CN202330190U - Device for measuring plastic formation performance of magnesium alloy plate - Google Patents
Device for measuring plastic formation performance of magnesium alloy plate Download PDFInfo
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- CN202330190U CN202330190U CN2011204646876U CN201120464687U CN202330190U CN 202330190 U CN202330190 U CN 202330190U CN 2011204646876 U CN2011204646876 U CN 2011204646876U CN 201120464687 U CN201120464687 U CN 201120464687U CN 202330190 U CN202330190 U CN 202330190U
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- blank holder
- magnesium alloy
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- alloy sheet
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Abstract
The utility model discloses a device for measuring a plastic formation performance of a magnesium alloy plate. The device comprises a plunger chip, a base and a concave mould, wherein the concave mould is connected with the base through a blank holder; circular holes are formed in the middles of concave mould and the blank holder; a plane of the outer side of the circular hole of the concave mould and a plane of the outer side of the circular hole of the blank holder are respectively provided with a groove and a lug boss which are matched with each other; the groove is an annular groove which is arranged at the position of the blank holder, which is close to the edge; the lug boss is an annular bulge which is arranged on the concave mould and is matched with the annular groove; the plunger chip, the base, the concave groove and the blank holder are arranged in a heating box; the upper wall of the heating box is provided with an opening I and the lower wall of the heating box is provided with an opening II; and the plunger chip is fixedly arranged on a worktable through the opening II of the lower wall of the heating box. The device can be used on various general material test machines or hydraulic machines, and clamping force or blank holder force does not need to be supplied; and the test device has the advantages of simple structure, convenience for test piece exchanging and the like.
Description
Technical field
The utility model relates to light-alloy plate plastic forming technology field, relates in particular to a kind of device of measuring magnesium alloy sheet Plastic Forming performance.
Background technology
Magnesium alloy is a lightest in the world present structural metallic materials; Have that specific strength and specific stiffness are all high, the heat-conductivity conducting performance is good, damping shock absorption property and electromagnetic wave shielding is all very strong, waste material is prone to advantages such as recovery; Be widely used in Aero-Space, electronics and automobile and other industries, be described as " the green engineering structural metallic materials of 21 century ".Because magnesium is the close-packed hexagonal crystal structure, magnesium alloy bad plasticity under the normal temperature is difficult to be shaped, and therefore most of magnesium alloy product all is through the method moulding of casting, seldom adopts the method moulding of plastic working, and this has just limited the Application of Magnesium scope.Research shows that along with the rising of temperature, magnesium alloy crystallization again begins to take place, and slip system increases, and plasticity improves greatly, and this just provides possibility for the magnesium alloy heat forming technology.In recent years, the hot press-formed magnesium alloy that become of magnesium alloy sheet is used new research focus.The magnesium alloy drop stamping goods that method through plastic working obtains have good mechanical performance and surface quality, so the hot press-formed technology of magnesium alloy will have range of application widely.
The Plastic Forming performance of magnesium alloy sheet is to confirm the foundation of the hot press-formed technology of magnesium alloy, and is determining the success or failure of its processing.In order to weigh the hot press-formed ability of different magnesium alloy materials, need to measure the Plastic Forming performance of magnesium alloy sheet.During the magnesium alloy sheet drawing; Plate need be heated to certain temperature (about 150～300 ℃); Therefore need to measure the Plastic Forming performance of magnesium alloy sheet under different temperatures, this is different with the method and apparatus of measuring the Plastic Forming performance of moulding material under the normal temperature condition.
For the metal blank that normal temperature condition is shaped down, the mensuration of its Plastic Forming performance can adopt standard GB/T4156-1984 " cupping test of metal method " to carry out.Its method of testing is: use head as the spherical punch of given size, the sample that is clamped between die and blank holder is pressed in the die, till occurring penetrating the crack of sample thickness.The degree of depth of measuring punch top pressing in sample is as Erichsen number, in order to the reflection material in the plastic yield performance of drawing when being expanded into shape.The experiment of metal cupping is applicable to that measuring thickness is the plastic yield performance that 0.2～2mm, width are equal to or greater than 90mm sheet metal and band.The cupping experiment is all carried out on specialized equipment cupping experimental machine usually.For alloy plate material, the mensuration of its plastic yield performance can adopt non-ferrous metal industry standard YS/T 419-2000 " aluminium and aluminium alloy AEG-process method ", and this standard is applicable to aluminium that 0.1mm～3mm is thick and alloy plate material, band, foil.Aluminium AEG-process and cupping test of metal method and apparatus are basic identical, and for the aluminium sheet of thickness greater than 2mm, the die size that the aluminium AEG-process is used is different.
The AEG-process of more than measuring sheet metal Plastic Forming performance (10～30 ℃) is all at normal temperatures carried out, and obviously can not be used to measure the Plastic Forming performance of magnesium alloy plate under the uniform temperature condition.In addition, cupping experiment is all carried out on the specialized equipment cupping testing machine, requires equipment that certain clamping force is provided, and this just makes AEG-process be difficult on the general Material Testing Machine to carry out.
Summary of the invention
The purpose of the utility model is exactly can not measure the Plastic Forming performance of magnesium alloy plate under specific temperature conditions in order to solve the prior art test method, and test needs the problem of specialized equipment; A kind of device of measuring magnesium alloy sheet Plastic Forming performance is provided; The magnesium alloy sheet that can measure different-thickness is between the room temperature to 300 ℃, with the Plastic Forming performance under different distortion speed, the different lubricating condition.This test can be carried out on various versatile material testing machines or hydropress, clamping force or pressure-pad-force need be provided, and that test unit has is simple in structure, change advantages such as test specimen is convenient.
To achieve these goals, the utility model adopts following technical scheme:
A kind of device of measuring magnesium alloy sheet Plastic Forming performance; Comprise drift, base, die; Die connects with base; Die connects with base through blank holder, and the centre of die and blank holder is a circular hole, is respectively equipped with groove and the boss that matches on the plane in the die circular hole outside with the corresponding position, plane in the blank holder circular hole outside.
Said groove is to be located at the keep to the side toroidal cavity of position of blank holder, and said boss is that the annular that matches with toroidal cavity that is located on the die is protruding.
Said die is connected through bolt with blank holder.
Side channel is established in the base both sides, establishes sidewall with the corresponding blank holder of base side channel both sides, and the sidewall of blank holder and the side channel of base are connected.
The front portion of blank holder is equipped with handle.Handle is convenient to assembly insertion mould bases and is extracted out from mould bases.
Processing test specimen locating slot on the blank holder.Locating slot is convenient to the test specimen location.
Said drift, base, die, blank holder are located in the heating cabinet, and the heating cabinet upper wall is provided with opening I, and the heating cabinet lower wall is provided with opening II.Drift is fixed on the worktable through the opening II of the lower wall of heating cabinet, and drift gets into from the circular hole of base, be clearance fit between drift and the circular hole, can be conveniently when the installation experimental provision the fixing position of drift and mould bases.
Heating cabinet adopts the resistance wire heating, is provided with fan air blast thermal cycle in the heating cabinet; Said heating cabinet adopts PID control.
On drift and/or test specimen, smear lubricant.Magnesium alloy sheet Plastic Forming performance can be improved like this and the influence of lubricant can be confirmed forming property.
Use of the utility model and principle of work: this test is being carried out on the versatile material testing machine or on the common hydropress, and testing machine need not provide extra pressure-pad-force or clamping force.The assembly of die, test specimen and blank holder is inserted on the mould bases base, forms a bulk testing device, test unit is placed in the heating cabinet, test unit is fixed on the entablature through the opening that pull bar passes the heating cabinet upper wall; Drift is fixed on the worktable through the opening of the lower wall of heating cabinet, be clearance fit between drift and the circular hole, can be conveniently when experimental provision is installed the fixing position of drift and mould bases.Heating cabinet is placed on the worktable, need not fix, and heating cabinet can be set from the arbitrary temperature value between the room temperature to 300 ℃ and keep steady temperature.The assembly of die and blank holder is inserted in the mould bases base side channel through the blank holder side walls and is connected with mould bases, is convenient for changing test specimen.The front portion of blank holder is equipped with handle, and the ease of assembly body inserts mould bases and extracts out from mould bases.Processing test specimen locating slot is convenient to the test specimen location on the blank holder.Blank holder outward flange processing one circle flanging muscle groove; The outer edge processing one circle flanging muscle boss that die is corresponding; The magnesium alloy sheet test specimen is placed on above the blank holder with locating slot, is placed on die above the test specimen, the groove on the blank holder is corresponding with the lug boss position of die; Die and blank holder firmly are fixed; Under the effect of the pretightning force through connecting die and blank holder bolt, plastic yield takes place in test specimen at the coined recess place, and the test specimen between the groove of blank holder and the boss of die suppresses one and encloses the flanging muscle.
The beneficial effect of the utility model:
1. the utility model can carry out determination test with the Plastic Forming performance under different distortion speed, the different lubricating condition to the magnesium alloy sheet under the different temperatures between the room temperature to 300 ℃ of different-thickness.
2. this test can be carried out on various versatile material testing machines or hydropress, clamping force or pressure-pad-force need be provided, simple in structure, replacing test specimen convenience that test unit has.
Description of drawings
Fig. 1 is the schematic representation of apparatus that the utility model is measured magnesium alloy sheet Plastic Forming performance.
Wherein, 1, the testing machine worktable, 2, backing plate, 3, heating cabinet, 4, drift, 5, base; 6, blank holder, 7, test specimen, 8, die, 9, bolt, 10, column, 12, template; 13, pull bar, 15, pressing plate, 19, the testing machine entablature, 22, side channel, 23, sidewall.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
A kind of device of measuring magnesium alloy sheet Plastic Forming performance, as shown in Figure 1, among the figure, testing machine worktable 1, backing plate 2, heating cabinet 3, drift 4; Base 5, blank holder 6, test specimen 7, die 8, bolt 9, column 10; Template 12, pull bar 13, pressing plate 15, testing machine entablature 19, side channel 22, sidewall 23.Die 8 is a circular hole with the centre of blank holder 6; Plane outside the circular hole of die is respectively equipped with groove and the boss that matches with the corresponding position, plane in the blank holder circular hole outside; Said base 5, blank holder 6, die 8 connect through bolt 9; Base 5 connects with template 12 through column 10, and template 12 connects with pressing plate 15 through pull bar 13, and pressing plate 15 connects with testing machine entablature 19.Said groove is to be located at the keep to the side toroidal cavity of position of blank holder 6, and said boss is that the annular that matches with toroidal cavity that is located on the die 8 is protruding.Side channel 22 is established in base 5 both sides, establishes sidewall 23 with base 5 side channels 22 corresponding blank holders 6 both sides, and the sidewall 23 of blank holder 6 is connected with the side channel 22 of base.The front portion of blank holder 6 is equipped with handle, and handle is convenient to assembly insertion mould bases and is extracted out from mould bases.Processing test specimen locating slot on the blank holder 6, locating slot is convenient to the test specimen location.Said drift 4, base 5, die 8, blank holder 6 are located in the heating cabinet 3, and heating cabinet 3 upper walls are provided with opening I, and heating cabinet 3 lower wall centers are provided with opening II, and heating cabinet 3 adopts the resistance wire heating, is equipped with fan air blast thermal cycle, and heating cabinet 3 adopts PID control.
Concrete testing procedure is: 1. magnesium alloy sheet test specimen 7 is placed on above the blank holder 6 with locating slot; Be placed on die 8 above the test specimen 7, with hexagon socket head cap screw die 8 and blank holder 6 linked together, blank holder 6 upper surface outward flanges have the groove of a circle flanging muscle; There is the boss of a circle flanging muscle the corresponding position of die 8 lower surfaces; The bolt 9 of screwing, under the effect of bolt pretightening, die 8 suppresses a circle flanging muscle with blank holder 6 with the test specimen 7 in the middle of their; The metal that flanging muscle on the test specimen 7 can stop sample edge in the process of the test flows in the die hole, and magnesium alloy sheet is deformed into pure bulging in the warranty test process.2. the assembly with die 8, test specimen 7 and blank holder 6 is inserted on the base 5 of mould bases, and the side channel of the sidewall of blank holder 6 and base 5 is connected, and assembly can be inserted into easily on the base 5 of mould bases or from base 5 and extract out, makes things convenient for the replacing of test specimen.3. whole mould bases is placed in the heating cabinet 3, and the upper end of mould bases has two pull bars from two holes of heating cabinet 3 upper walls, to pass and be fixed on the testing machine entablature 19.Heating cabinet 3 is placed on the backing plate 2 above the testing machine worktable 1.The end is passed and is fixed on the backing plate 2 from the hole of heating cabinet 3 lower walls for spherical drift 4.Before on-test, the position of adjustment testing machine work stage 1 or testing machine entablature 19 makes drift 4 contact with test specimen 7.4. shut the door of heating cabinet 3, set the temperature that test specimen 7 needs heating, begin heating for then heating cabinet 3 energisings, after being heated to design temperature, waiting for 10 minutes the temperature in the heating cabinet 3 is tended towards stability, just can make an experiment then.5. testing machine worktable 1 upward speed is set, then just can the starting characteristics test machine, the testing machine worktable moves upward, and testing machine worktable band heating cabinet 3 and is moved upward together with drift 4, and testing machine entablature 19 keeps static with the test mould bases.6. pure bulging distortion takes place in test specimen 7 under the effect of drift 4; When crackles or test power take place and descend suddenly in test specimen 7, hard stop, the movement travel of record drift 4; Be the height of test specimen bulging, this height value size has reflected the Plastic Forming performance of magnesium alloy sheet under Current Temperatures.7. after the off-test, testing machine work stage 1 is moved down, open 3 of heating cabinets; The assembly of die 8, test specimen 7 and blank holder 6 is extracted out from the base 5 of mould bases; Screw off the bolt that connects die 8 and blank holder 6, test specimen is taken off, the next test specimen of then can packing into carries out next one test.Test specimen is taken off and change test specimen 7 in heating cabinet 3, behind the replacing test specimen, heating the temperature inside the box can be elevated to the temperature of setting within a short period of time.When needs are confirmed lubricant to the influencing of forming property, can on drift 4 and test specimen 7, smear lubricant.
Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technical scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.
Claims (8)
1. a device of measuring magnesium alloy sheet Plastic Forming performance comprises drift, base; Die; Die connects with base, it is characterized in that, die connects with base through blank holder; The centre of die and blank holder is a circular hole, is respectively equipped with groove and the boss that matches on the plane in the die circular hole outside with the corresponding position, plane in the blank holder circular hole outside.
2. the device of mensuration magnesium alloy sheet Plastic Forming performance as claimed in claim 1; It is characterized in that; Said groove is to be located at the keep to the side toroidal cavity of position of blank holder, and said boss is that the annular that matches with toroidal cavity that is located on the die is protruding.
3. the device of mensuration magnesium alloy sheet Plastic Forming performance as claimed in claim 1 is characterized in that said die is connected through bolt with blank holder and compresses.
4. the device of mensuration magnesium alloy sheet Plastic Forming performance as claimed in claim 1 is characterized in that side channel is established in said base both sides, establishes sidewall with the corresponding blank holder of base side channel both sides, and the sidewall of blank holder and the side channel of base are connected.
5. the device of mensuration magnesium alloy sheet Plastic Forming performance as claimed in claim 1 is characterized in that the front portion of said blank holder is equipped with handle.
6. the device of mensuration magnesium alloy sheet Plastic Forming performance as claimed in claim 1 is characterized in that, said drift, and base, die, blank holder are located in the heating cabinet, and the heating cabinet upper wall is provided with opening I, and the heating cabinet lower wall is provided with opening II.
7. the device of mensuration magnesium alloy sheet Plastic Forming performance as claimed in claim 6 is characterized in that, said heating cabinet adopts the resistance wire heating, is provided with fan air blast thermal cycle in the heating cabinet; Said heating cabinet adopts PID control.
8. the device of mensuration magnesium alloy sheet Plastic Forming performance as claimed in claim 1 is characterized in that, smears lubricant on the said drift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204646876U CN202330190U (en) | 2011-11-22 | 2011-11-22 | Device for measuring plastic formation performance of magnesium alloy plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204646876U CN202330190U (en) | 2011-11-22 | 2011-11-22 | Device for measuring plastic formation performance of magnesium alloy plate |
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| Publication Number | Publication Date |
|---|---|
| CN202330190U true CN202330190U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204646876U Expired - Fee Related CN202330190U (en) | 2011-11-22 | 2011-11-22 | Device for measuring plastic formation performance of magnesium alloy plate |
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| Country | Link |
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| CN (1) | CN202330190U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384876A (en) * | 2011-11-22 | 2012-03-21 | 山东大学 | Device and method for measuring plastic forming performance of magnesium alloy sheet metal |
| CN103335628A (en) * | 2013-07-05 | 2013-10-02 | 中北大学 | Measuring device for deformation of cylindrical blank |
| CN103698200A (en) * | 2013-12-20 | 2014-04-02 | 江苏大学 | Plate material performance test experimental device |
| CN110825000A (en) * | 2019-11-29 | 2020-02-21 | 山东大学 | Multi-loop intelligent energy-saving control system and method |
-
2011
- 2011-11-22 CN CN2011204646876U patent/CN202330190U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384876A (en) * | 2011-11-22 | 2012-03-21 | 山东大学 | Device and method for measuring plastic forming performance of magnesium alloy sheet metal |
| CN103335628A (en) * | 2013-07-05 | 2013-10-02 | 中北大学 | Measuring device for deformation of cylindrical blank |
| CN103335628B (en) * | 2013-07-05 | 2016-08-17 | 中北大学 | A kind of measurement apparatus of deformation of cylindrical blank |
| CN103698200A (en) * | 2013-12-20 | 2014-04-02 | 江苏大学 | Plate material performance test experimental device |
| CN103698200B (en) * | 2013-12-20 | 2016-01-13 | 江苏大学 | A kind of plate material performance test experimental |
| CN110825000A (en) * | 2019-11-29 | 2020-02-21 | 山东大学 | Multi-loop intelligent energy-saving control system and method |
| CN110825000B (en) * | 2019-11-29 | 2020-07-31 | 山东大学 | Multi-loop intelligent energy-saving control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20131122 |