CN105290108A - Magnesium alloy sheet strip coupling and deformation combined rolling system and rolling method thereof - Google Patents
Magnesium alloy sheet strip coupling and deformation combined rolling system and rolling method thereof Download PDFInfo
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- CN105290108A CN105290108A CN201510855324.8A CN201510855324A CN105290108A CN 105290108 A CN105290108 A CN 105290108A CN 201510855324 A CN201510855324 A CN 201510855324A CN 105290108 A CN105290108 A CN 105290108A
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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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/30—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 plates, strips, bands or sheets of indefinite length in a non-continuous process
- B21B1/32—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 plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
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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
- B21B1/40—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 foils which present special problems, e.g. because of thinness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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Abstract
The invention relates to a magnesium alloy sheet strip coupling and deformation combined rolling system and a rolling method thereof, and mainly solves the technical problems of strong mechanical anisotropy, bad plate shape and edge crack defects and low yield of rolled magnesium alloy sheet strips in a traditional rolling process and low production efficiency in an equal channel angular rolling method. The magnesium alloy sheet strip coupling and deformation combined rolling system consists of two uncoiling-coiling machines, two five-roller shearing and bending large deformation adjusting devices, two three-roller straightening machines, two roller clamping and feeding devices and a six-roller reversible rolling machine, wherein the uncoiling-coiling machines, the five-roller shearing and bending large deformation adjusting devices, the three-roller straightening machines and the roller clamping and feeding devices are arranged at the front and back edges of the six-roller reversible rolling machine in sequence to realize reciprocating rolling of magnesium alloy sheet strips. The rolling method of the rolling system comprises the following steps: the reciprocating rolling is performed for uncoiled magnesium alloy strip coils in sequence through the equipment; and the system is stopped when the finished product rolling is finally finished.
Description
Technical field
The present invention relates to a kind of magnesium alloy thin plate and band Coupling Deformation combination rolling system and milling method thereof, it belongs to a kind of rolling magnesium alloy sheet equipment and milling method thereof.
Background technology
The traditional Rolling Production mode of magnesium alloy board mostly is multi-pass tandem rolling or the reciprocal rolling of single chassis, and reciprocal rolling can be enhanced productivity greatly.But full axial rolling causes and rolls rear magnesium strip and show strong Anisotropy, follow-up deep processing is caused to be difficult to carry out; Existing scholar's research goes out equal channel angular rolling method, the method is a kind of milling method that can realize continuous confined strip shearing, the grain orientation of magnesium alloy plate can be made to be non-basal plane orientation by basal plane orientation transition, and then to provide more slip system for magnesium alloy, can greatly improve its plastic deformation ability.Magnesium plate Anisotropy tool after equal channel angular rolling is significantly improved, however due to magnesium alloy heat radiation fast, all need to melt down after every time rolling completes to reheat.Simultaneously due to the special process at isometrical angle, tandem rolling or reversible reciprocal rolling cannot be realized, greatly constrain the production efficiency of equal channel angular rolling thus.In addition, the sliding-frictional resistance being subject to mould in magnesium plate detrusion process can cause the defect of Instability wrinkling and crackle, and magnesium plate is subject to mould bend in one direction, causes the residual stress distribution of rolling rear magnesium plate uneven, is easy to occur the defects such as plate shape wave.
Summary of the invention
The object of the invention is to solve rolling that traditional rolling mill practice exists rear magnesium alloy thin plate and band Anisotropy is strong, plate shape and limit split the low technical problem of defect is serious, lumber recovery is low and equal channel angular rolling method exists production efficiency, provide a kind of magnesium alloy thin plate and band Coupling Deformation to combine rolling system and milling method thereof.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of magnesium alloy thin plate and band Coupling Deformation combination rolling system, it is by two uncoiling-coiling machines, two five roller shear-bow large deformation adjustable apparatus, two three-roll unbenders, two pinch roll apparatus and six roll reversing rollers composition, First uncoiling-coiling machine, First five roller shear-bow large deformation adjustable apparatus, First three-roll unbender and First pinch roll apparatus are sequentially arranged on the front of six roll reversing rollers, second pinch roll apparatus, second three-roll unbender, second five roller shear-bow large deformation adjustable apparatus and second uncoiling-coiling machine are sequentially arranged on the back of six roll reversing rollers, realize reciprocal rolling magnesium alloy thin plate and band.
Described two uncoiling-coiling machines, two five roller shear-bow large deformation adjustable apparatus, two three-roll unbenders, two pinch roll apparatus and six roll reversing rollers are all provided with heating temperatures and temperature-detecting device.
A kind of milling method using above-mentioned magnesium alloy thin plate and band Coupling Deformation to combine rolling system, first magnesium alloy strip coil after bell type heating furnace preheating is opened by First uncoiling-coiling machine by it, magnesium alloy strip coil after uncoiling applies the predeformation before rolling by First five roller shear-bow large deformation adjustable apparatus to sheet metal thickness direction, the magnesium alloy strip coil of predeformation enters First three-roll unbender and aligns, magnesium alloy strip coil after aligning enters six roll reversing rollers via First pinch roll apparatus and is rolled, magnesium alloy strip after rolling is sent into second three-roll unbender via second pinch roll apparatus and is carried out curling front aligning again, enter afterwards second five roller shear-bow large deformation adjustable apparatus be rolled after redeformation, finally enter second uncoiling-coiling machine to batch, when First uncoiling-coiling machine tape coil diameter detection device detects that residue last 2 is enclosed, equipment stops completely, start antiport, carry out the reverse rolling of magnesium alloy strip coil, shut down until finally complete finished product rolling.
Described five roller shear-bow large deformation adjustable apparatus are made up of two roller predeformation unit moving up and down and fixing turriform three roller redeformation unit, by the angle θ moving up and down adjustment shear-bow distortion of two roller predeformation unit, the scope of θ is 90 ~ 120 °.
Owing to present invention employs technique scheme, solve rolling that existing rolling mill practice exists rear magnesium alloy thin plate and band Anisotropy is strong, plate shape and limit split the low technical problem of defect is serious, lumber recovery is low and equal channel angular rolling method exists production efficiency.Therefore, compared with background technology, the advantage that the present invention has and progress are:
1) the five roller shear-bow large deformation adjustable apparatus arranged before and after milling train apply rolling predeformation and redeformation to sheet material.This Coupling Deformation mode can effectively induce sheet material generation detrusion to stretch twin and dynamic recrystallization forming core, be conducive to regulating and controlling tissue and the texture structure of magnesium alloy, reach and weaken basal plane texture, crystal grain thinning, reduction anisotropy and plate shape wave, and crack defect.
2) applying detrusion by turriform three roller redeformation unit rotational (between plate roller for rolling friction), effectively overcoming equal channel angular rolling deforming moulds place because being sliding friction between plate roller, cause thin plate rolling to occur the defect of unstability, wrinkling and crackle.
3) turriform three roller redeformation unit have employed the tower rollers structure of multiple roll combination, solves its rigidity, the low structure problem that bearing cannot be adopted to support of intensity.
4) five roller shear-bow large deformation adjustable apparatus effectively overcome that plate face micro-crack defect appears in current magnesium alloy plate asymmetrical rolling because roller speed ratio matching is improper, grain refinement, texture type change and the problem such as basal plane texture attenuation is not enough.
5) the present invention possesses the high efficiency of reversible reciprocal rolling and the anisotropic advantage of improvement magnesium plate of equal channel angular rolling simultaneously and overcomes the deficiency of two kinds of techniques.Achieve the unification of reversible reciprocal rolling and equal channel angular rolling, substantially increase and roll rear magnesium plate performance and production efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention;
Fig. 2 is the present invention five roller shear-bow large deformation adjustable apparatus structure principle chart.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of magnesium alloy thin plate and band Coupling Deformation combination rolling system in the present embodiment, it is by two uncoiling-coiling machines 1, 9, two five roller shear-bow large deformation adjustable apparatus 2, 8, two three-roll unbenders 3, 7, two pinch roll apparatus 4, 6 and six roll reversing roller 5 form, First uncoiling-coiling machine 1, First five roller shear-bow large deformation adjustable apparatus 2, First three-roll unbender 3 and First pinch roll apparatus 4 are sequentially arranged on the front of six roll reversing rollers 5, second pinch roll apparatus 6, second three-roll unbender 7, second five roller shear-bow large deformation adjustable apparatus 8 and second uncoiling-coiling machine 9 are sequentially arranged on the back of six roll reversing rollers 5, realize reciprocal rolling magnesium alloy thin plate and band.
Described two uncoiling-coiling machines 1,9, two five roller shear-bow large deformation adjustable apparatus, 2,8, two three-roll unbenders 3,7, two pinch roll apparatus 4,6 and six roll reversing rollers 5 are all provided with heating temperatures and temperature-detecting device.
A kind of milling method using above-mentioned magnesium alloy thin plate and band Coupling Deformation to combine rolling system, first magnesium alloy strip coil after bell type heating furnace preheating is opened by First uncoiling-coiling machine 1 by it, magnesium alloy strip coil after uncoiling applies the predeformation before rolling by First five roller shear-bow large deformation adjustable apparatus 2 pairs of sheet metal thickness directions, the magnesium alloy strip coil of predeformation enters First three-roll unbender 3 and aligns, magnesium alloy strip coil after aligning enters six roll reversing rollers 5 via First pinch roll apparatus 4 and is rolled, magnesium alloy strip after rolling is sent into second three-roll unbender 7 via second pinch roll apparatus 6 and is carried out curling front aligning again, enter afterwards second five roller shear-bow large deformation adjustable apparatus 8 be rolled after redeformation, finally enter second uncoiling-coiling machine 9 to batch, when First uncoiling-coiling machine tape coil diameter detection device detects that residue last 2 is enclosed, equipment stops completely, start antiport, carry out the reverse rolling of magnesium alloy strip coil, shut down until finally complete finished product rolling.
Above-mentioned five roller shear-bow large deformation adjustable apparatus 2 and 8 are made up of two roller predeformation unit moving up and down and fixing turriform three roller redeformation unit, by the angle θ moving up and down adjustment shear-bow distortion of two roller predeformation unit, the scope of θ is 90 ~ 120 °.
Claims (5)
1. a magnesium alloy thin plate and band Coupling Deformation combination rolling system, it is characterized in that: it is by two uncoiling-coiling machines, two five roller shear-bow large deformation adjustable apparatus, two three-roll unbenders, two pinch roll apparatus and six roll reversing rollers composition, First uncoiling-coiling machine, First five roller shear-bow large deformation adjustable apparatus, First three-roll unbender and First pinch roll apparatus are sequentially arranged on the front of six roll reversing rollers, second pinch roll apparatus, second three-roll unbender, second five roller shear-bow large deformation adjustable apparatus and second uncoiling-coiling machine are sequentially arranged on the back of six roll reversing rollers, realize reciprocal rolling magnesium alloy thin plate and band.
2. magnesium alloy thin plate and band Coupling Deformation combination rolling system according to claim 1, is characterized in that: described two uncoiling-coiling machines, two five roller shear-bow large deformation adjustable apparatus, two three-roll unbenders, two pinch roll apparatus and six roll reversing rollers are all provided with heating temperatures and temperature-detecting device.
3. magnesium alloy thin plate and band Coupling Deformation combination rolling system according to claim 1 and 2, it is characterized in that: described five roller shear-bow large deformation adjustable apparatus are made up of two roller predeformation unit moving up and down and fixing turriform three roller redeformation unit, by the angle θ moving up and down adjustment shear-bow distortion of two roller predeformation unit, the scope of θ is 90 ~ 120 °.
4. one kind uses the milling method of the magnesium alloy thin plate and band Coupling Deformation combination rolling system described in claim 1, it is characterized in that: first by First uncoiling-coiling machine, the magnesium alloy strip coil after bell type heating furnace preheating is opened, magnesium alloy strip coil after uncoiling applies the predeformation before rolling by First five roller shear-bow large deformation adjustable apparatus to sheet metal thickness direction, the magnesium alloy strip coil of predeformation enters First three-roll unbender and aligns, magnesium alloy strip coil after aligning enters six roll reversing rollers via First pinch roll apparatus and is rolled, magnesium alloy strip after rolling is sent into second three-roll unbender via second pinch roll apparatus and is carried out curling front aligning again, enter afterwards second five roller shear-bow large deformation adjustable apparatus be rolled after redeformation, finally enter second uncoiling-coiling machine to batch, when First uncoiling-coiling machine tape coil diameter detection device detects that residue last 2 is enclosed, equipment stops completely, start antiport, carry out the reverse rolling of magnesium alloy strip coil, shut down until finally complete finished product rolling.
5. milling method according to claim 4, it is characterized in that: described five roller shear-bow large deformation adjustable apparatus are made up of two roller predeformation unit moving up and down and fixing turriform three roller redeformation unit, by the angle θ moving up and down adjustment shear-bow distortion of two roller predeformation unit, the scope of θ is 90 ~ 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510855324.8A CN105290108B (en) | 2015-11-30 | 2015-11-30 | A kind of magnesium alloy thin plate and band Coupling Deformation combines rolling system and its milling method |
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| CN201510855324.8A CN105290108B (en) | 2015-11-30 | 2015-11-30 | A kind of magnesium alloy thin plate and band Coupling Deformation combines rolling system and its milling method |
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| CN105290108A true CN105290108A (en) | 2016-02-03 |
| CN105290108B CN105290108B (en) | 2017-07-07 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052047A (en) * | 2017-05-27 | 2017-08-18 | 天津中能锂业有限公司 | A kind of production method of ultrathin metal lithium strip |
| CN108296286A (en) * | 2018-01-02 | 2018-07-20 | 中南大学 | A kind of continuous reversible deep cooling rolling mill practice preparing high-performing car aluminium alloy strips and equipment |
| CN108817133A (en) * | 2018-04-17 | 2018-11-16 | 河南明镁镁业科技有限公司 | A kind of magnesium alloy texture weakening apparatus and method |
| CN110788134A (en) * | 2019-09-27 | 2020-02-14 | 太原科技大学 | Warm rolling-ultralow temperature cold rolling production process for magnesium alloy sheet |
| CN111633058A (en) * | 2020-05-14 | 2020-09-08 | 太原科技大学 | Plate straightening method and system |
| CN113118213A (en) * | 2021-04-16 | 2021-07-16 | 上海五星铜业股份有限公司 | Uniform-tension rolling method |
| CN115647053A (en) * | 2022-12-07 | 2023-01-31 | 河北纵横集团丰南钢铁有限公司 | Finishing mill group |
| CN117564084A (en) * | 2024-01-17 | 2024-02-20 | 太原科技大学 | Magnesium alloy sheet and asynchronous angle rolling combination rolling process for improving anisotropy of magnesium alloy sheet |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052047A (en) * | 2017-05-27 | 2017-08-18 | 天津中能锂业有限公司 | A kind of production method of ultrathin metal lithium strip |
| CN108296286A (en) * | 2018-01-02 | 2018-07-20 | 中南大学 | A kind of continuous reversible deep cooling rolling mill practice preparing high-performing car aluminium alloy strips and equipment |
| CN108817133A (en) * | 2018-04-17 | 2018-11-16 | 河南明镁镁业科技有限公司 | A kind of magnesium alloy texture weakening apparatus and method |
| CN110788134A (en) * | 2019-09-27 | 2020-02-14 | 太原科技大学 | Warm rolling-ultralow temperature cold rolling production process for magnesium alloy sheet |
| CN110788134B (en) * | 2019-09-27 | 2021-05-25 | 太原科技大学 | Warm rolling-ultralow temperature cold rolling production process for magnesium alloy ultrathin plate |
| CN111633058B (en) * | 2020-05-14 | 2022-05-31 | 太原科技大学 | Plate straightening method and system |
| CN111633058A (en) * | 2020-05-14 | 2020-09-08 | 太原科技大学 | Plate straightening method and system |
| CN113118213A (en) * | 2021-04-16 | 2021-07-16 | 上海五星铜业股份有限公司 | Uniform-tension rolling method |
| CN113118213B (en) * | 2021-04-16 | 2023-03-03 | 上海五星铜业股份有限公司 | Rolling method capable of realizing uniform tension distribution |
| CN115647053A (en) * | 2022-12-07 | 2023-01-31 | 河北纵横集团丰南钢铁有限公司 | Finishing mill group |
| CN115647053B (en) * | 2022-12-07 | 2023-03-21 | 河北纵横集团丰南钢铁有限公司 | Finishing mill group |
| CN117564084A (en) * | 2024-01-17 | 2024-02-20 | 太原科技大学 | Magnesium alloy sheet and asynchronous angle rolling combination rolling process for improving anisotropy of magnesium alloy sheet |
| CN117564084B (en) * | 2024-01-17 | 2024-04-26 | 太原科技大学 | Magnesium alloy sheet and asynchronous angle rolling combination rolling process for improving anisotropy of magnesium alloy sheet |
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| CN105290108B (en) | 2017-07-07 |
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