CN104862627B - A kind of continuous bend improves the method for magnesium alloy sheet punching performance - Google Patents
A kind of continuous bend improves the method for magnesium alloy sheet punching performance Download PDFInfo
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- CN104862627B CN104862627B CN201510332444.XA CN201510332444A CN104862627B CN 104862627 B CN104862627 B CN 104862627B CN 201510332444 A CN201510332444 A CN 201510332444A CN 104862627 B CN104862627 B CN 104862627B
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Abstract
nullThe present invention relates to a kind of method that continuous bend improves magnesium alloy sheet punching performance，The method is magnesium alloy sheet to be put into continuous bend mould magnesium alloy sheet is carried out continuous bend deformation，Its procedure is: be placed in by magnesium alloy sheet on sole piece and slide block in the continuous bend mould being separately installed with bending top，Bending top on sole piece and slide block is staggered，Bending top number on sole piece and slide block differs one or equal，Magnesium alloy sheet is placed in the top of sole piece bending top，Pressure slide block，Make the upper surface of bending of slide block top and magnesium alloy sheet，Then proceeding to depress 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，Make it realize magnesium alloy plate to a direction motion and carry out the flexural deformation of continuous several times in upper and lower both direction，Then magnesium alloy sheet is made annealing treatment.
Description
Technical field
The invention belongs to nonferrous materials plastic working field, be specifically related to a kind of continuous bend and improve magnesium alloy sheet stampability
The method of energy.
Background technology
Magnesium alloy has light weight, specific strength and specific stiffness are high, heat conductivity is good and the electromagnetic shielding capability series of advantages such as by force,
The fields such as track traffic, electronic information, Aero-Space and defence and military have broad application prospects.Magnesium-alloy material is with casting
Part particularly die casting is main, but cast magnesium alloy exists coarse grains, mechanical property is poor, be easily generated the shortcomings such as defect,
Greatly limit the application of magnesium alloy.Compared with cast magnesium alloy, deformed magnesium alloy material more development prospect, can by deformation
With plate, rod, pipe, forging and product forms that production specification is various, and can be by the control of material structure and heat treatment work
The application of skill, it is thus achieved that more higher intensity than casting magnesium alloy material, more preferable ductility, thus meet the needs of various structural member.
But magnesium alloy has the crystal structure of close-packed hexagonal, easily form stronger basal plane texture when rolling and extruding, lower of room temperature
There are a main slide surface and two basal slip systems to start, and a small amount of { the 10-12} conical surface is twin, the deformation mechanism started
Quantity much smaller than Von-Mises yield criterion: metal needs wants 5 independent slip system compatible deformations, and therefore magnesium alloy is in room temperature
Lower plastic deformation ability is poor.
Research shows, can effectively be controlled the i.e. texture controlling of (0001) basal plane orientation of magnesium alloy by suitable processing technique, can produce
Raw texture softens, and makes basal slip start and is more prone to, thus improve its plasticity, improves its forming property.But existing processing
Technique the most unidirectional multi-pass bending process etc. still suffers from deficiency, it is impossible to realizing the continuous prodution of magnesium alloy sheet, production efficiency is low,
Limit its industrial applications.Therefore the invention provides a kind of method that continuous bend improves magnesium alloy sheet forming property, no
Only can improve the forming property of magnesium alloy sheet, it is also possible to realize continuous prodution, efficiency is high, it is possible to realize automatic metaplasia
Produce.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of method that continuous bend improves magnesium alloy sheet punching performance, pass through
Magnesium alloy sheet carries out continuous bend deformation makes magnesium alloy plate thin plate by the effect of alternate stress to control texture, thus reaches
Improve the purpose of Mg alloy formed performance.
For reaching above-mentioned purpose, the present invention provides following technical scheme:
A kind of continuous bend improves the method for magnesium alloy sheet punching performance, is placed in by magnesium alloy sheet on sole piece and slide block and pacifies respectively
In continuous bend mould equipped with bending top, bending on sole piece and slide block top is staggered, and depresses slide block, slide block along
Connecting rod moves down, and makes bending top and the magnesium alloy sheet upper surface of slide block, the bending top of sole piece and magnesium alloy sheet following table
Face contacts, and then proceedes to depress slide block and makes magnesium alloy sheet present angle of bend θ, 90 °≤θ ＜ 180 °, then with constant
Speed draws/scrolling thin plate one end, thin plate pull-out mould to be designated as a time, then align magnesium alloy sheet and make annealing treatment.
Preferably, more than 2 times passage deformation of magnesium alloy sheet are realized in repeating thin plate to be positioned over bending mould.
Preferably, make annealing treatment after deformation completes, or between passage deforms, magnesium alloy sheet is made annealing treatment.
Preferably, when making annealing treatment after deformation, annealing temperature is 260-450 DEG C, and annealing time is 30～120 minutes, passage
When between deformation making annealing treatment magnesium alloy sheet, annealing temperature is 260～400 DEG C, and annealing time is 30～60 minutes.
Preferably, described continuous bend mould sole piece is identical with the bending top number on slide block or differs 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 portion uses oil lubrication.
The beneficial effects of the present invention is: 1) present invention by magnesium alloy sheet is carried out continuous bend test, make magnesium alloy sheet
Upper and lower surface by the effect alternately of tension and compressive stress；Owing in BENDING PROCESS, the inner surface of sheet material receives compressive stress,
Easily produce 10-12} stretches twin, and outer surface, by tension, is controlled by non-basal slip, interior appearance during back-flexing
Face exchanges, and stress state is exchanged, owing to { polarity of 10-12} stretching twin, moves back twin in the case of by contrary power
Raw phenomenon, due to twin, sliding and move back twin reciprocal action and cause the basal plane texture of thin plate to weaken.Therefore, the present invention passes through
Continuous bend technology weakens the basal plane texture of magnesium alloy sheet, has reached the ability of the forming property improving magnesium alloy sheet
Purpose, solves existing magnesium alloy sheet and causes the poor problem of its plastic deformation ability compared with strong basis plane texture；2) present invention can be used for
Continuous prodution, efficiency is high, and can realize automatization.
Accompanying drawing explanation
In order to make the purpose of the present invention, technical scheme and beneficial effect clearer, the present invention provides drawings described below to illustrate:
Fig. 1 is the structural representation of the bending mould that magnesium alloy sheet carries out continuous bend deformation, wherein 1. continuous bend mould,
2. magnesium alloy sheet, 3. sole piece, 4. slide block, 5. bending top, 6. connecting rod, 7. housing 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 bending top
The fillet of head；
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 through diastrophic magnesium alloy thin
The cupping sample of plate.
Detailed description of the invention
Embodiment 1
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 4 bendings
Top, sole piece is provided with 5 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 3.2mm,
The angle of bend making thin plate is 160 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For 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 opening 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
Only, magnesium alloy sheet 2 has been continuously curved 8 times, the most upwards 4 times, downward 4 times.Then magnesium alloy sheet is annealed
Processing, annealing temperature is 350 DEG C, and annealing time is 60 minutes.
In Fig. 3, (a) is that (b) is for through flexural deformation described in embodiment 1 without diastrophic magnesium alloy sheet basal plane pole figure
Magnesium alloy sheet basal plane pole figure；The most original magnesium alloy sheet is typical basal plane texture, and crystal grain c-axis mainly collects
In on gauge of sheet direction, after embodiment 1, basal plane texture intensity substantially reduces, and the c-axis of portion crystal to
Rolling reversely deflection.
After embodiment 1, the yield strength of magnesium alloy sheet is reduced to 135Mpa from 159Mpa, and plastic strain ratio r is from 2.
80 are down to 1.60, and work hardening index n increases to 0.29 from 0.25, and elongation percentage increases to 14.6% from 12.3%, in Fig. 4 (a)
For the cupping sample without diastrophic magnesium alloy sheet, (b) is the cupping sample through diastrophic magnesium alloy sheet,
Erichsen number increases to 5.2mm from 3.7mm as can be seen from Figure 4, and plastic deformation ability is significantly improved.
Embodiment 2
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 4 bendings
Top, sole piece is provided with 5 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 5.8mm,
The angle of bend making thin plate is 146 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For 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 opening 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
Only, magnesium alloy sheet 2 has been continuously curved 8 times, the most upwards 4 times, downward 4 times.Then magnesium alloy sheet is annealed
Processing, annealing temperature is 350 DEG C, and annealing time is 60 minutes.Through continuous bend deform after magnesium alloy sheet Erichsen number from
3.7mm rises to 5.5mm, and forming property is significantly improved.
Embodiment 3
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 3 bendings
Top, sole piece is provided with 4 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 5.8mm,
The angle of bend making thin plate is 146 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For upper mold bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is upper mold bending top
Fillet.Then opening motor 7, thin plate is pulled with 2.9m/min.When magnesium alloy sheet 2 is completely pulled out of continuous bend mould
Stopping after tool 1, magnesium alloy sheet 2 has been continuously curved 6 times, the most upwards 3 times, downward 3 times.Then to magnesium alloy sheet
Making annealing treatment, annealing temperature is 450 DEG C, and annealing time is 60 minutes.Magnesium alloy sheet after continuous bend deforms
Erichsen number rises to 3.6mm from 2.3mm, and forming property is significantly improved.
Embodiment 4
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 3 bendings
Top, sole piece is provided with 4 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 8.3mm,
The angle of bend making thin plate is 135 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For upper mold bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is upper mold bending top
Fillet.Then opening motor 7, thin plate is pulled with 2.9m/min.When magnesium alloy sheet 2 is completely pulled out of continuous bend mould
Stopping after tool 1, magnesium alloy sheet 2 has been continuously curved 6 times, the most upwards 3 times, downward 3 times.Then to magnesium alloy sheet
Making annealing treatment, annealing temperature is 450 DEG C, and annealing time is 60 minutes.Magnesium alloy sheet after continuous bend deforms
Erichsen number rises to 4.0mm from 2.3mm, and forming property is significantly improved.
Embodiment 5
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 2 bendings
Top, sole piece is provided with 3 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 5.8mm,
The angle of bend making thin plate is 146 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For upper mold bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is upper mold bending top
Fillet.Then opening motor 7, thin plate is pulled with 2.9m/min.When magnesium alloy sheet 2 is completely pulled out of continuous bend mould
Stopping after tool 1, magnesium alloy sheet 2 has been continuously curved 4 times, the most upwards 2 times, downward 2 times.Then to magnesium alloy sheet
Making annealing treatment, annealing temperature is 260 DEG C, and annealing time is 60 minutes.Magnesium alloy sheet after continuous bend deforms
Erichsen number rises to 3.3mm from 2.3mm, and forming property is significantly improved.
Embodiment 6
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 2 bendings
Top, sole piece is provided with 3 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 10.0mm,
The angle of bend making thin plate is 126 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For upper mold bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is upper mold bending top
Fillet.Then opening motor 7, thin plate is pulled with 2.9m/min.When magnesium alloy sheet 2 is completely pulled out of continuous bend mould
Stopping after tool 1, magnesium alloy sheet 2 has been continuously curved 4 times, the most upwards 2 times, downward 2 times.Then to magnesium alloy sheet
Making annealing treatment, annealing temperature is 260 DEG C, and annealing time is 60 minutes.Magnesium alloy sheet after continuous bend deforms
Erichsen number rises to 3.8mm from 2.3mm, and forming property is significantly improved.
Embodiment 7
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 2 bendings
Top, sole piece is provided with 3 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 10.0mm,
The angle of bend making thin plate is 126 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For upper mold bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is upper mold bending top
Fillet.Then opening motor 7, thin plate is pulled with 2.9m/min.When magnesium alloy sheet 2 is completely pulled out of continuous bend mould
Stopping after tool 1, magnesium alloy sheet 2 has been continuously curved 4 times, the most upwards 2 times, downward 2 times.After sheet material pull-out mould it is
1 passage, then carry out the 2nd passage continuous bend, middle without annealing.Then magnesium alloy sheet is made annealing treatment, annealing temperature
Degree is respectively 260 DEG C, and 300 DEG C, 400 DEG C and 450 DEG C, annealing time is 60 minutes.Magnesium alloy after continuous bend deforms
The Erichsen number of thin plate rises to 5.1mm, 5.0mm, 5.3mm and 5.2mm forming property respectively and is significantly carried from 2.3mm
High.
Embodiment 8
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 2 bendings
Top, sole piece is provided with 3 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 10mm,
The angle of bend making thin plate is 126 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For upper mold bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is upper mold bending top
Fillet.Then opening motor 7, thin plate is pulled with 2.9m/min.When magnesium alloy sheet 2 is completely pulled out of continuous bend mould
Stopping after tool 1, magnesium alloy sheet 2 has been continuously curved 4 times, the most upwards 2 times, downward 2 times.After sheet material pull-out mould it is
1 passage, then carry out the 2nd passage continuous bend, anneal 30 minutes for middle 260 DEG C.Then magnesium alloy sheet is carried out annealing treatment
Reason, annealing temperature is 260 DEG C, and annealing time is 60 minutes.Through continuous bend deform after magnesium alloy sheet Erichsen number from
2.3mm rises to 5.1mm, and forming property is significantly improved.
Embodiment 9
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 2 bendings
Top, sole piece is provided with 3 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 10.0mm,
The angle of bend making thin plate is 126 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For upper mold bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is upper mold bending top
Fillet.Then opening motor 7, thin plate is pulled with 2.9m/min.When magnesium alloy sheet 2 is completely pulled out of continuous bend mould
Stopping after tool 1, magnesium alloy sheet 2 has been continuously curved 4 times, the most upwards 2 times, downward 2 times.After sheet material pull-out mould it is
1 passage, then carry out the 2nd～4 passage continuous bend, middle without annealing.Then magnesium alloy sheet is made annealing treatment, annealing
Temperature is 450 DEG C, and annealing time is 60 minutes.After continuous bend deforms, the Erichsen number of magnesium alloy sheet is from 2.3mm respectively
Rising to 5.2mm, 4.8mm, 4.7mm forming property is all significantly improved.
Embodiment 10
Illustrating in conjunction with accompanying drawing 1, be placed in continuous bend mould 1 by the magnesium alloy sheet 2 of banding, slide block is provided with 2 bendings
Top, sole piece is provided with 3 bending tops, and magnesium alloy sheet 2 and continuous bend mould 1 contact portion lubricate with lubricant,
Magnesium alloy sheet 2 being placed in the top of sole piece bending top 5, rotates housing screw 7, slide block moves down along connecting rod 6, makes sliding
Block bending top 5 and the upper surface of magnesium alloy sheet 2.With this as the starting point, rotate housing screw 7 and press downwards 11.5mm,
The angle of bend making thin plate is 120 °, and wherein the angle figure of bending top 5 and magnesium alloy sheet 2 formation is as indicated with 2, Fig. 2
For upper mold bending top partial enlarged drawing, its ∠ AOB is the angle of magnesium alloy thin plate benging, and ∠ COD is upper mold bending top
Fillet.Then opening motor 7, thin plate is pulled with 2.9m/min.When magnesium alloy sheet 2 is completely pulled out of continuous bend mould
Stopping after tool 1, magnesium alloy sheet 2 has been continuously curved 4 times, the most upwards 2 times, downward 2 times.Then to magnesium alloy sheet
Making annealing treatment, annealing temperature is 450 DEG C, and annealing time is 60 minutes.Magnesium alloy sheet after continuous bend deforms
Erichsen number rises to 4.7mm from 2.3mm, and forming property is significantly improved.
Finally illustrating, preferred embodiment above is only in order to illustrate technical scheme and unrestricted, although by above-mentioned
The present invention is described in detail by preferred embodiment, it is to be understood by those skilled in the art that can in form and
In details, it is made various change, without departing from claims of the present invention limited range.
Claims (5)
1. the method that a continuous bend improves magnesium alloy sheet punching performance, it is characterized in that: magnesium alloy sheet is placed on sole piece and slide block in the continuous bend mould being separately installed with bending top, bending top on sole piece and slide block is staggered, pressure slide block, make bending top and the magnesium alloy sheet upper surface of slide block, the bending top of sole piece contacts with magnesium alloy sheet lower surface, then proceeding to depress 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 aligned and make annealing treatment；More than 2 times passage deformation of magnesium alloy sheet are realized in repeating thin plate to be positioned over bending mould；Make annealing treatment after deformation completes, or between passage deforms, magnesium alloy sheet is made annealing treatment；When making annealing treatment after having deformed, annealing temperature is 260-450 DEG C, and annealing time is 30 ~ 120 minutes, and when between passage deformation making annealing treatment magnesium alloy sheet, annealing temperature is 260 ~ 400 DEG C, and annealing time is 30 ~ 60 minutes.
The method that the most according to claim 1, continuous bend improves magnesium alloy sheet punching performance, it is characterised in that: described continuous bend mould sole piece is identical with the bending top number on slide block or differs one.
The method that the most according to claim 2, continuous bend improves magnesium alloy sheet punching performance, it is characterised in that: the bending top number of slide block is 4, and the bending top number of sole piece is 5.
The method that the most according to claim 1, continuous bend improves magnesium alloy sheet punching performance, it is characterised in that: in BENDING PROCESS, thin plate drives speed to be 2.9m/min.
The method that the most according to claim 1, continuous bend improves magnesium alloy sheet punching performance, it is characterised in that: described contact portion uses oil lubrication.
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| GB2561564B (en) * | 2017-04-18 | 2019-12-18 | Univ Of Hertfordshire Higher Education Corporation | A method of reducing spring back in a metallic material |
| CN110508617B (en) * | 2019-08-06 | 2020-11-27 | 太原理工大学 | Crease rolling and thinning device and processing method for weak basal plane texture magnesium alloy plate strip |
| 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 |
| CN113046662B (en) * | 2021-03-08 | 2022-09-02 | 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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| US20070079913A1 (en) * | 2005-10-07 | 2007-04-12 | Krajewski Paul E | Method for improving formability of hexagonal close packed metals |
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