CN202162205U - Rolling device for producing magnesium alloy thin plate roll with high toughness and excellent formability - Google Patents
Rolling device for producing magnesium alloy thin plate roll with high toughness and excellent formability Download PDFInfo
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- CN202162205U CN202162205U CN201120148896XU CN201120148896U CN202162205U CN 202162205 U CN202162205 U CN 202162205U CN 201120148896X U CN201120148896X U CN 201120148896XU CN 201120148896 U CN201120148896 U CN 201120148896U CN 202162205 U CN202162205 U CN 202162205U
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Abstract
A rolling device for producing magnesium alloy thin plate roll with high toughness and excellent formability belongs to the metallic material rolling field. The rolling device comprises a rolling mill, an uncoiler, left and right reeling devices, on-line heating and heat insulating devices in the front and rear portion of the rolling mill, a straightener, a bending rectifying machine, a thickness measurement device, a turning tension roller, a guide roller, and a roller heating and lubricating device. On-line continuous heating devices and an advanced PLC feedback control system realizes continuous temperature controlled rolling of magnesium alloy plate rolls. The rolling device has the advantages of uniform heating temperature, high heating efficiency and high temperature control precision. ultra-thin and deformed magnesium alloy rolls of high quality can be effectively produced through a roller preheating and insulation system, a technical lubricating system, a plate control system, and a tension force straightening device, so that the geometric quality and the structure property of rolled materials meet use requirements.
Description
Technical field
The utility model relates to magnesium alloy rolling and is shaped, particularly the thin coiled stock rolling device of magnesium alloy strip coil base.
Background technology
Magnesium alloy sheet roll coil of strip rolling deformation belongs to magnesium alloy deep processing industry, is new material industry and encourage growth project that country supports.The rolling magnesium alloy board of high-performance is the main material of directly making or becoming to have through processing and forming the fine structure part of multiple functions such as conduction, heat radiation, damping, noise control, energy-conservation, lightweight; Be mainly used in and produce electronics and IT products (like computer, communication, consumption electronic product etc.) housing, automotive electronics shell, framework, instrument board, household electrical appliances and war products etc.Compare with moulding process such as magnesium alloy extruding at present commonly used and die casting; The rolling deformation magnesium alloy is because strengthening mechanisms such as grain refinements; Make material possess higher intensity, better plasticity and toughness and diversified mechanical property; Can satisfy the shaping demand of more structural members, production efficiency height and cost are very low, and comprehensive advantage is fairly obvious.Rolling and the forming technique of wrought magnesium alloy thin plate and band volume belongs to international forward position manufacturing technology.There is superior magnesium alloy resource in China and to the demand in high-performance, high formability magnesium alloy strip coil market; The core technology that independent research magnesium alloy thin plate and band roll bending is produced; And with its commercial application, for promoting China's magnesium level of industry, promoting China's non-ferrous metal magnesium alloy industrial upgrading and technological progress to have most important theories and practical significance.
Magnesium alloy is to use the lightest structural metallic material at present, and density is approximately 1.74g/cm3, is 1/4 of steel, 2/3 of aluminium; With steel and aluminium alloys; Magnesium alloy not only has higher specific strength and specific stiffness; And having good heat dispersion, capability of electromagnetic shielding, damping performance and machining property, its product is easy to be recycled, is expected to become important commercial lightweight structural material of 21 century.Magnesium and magnesium alloy board section product are widely used in fields such as Aeronautics and Astronautics, automobile, computer, communication, household electrical appliances and national defence industry.
In state-owned abundant magnesium resource, rank first in the world, account for more than 60% of world's gross reserves.Also be automobile, motorcycle and communication product enormous and latent market simultaneously, have the advantageous condition of development magnesium alloy.But Application of Magnesium is scarcely out of swaddling-clothes, though former magnesium output occupies first place in the world, mostly with primary exporting, magnesium alloy is used few, with developed country such as American-European-Japanese very big gap is arranged.
Traditional magnesium-alloy material mainly obtains (comprising conventional cast technology and novel technologies such as die casting) through the mode of production of casting.Casting back magnesium alloy in following process, the amount of plastic deformation that can bear with the time deformation velocity all very low, very easily ftracture, had a strong impact on the suitability for industrialized production of magnesium alloy.Therefore; Present most of magnesium alloy product adopts die casting, semi-solid casting making method to produce, and because magnesium is the close-packed hexagonal metal, slip system is few; Plastic deformation difficulty, in face of till method processing such as less employing production efficiency is high, performance quality is good forging, rolling and extruding.Because the magnesium alloy crystal grain that casting is produced is tiny inadequately, has component segregation, can not fundamentally solve work brittleness and etching problem, is difficult to prepare the magnesium alloy of function admirable.
Analyze theoretically; Deformed magnesium alloy material is because crystal grain obtains refinement; Solved the segregation problem of material, had the irreplaceable excellent in performance of founding materials, the wrought magnesium alloy product that therefore goes out through extruding, forging, explained hereafter such as rolling; Have higher intensity, better ductility, more diversified mechanical property than founding materials, can satisfy the demand of more structural members.Yet; Magnesium alloy is carried out conventional plastic deformation; The research of particularly high efficiency thin plate roll coil of strip rolling mill practice also is in the starting stage; The thin plate roll coil of strip of deformed magnesium alloy (below the 0.5mm) also all can not carry out large-scale production at present, and the mass production of stamping parts is yet very difficult, thereby is difficult to the premium properties of wrought magnesium alloy is widely used.
The main cause of restriction deformed magnesium alloy extensive use is its relatively poor room temperature forming property.Though magnesium alloy can easily carry out the hot rolling of hot extrusion and slab; But the rolling lumber recovery of the thin plate roll coil of strip below the 0.5mm is very low, and rareer to satisfied deep drawability, reason is that magnesium is the close-packed hexagonal structure metal; Its axial ratio c/a=1.624 particularly is near desirable axial ratio c/a=1.63.Make most of magnesium alloy materials generally can only carry out plastic deformation through basal slip and twin, independent slip system is few, is difficult to six side's metal Ti, Zr as low axial ratio, shows good plasticity through cylinder, the common slippage of faceted pebble.So most of magnesium-alloy materials can only be produced through casting and hot extrusion.In addition, the domestic magnesium alloy board mode of production has limited productivity ratio and properties of product stability.If can improve the plastic deformation ability, particularly deep drawing quality of magnesium alloy largely, then can fundamentally change the cheap former magnesium of outlet of China and the unfavorable situation of transition loss resource.Produce the magnesium alloy sheet band, then can be used to directly make or be made into and have conduction, heat radiation, damping, noise control, the fine structure part of multiple function such as energy-conservation through processing and forming.These parts are in automobile, household electrical appliances, communication, electronic information, sports equipment, and departments such as robot, national defence have wide practical use.
Because the premium properties of wrought magnesium alloy; Development and exploitation wrought magnesium alloy product; Produce high-quality strip (volume) section product and follow-up stamping products and product with anti-corrosion wear-resistant surface; The new technology of formulating wrought magnesium alloy production is a long-term goal of the exploitation magnesium-alloy material that proposes of international magnesium association, magnesium-alloy material obtained to use widely to have great importance, and also be very necessary.
Along with China's economic development; Auto industry, electronic product are progressively becoming the mainstay of China's economic development; Because lightweight, the energy-saving and environmental protection characteristic of magnesium alloy structural part, the operation technique of development magnesium alloy is a key of walking sustainable development path in automobile and electronic product.Reaching the High-efficient Production of magnesium alloy and the high-performance of product then is the key that magnesium alloy uses.The theory and the technical study of carrying out the magnesium alloy sheet efficient production have important theory and practice significance for this reason.
Summary of the invention
To twist in the deformation temperature interval that is allowed when rolling little in order to solve magnesium alloy thin plate and band for the utility model; More and more faster with roll coil of strip attenuate temperature drop; Enough rolling temperatures can't be guaranteed, plate shape, the uppity difficult point of thickness of slab precision of heat/warm-rolling and thin coiled stock can not be carried out continuously, through online heating and attemperator being installed at the roller-way of milling train entrance and exit both sides; When making magnesium alloy thin coiled stock rolling, remain required homogeneous deformation temperature; The power that parts a little control through to the forward and backward coiling machine of milling train realizes rolling production; Unit also adopts the roll constant temperature heating device to keep the gentle roll forming of roller stable; Because the sensitiveness of magnesium alloy flow harden is very big, coercivity is very high, very difficult leveling under the low temperature, and the utility model realizes that through Tension Control plate shape is good through at the forward and backward temperature correction direct sum temperature stretch bending device of straightening that adopts respectively of coiling machine; Also control automatically, guarantee the thickness and precision of strip through calibrator realization thickness of slab is installed before and after milling train; Milling train adopts the asymmetrical rolling technology of the independent transmission of working roll, helps magnesium alloy deformation and rolls thin and grain refinement, improves the structure property of band; Unit also adopts proprietary lubrication technology to improve the surface quality of band; Thereby the Rolling Production technology of high tough, the high formability magnesium alloy sheet roll coil of strip that the plate shape, thickness, surface quality and the structure property that realize the 0.2mm roll coil of strip are good satisfies and produces in enormous quantities and expansion magnesium alloy demands of applications.
A kind ofly prepare high tough, rolling device that the high formability magnesium alloy sheet roll coil of strip is used, comprise the online heater of the online heater of uncoiler 1, coil opener 2, guiding pinch roll 3, the first guiding jockey pulley 4, smoothing roll 5, first 6, first calibrator 7, first roll heating lubricating arrangement 8, milling train 9, second roll heating lubricating arrangement 10, second calibrator 11, second 12, stretch bending device of straightening 13, the second guiding jockey pulley 14, first coiling machine 15, second coiling machine 16.The online heater of uncoiler 1, coil opener 2, guiding pinch roll 3, the first guiding jockey pulley 4, smoothing roll 5, first 6, first calibrator 7, first roll heating lubricating arrangement 8 and second coiling machine 16 be at milling train 9 front ends, and the online heater of second roll heating lubricating arrangement 10, second calibrator 11, second 12, stretch bending device of straightening 13, the second guiding jockey pulley 14, first coiling machine 15 are in milling train 9 rear ends.
Band is pushed ahead, and through guiding pinch roll 3, the entering first guiding jockey pulley 4, gets into straightener 5 again and aligns; The aligning back gets into the first online heater 6 and carries out the online heating of band, and the heating back gets into first calibrator 7 and carries out the measurement of supplied materials thickness, again through first roll heating lubricating arrangement 8; Get into main mill 9 and be rolled, rolling after through second roll heating lubricating arrangement 10, get into the measurement that second calibrator 11 is rolled thickness; Get into second online heater 12 heating again,, get into first coiling machine through stretch bending device of straightening 13 alignings and the second guiding jockey pulley 14; Behind the winding strips 2-3 circle, unit heating and increasing speed rolling.Be rolled down to magnetic tape trailer on uncoiler one reel during only remaining 3-4 circle, unit slows down rolling, and before magnetic tape trailer got into the first guiding jockey pulley, unit stopped rolling.
Accomplish first passage rolling after, the milling train 9 and first coiling machine 15 carry out reverse rotation subsequently, begin oppositely rollingly, the magnetic tape trailer after rolling is sent into second coiling machine 16 with first passage simultaneously, behind the winding strips 2-3 circle, unit heating and increasing speed rolling.Band carries out back and forth rolling according to technological parameters such as technological temperature of setting and roll gap at second coiling machine 16, milling train 9 and 15 of first coiling machines, until the target thickness that is rolled down to setting.
Uncoiler 1 is positioned at before the coil opener 2, is used for accomplishing together with coil opener beginning, the uncoiling feeding process of roll coil of strip base.Guarantee in the uncoiling operation of rolling band is produced rolling required tension force, and can carry out band centering roll coil of strip width centreline is overlapped with the maintenance of unit center line.
First coiling machine 15, second coiling machine 16 be used for winding strips, set up tension force carries out stable rolling.
The online heater 6 and the 12 pairs of rolling magnesium alloy strips heat and are incubated, to satisfy milling train 9 rolling required temperature ranges.The online thermal recovery induction heating apparatus that adds can carry out real-time FEEDBACK CONTROL heating or insulation through thickness, width and the speed of service of band according to the temperature of rolling demand.
Milling train 9 is used for the roll coil of strip after the heating is passed through the rolling of some passages, finally rolls into the band of desired thickness.This milling train is the independent transmission of working roll, through the control to up-down rollers speed band is realized asymmetrical rolling, thereby reaches the purpose of crystal grain thinning.The unit milling train can be four rollers, six rollers or multiple roll, also can adopt four or five tandem rolling units compositions.
This milling train can be according to different strip width, the different bending roller force of thickness setting, and in rolling, regulate bending roller force, and good to guarantee band plate shape through the adjusting of roll heating and lubricating arrangement 8 and 10 etc.Simultaneously milling train is provided with all-hydraulic automatic gauge control system, realizes the feedforward and the FEEDBACK CONTROL of thickness through the actual measurement thickness of strip of milling train 9 front and back calibrators 7,11, to reach the thickness and precision of setting.
The first guiding jockey pulley 4 and the second guiding jockey pulley 14; Guide band to turn to, assist coiler mandrel feeding and measurement roll coil of strip speed to the left and right on the one hand; Realize parting a little force feedback control through the tensometer of installing on the other hand, thereby guarantee that rolling smooth distortion and control panel shape are good.
Realize that for better plate shape is good, realize online heating finishing through the straightener before and after the milling train 5 and 13 pairs of final passes of stretch bending device of straightening, thereby eliminate the bad phenomenon of plate shape that rolling strip causes.Milling train 9 guarantees that through adopting advanced lubricating process roll coil of strip surface quality is good.
The characteristics of the utility model are to adopt the on-line continuous heater; Adopt advanced PLC feedback control system; Can realize the continuous temperature-controlled rolling of the magnesium alloy plate roll coil of strip, in the operation of rolling, stocking heated or be incubated, make it to remain on the required temperature range of magnesium alloy deformation according to supplied materials state and technological requirement; Have the advantage that heating-up temperature is even, the efficiency of heating surface is high and temperature-controlled precision is high, thereby make that the operation of rolling is able to carry out smoothly; Purpose through asymmetrical rolling realization crystal grain thinning is improved comprehensive mechanical performance; Automatically control the thickness and precision that guarantees thin strip through heat tracing and temperature FEEDBACK CONTROL, thickness; Through roll preheating insulation system, process lubrication system; Realization plate shape such as plat control system, tension straightening device and surface quality are good; Thereby produce the high-quality deformed magnesium alloy tape volume of being with as thin as a wafer expeditiously, make the geometry quality and the structure property of stocking satisfy instructions for use.
Left and right sides coiling machine adopts the mode of air cooling, helps avoiding that temperature retention time is long causes growing up of rolled strip crystal grain on the one hand, helps improving the performance of stocking; Help on the other hand as thin as a wafer with coil rolling, cause the generation of accidents such as broken belt when avoiding Yin Wendu higher because of tension variation, what help technology carries out and improves lumber recovery smoothly, also saves the energy simultaneously widely.
Effect through the guiding jockey pulley realizes that rolling magnesium alloy strip coil is parted a little power to be measured; Cooperate between coiling machine and milling train and form certain force of strain; Realization is to the power that parts a little the control of thin strip; Simultaneously can rectify unit with stretch bending again and cooperate to utilize and carry out the control of plate shape and handle, thereby avoid the thin coiled stock stretch bending of heating is again rectified and handled the bad problem of plate shape that causes owing to reason such as rolling, thereby also save energy consumption greatly the heating band.
Description of drawings
The rolling device sketch map that Fig. 1 is tough for the preparation height, the high formability magnesium alloy sheet roll coil of strip is used.
Uncoiler 1; Coil opener 2; Guiding pinch roll 3; The first guiding jockey pulley 4; Smoothing roll 5; The first online heater 6; First calibrator 7; First roll heating lubricating arrangement 8; Milling train 9; Second roll heating lubricating arrangement 10; The 2nd calibrator 11; The second online heater 12; Stretch bending device of straightening 13; The second guiding jockey pulley 14; First coiling machine 15; Second coiling machine 16.
The specific embodiment
The uncoiler 1 of will the rolling roll coil of strip packing into rotates uncoiler to wear tape speed, simultaneously and coil opener 2 accomplish beginning, uncoiling, the straight peen feeding process of magnesium alloy strip coil base together.Guarantee in the uncoiling operation of rolling band is produced rolling required tension force, and can carry out band centering roll coil of strip width centreline is overlapped with the maintenance of unit center line.
Band is pushed ahead, and through guiding pinch roll 3, the entering first guiding jockey pulley 4, gets into straightener 5 and aligns; Get into the first online heater 6 and carry out the online heating of band, get into first calibrator 7 and carry out the measurement of supplied materials thickness, through first roll heating lubricating arrangement 8; Get into main mill 9 and be rolled, adorn 10 through the heating of second roll is lubricated after rolling, be rolled the measurement of thickness through second calibrator 11; Get into the second online heater 12, through stretch bending device of straightening 13 alignings, through the second guiding jockey pulley 14; Get into first coiling machine, behind the winding strips 2-3 circle, unit heating and increasing speed rolling.Be rolled down to magnetic tape trailer on uncoiler one reel during only remaining 3-4 circle, unit slows down rolling, and before magnetic tape trailer got into the first guiding jockey pulley, unit stopped rolling.
Accomplish first passage rolling after, the milling train 9 and first coiling machine 15 carry out reverse rotation subsequently, begin oppositely rollingly, the magnetic tape trailer after rolling is sent into second coiling machine 16 with first passage simultaneously, behind the winding strips 2-3 circle, unit heating and increasing speed rolling.Band carries out back and forth rolling at second coiling machine 16, milling train 9 and 15 of first coiling machines according to technological parameters such as technological temperature of setting and roll gap; Until the target thickness that is rolled down to setting; After accomplishing the whole operation of rolling; The roll coil of strip is taken off from first coiling machine (or second coiling machine), begin the rolling of next roll coil of strip.
In the whole operation of rolling, carry out the isothermal heating according to mill speed, thickness of strip and the width of the roll coil of strip, part power control a little according to the thickness of band, carry out thickness feedforward and FEEDBACK CONTROL according to the measured value of calibrator; Rectify unit according to the plate shape breaker roll temperature of rolled strip and lubricated, straightener and stretch bending and control, realize that thickness of slab, plate shape and surface quality are good.Through the speed of control up-down rollers stocking is carried out asymmetrical rolling according to operating modes such as rolling thickness, temperature, thereby help band attenuate and grain refinement, thereby improve the comprehensive mechanical property of stocking.
Claims (1)
1. one kind prepares high tough, rolling device that the high formability magnesium alloy sheet roll coil of strip is used, and its characteristic comprises: uncoiler (1), coil opener (2), guiding pinch roll (3), the first guiding jockey pulley (4), smoothing roll (5), the first online heater (6), first calibrator (7), first roll heating lubricating arrangement (8), milling train (9), second roll heating lubricating arrangement (10), second calibrator (11), the second online heater (12), stretch bending device of straightening (13), second guiding jockey pulley (14), first coiling machine (15) and second coiling machine (16); Uncoiler (1), coil opener (2), guiding pinch roll (3), the first guiding jockey pulley (4), smoothing roll (5), the first online heater (6), first calibrator (7), first roll heating lubricating arrangement (8) and second coiling machine (16) are at milling train (9) front end; Second roll heating lubricating arrangement (10), second calibrator (11), the second online heater (12), stretch bending device of straightening (13), the second guiding jockey pulley (14) and first coiling machine (15) are in milling train (9) rear end;
Band is pushed ahead, and through guiding pinch roll (3), the entering first guiding jockey pulley (4), gets into straightener (5) again and aligns; The aligning back gets into the first online heater (6) and carries out the online heating of band, and the heating back gets into first calibrator (7) and carries out the measurement of supplied materials thickness, again through first roll heating lubricating arrangement (8); Getting into main mill (9) is rolled; Through second roll heating lubricating arrangement (10), get into the measurement that second calibrator (11) is rolled thickness after rolling, get into the heating of the second online heater (12) again; Through stretch bending device of straightening (13) aligning and the second guiding jockey pulley (14); Get into first coiling machine, behind the winding strips 2-3 circle, unit heating and increasing speed rolling; Be rolled down to magnetic tape trailer on uncoiler one reel during only remaining 3-4 circle, unit slows down rolling, and before magnetic tape trailer got into the first guiding jockey pulley, unit stopped rolling;
Accomplish first passage rolling after, milling train (9) and first coiling machine (15) carry out reverse rotation subsequently, begin oppositely rollingly, the magnetic tape trailer after rolling is sent into second coiling machine (16) with first passage simultaneously, behind the winding strips 2-3 circle, unit heating and increasing speed rolling; Band carries out back and forth rolling between second coiling machine (16), milling train (9) and first coiling machine (15) according to technological parameters such as technological temperature of setting and roll gap, until the target thickness that is rolled down to setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120148896XU CN202162205U (en) | 2011-05-11 | 2011-05-11 | Rolling device for producing magnesium alloy thin plate roll with high toughness and excellent formability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120148896XU CN202162205U (en) | 2011-05-11 | 2011-05-11 | Rolling device for producing magnesium alloy thin plate roll with high toughness and excellent formability |
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| Publication Number | Publication Date |
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| CN202162205U true CN202162205U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120148896XU Expired - Lifetime CN202162205U (en) | 2011-05-11 | 2011-05-11 | Rolling device for producing magnesium alloy thin plate roll with high toughness and excellent formability |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240676A (en) * | 2011-05-11 | 2011-11-16 | 北京科技大学 | Rolling device for preparing high-toughness high-formability magnesium alloy sheet strip coil |
| CN102773255A (en) * | 2012-07-20 | 2012-11-14 | 北京科技大学 | Continuous asynchronous rolling device of magnesium alloy sheet strip coil |
| CN104060202A (en) * | 2014-07-01 | 2014-09-24 | 广东省工业技术研究院(广州有色金属研究院) | Magnesium alloy extrusion material online temperature correction device |
| CN110202002A (en) * | 2019-07-01 | 2019-09-06 | 山西云时代太钢信息自动化技术有限公司 | High magnetic sensing cold milling silicon steel equipment and control method |
-
2011
- 2011-05-11 CN CN201120148896XU patent/CN202162205U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240676A (en) * | 2011-05-11 | 2011-11-16 | 北京科技大学 | Rolling device for preparing high-toughness high-formability magnesium alloy sheet strip coil |
| CN102240676B (en) * | 2011-05-11 | 2013-07-03 | 北京科技大学 | Rolling device for preparing high-toughness high-formability magnesium alloy sheet strip coil |
| CN102773255A (en) * | 2012-07-20 | 2012-11-14 | 北京科技大学 | Continuous asynchronous rolling device of magnesium alloy sheet strip coil |
| CN104060202A (en) * | 2014-07-01 | 2014-09-24 | 广东省工业技术研究院(广州有色金属研究院) | Magnesium alloy extrusion material online temperature correction device |
| CN104060202B (en) * | 2014-07-01 | 2016-09-07 | 广东省材料与加工研究所 | A kind of magnesium alloy extrusion online temperature correction device |
| CN110202002A (en) * | 2019-07-01 | 2019-09-06 | 山西云时代太钢信息自动化技术有限公司 | High magnetic sensing cold milling silicon steel equipment and control method |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20120314 Effective date of abandoning: 20130703 |
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| RGAV | Abandon patent right to avoid regrant |