometer 13 is installed, described right clamp 4 is connected with the piston rod of right tension force hydraulic cylinder 6, is provided with right tensometer 14 in its junction; The built-in left dislocation sensor 11 of described left tension force hydraulic cylinder 5, the built-in right displacement transducer 12 of described right tension force hydraulic cylinder 6;
Left proportional pressure control valve 15, left servo valve 17 and left proportional pressure-reducing valve 19 is comprised in described left hydraulic system, the oil-in of described left proportional pressure-reducing valve 19 is connected with the high pressure fuel source of left hydraulic system, the oil-out of left proportional pressure-reducing valve 19 is connected with the oil-in of left servo valve 17, oil-out one tunnel of left servo valve 17 is connected with the rod chamber 8 of left tension force hydraulic cylinder 5, another road is connected with the oil-in of left proportional pressure control valve 15, and the oil-out of left proportional pressure control valve 15 is connected with the supply reservoir of left hydraulic system; The described rodless cavity 7 of left tension force hydraulic cylinder 5 is connected with the low pressure oil sources of left hydraulic system;
Right proportional pressure control valve 16, right servo valve 18 and right proportional pressure-reducing valve 20 is comprised in described right hydraulic system, the oil-in of described right proportional pressure-reducing valve 20 is connected with the high pressure fuel source of right hydraulic system, the oil-out of right proportional pressure-reducing valve 20 is connected with the oil-in of right servo valve 18, oil-out one tunnel of right servo valve 18 is connected with the rod chamber 10 of right tension force hydraulic cylinder 6, another road is connected with the oil-in of right proportional pressure control valve 16, and the oil-out of right proportional pressure control valve 16 is connected with the supply reservoir of right hydraulic system; The described rodless cavity 9 of right tension force hydraulic cylinder 6 is connected with the low pressure oil sources of right hydraulic system.
Between the oil-in and the high pressure fuel source of left hydraulic system of described left proportional pressure-reducing valve 19, between the oil-in of right proportional pressure-reducing valve 20 and the high pressure fuel source of right hydraulic system, be all connected with high pressure filter 22, between the oil-in and high pressure filter 22 of described left proportional pressure-reducing valve 19, the oil-in of right proportional pressure-reducing valve 20 and and high pressure filter 22 between be all connected with check valve 23.
Accumulator 21 is all connected with at the described oil-in of left proportional pressure-reducing valve 19, the oil-in of right proportional pressure-reducing valve 20.
The rodless cavity 7 of described left tension force hydraulic cylinder, the rodless cavity 9 of right tension force hydraulic cylinder 6 are all connected with oil pressure sensor 25 and pressure measuring tie-in 24 in turn; The rod chamber 8 of described left tension force hydraulic cylinder 5, the rod chamber 10 of right tension force hydraulic cylinder 6 are all connected with pressure measuring tie-in 24 and oil pressure sensor 25 in turn.
Check valve 23 is all connected with between the oil-out and the supply reservoir of left hydraulic system of described left proportional pressure control valve 15, between the oil return opening of left servo valve 17 and the supply reservoir of left hydraulic system, between the oil-out of right proportional pressure control valve 16 and the supply reservoir of right hydraulic system, between the oil return opening of right servo valve 18 and the supply reservoir of right hydraulic system.
Embodiment
In the present embodiment, rolled piece 2 is AZ31 Magnesium alloy strip, and original dimension is 3.95mm × 200mm × 1000mm, and target thickness is of a size of 0.7mm; The backing roll of hydraulic pressure tension force warm-rolling machine is of a size of φ 480 × 350mm, and working roll is of a size of φ 200 × 370mm; The cylinder diameter of left and right tension force hydraulic cylinder is 90mm, and diameter of piston rod is 63mm, and stroke is 2100mm; The flow of left and right proportional pressure-reducing valve is 40L/min; The model of left and right servo valve is D661; The flow of left and right proportional pressure control valve is 40L/min; The maximum range of left and right displacement transducer is 2150mm, and certainty of measurement is 0.01mm; The maximum range of left and right tensometer is 10kN, and certainty of measurement is 0.1kN; The hydraulic oil that the high pressure fuel source of left and right hydraulic system provides is 21MPa, and the low pressure oil that the low pressure oil sources of left and right hydraulic system provides is 3MPa; Master control system adopts the PLC master control system of Siemens S7-400 series CPU416+FM458.
Because rolled piece 2 is AZ31 Magnesium alloy strip, according to the material behavior of rolled piece 2, determine employing 6 passes scheme, rolled piece 2 reaches target thickness after 6 passes, and the first passage to the 6th passes time, its tension force setting value is followed successively by 4kN, 3kN, 2.5kN, 2kN, 1.5kN, 1.2kN.
The mild tension condition method of the hydraulic pressure tension force warm-rolling machine Minimum Tension Control System described in employing, comprises the steps:
Step one: before rolling starts, control left servo valve 17, right servo valve 18 is in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control left proportional pressure control valve 15, right proportional pressure control valve 16 is in closed condition, start left hydraulic system and right hydraulic system, be left tension force hydraulic cylinder 5 fuel feeding by left hydraulic system, by right hydraulic system to right tension force hydraulic cylinder fuel feeding, now left tension force hydraulic cylinder 5 carries out tension closed loop adjustment by left proportional pressure-reducing valve 19 and left tensometer 13, right tension force hydraulic cylinder 6 carries out tension closed loop adjustment by right proportional pressure-reducing valve 20 and right tensometer 14, for rolled piece 2 sets up tension force,
Step 2: be rolled
Because the present embodiment adopts 6 passes, therefore set the first, the 3rd, the 5th passes direction as from right to left, second, four, six passes directions are from left to right;
(1) when rolling direction from right to left time, control left servo valve 17 and be in open mode, and controlled quentity controlled variable is set as 70% ~ 100%, control left proportional pressure control valve 15 and be in closed condition, control right servo valve 18 and be in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control right proportional pressure-reducing valve 20 and be in open mode, and controlled quentity controlled variable is set as 50% ~ 90%, now left tension force hydraulic cylinder 5 carries out tension closed loop adjustment by left proportional pressure-reducing valve 19 and left tensometer 13, right tension force hydraulic cylinder 6 carries out tension closed loop adjustment by right proportional pressure control valve 16 and right tensometer 14, realize the warm-rolling of rolled piece 2,
(2) when rolling direction from left to right time, control right servo valve 18 and be in open mode, and controlled quentity controlled variable is set as 70% ~ 100%, control right proportional pressure control valve 16 and be in closed condition, control left servo valve 17 and be in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control left proportional pressure-reducing valve 19 and be in open mode, and controlled quentity controlled variable is set as 50% ~ 90%, now right tension force hydraulic cylinder 6 carries out tension closed loop adjustment by right proportional pressure-reducing valve 20 and right tensometer 14, left tension force hydraulic cylinder 5 carries out tension closed loop adjustment by left proportional pressure control valve 15 and left tensometer 13, realize the warm-rolling of rolled piece 2,
Step 3: at the end of single passage or whole passes, hydraulic pressure tension force warm-rolling machine is in dead ship condition, control left servo valve 17, right servo valve 18 is in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control left proportional pressure control valve 15, right proportional pressure control valve 16 is in closed condition, now left tension force hydraulic cylinder 5 carries out tension closed loop adjustment by left proportional pressure-reducing valve 19 and left tensometer 13, and right tension force hydraulic cylinder 6 carries out tension closed loop adjustment by right proportional pressure-reducing valve 20 and right tensometer 14;
Step 4: after whole passes terminates, first by left, the tension force of right hydraulic system unloading rolled piece 2, then control roll gap to lift, open left clamp 3 or right clamp 4, control left proportional pressure-reducing valve 19 again and right proportional pressure-reducing valve 20 is in open mode, and controlled quentity controlled variable is set as 50% ~ 90%, control left proportional pressure control valve 15 and right proportional pressure control valve 16 is in closed condition, now left tension force hydraulic cylinder 5 carries out position closed loop adjustment by left servo valve 17 and left dislocation sensor 11, right tension force hydraulic cylinder 6 carries out position closed loop adjustment by right servo valve 18 and right displacement transducer 12, and then make left tension force hydraulic cylinder 5 and right tension force hydraulic cylinder 6 piston rod return in cylinder, now open right clamp 4 or left clamp 3 takes off the good rolled piece of rolling 2.
In like manner, with reference to step 4, tension force hydraulic cylinder carries out position closed loop adjustment by servo valve and displacement transducer, can realize the material loading of rolled piece 2.
In the whole operation of rolling, in cycling start with when stopping, tension fluctuation scope is within ± 0.5kN; In lifting speed section, tension fluctuation scope is within ± 0.2kN; At at the uniform velocity rolling sequence, tension fluctuation scope is within ± 0.1kN, and belt phenomenon does not appear in rolled piece 2, and rolled piece satisfactory quality, thus demonstrate validity of the present invention.
Scheme in embodiment is also not used to limit scope of patent protection of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and is all contained in the scope of the claims of this case.
Claims (6)
1. a hydraulic pressure tension force warm-rolling machine Minimum Tension Control System, it is characterized in that: comprise left clamp, right clamp, left tension force hydraulic cylinder, right tension force hydraulic cylinder, left hydraulic system and right hydraulic system, described left clamp is connected with the piston rod of left tension force hydraulic cylinder, in its junction, left tensometer is installed, described right clamp is connected with the piston rod of right tension force hydraulic cylinder, is provided with right tensometer in its junction; The built-in left dislocation sensor of described left tension force hydraulic cylinder, the built-in right displacement transducer of described right tension force hydraulic cylinder;
Left proportional pressure control valve, left servo valve and left proportional pressure-reducing valve is comprised in described left hydraulic system, the oil-in of described left proportional pressure-reducing valve is connected with the high pressure fuel source of left hydraulic system, the oil-out of left proportional pressure-reducing valve is connected with the oil-in of left servo valve, oil-out one tunnel of left servo valve is connected with the rod chamber of left tension force hydraulic cylinder, another road is connected with the oil-in of left proportional pressure control valve, and the oil-out of left proportional pressure control valve is connected with the supply reservoir of left hydraulic system; The described rodless cavity of left tension force hydraulic cylinder is connected with the low pressure oil sources of left hydraulic system;
Right proportional pressure control valve, right servo valve and right proportional pressure-reducing valve is comprised in described right hydraulic system, the oil-in of described right proportional pressure-reducing valve is connected with the high pressure fuel source of right hydraulic system, the oil-out of right proportional pressure-reducing valve is connected with the oil-in of right servo valve, oil-out one tunnel of right servo valve is connected with the rod chamber of right tension force hydraulic cylinder, another road is connected with the oil-in of right proportional pressure control valve, and the oil-out of right proportional pressure control valve is connected with the supply reservoir of right hydraulic system; The described rodless cavity of right tension force hydraulic cylinder is connected with the low pressure oil sources of right hydraulic system.
2. a kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System according to claim 1, it is characterized in that: between the oil-in and the high pressure fuel source of left hydraulic system of described left proportional pressure-reducing valve, between the oil-in of right proportional pressure-reducing valve and the high pressure fuel source of right hydraulic system, be all connected with high pressure filter, between the oil-in and high pressure filter of described left proportional pressure-reducing valve, the oil-in of right proportional pressure-reducing valve and and high pressure filter between be all connected with check valve.
3. a kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System according to claim 1, is characterized in that: be all connected with accumulator at the oil-in of described left proportional pressure-reducing valve, the oil-in of right proportional pressure-reducing valve.
4. a kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System according to claim 1, is characterized in that: the rodless cavity of described left tension force hydraulic cylinder, the rodless cavity of right tension force hydraulic cylinder are all connected with oil pressure sensor and pressure measuring tie-in in turn; The rod chamber of described left tension force hydraulic cylinder, the rod chamber of right tension force hydraulic cylinder are all connected with pressure measuring tie-in and oil pressure sensor in turn.
5. a kind of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System according to claim 1, is characterized in that: between the oil-out and the supply reservoir of left hydraulic system of described left proportional pressure control valve, between the oil return opening of left servo valve and the supply reservoir of left hydraulic system, between the oil-out of right proportional pressure control valve and the supply reservoir of right hydraulic system, between the oil return opening of right servo valve and the supply reservoir of right hydraulic system, be all connected with check valve.
6. adopt the mild tension condition method of hydraulic pressure tension force warm-rolling machine Minimum Tension Control System according to claim 1, it is characterized in that comprising the steps:
Step one: before rolling starts, control left servo valve, right servo valve is in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control left proportional pressure control valve, right proportional pressure control valve is in closed condition, start left hydraulic system and right hydraulic system, be left tension force hydraulic cylinder fuel feeding by left hydraulic system, by right hydraulic system to right tension force hydraulic cylinder fuel feeding, now left tension force hydraulic cylinder carries out tension closed loop adjustment by left proportional pressure-reducing valve and left tensometer, right tension force hydraulic cylinder carries out tension closed loop adjustment by right proportional pressure-reducing valve and right tensometer, for rolled piece sets up tension force,
Step 2: be rolled
(1) when rolling direction from right to left time, control left servo valve and be in open mode, and controlled quentity controlled variable is set as 70% ~ 100%, control left proportional pressure control valve and be in closed condition, control right servo valve and be in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control right proportional pressure-reducing valve and be in open mode, and controlled quentity controlled variable is set as 50% ~ 90%, now left tension force hydraulic cylinder carries out tension closed loop adjustment by left proportional pressure-reducing valve and left tensometer, right tension force hydraulic cylinder carries out tension closed loop adjustment by right proportional pressure control valve and right tensometer, realize the warm-rolling of rolled piece,
(2) when rolling direction from left to right time, control right servo valve and be in open mode, and controlled quentity controlled variable is set as 70% ~ 100%, control right proportional pressure control valve and be in closed condition, control left servo valve and be in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control left proportional pressure-reducing valve and be in open mode, and controlled quentity controlled variable is set as 50% ~ 90%, now right tension force hydraulic cylinder carries out tension closed loop adjustment by right proportional pressure-reducing valve and right tensometer, left tension force hydraulic cylinder carries out tension closed loop adjustment by left proportional pressure control valve and left tensometer, realize the warm-rolling of rolled piece,
Step 3: at the end of single passage or whole passes, hydraulic pressure tension force warm-rolling machine is in dead ship condition, control left servo valve, right servo valve is in open mode, and controlled quentity controlled variable is set as 3% ~ 5%, control left proportional pressure control valve, right proportional pressure control valve is in closed condition, now left tension force hydraulic cylinder carries out tension closed loop adjustment by left proportional pressure-reducing valve and left tensometer, and right tension force hydraulic cylinder carries out tension closed loop adjustment by right proportional pressure-reducing valve and right tensometer;
Step 4: after whole passes terminates, first by left, the tension force of right hydraulic system unloading rolled piece, then control roll gap to lift, open left clamp or right clamp, control left proportional pressure-reducing valve again and right proportional pressure-reducing valve is in open mode, and controlled quentity controlled variable is set as 50% ~ 90%, control left proportional pressure control valve and right proportional pressure control valve is in closed condition, now left tension force hydraulic cylinder carries out position closed loop adjustment by left servo valve and left dislocation sensor, right tension force hydraulic cylinder carries out position closed loop adjustment by right servo valve and right displacement transducer, and then make left tension force hydraulic cylinder and right tension force hydraulic cylinder piston rod return in cylinder, now open right clamp or left clamp takes off the good rolled piece of rolling.
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Cited By (4)
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|---|---|---|---|---|
| CN105642670A (en) * | 2016-01-10 | 2016-06-08 | 东北大学 | Coiling type warm-rolling device and method for high-silicon steel |
| CN109026860A (en) * | 2018-08-06 | 2018-12-18 | 中国矿业大学 | Proportional servo valve control hydraulic prop platform column cylinder system and compress control method |
| CN109108072A (en) * | 2018-10-23 | 2019-01-01 | 西部新锆核材料科技有限公司 | A kind of milling method of high-precision zircaloy plate |
| WO2021003761A1 (en) * | 2019-07-09 | 2021-01-14 | 东北大学 | Hydraulic tension system of direct-pulling cold/warm rolling tester, and control method therefor |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3543549A (en) * | 1967-11-21 | 1970-12-01 | Davy & United Eng Co Ltd | Rolling mill control for compensating for the eccentricity of the rolls |
| JPS5010261B1 (en) * | 1969-06-14 | 1975-04-19 | ||
| JPS62104614A (en) * | 1985-10-31 | 1987-05-15 | Nippon Steel Corp | Control method for rolling plate thickness |
| JPH09327714A (en) * | 1996-06-07 | 1997-12-22 | Nisshin Steel Co Ltd | Tension control method of end part in strip width direction by looper device in continuous hot finishing mill |
| JP2001113309A (en) * | 1999-10-18 | 2001-04-24 | Kawasaki Heavy Ind Ltd | Looper for rolling mill |
| CN101011709A (en) * | 2007-01-09 | 2007-08-08 | 东北大学 | Ratio control hydraulic pressure system for implementing belt steel rolling constant-tension control |
| CN102527740A (en) * | 2012-02-28 | 2012-07-04 | 东北大学 | Straight-pull cold-rolling mill tension control method based on speed feedforward |
| CN103567230A (en) * | 2013-11-12 | 2014-02-12 | 中冶东方工程技术有限公司 | Micro-tension control system and method |
| CN104148409A (en) * | 2014-07-23 | 2014-11-19 | 东北大学 | Rolled piece heating method of hydraulic tensioning warm-rolling mill |
| CN104148386A (en) * | 2014-07-01 | 2014-11-19 | 东北大学 | Hydraulic tension warm-rolling machine |
| CN204099314U (en) * | 2014-07-15 | 2015-01-14 | 常州宝菱重工机械有限公司 | The automatic thickness hydraulic control system of high low pressure independence split |
-
2015
- 2015-04-15 CN CN201510179687.4A patent/CN104815850B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3543549A (en) * | 1967-11-21 | 1970-12-01 | Davy & United Eng Co Ltd | Rolling mill control for compensating for the eccentricity of the rolls |
| JPS5010261B1 (en) * | 1969-06-14 | 1975-04-19 | ||
| JPS62104614A (en) * | 1985-10-31 | 1987-05-15 | Nippon Steel Corp | Control method for rolling plate thickness |
| JPH09327714A (en) * | 1996-06-07 | 1997-12-22 | Nisshin Steel Co Ltd | Tension control method of end part in strip width direction by looper device in continuous hot finishing mill |
| JP2001113309A (en) * | 1999-10-18 | 2001-04-24 | Kawasaki Heavy Ind Ltd | Looper for rolling mill |
| CN101011709A (en) * | 2007-01-09 | 2007-08-08 | 东北大学 | Ratio control hydraulic pressure system for implementing belt steel rolling constant-tension control |
| CN102527740A (en) * | 2012-02-28 | 2012-07-04 | 东北大学 | Straight-pull cold-rolling mill tension control method based on speed feedforward |
| CN103567230A (en) * | 2013-11-12 | 2014-02-12 | 中冶东方工程技术有限公司 | Micro-tension control system and method |
| CN104148386A (en) * | 2014-07-01 | 2014-11-19 | 东北大学 | Hydraulic tension warm-rolling machine |
| CN204099314U (en) * | 2014-07-15 | 2015-01-14 | 常州宝菱重工机械有限公司 | The automatic thickness hydraulic control system of high low pressure independence split |
| CN104148409A (en) * | 2014-07-23 | 2014-11-19 | 东北大学 | Rolled piece heating method of hydraulic tensioning warm-rolling mill |
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| CN105642670A (en) * | 2016-01-10 | 2016-06-08 | 东北大学 | Coiling type warm-rolling device and method for high-silicon steel |
| CN109026860A (en) * | 2018-08-06 | 2018-12-18 | 中国矿业大学 | Proportional servo valve control hydraulic prop platform column cylinder system and compress control method |
| CN109108072A (en) * | 2018-10-23 | 2019-01-01 | 西部新锆核材料科技有限公司 | A kind of milling method of high-precision zircaloy plate |
| WO2021003761A1 (en) * | 2019-07-09 | 2021-01-14 | 东北大学 | Hydraulic tension system of direct-pulling cold/warm rolling tester, and control method therefor |
| JP2022539980A (en) * | 2019-07-09 | 2022-09-14 | 東北大学 | HYDRAULIC TENSION SYSTEM AND CONTROL METHOD FOR THE DIRECT COLD/WARM ROLLING TESTER |
| JP7224696B2 (en) | 2019-07-09 | 2023-02-20 | 東北大学 | HYDRAULIC TENSION SYSTEM AND CONTROL METHOD FOR THE DIRECT COLD/WARM ROLLING TESTER |
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Application publication date: 20150805 Assignee: Suzhou Dongbao Haixing metal material technology Co.,Ltd. Assignor: Northeastern University Contract record no.: X2022210000002 Denomination of invention: A micro tension control system and method for hydraulic tension warm rolling mill Granted publication date: 20160831 License type: Common License Record date: 20220111 |
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