CN104148386A - Hydraulic tension warm-rolling machine - Google Patents
Hydraulic tension warm-rolling machine Download PDFInfo
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- CN104148386A CN104148386A CN201410310270.2A CN201410310270A CN104148386A CN 104148386 A CN104148386 A CN 104148386A CN 201410310270 A CN201410310270 A CN 201410310270A CN 104148386 A CN104148386 A CN 104148386A
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Abstract
The invention discloses a hydraulic tension warm-rolling machine which comprises a four-roller reversible mill, tension devices distributed on the two sides of the four-roller reversible mill, a sample heating device, a hydraulic system and an electric control system. According to the hydraulic tension warm-rolling machine, the tension devices are used for exerting tension on samples, the samples are heated online in a resistance heating mode, through a power adjustment control unit and closed-loop control over the heating temperature, different metal strips which are not prone to deformation at normal temperature can be subjected to strip tension rolling experiments within the temperature range from indoor temperature to 800 DEG C, and technical conditions are created for developing different warm-rolling technologies and industrially producing metal thin strips which are not prone to deformation at normal temperature; the samples are single metal strips, compared with a traditional winding type rolling mill, experiment materials can be saved, and experiment cost is lowered.
Description
Technical field
The present invention relates to sheet metal strip rolling, particularly a kind of for to unitary piece of metal band on-line heating with apply the hydraulic pressure tension force warm-rolling machine that tension force is rolled.
Background technology
As everyone knows, for the metal material of difficult distortion under normal temperature, its complicated process of preparation conventionally.
Taking the high-silicon electrical steel in ferrous metal as example, its temperature-room type plasticity is almost nil, is difficult to be processed into the required thin plate of use.At present, the whole world only has the CVD method (chemical vapour deposition (CVD) siliconising method) of JFE company to realize the industrial-scale production of high-silicon electrical steel strip.But there is the shortcoming that technological process is long, environmental pressure is heavy, production efficiency is low, cost is high in the method.Improve the plastic deformation ability of high-silicon electrical steel by heating, in specific range of temperatures, carrying out rolling with (stock) tension is the relatively succinct short flow process new preparation process of high-silicon electrical steel strip efficiently of one, is current international study hotspot.
Again taking the magnesium alloy in non-ferrous metal as example.Magnesium alloy is Patterns for Close-Packed Hexagonal Crystal structure, and plastic deformation ability is poor, and very sensitive to temperature, and this is the key factor of restriction magnesium alloy application.In the magnesium alloy of close-packed hexagonal structure, slip system is few, in the magnesium alloy plate that adopts conventional extrusion and rolling technique to prepare, has strong (0002) basal plane texture, has seriously restricted the raising of its temperature-room type plasticity and forming property.The shaping of magnesium alloy plate need at high temperature be carried out conventionally, if do not apply tension force, cannot obtain the magnesium alloy sheet that template is good.
For the difficult deformable metal of normal temperature, realize suitability for industrialized production metal sheet band, need formulate different warm-rolling technique for different metal, require to possess two functions for the experimental mill of warm-rolling technical study: the one, can apply tension force to sample; The 2nd, in the operation of rolling, sample can be realized on-line heating, make sample remain that heated condition is (because of common sample finish to gauge thinner thickness, the thinnest 0.1mm that reaches, does not remain in the operation of rolling that heated condition temperature can decline very soon, and warm-rolling can not carry out smoothly).At present, the warm-rolling machine that has a this function has no report.
" the vertical pulling type cold rolling machine hydraulic pressure Tension Control Strategy of estimating based on flow " (" material and metallurgical journal " the 12nd phase the 4th volume, Northeastern University's rolling technique and the tandem rolling automation state key Zhang Haoyu of laboratory etc., in December, 2013) a kind of vertical pulling type cold rolling experiment machine only disclosed.This milling train is by four roll reversing rollers and the tensioner and hydraulic pressure and the composition of the control system that are positioned at milling train both sides, and wherein tensioner is made up of the hydraulic clamp of tension force hydraulic cylinder and control thereof.This experimental mill has been solved unitary piece of metal band sample has been applied to strain problem by tensioner, but does not consider the heating problems of sheet metal strip, can not be directly used in the warm-rolling of sheet metal strip.
Summary of the invention
The object of this invention is to provide a kind of experiment hydraulic pressure tension force warm-rolling machine, can carry out on-line heating and apply tension-rolling unitary piece of metal band sample with this milling train, for carrying out the difficult deformable metal warm-rolling of normal temperature process test research, the suitability for industrialized production that realizes metal sheet band creates technical conditions.
For achieving the above object, the present invention by the research to sample heating means, develops a kind of hydraulic pressure tension force warm-rolling machine on the basis of existing vertical pulling type cold rolling experiment machine.This hydraulic pressure tension force warm-rolling machine comprises and essentially identical four roll reversing rollers of vertical pulling type cold rolling experiment machine structure, the tensioner that is distributed in four roll reversing roller both sides, hydraulic system and electric-control system; Be characterized in also comprising sample heating apparatus.
Described four roll reversing rollers comprise: mill housing, main motor, reduction box, drive bearing, backing roll, working roll, depress (or pressing) oil cylinder, changing track for roll and roll change hydraulic cylinder; Wherein main motor is connected with reduction box, and drive bearing connects reduction box and backing roll (or working roll), and depress oil cylinder is arranged on upper backup roll bearing block top (press oil cylinder if adopt, press oil cylinder and be arranged on lower backing roll bearing block below); Depress oil cylinder (or pressing oil cylinder) adopts servo valve to drive, inbuilt displacement sensor; Roll change hydraulic cylinder ties up to roller on changing track for roll and draws in and release;
The described tensioner that is distributed in four roll reversing roller both sides comprises: tension force hydraulic cylinder, hydraulic clamp, slide rail and guide chain; Wherein tension force hydraulic cylinder is connected with hydraulic clamp, and its junction is provided with the tensometer of measuring tension force; Tension force hydraulic cylinder adopts servo valve to drive, the built-in high accuracy displacement sensor that can measure the displacement of tension force hydraulic cylinder and speed;
Described hydraulic system is made up of fuel tank, circulating pump, main pump, accumulator, oil filter and pressure-reducing valve; Hydraulic system is respectively tension force hydraulic cylinder and depress oil cylinder (or pressing oil cylinder) provides high pressure (> 16MPa) and low pressure (< 5MPa) oil sources, for jaw, bascule, the roll change hydraulic cylinder of hydraulic clamp provide middle pressure (10MPa left and right) oil sources;
Described electric-control system comprises: PLC(Programmable Logic Controller), analogue input template, specific function template, analog output template, motion control unit; Analogue input template gathers tensometer signal; Specific function template gathers position and the rate signal of displacement transducer; Analog output template output signal is connected to servo valve; Motion control unit has been used for the speed control of main motor.PLC, according to the tensometer signal of tension force hydraulic cylinder and the position signalling of displacement transducer, completes position closed loop control and the closed-loop tension control of tension force hydraulic cylinder by controlling servo valve; PLC, according to the position signalling of the displacement transducer of depress oil cylinder (or pressing oil cylinder), completes roll depressing position (or pressing position) closed-loop control by controlling servo valve; PLC communicates and is connected with motion control unit, sets mill speed by PLC, and motion control unit completes speed closed loop control;
Described sample heating apparatus comprises: Power Regulation control module, transformer and stube cable; The former side of the output of Power Regulation control module and transformer is joined, and the secondary side of transformer is joined by the jaw of the hydraulic clamp of conducting copper and two tensioners, and is clamped in two samples formation galvanic circles between hydraulic clamp jaw; Between hydraulic clamp and tension force hydraulic cylinder and between hydraulic clamp and slide rail, there is respectively felt pad; Tension force hydraulic cylinder adopts insulation rubber tube turnover oil; Insulation rubber tube and stube cable are placed in guide chain; Corresponding with sample, there is the thermometric instruments of measuring specimen temperature; The specimen temperature signal of this thermometric instruments collection is inputted the analogue input template of described electric-control system, and PLC adjusts the input voltage of transformer according to specimen temperature signal controlling Power Regulation control module, completes the closed-loop control of sample heating-up temperature.
The beneficial effect of hydraulic pressure tension force warm-rolling machine of the present invention:
(1) the present invention adopts tensioner to apply tension force to sample, adopts the mode of resistance heated to carry out on-line heating to sample simultaneously, can realize belt tension warm-rolling object; Closed-loop control by Power Regulation control module and heating-up temperature can realize from the rolling with (stock) tension experiment in room temperature to 800 DEG C temperature range the difficult deformable metal bands of different normal temperature, for developing different warm-rolling technique, realize the difficult deformable metal strip of suitability for industrialized production normal temperature and create technical conditions.
(2) sample that hydraulic pressure tension force warm-rolling machine of the present invention adopts is unitary piece of metal band, compared with traditional coiling type milling train, can greatly save experiment material, reduces experimental cost.
brief description of the drawings:
Fig. 1 is the integral mechanical structure schematic diagram of hydraulic pressure tension force warm-rolling machine of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the structural representation of hydraulic clamp jaw in Fig. 1;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the sample heating apparatus schematic diagram of hydraulic pressure tension force warm-rolling machine of the present invention.
The left tension force hydraulic cylinder of symbol description in figure: 1-, the left tensometer of 2-, the left hydraulic clamp of 3-, the left slide rail of 4-, the left guide chain of 5-, 6-backing roll, 7-working roll, 8-mill housing, 9-bascule, 10-depress oil cylinder, the right guide chain of 11-, the right slide rail of 12-, the right hydraulic clamp of 13-, the right tensometer of 14-, the right tension force hydraulic cylinder of 15-, 16-changing track for roll, 17-cantilever control box, 18-roll change hydraulic cylinder, 19-drive bearing, 20-reduction box, the main motor of 21-, 22-felt pad, 23-guide chain bindiny mechanism, 24-conducting copper, 25-Power Regulation control module, 26-transformer, 27-temperature measuring instrument, 28-stube cable, 29-sample.
detailed description of the invention:
Below in conjunction with drawings and Examples, the invention will be further described.
Hydraulic pressure tension force warm-rolling machine of the present invention comprises four roll reversing rollers, is distributed in two cover tensioners, sample heating apparatus, hydraulic system and the electric-control system of four roll reversing roller both sides.
As depicted in figs. 1 and 2, four roll reversing rollers of this hydraulic pressure tension force warm-rolling machine mainly comprise: mill housing 8, main motor 21, reduction box 20, drive bearing 19, backing roll 6, working roll 7, depress oil cylinder 10, changing track for roll 16, roll change hydraulic cylinder 18 and cantilever control box 17; Wherein main motor 21 is connected with reduction box 20, and drive bearing 19 connects reduction box 20 and backing roll 6, and depress oil cylinder 10 is arranged on upper backup roll bearing block top (press oil cylinder if adopt, press oil cylinder and be arranged on lower backing roll bearing block below); Depress oil cylinder 10 adopts servo valve (not shown) to drive, inbuilt displacement sensor (not shown); Roll change hydraulic cylinder 18 ties up to roller on changing track for roll 16 and draws in and release, cantilever control box 17 is arranged on the fore side of four roll reversing rollers, energy left rotation and right rotation, is inlaid with human-computer interface computer (not shown) on cantilever control box 17, all operations completes on cantilever control box 17.
As depicted in figs. 1 and 2, two cover tensioners of this hydraulic pressure tension force warm-rolling machine are distributed in the milling train left and right sides, mainly comprise: left tension force hydraulic cylinder 1 and right tension force hydraulic cylinder 15, left hydraulic clamp 3 and right hydraulic clamp 13, conducting copper 24, left slide rail 4 and right slide rail 12, left guide chain 5 and right guide chain 11.Wherein left tension force hydraulic cylinder 1 is connected with left hydraulic clamp 3, and left tensometer 2 is installed in its junction, for measuring left side tension force; Right tension force hydraulic cylinder 15 is connected with right hydraulic clamp 13, and right tensometer 14 is installed in its junction, for measuring right side tension force.As shown in Figure 3 and Figure 4, in the side of left hydraulic clamp 3 and right hydraulic clamp 13, conducting copper 24 is installed; Between left hydraulic clamp 3 and left tension force hydraulic cylinder 1 and between left hydraulic clamp 3 and left slide rail 4, adopting respectively felt pad 22 to insulate; Between right hydraulic clamp 13 and right tension force hydraulic cylinder 15 and between right hydraulic clamp 13 and right slide rail 12, adopting respectively felt pad 22 to insulate.Drive left tension force hydraulic cylinder 1 and the right tension force hydraulic cylinder 15 that left hydraulic clamp 3 and right hydraulic clamp 13 open and close to adopt respectively insulation rubber tube (not shown) turnover oil, the left guide chain 5 being connected by guide chain bindiny mechanism 23 and right guide chain 11 are equipped with respectively insulation rubber tube (not shown) and stube cable 28.The interior high accuracy displacement sensor (not shown) that is equipped with respectively of left tension force hydraulic cylinder 1 and right tension force hydraulic cylinder 15, for measuring displacement and the speed of tension force hydraulic cylinder, left and right tension force hydraulic cylinder adopts respectively servo valve (not shown) to drive.
As shown in Figure 5, the sample heating apparatus of this hydraulic pressure tension force warm-rolling machine mainly comprises: Power Regulation control module 25, transformer 26, thermometric instruments 27 and stube cable 28.For ensureing safety, the rated output voltage of selected transformer 26 is less than 36V.The output of Power Regulation control module 25 is connected to the former side of transformer 26; Require to select stube cable 28 according to heating power, the secondary side of transformer 26 is connected respectively to the conducting copper of left tensioner and the conducting copper of right tensioner, the jaw conducting of conducting copper and hydraulic clamp; Sample 29 is clamped between left hydraulic clamp 3 and right hydraulic clamp 13, forms galvanic circle, heats taking sample as resistance.
The hydraulic system (not shown) of this hydraulic pressure tension force warm-rolling machine is made up of fuel tank, circulating pump, main pump, accumulator, oil filter and pressure-reducing valve; Hydraulic system is respectively tension force hydraulic cylinder and depress oil cylinder (or pressing oil cylinder) provides high pressure (> 16MPa) and low pressure (< 5MPa) oil sources, for jaw, bascule 9, the roll change hydraulic cylinder 18 of hydraulic clamp provide middle pressure (10MPa left and right) oil sources;
The electric-control system (not shown) of this hydraulic pressure tension force warm-rolling machine mainly comprises: PLC(Programmable Logic Controller), analogue input template, specific function template, analog output template, motion control unit etc.Analogue input template gathers the signal of measuring sample temperature instrument 27 and tensometer 2,14; Specific function template gathers position and the rate signal of displacement transducer; Analog output template output signal is connected to servo valve and Power Regulation control module 25; Motion control unit has been used for the speed control of main motor 21.PLC, according to tensometer 2 and 14 signals of tension force hydraulic cylinder 1 and 15 and the position signalling of displacement transducer, completes position closed loop control and the closed-loop tension control of tension force hydraulic cylinder by controlling servo valve; PLC, according to the position signalling of the displacement transducer of depress oil cylinder 10, completes the closed-loop control of roll depressing position by controlling servo valve; PLC, according to the signal of measuring sample temperature instrument instrument 27, controls Power Regulation control module 25, and the input voltage of transformer 26 is adjusted, and completes the closed-loop control of sample heating-up temperature; PLC communicates and is connected with motion control unit, sets mill speed by PLC, and motion control unit completes speed closed loop control.
Embodiment
Taking magnesium alloy belt tension warm-rolling as example, the experimentation that utilizes hydraulic pressure tension force warm-rolling machine of the present invention is described below.
Hydraulic pressure tension force warm-rolling machine equipment major parameter:
Backing roll: Φ 480 × 350 mm, working roll: Φ 200 × 370 mm;
Left and right tension force hydraulic cylinder: stroke 2000mm, MOOG servo valve D661;
Depress oil cylinder: stroke 80mm, MOOG servo valve D761;
Hydraulic clamp: can clamp sample maximum ga(u)ge is 10mm, Breadth Maximum 300mm;
Working roll transmission, main motor is 150kW direct current generator;
Transformer efficiency 100kW, secondary side maximum output voltage 20V, maximum heat current 5000A, stube cable is 4 185mm
2copper cable;
Hydraulic system high pressure is 23.5MPa, and middle pressure is 11MPa, and low pressure is 3.5MPa;
Electric-control system is Siemens S7400 series of PLC, and motion control unit is Siemens 6RA80;
Magnesium alloy warm-rolling experimentation:
Selected magnesium alloy material is AZ31, and sample raw materials size: 3.95mm × 200mm × 1000mm(is thick × wide × long), target thickness is 0.7mm.220 DEG C of sample heating-up temperatures, adopt 6 passages to be rolling to target thickness, good boundless the splitting of template.Concrete rolling procedure is as shown in the table.
Claims (1)
1. a hydraulic pressure tension force warm-rolling machine, comprises four roll reversing rollers, is distributed in tensioner, hydraulic system and the electric-control system of four roll reversing roller both sides;
Described four roll reversing rollers comprise: mill housing (8), main motor (21), reduction box (20), drive bearing (19), backing roll (6), working roll (7), depress oil cylinder (10), changing track for roll (16), roll change hydraulic cylinder (18) and cantilever control box (17); Wherein main motor (21) is connected with reduction box (20), and drive bearing (19) connects reduction box (20) and backing roll (6), and depress oil cylinder (10) is arranged on upper backup roll bearing block top; Depress oil cylinder (10) adopts servo valve to drive, inbuilt displacement sensor; Roll change hydraulic cylinder (18) ties up to roller on changing track for roll (16) and draws in and release; Cantilever control box (17) is arranged on the fore side of four roll reversing rollers, energy left rotation and right rotation;
The described tensioner that is distributed in four roll reversing roller both sides comprises: tension force hydraulic cylinder (1,15), hydraulic clamp (3,13), slide rail (4,12) and guide chain (5,11); Wherein tension force hydraulic cylinder is connected with hydraulic clamp, and its junction is provided with the tensometer (2,14) of measuring tension force; Tension force hydraulic cylinder adopts servo valve to drive, the built-in high accuracy displacement sensor that can measure the displacement of tension force hydraulic cylinder and speed;
Described hydraulic system is made up of fuel tank, circulating pump, main pump, accumulator, oil filter and pressure-reducing valve; Hydraulic system is respectively tension force hydraulic cylinder and depress oil cylinder provides high pressure and low pressure oil sources, for jaw, bascule (9), the roll change hydraulic cylinder (18) of hydraulic clamp (3,13) provide middle force feed source;
Described electric-control system comprises: PLC, analogue input template, specific function template, analog output template, motion control unit; Analogue input template gathers tensometer signal; Specific function template gathers position and the rate signal of displacement transducer; Analog output template output signal is connected to servo valve; Motion control unit has been used for the speed control of main motor; PLC, according to the tensometer signal of tension force hydraulic cylinder and the position signalling of displacement transducer, completes position closed loop control and the closed-loop tension control of tension force hydraulic cylinder by controlling servo valve; PLC, according to the position signalling of the displacement transducer of depress oil cylinder, completes the closed-loop control of roll depressing position by controlling servo valve; PLC communicates and is connected with motion control unit, sets mill speed by PLC, and motion control unit completes speed closed loop control;
It is characterized in that: this hydraulic pressure tension force warm-rolling machine also comprises sample heating apparatus; This sample heating apparatus comprises: Power Regulation control module (25), transformer (26) and stube cable (28); The former side of the output of Power Regulation control module (25) and transformer (26) is joined, the secondary side of transformer (26) is joined by the jaw of the hydraulic clamp (3,13) of conducting copper (24) and two tensioners, and the sample (29) being clamped between two hydraulic clamps (3,13) jaw forms galvanic circle; Between hydraulic clamp (3,13) and tension force hydraulic cylinder (1,15) and between hydraulic clamp (3,13) and slide rail (4,12), there is respectively felt pad (22); Tension force hydraulic cylinder (1,15) adopts insulation rubber tube turnover oil; Insulation rubber tube and stube cable (28) are placed in guide chain (5,11); Corresponding with sample, there is the thermometric instruments (27) of measuring specimen temperature; The specimen temperature signal that this thermometric instruments (27) gathers is inputted the analogue input template of described electric-control system, PLC adjusts the input voltage of transformer according to specimen temperature signal controlling Power Regulation control module, completes the closed-loop control of sample heating-up temperature.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815850A (en) * | 2015-04-15 | 2015-08-05 | 东北大学 | Micro-tension control system and method of hydraulic tension warm rolling mill |
| CN105312327A (en) * | 2015-11-26 | 2016-02-10 | 东北大学 | Temperature control method for metal rollingpiece of hydraulic tension warm-rolling mill |
| CN105642670A (en) * | 2016-01-10 | 2016-06-08 | 东北大学 | Coiling type warm-rolling device and method for high-silicon steel |
| CN107030112A (en) * | 2017-03-07 | 2017-08-11 | 重庆市科学技术研究院 | A kind of milling method of magnesium alloy ultrathin plate |
| 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 |
| CN109746268A (en) * | 2019-01-16 | 2019-05-14 | 中南大学 | A kind of monolithic band intelligence deep cooling experimental mill and milling method with tension |
| CN109746269A (en) * | 2019-01-16 | 2019-05-14 | 中南大学 | A kind of asynchronous experimental mill of monolithic band intelligence deep cooling friction speed and milling method with tension |
| WO2021201348A1 (en) * | 2020-03-31 | 2021-10-07 | (주)세일기계 | Apparatus for manufacturing reinforcement duct |
| CN117102238A (en) * | 2023-10-24 | 2023-11-24 | 中国重型机械研究院股份公司 | Hydraulic traction tension rolling system and method for batch rolling |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815850A (en) * | 2015-04-15 | 2015-08-05 | 东北大学 | Micro-tension control system and method of hydraulic tension warm rolling mill |
| CN105312327A (en) * | 2015-11-26 | 2016-02-10 | 东北大学 | Temperature control method for metal rollingpiece of hydraulic tension warm-rolling mill |
| CN105642670A (en) * | 2016-01-10 | 2016-06-08 | 东北大学 | Coiling type warm-rolling device and method for high-silicon steel |
| CN107030112A (en) * | 2017-03-07 | 2017-08-11 | 重庆市科学技术研究院 | A kind of milling method of magnesium alloy ultrathin plate |
| 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 |
| CN109746268A (en) * | 2019-01-16 | 2019-05-14 | 中南大学 | A kind of monolithic band intelligence deep cooling experimental mill and milling method with tension |
| CN109746269A (en) * | 2019-01-16 | 2019-05-14 | 中南大学 | A kind of asynchronous experimental mill of monolithic band intelligence deep cooling friction speed and milling method with tension |
| WO2021201348A1 (en) * | 2020-03-31 | 2021-10-07 | (주)세일기계 | Apparatus for manufacturing reinforcement duct |
| CN117102238A (en) * | 2023-10-24 | 2023-11-24 | 中国重型机械研究院股份公司 | Hydraulic traction tension rolling system and method for batch rolling |
| CN117102238B (en) * | 2023-10-24 | 2024-03-15 | 中国重型机械研究院股份公司 | Hydraulic traction tension rolling system and method for batch rolling |
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Application publication date: 20141119 |