CN106975660A - A kind of magnesium alloy continuous casting tandem rolling device and magnesium alloy continuous casting method for tandem rolling - Google Patents
A kind of magnesium alloy continuous casting tandem rolling device and magnesium alloy continuous casting method for tandem rolling Download PDFInfo
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- CN106975660A CN106975660A CN201710262632.9A CN201710262632A CN106975660A CN 106975660 A CN106975660 A CN 106975660A CN 201710262632 A CN201710262632 A CN 201710262632A CN 106975660 A CN106975660 A CN 106975660A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
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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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
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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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/06—Width
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- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a kind of magnesium alloy continuous casting tandem rolling device and magnesium alloy continuous casting method for tandem rolling, including melting furnace, insulation standing furnace, the preceding liquid case being sequentially connected along rolling direction；Also include twin belt caster, hauling machine and hot rolling mill unit；Twin belt caster includes opposed and synchronous rotary upper ring steel belt and lower ring steel belt up and down, between upper ring steel belt and the lower ring steel belt provided with adjustable berth away from two side plates, enclose to form melt flow channel between upper ring steel belt, lower ring steel belt and two side plates.The present invention solves the larger roll-casting of magnesium alloy finished product of existing double-roller rolling working width, and uneven thickness easily occur causes the problem of magnesium alloy product qualified rate is low；Meanwhile, realize casting machine and hot-rolling mill and produced on same production line, eliminate the processes such as strand, milling face, cogging in hot rolling cogging, disclosure satisfy that plurality of specifications sheet material, product quality is good, and improves lumber recovery, realize that scale magnesium alloy board is rolled.
Description
Technical field
The present invention relates to a kind of magnesium alloy continuous casting tandem rolling device and magnesium alloy continuous casting method for tandem rolling, belong to roll-casting of magnesium alloy skill
Art field.
Background technology
Magnesium alloy has higher specific strength, specific stiffness, damping property, thermal conductivity, electromagnetic wave shielding, free-cutting machinability and easily returned
The good combination properties such as the property received, thus as the important raw and processed materials of the industries such as automobile, motorcycle, space flight and aviation and telecommunications
One of.
Double-roller rolling is that, by continuously casting and rolling bonding, melt bears a certain amount of rolling deformation while solidification, i.e.,
Directly metal bath casting is required high magnesium alloy plate for fields such as automobile, military projects, also need to pass through after casting into sheet material
Cold warm-rolling technique, is rolled into qualified sheet material.However, larger (about 6 millis of the thickness of the roll-casting of magnesium alloy plate of double-roller rolling processing
Rice), and amount of plastic deformation typically only has 3%-5%, subsequent rolling process is complicated, and production efficiency is relatively low, technology stability is inadequate
It is preferable.In addition, double-roller rolling is in the larger roll-casting of magnesium alloy product of working width, easily there is thickness in the middle thickness with both sides
Degree is uneven, causes the problem of qualification rate of magnesium alloy finished product is low.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of magnesium alloy continuous casting tandem rolling device and magnesium alloy
Continuous-casting continuous-rolling method, solves the larger roll-casting of magnesium alloy finished product of existing double-roller rolling working width, uneven thickness easily occurs
Cause the problem of magnesium alloy product qualified rate is low；Meanwhile, realize casting machine and hot-rolling mill and produced on same production line, saved
The processes such as strand, milling face, cogging in hot rolling cogging, disclosure satisfy that plurality of specifications sheet material, product quality is good, and improves
Lumber recovery, realizes that scale magnesium alloy board is rolled.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of magnesium alloy continuous casting tandem rolling device, including be sequentially connected along rolling direction melting furnace, insulation standing furnace, preceding liquid
Case；Characterized in that, also including twin belt caster, hauling machine and hot rolling mill unit；
The twin belt caster include up and down opposed and synchronous rotary upper ring steel belt and lower ring steel belt, it is described on
Between ring steel belt and the lower ring steel belt provided with adjustable berth away from two side plates, the upper ring steel belt, lower annular steel
Enclose to form melt flow channel between band and two side plates, the front end of the melt flow channel forms charging aperture, and its rear end forms discharging
Mouthful；
The charging aperture of the twin belt caster is connected with the discharging opening of preceding liquid case, its discharging opening by the hauling machine with
The charging aperture connection of the hot rolling mill unit.
It is used as a preferred embodiment of the present invention：The twin belt caster also includes frame, rack-mounted dynamic
Power output device, PTO has upper output shaft and lower output shaft opposed up and down, in frame and right up and down
The upper driving wheel and lower driving wheel put, in frame and up and down opposed upper tensioning wheel and lower tensioning wheel；The upper output
Axle is engaged with upper driving wheel, and the upper ring steel belt is installed on the upper driving wheel and upper tensioning wheel；The lower output shaft with
Lower driving wheel engagement, the lower ring steel belt is installed on the lower driving wheel and lower tensioning wheel.
It is used as a preferred embodiment of the present invention：The upper ring steel belt of correspondence and lower annular at the gating location of the frame
Steel band is respectively equipped with an electromagnetic induction heater.
It is used as a preferred embodiment of the present invention：Water inlet pipe is respectively equipped with the middle part of the upper driving wheel and lower driving wheel；
The back side of the upper ring steel belt and lower ring steel belt is respectively equipped with heat pipe cooling system.
It is used as a preferred embodiment of the present invention：The position point of the upper ring steel belt of correspondence and lower ring steel belt in the frame
She You not five equally distributed support rollers.
It is used as a preferred embodiment of the present invention：The hot rolling mill unit includes five heat being sequentially connected along rolling direction
Milling train.
It is used as a preferred embodiment of the present invention：It is additionally provided between the twin belt caster and hauling machine for adjusting magnesium
The thickness controller of the thickness of alloy casting embryo；The discharge end of the hot rolling mill unit is additionally provided with the pinch connected along rolling direction
Roller, cutter, coiling machine, conveyer belt, sheet piler, ejecting gear, so as to constitute continuous casting and rolling production line.
A kind of magnesium alloy continuous casting method for tandem rolling, it is characterised in that comprise the following steps：
1) a kind of magnesium alloy continuous casting tandem rolling device is provided；
2) melt：The raw material magnesium alloy of default proportioning is added in melting furnace under conditions of 710-730 DEG C, after alloying
700-720 DEG C is cooled to, magnesium alloy fused mass is obtained；
3) stand：Magnesium alloy fused mass is transferred to insulation standing furnace by melting furnace and stands preset time；
4) store：Liquid case storage before magnesium alloy fused mass through standing is transferred to；
5) cast：The distance of two blocks of side plates of twin belt caster is adjusted to predetermined width；By the magnesium alloy in preceding liquid case
Melt conveying enters the charging aperture of the melt flow channel of twin belt caster, and magnesium alloy fused mass is being in the melt flow of mobile status all the time
Cooled down in road so that the surface temperature of magnesium alloy fused mass is down to less than 550 DEG C, so as to solidify to form magnesium alloy strand；
6) hot rolling：Magnesium alloy strand is conveyed into by hot rolling mill unit by hauling machine and carries out hot rolling, hot rolling magnesium alloy is obtained
Plate.
Further, step 5) in, magnesium alloy fused mass enters before melt flow channel, with the method for electrostatic precipitation in upper annular steel
The boron nitride of one layer of 21nm thickness of surface spraying of band and lower ring steel belt.
Further, step 5) in, in water inlet pipe being passed through cooling water is once cooled down, the control of water-carrying capacity adjustable range
In 3000-5000L/min, pressure 0.15-0.25MPa；Acetone is injected in the heat pipe of heat pipe cooling system and is vacuumized
Processing.
Further, step 6) in, the detailed process of hot rolling is as follows：450 DEG C of controlling hot rolling temperature level first, first passage
Reduction ratio is 30%；Next controlling hot rolling temperature is 420 DEG C, and percentage pass reduction is 10-15%；Third time controlling hot rolling temperature is
380 DEG C, percentage pass reduction is 10%；Fourth, fifth controlling hot rolling temperature is 380 DEG C, and percentage pass reduction is 5%.
Compared with prior art, the beneficial effects of the present invention are：
The magnesium alloy continuous casting tandem rolling device that the present invention is provided is due to the upper ring steel belt, lower ring steel belt and two side plates
Melt flow channel is formed, casting is into magnesium alloy semi-finished product in melt flow channel for magnesium alloy fused mass, and the spacing distance of two side plates is adjustable
Section, in processing magnesium alloy casting product, the spacing distance of two side plates is adjusted according to the width of magnesium-alloy material, by upper
The pressure force of ring steel belt and lower ring steel belt make magnesium alloy fused mass in melt flow channel uniform casting into magnesium alloy semi-finished product,
Avoid middle in uneven thickness with both sides, cause the problem of qualification rate of magnesium alloy finished product is low, improve magnesium alloy finished product
Qualification rate.Secondly, the hot rolling mill unit of the magnesium alloy continuous casting tandem rolling device includes many hot-rolling mills, the spacing distance of two side plates
It is adjustable, the quantity of hot-rolling mill can be selected according to the thickness of magnesium alloy finished product, is adjusted according to the width of magnesium-alloy material
The spacing distance of two side plates, it is thus possible to produce the finished product of different-thickness different in width according to actual needs.The present invention is also carried
For a kind of magnesium alloy continuous casting method for tandem rolling, it the method achieve casting and rolling produced simultaneously in same production line, with reference to casting
The abbreviated system feature rolled, eliminates the processes such as strand, milling face, cogging in hot rolling cogging technique, by follow-up cold/temperature
Rolling mill practice, can fully meet plurality of specifications sheet material, and product quality is approached with hot rolling cogging, lumber recovery from existing 25%,
More than 50% is brought up to, mill length can be controlled, provide guarantee for follow-up stove rolling rolling mill practice, realize scale magnesium alloy
Board rolling.
Brief description of the drawings
Fig. 1 is the structural representation of the magnesium alloy continuous casting tandem rolling device of the present invention；
Fig. 2 is the structural representation of the twin belt caster of the present invention；
Fig. 3 is the stereogram of the twin belt caster of the present invention.
Fig. 4 is the side view of the twin belt caster of the present invention.
Wherein：1st, melting furnace；2nd, it is incubated standing furnace；3rd, preceding liquid case；4th, twin belt caster；410th, upper ring steel belt；
411st, upper output shaft；412nd, upper driving wheel；413rd, upper tensioning wheel；420th, lower ring steel belt；421st, lower output shaft；422nd, lower driving
Wheel；423rd, lower tensioning wheel；430th, side plate；440th, melt flow channel；450th, electromagnetic induction heater；460th, water inlet pipe；470th, it is hot
Pipe cooling system；5th, thickness controller；6th, hauling machine；7th, hot-rolling mill；8th, pinch roll；9th, cutter；10th, unload and take machine；11st, convey
Band；12nd, sheet piler；13rd, ejecting gear.
Embodiment
Below, with reference to accompanying drawing and embodiment, the present invention is described further：
As shown in Figures 1 to 4, a kind of magnesium alloy continuous casting tandem rolling device, including the melting furnace being sequentially connected along rolling direction
1st, insulation standing furnace 2, preceding liquid case 3；Also include twin belt caster 4, hauling machine 6 and hot rolling mill unit；
Twin belt caster 4 includes opposed and synchronous rotary upper ring steel belt 410 and lower ring steel belt 420 up and down, on
Between ring steel belt 410 and lower ring steel belt 420 provided with adjustable berth away from two side plates 430, upper ring steel belt 410, lower ring
Enclose to form melt flow channel 440 between shape steel band 420 and two side plates 430, the front end of melt flow channel 440 forms charging aperture, its
Rear end forms discharging opening；The shape of two side plates 430 is cyclic structure, and they are socketed in the way of being slidably matched respectively
Between ring steel belt 410 and lower ring steel belt 420；When adjusting to predeterminated position, its lower end is fixed by locking mechanism.
The charging aperture of twin belt caster 4 is connected with the discharging opening of preceding liquid case 3, and its discharging opening passes through hauling machine 6 and hot rolling
The charging aperture connection of machine unit.
Twin belt caster 4 also include frame, rack-mounted PTO, PTO has upper
Under opposed upper output shaft 411 and lower output shaft 421, in frame and up and down opposed upper driving wheel 412 and lower driving
422 are taken turns, in frame and up and down opposed upper tensioning wheel 413 and lower tensioning wheel 423；Upper output shaft 411 and upper driving wheel
412 engagements, upper ring steel belt 410 is installed on driving wheel 412 and upper tensioning wheel 413；Lower output shaft 421 and lower driving wheel
422 engagements, lower ring steel belt 420 is installed on the lower driving wheel 422 and lower tensioning wheel 423.
Specifically, upper ring steel belt 410 and lower ring steel belt 420 are obliquely installed, in entering for vertical direction melt flow channel
The position of liquid mouthful is higher than the position of liquid outlet, and the output of magnesium plate is easy in so design；Upper driving wheel 412, on tensioning wheel 413,
Under the cooperation of lower driving wheel 422 and lower tensioning wheel 423, upper ring steel belt 410 and the synchronous continuous motion of lower ring steel belt 420, shape
Into dynamic runner.
The upper ring steel belt 410 of correspondence and lower ring steel belt 420 are respectively equipped with an electromagnetism sense at the gating location of frame
Answer heater 450., can be to steel in the case that both temperature difference are too big because the magnesium metal bath temperature come in from charging aperture is very high
The thermal shock of band, bends it, causes magnesium plate surface irregularity；By electromagnetic induction heater, 450 pairs come and go the steel rotated
Band is preheated, and reduces the temperature difference between steel band and magnesium metal bath, is mitigated thermal shock of the magnesium metal bath to steel band, is made it not
As for bending, so as to ensure the smooth of magnesium plate surface.
The middle part of upper driving wheel 412 and lower driving wheel 422 is respectively equipped with water inlet pipe 460；Upper ring steel belt 410 and lower annular
The back side of steel band 420 is respectively equipped with heat pipe cooling system 470.By so designing, enable to the temperature of magnesium metal bath by
Gradually decline, be finally frozen into magnesium plate strand so that the temperature difference between steel band and magnesium metal bath in controlled range, mitigates all the time
Thermal shock of the magnesium metal bath to steel band, make its be unlikely to bending, it is ensured that magnesium plate surface it is smooth.
The position of the upper ring steel belt 410 of correspondence and lower ring steel belt 420 is respectively equipped with five equally distributed branch in frame
Support roller.So design, ensure that the melt flow channel that high uniformity is formed between ring steel belt 410 and lower ring steel belt 420
440, it is further ensured that the smooth of magnesium plate surface.
Hot rolling mill unit includes five hot-rolling mills 7 being sequentially connected along rolling direction.
The thickness controller of the thickness for adjusting magnesium alloy casting embryo is additionally provided between twin belt caster 4 and hauling machine 6
5；The discharge end of hot rolling mill unit be additionally provided with the pinch roll 8 connected along rolling direction, cutter 9, coiling machine 10, conveyer belt 11,
Sheet piler 12, ejecting gear 13, so as to constitute continuous casting and rolling production line.
A kind of magnesium alloy continuous casting method for tandem rolling, comprises the following steps：
1) a kind of magnesium alloy continuous casting tandem rolling device is provided；
2) melt：The raw material magnesium alloy of default proportioning is added in melting furnace under conditions of 710-730 DEG C, is cooled to
700-720 DEG C, treat that magnesium alloy melts, obtain magnesium alloy fused mass；Specifically, when the temperature of melting furnace reaches 350 degrees Celsius, leading to
Enter N2、CO2、SF6Hybrid protection gas, generation diaphragm bulkfactor be 1.6.Using staged heating process, work as temperature
When reaching 730 DEG C, the alloy prepared is added in melting furnace, wherein, the mass percent of alloy formula composition is as follows：Al：
2.5-3.5, Si：0.08, Ca:0.04, Zn：0.6-1.4, Mn：0.2-1.0, Fe：0.003, Cu:0.01, Ni:0.001, Mg：It is remaining
Amount.After the alloy prepared adds melting furnace, 700 DEG C are cooled to, is purified using coarse filtration net, magnesium alloy fused mass is removed
Coarse impurities.
3) stand：Magnesium alloy fused mass is transferred to insulation standing furnace by melting furnace and stands 10-20min；In insulation standing furnace
Inside also magnesium alloy fused mass is filtered using smart screen pack, further the impurity of filtering magnesium alloy fused mass, it is ensured that magnesium alloy melts
The purity of body, and then improve the qualification rate of magnesium alloy finished product.
4) store：Liquid case storage before magnesium alloy fused mass through standing is transferred to；
5) cast：Inserted by a target seeker in melt flow channel, feed tip and the steel band gap about 0.3mm of preceding liquid case are led
Leader is 60-150mm with liquid outlet Front distance；The magnesium alloy fused mass in preceding liquid case is conveyed into double belt by target seeker to cast
The charging aperture of the melt flow channel of machine is made, magnesium alloy fused mass is cooled down in the melt flow channel in mobile status all the time so that
The surface temperature of magnesium alloy fused mass is down to less than 530 DEG C, so as to solidify to form magnesium alloy strand；
Open adjustment plate thickness and width before casting, the strand of different-thickness can be by adjusting the distance of lower bearing bracket on casting machine
Control, (thickness range 15-32mm, twin belt caster covering is more by adjusting the distance controlling of two side portion side block blocks for width
Model machine, adapts to 1000mm width, the requirement of 50mm thickness).By taking 20 × 1600mm (thickness × width) as an example, steel band leads to before casting
Electromagnetic induction heating is crossed to 250 DEG C.
Magnesium alloy fused mass enters before melt flow channel, with the method for electrostatic precipitation in upper ring steel belt and the table of lower ring steel belt
Face sprays the thick boron nitride of one layer of 21nm.It is easy to strand to be stripped.
It is passed through cooling water in water inlet pipe once to be cooled down, water-carrying capacity adjustable range is controlled in 3000-5000L/min,
Pressure 0.15-0.25MPa；Acetone is injected in the heat pipe of heat pipe cooling system and vacuumize process is carried out.
6) magnesium alloy fused mass is through thickness controller, and thickness controller is by drying N2With highly thermally conductive He mixed gas,
Flow 350L/min, plate form control instrument is equipped with thermal imaging temperature detection, it is found that certain regional temperature is abnormal on width, such as too high
When, the flow of area's blanketing gas can be tuned up, excessive temperature is lowered, to ensure the flatness of plate.
7) hot rolling：Magnesium alloy strand is conveyed into by hot rolling mill unit by hauling machine and carries out hot rolling, hot rolling magnesium alloy is obtained
Plate.The detailed process of hot rolling is as follows：450 DEG C of controlling hot rolling temperature level first, percentage pass reduction is 30% first；Next hot rolling control
Temperature processed is 420 DEG C, and percentage pass reduction is 10-15%；Third time controlling hot rolling temperature is 380 DEG C, and percentage pass reduction is 10%；
Fourth, fifth controlling hot rolling temperature is 380 DEG C, and percentage pass reduction is 5%.
8) final hot rolling magnesium alloy plate thickness is 9.5mm, and board-like through cutting to length machine, shearing is delivered to pile through conveyer belt
Trigger, completes pile plate operation；
9) rolling is through coiling machine automatic rolling, and internal diameter is ф 610, external diameter max ф 1650mm, then takes volume by ejecting gear,
Complete continuous casting and rolling process.By follow-up offline cold/warm rolling mill practice, plurality of specifications sheet material is fully met.
The present invention can realize continuous casting and rolling online production, with reference to casting abbreviated system, save in hot rolling cogging technique
The process such as strand, milling face, cogging.By follow-up cold/warm-rolling system, plurality of specifications sheet material, product quality and heat are fully met
Roll cogging to approach, lumber recovery brings up to more than 50%, mill length can be controlled from existing 25%, is that follow-up stove rolling is rolled
Technique processed provides guarantee, realizes that scale magnesium alloy board rolls.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (10)
1. a kind of magnesium alloy continuous casting tandem rolling device, including be sequentially connected along rolling direction melting furnace, insulation standing furnace, preceding liquid
Case；Characterized in that, also including twin belt caster, hauling machine and hot rolling mill unit；
The twin belt caster includes opposed and synchronous rotary upper ring steel belt and lower ring steel belt, the upper annular up and down
Between steel band and the lower ring steel belt provided with adjustable berth away from two side plates, the upper ring steel belt, lower ring steel belt and
Enclose to form melt flow channel between two side plates, the front end of the melt flow channel forms charging aperture, and its rear end forms discharging opening；
The charging aperture of the twin belt caster is connected with the discharging opening of preceding liquid case, its discharging opening by the hauling machine with it is described
The charging aperture connection of hot rolling mill unit.
2. magnesium alloy continuous casting tandem rolling device according to claim 1, it is characterised in that the twin belt caster also includes
Frame, rack-mounted PTO, PTO has upper output shaft and lower output shaft opposed up and down,
Opposed upper driving wheel and lower driving wheel in frame and up and down, in frame and up and down opposed upper tensioning wheel and
Lower tensioning wheel；The upper output shaft is engaged with upper driving wheel, and the upper ring steel belt is installed on the upper driving wheel and upper tensioning
On wheel；The lower output shaft is engaged with lower driving wheel, and the lower ring steel belt is installed on the lower driving wheel and lower tensioning wheel.
3. magnesium alloy continuous casting tandem rolling device according to claim 2, it is characterised in that at the gating location of the frame
Ring steel belt and lower ring steel belt are respectively equipped with an electromagnetic induction heater in correspondence.
4. magnesium alloy continuous casting tandem rolling device according to claim 2, it is characterised in that the upper driving wheel and lower driving wheel
Middle part be respectively equipped with water inlet pipe；The back side of the upper ring steel belt and lower ring steel belt is respectively equipped with heat pipe cooling system.
5. magnesium alloy continuous casting tandem rolling device according to claim 2, it is characterised in that the upper annular steel of correspondence in the frame
The position of band and lower ring steel belt is respectively equipped with five equally distributed support rollers.
6. magnesium alloy continuous casting tandem rolling device according to claim 1, it is characterised in that the hot rolling mill unit includes five
The hot-rolling mill being sequentially connected along rolling direction.
7. magnesium alloy continuous casting tandem rolling device according to claim 1, it is characterised in that the twin belt caster and traction
The thickness controller of the thickness for adjusting magnesium alloy casting embryo is additionally provided between machine；The discharge end of the hot rolling mill unit is additionally provided with
Pinch roll, cutter, coiling machine, conveyer belt, sheet piler, the ejecting gear connected along rolling direction, so as to constitute continuous casting and rolling life
Producing line.
8. a kind of magnesium alloy continuous casting method for tandem rolling, it is characterised in that comprise the following steps：
1) a kind of magnesium alloy continuous casting tandem rolling device as described in claim 1-7 any one is provided；
2) melt：The raw material magnesium alloy of default proportioning is added in melting furnace under conditions of 710-730 DEG C, cooled after alloying
To 700-720 DEG C, magnesium alloy fused mass is obtained；
3) stand：Magnesium alloy fused mass is transferred to insulation standing furnace by melting furnace and stands preset time；
4) store：Liquid case storage before magnesium alloy fused mass through standing is transferred to；
5) cast：The distance of two blocks of side plates of twin belt caster is adjusted to predetermined width；By the magnesium alloy fused mass in preceding liquid case
The charging aperture of the melt flow channel of twin belt caster is conveyed into, magnesium alloy fused mass is in the melt flow channel of mobile status all the time
Cooled down so that the surface temperature of magnesium alloy fused mass is down to less than 550 DEG C, so as to solidify to form magnesium alloy strand；
6) hot rolling：Magnesium alloy strand is conveyed into by hot rolling mill unit by hauling machine and carries out hot rolling, hot rolling magnesium alloy plate is obtained.
9. magnesium alloy continuous casting method for tandem rolling according to claim 8, it is characterised in that step 5) in, magnesium alloy fused mass enters
Enter before melt flow channel, with the method for electrostatic precipitation in nitrogen thick one layer of 21nm of surface spraying of upper ring steel belt and lower ring steel belt
Change boron；It is passed through cooling water in water inlet pipe once to be cooled down, water-carrying capacity adjustable range is controlled in 3000-5000L/min, pressure
0.15-0.25MPa；Acetone is injected in the heat pipe of heat pipe cooling system and vacuumize process is carried out.
10. magnesium alloy continuous casting method for tandem rolling according to claim 8, it is characterised in that step 6) in, the specific mistake of hot rolling
Journey is as follows：450 DEG C of controlling hot rolling temperature level first, percentage pass reduction is 30% first；Next controlling hot rolling temperature is 420 DEG C,
Percentage pass reduction is 10-15%；Third time controlling hot rolling temperature is 380 DEG C, and percentage pass reduction is 10%；Fourth, fifth hot rolling
It is 380 DEG C to control temperature, and percentage pass reduction is 5%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108031713A (en) * | 2017-12-23 | 2018-05-15 | 蓝婷 | A kind of continuous casting continuous rolling equipment |
| CN108405616A (en) * | 2018-03-07 | 2018-08-17 | 黑龙江工程学院 | A kind of preparation method and equipment of the magnesium alloy materials continuous casting and rolling of ultrasonic wave auxiliary |
| CN109421160A (en) * | 2017-08-21 | 2019-03-05 | 北新集团建材股份有限公司 | A kind of dalle preparation facilities |
| CN110899644A (en) * | 2018-09-14 | 2020-03-24 | 宝山钢铁股份有限公司 | Production method of ultrathin hot rolled strip steel |
| CN111922081A (en) * | 2019-06-26 | 2020-11-13 | 太原科技大学 | Continuous casting-rolling and rolling short-process preparation method of special-shaped magnesium alloy section |
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| CN108405616A (en) * | 2018-03-07 | 2018-08-17 | 黑龙江工程学院 | A kind of preparation method and equipment of the magnesium alloy materials continuous casting and rolling of ultrasonic wave auxiliary |
| CN110899644A (en) * | 2018-09-14 | 2020-03-24 | 宝山钢铁股份有限公司 | Production method of ultrathin hot rolled strip steel |
| CN111922081A (en) * | 2019-06-26 | 2020-11-13 | 太原科技大学 | Continuous casting-rolling and rolling short-process preparation method of special-shaped magnesium alloy section |
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