CN104862627A - Method for improving stamping performance of magnesium alloy sheet by continuous bending - Google Patents
Method for improving stamping performance of magnesium alloy sheet by continuous bending Download PDFInfo
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- CN104862627A CN104862627A CN201510332444.XA CN201510332444A CN104862627A CN 104862627 A CN104862627 A CN 104862627A CN 201510332444 A CN201510332444 A CN 201510332444A CN 104862627 A CN104862627 A CN 104862627A
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Abstract
The invention relates to a method for improving stamping performance of a magnesium alloy sheet by continuous bending. The method is used for putting the magnesium alloy sheet into a continuous bending mould to conduct continuous bending deformation on the magnesium alloy sheet, and comprises the following steps: putting the magnesium alloy sheet into the continuous bending mould, wherein in the continuous bending mould, bending ejector headers are respectively mounted on a base block and a sliding block, the bending ejector headers on the base block and the sliding block are alternately arranged, and the number of the bending ejector headers on the base block and the number of the bending ejector headers on the sliding block are different by one or equal; placing the magnesium alloy sheet at the top ends of the bending ejector headers; pressing the sliding block to ensure that the bending ejector headers of the sliding block get in contact with the upper surface of the magnesium alloy sheet; then continuously pressing the sliding block to ensure that a bending angle theta being greater than or equal to 90 degrees and less than 180 degrees is formed in the magnesium alloy sheet; pulling or rolling one end of the sheet at constant speed, enabling the sheet to move in one direction to realize continuous and repeated bending deformation of the magnesium alloy sheet in the upper direction and the lower direction, and then conducting annealing treatment on the magnesium alloy sheet.
Description
Technical field
The invention belongs to nonferrous materials plastic working field, be specifically related to a kind of method that continuous bend improves magnesium alloy sheet punching performance.
Background technology
Magnesium alloy has that quality is light, specific tenacity and the series of advantages such as specific rigidity is high, thermal conductivity is good and electromagnetic shielding capability is strong, has broad application prospects in fields such as track traffic, electronic information, aerospace and defence and militaries.Magnesium-alloy material is based on cast member particularly die casting, but cast magnesium alloys exists the shortcoming such as coarse grains, poor, the easy generation defect of mechanical property, greatly limit the application of magnesium alloy.Compared with cast magnesium alloys, deformed magnesium alloy material has more development prospect, can various plate, rod, pipe, forging and the product forms of production specification by distortion, and can the control of material structure and the application of thermal treatment process be passed through, obtain the intensity higher than casting magnesium alloy material, better ductility, thus the needs meeting various structural part.But magnesium alloy has the crystalline structure of close-packed hexagonal, stronger basal plane texture is easily formed when rolling and extruding, a main slip plane and two basal slip systems are only had to start under room temperature, and a small amount of { the 10-12} conical surface is twin, the quantity of the deformation mechanism started is much smaller than Von-Mises yield criteria: metal needs wants 5 independently slip system compatible deformations, and therefore at room temperature plastic deformation ability is poor for magnesium alloy.
Research shows, effectively can be controlled (0001) basal plane orientation and the texture controlling of magnesium alloy by suitable complete processing, can produce texture and soften, and basal slip is started and is more prone to, thus improve its plasticity, improve its forming property.But existing complete processing is as the still Shortcomings such as unidirectional multi-pass bending process, can not realize the continuous prodution of magnesium alloy sheet, production efficiency is low, limits its industrial applications.Therefore the invention provides a kind of method that continuous bend improves magnesium alloy sheet forming property, not only can improve the forming property of magnesium alloy sheet, can also realize continuous prodution, efficiency is high, and can realize automatic production.
Summary of the invention
In view of this, a kind of continuous bend is the object of the present invention is to provide to improve the method for magnesium alloy sheet punching performance, by magnesium alloy sheet is carried out continuous bend distortion make magnesium alloy plate thin plate be subject to repeated stress be used for control texture, thus reach the object improving Mg alloy formed performance.
For achieving the above object, the invention provides following technical scheme:
A kind of continuous bend improves the method for magnesium alloy sheet punching performance, being placed in by magnesium alloy sheet on sole piece and slide block is separately installed with in the bending continuous bend mould come directly towards, bending top on sole piece and slide block is staggered, pressure slide block, slide block moves down along connecting rod, the bending top of slide block is contacted with magnesium alloy sheet upper surface, the bending top of sole piece contacts with magnesium alloy sheet lower surface, then continuing pressure slide block makes magnesium alloy sheet present angle of bend θ, 90 °≤θ < 180 °, then/scrolling thin plate one end is drawn with constant rate of speed, thin plate pull-out mould is designated as a time, then magnesium alloy sheet is aligned and anneal.
Preferably, thin plate is repeated to be positioned in bending mould realize the distortion of magnesium alloy sheet more than 2 times passages.
Preferably, after distortion completes, carry out anneal, or between passage distortion, anneal is carried out to magnesium alloy sheet.
Preferably, when carrying out anneal after distortion, annealing temperature is 260-450 DEG C, and annealing time is 30 ~ 120 minutes, and when carrying out anneal to magnesium alloy sheet between passage distortion, annealing temperature is 260 ~ 400 DEG C, and annealing time is 30 ~ 60 minutes.
Preferably, described continuous bend mould sole piece identical with the bending top number on slide block or difference one.
Preferably, the bending top number of slide block is 4, and the bending top number of sole piece is 5.
Preferably, in BENDING PROCESS, thin plate drives speed to be 2.9m/min.
Preferably, described contact part adopts oil lubrication.
Beneficial effect of the present invention is: 1) the present invention is by carrying out continuous bend test to magnesium alloy sheet, the effect making the upper and lower surface of magnesium alloy sheet be subject to tensile stress and stress to replace; Because in BENDING PROCESS, the internal surface of sheet material receives stress, easy generation { 10-12} stretching twin, outside surface is subject to tensile stress, controlled by non-basal slip, then during reverse bending, surfaces externally and internally exchanges, stressed condition is exchanged, due to { the polarity of 10-12} stretching twin, twin phenomenon is moved back when being subject to contrary power, due to twin, slippage and move back twin interaction and cause the basal plane texture of thin plate to weaken.Therefore, the present invention weakens the basal plane texture of magnesium alloy sheet by continuous bend technology, reaches the object of the ability of the forming property improving magnesium alloy sheet, solves the problem that existing magnesium alloy sheet causes its plastic deformation ability poor compared with strong basis plane texture; 2) the present invention can be used for continuous prodution, and efficiency is high, and can realize automatization.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is the structural representation of bending mould magnesium alloy sheet being carried out to continuous bend distortion, wherein 1. continuous bend mould, 2. magnesium alloy sheet, 3. sole piece, 4. slide blocks, 5. bending top, 6. connecting rod, 7. pressure screw, 8. motor;
Fig. 2 is bending top partial enlarged drawing, and wherein ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet of bending top;
In Fig. 3, (a) is without diastrophic magnesium alloy sheet basal plane pole figure, and (b) is through diastrophic magnesium alloy sheet basal plane pole figure;
In Fig. 4, (a) is the cupping sample without diastrophic magnesium alloy sheet, and (b) is the cupping sample through diastrophic magnesium alloy sheet.
Embodiment
Embodiment 1
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 4 bending tops, sole piece is provided with 5 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 3.2mm downwards, the angle of bend of thin plate is made to be 160 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet of bending top.Then open motor 8, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 8 times, namely upwards 4 times, downward 4 times.Then carry out anneal to magnesium alloy sheet, annealing temperature is 350 DEG C, and annealing time is 60 minutes.
In Fig. 3, (a) is without diastrophic magnesium alloy sheet basal plane pole figure, and (b) is for through magnesium alloy sheet basal plane pole figure diastrophic described in embodiment 1; Original magnesium alloy sheet is typical basal plane texture as can be seen from Figure 3, and crystal grain c-axis mainly concentrates on gauge of sheet direction, and after embodiment 1, basal plane texture intensity obviously reduces, and the c-axis of portion crystal oppositely deflects to rolling.
After embodiment 1, the yield strength of magnesium alloy sheet is reduced to 135Mpa from 159Mpa, plastic strain ratio r is down to 1.60 from 2.80, work hardening exponent n is increased to 0.29 from 0.25, unit elongation is increased to 14.6% from 12.3%, in Fig. 4, (a) is the cupping sample without diastrophic magnesium alloy sheet, b () is the cupping sample through diastrophic magnesium alloy sheet, Erichsen number is increased to 5.2mm from 3.7mm as can be seen from Figure 4, and plastic deformation ability is significantly improved.
Embodiment 2
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 4 bending tops, sole piece is provided with 5 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 5.8mm downwards, the angle of bend of thin plate is made to be 146 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet of bending top.Then open motor 8, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 8 times, namely upwards 4 times, downward 4 times.Then carry out anneal to magnesium alloy sheet, annealing temperature is 350 DEG C, and annealing time is 60 minutes.After continuous bend distortion, the Erichsen number of magnesium alloy sheet rises to 5.5mm from 3.7mm, and forming property is significantly improved.
Embodiment 3
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 3 bending tops, sole piece is provided with 4 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 5.8mm downwards, the angle of bend of thin plate is made to be 146 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is patrix bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet that patrix bends top.Then open motor 7, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 6 times, namely upwards 3 times, downward 3 times.Then carry out anneal to magnesium alloy sheet, annealing temperature is 450 DEG C, and annealing time is 60 minutes.After continuous bend distortion, the Erichsen number of magnesium alloy sheet rises to 3.6mm from 2.3mm, and forming property is significantly improved.
Embodiment 4
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 3 bending tops, sole piece is provided with 4 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 8.3mm downwards, the angle of bend of thin plate is made to be 135 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is patrix bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet that patrix bends top.Then open motor 7, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 6 times, namely upwards 3 times, downward 3 times.Then carry out anneal to magnesium alloy sheet, annealing temperature is 450 DEG C, and annealing time is 60 minutes.After continuous bend distortion, the Erichsen number of magnesium alloy sheet rises to 4.0mm from 2.3mm, and forming property is significantly improved.
Embodiment 5
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 2 bending tops, sole piece is provided with 3 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 5.8mm downwards, the angle of bend of thin plate is made to be 146 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is patrix bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet that patrix bends top.Then open motor 7, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 4 times, namely upwards 2 times, downward 2 times.Then carry out anneal to magnesium alloy sheet, annealing temperature is 260 DEG C, and annealing time is 60 minutes.After continuous bend distortion, the Erichsen number of magnesium alloy sheet rises to 3.3mm from 2.3mm, and forming property is significantly improved.
Embodiment 6
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 2 bending tops, sole piece is provided with 3 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 10.0mm downwards, the angle of bend of thin plate is made to be 126 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is patrix bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet that patrix bends top.Then open motor 7, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 4 times, namely upwards 2 times, downward 2 times.Then carry out anneal to magnesium alloy sheet, annealing temperature is 260 DEG C, and annealing time is 60 minutes.After continuous bend distortion, the Erichsen number of magnesium alloy sheet rises to 3.8mm from 2.3mm, and forming property is significantly improved.
Embodiment 7
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 2 bending tops, sole piece is provided with 3 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 10.0mm downwards, the angle of bend of thin plate is made to be 126 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is patrix bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet that patrix bends top.Then open motor 7, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 4 times, namely upwards 2 times, downward 2 times.Be 1 passage after sheet material pull-out mould, then carry out the 2nd passage continuous bend, middle without annealing.Then carry out anneal to magnesium alloy sheet, annealing temperature is respectively 260 DEG C, 300 DEG C, 400 DEG C and 450 DEG C, and annealing time is 60 minutes.After continuous bend distortion, the Erichsen number of magnesium alloy sheet rises to 5.1mm respectively from 2.3mm, and 5.0mm, 5.3mm and 5.2mm forming property is significantly improved.
Embodiment 8
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 2 bending tops, sole piece is provided with 3 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 10mm downwards, the angle of bend of thin plate is made to be 126 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is patrix bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet that patrix bends top.Then open motor 7, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 4 times, namely upwards 2 times, downward 2 times.Be 1 passage after sheet material pull-out mould, then carry out the 2nd passage continuous bend, middle 260 DEG C of annealing 30 minutes.Then carry out anneal to magnesium alloy sheet, annealing temperature is 260 DEG C, and annealing time is 60 minutes.After continuous bend distortion, the Erichsen number of magnesium alloy sheet rises to 5.1mm from 2.3mm, and forming property is significantly improved.
Embodiment 9
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 2 bending tops, sole piece is provided with 3 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 10.0mm downwards, the angle of bend of thin plate is made to be 126 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is patrix bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet that patrix bends top.Then open motor 7, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 4 times, namely upwards 2 times, downward 2 times.Be 1 passage after sheet material pull-out mould, then carry out 2nd ~ 4 passage continuous bend, middle without annealing.Then carry out anneal to magnesium alloy sheet, annealing temperature is 450 DEG C, and annealing time is 60 minutes.After continuous bend distortion, the Erichsen number of magnesium alloy sheet rises to 5.2mm respectively from 2.3mm, and 4.8mm, 4.7mm forming property is all significantly improved.
Embodiment 10
1 explanation by reference to the accompanying drawings, the magnesium alloy sheet 2 of band shape is placed in continuous bend mould 1, slide block is provided with 2 bending tops, sole piece is provided with 3 bending tops, magnesium alloy sheet 2 and continuous bend mould 1 contact part are lubricated with lubricant, and magnesium alloy sheet 2 is placed in the top that sole piece bends top 5, rotate pressure screw 7, slide block moves down along connecting rod 6, makes bending of slide block come directly towards 5 and contacts with the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate pressure screw 7 and depress 11.5mm downwards, the angle of bend of thin plate is made to be 120 °, wherein the angle figure that formed of bending top 5 and magnesium alloy sheet 2 as indicated with 2, Fig. 2 is patrix bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is the fillet that patrix bends top.Then open motor 7, thin plate is pulled with 2.9m/min.Stop after magnesium alloy sheet 2 is completely pulled out of continuous bend mould 1, magnesium alloy sheet 2 has been continuously curved 4 times, namely upwards 2 times, downward 2 times.Then carry out anneal to magnesium alloy sheet, annealing temperature is 450 DEG C, and annealing time is 60 minutes.After continuous bend distortion, the Erichsen number of magnesium alloy sheet rises to 4.7mm from 2.3mm, and forming property is significantly improved.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (8)
1. a continuous bend improves the method for magnesium alloy sheet punching performance, it is characterized in that: magnesium alloy sheet is placed on sole piece and slide block and is separately installed with in the bending continuous bend mould come directly towards, bending top on sole piece and slide block is staggered, pressure slide block, the bending top of slide block is contacted with magnesium alloy sheet upper surface, the bending top of sole piece contacts with magnesium alloy sheet lower surface, then continuing pressure slide block makes magnesium alloy sheet present angle of bend θ, 90 °≤θ < 180 °, then/scrolling thin plate one end is drawn with constant rate of speed, thin plate pull-out mould is designated as a time, then magnesium alloy sheet is aligned and anneal.
2. continuous bend improves the method for magnesium alloy sheet punching performance according to claim 1, it is characterized in that: repeated to be positioned in bending mould by thin plate and realize the distortion of magnesium alloy sheet more than 2 times passages.
3. continuous bend improves the method for magnesium alloy sheet punching performance according to claim 2, it is characterized in that: after distortion completes, carry out anneal, or carries out anneal to magnesium alloy sheet between passage distortion.
4. according to claim 1 or 3, continuous bend improves the method for magnesium alloy sheet punching performance, it is characterized in that: when carrying out anneal after being out of shape, annealing temperature is 260-450 DEG C, annealing time is 30 ~ 120 minutes, when carrying out anneal to magnesium alloy sheet between passage distortion, annealing temperature is 260 ~ 400 DEG C, and annealing time is 30 ~ 60 minutes.
5. continuous bend improves the method for magnesium alloy sheet punching performance according to claim 1, it is characterized in that: described continuous bend mould sole piece is identical with the bending top number on slide block or differ one.
6. continuous bend improves the method for magnesium alloy sheet punching performance according to claim 5, it is characterized in that: the bending top number of slide block is 4, and the bending top number of sole piece is 5.
7. continuous bend improves the method for magnesium alloy sheet punching performance according to claim 1, it is characterized in that: in BENDING PROCESS, thin plate drives speed to be 2.9m/min.
8. continuous bend improves the method for magnesium alloy sheet punching performance according to claim 1, it is characterized in that: described contact part adopts oil lubrication.
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| CN110508617A (en) * | 2019-08-06 | 2019-11-29 | 太原理工大学 | The wrinkle rolling thinning device and processing method of weak basal plane texture magnesium alloy plate and belt |
| CN113046662A (en) * | 2021-03-08 | 2021-06-29 | 太原理工大学 | Device and method for improving strip-shaped local performance of large-size magnesium alloy sheet |
| CN113740144A (en) * | 2020-05-27 | 2021-12-03 | 宝山钢铁股份有限公司 | Method for evaluating rolling property of sheet electrical steel |
| CN114378540A (en) * | 2022-01-21 | 2022-04-22 | 厦门聚视智创科技有限公司 | Curved surface processing method of thick aluminum substrate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113740144B (en) * | 2020-05-27 | 2023-10-17 | 宝山钢铁股份有限公司 | Method for evaluating rollability of thin plate electrical steel |
| CN113046662A (en) * | 2021-03-08 | 2021-06-29 | 太原理工大学 | Device and method for improving strip-shaped local performance of large-size magnesium alloy sheet |
| CN114378540A (en) * | 2022-01-21 | 2022-04-22 | 厦门聚视智创科技有限公司 | Curved surface processing method of thick aluminum substrate |
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