CN105223075B - A kind of metal semi-solid thixotroping shaping simulation test device and method - Google Patents
A kind of metal semi-solid thixotroping shaping simulation test device and method Download PDFInfo
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- CN105223075B CN105223075B CN201410320446.2A CN201410320446A CN105223075B CN 105223075 B CN105223075 B CN 105223075B CN 201410320446 A CN201410320446 A CN 201410320446A CN 105223075 B CN105223075 B CN 105223075B
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Abstract
The present invention relates to a kind of metal semi-solid thixotroping shaping simulation test device and method, belong to non-ferrous metals processing field.The device includes pressure mechanism, push tool heads, shear tool heads, heater, material carrier platform, sensing device and data collecting system etc., pressure mechanism is connected with pushing tool heads and shear tool heads respectively, tool heads are pushed can independently to move under pressure mechanism effect with shear tool heads, blank is placed on material carrier platform, heater is located above material carrier platform, blank can be heated, push tool heads and shear tool heads are located at the top of material carrier platform and heater, sensing device is arranged on pressure mechanism and material carrier platform, sensing device is connected with data collecting system.Using the apparatus and method, it can accurately reflect relation of the metal under the conditions of the semisolid between the parameter such as deformation temperature, deformation velocity, resistance of deformation, determine that thixotropic forming mould structure and technique provide foundation for follow-up thixotropic forming.
Description
Technical field
The present invention relates to a kind of metal semi-solid thixotroping shaping simulation test device and method, belongs to non-ferrous metals processing neck
Domain.
Background technology
Semi-solid die casting is a kind of advanced non-ferrous metals processing manufacturing process, and it has easily shaping Complex Parts, mould
Have long lifespan, the advantages that drip molding performance is high.The characteristics of thixotropic forming be when blank heating used in shaping is to semi-solid state,
Original form not being kept by blank during external force and can arbitrarily accommodating transfer, when by shear stress, blank is and for example the same as cream one
As can arbitrarily cut.In actual applications, make the characteristics of semi-solid die casting its on mould structure and forming technology with modeling
Property deformation have very big difference.Generally it is determined that during material plastic deformation technique, Gleeble simulation test machines can be used to material
Ess-strain feature is analyzed under the conditions of different distortion, and with this determination mould structure and technological parameter, but at material
After semi-solid state, the characteristics of structure and working method of Gleeble simulation test machines can not reflect thixotropic forming, therefore
Need to design it is a set of dedicated for determining the thixotropic simulation test device of material, for it is follow-up determine thixotropic forming mould structure and
Technique provides foundation.
The content of the invention
The present invention can not reflect metal the deformation behaviour under the conditions of semisolid the problem of for existing simulated test facility,
A kind of metal semi-solid thixotroping shaping simulation test device and application method are proposed, can be accurate using the apparatus and method
Reflect relation of the metal under the conditions of the semisolid between the parameter such as deformation temperature, deformation velocity, resistance of deformation, be follow-up thixotroping
Shaping determines that thixotropic forming mould structure and technique provide foundation.
To achieve the above object, present invention employs following technical scheme：
A kind of metal semi-solid thixotroping shaping simulation test device, the device include pressure mechanism, push tool heads, shear
Tool heads, heater, material carrier platform, sensing device and data collecting system etc., wherein described pressure mechanism respectively with it is described
The tool heads that push be connected with shear tool heads, the described tool heads that push can under pressure mechanism effect with shear tool heads
Independently to move, blank is placed on described material carrier platform, described heater is located above material carrier platform, blank can be entered
Row heating, it is described to push tool heads and shear tool heads are located at the top of described material carrier platform and heater, described biography
Induction device is arranged on described pressure mechanism and material carrier platform, and described sensing device is connected with described data collecting system
Connect.
Described pressure mechanism can use hydraulic pressure, air pressure or other forms to provide pressure, pressure size and push speed and exist
It is adjustable in certain limit.
Described heater is heating coil, can be sensing heating or resistance heating form, carry out test job
When, blank and material carrier platform are located inside heating coil.
The described tool heads that push are two half cylindrical structures, there is gap between two semicolumns, between semicolumn
Gap can adjust.
Between described shear tool heads push two half cylindrical structures of tool heads described in, it is shaped as sheet,
The big I of specification is selected according to test request.
Described sensing device includes temperature sensor, pressure sensor, displacement transducer and velocity sensor etc..It is described
Pressure sensor, displacement transducer and velocity sensor etc. be arranged in pressure mechanism；Described temperature sensor is thermoelectricity
It is even, the middle part of material carrier platform is arranged at, a part for thermocouple is exposed to material carrier platform top, perpendicular to material carrier platform, for testing base
Material temperature degree.Pressure that blank temperature and pressure mechanism are applied in tool heads and push speed etc. can by sensor transmissions to
Data collecting system, the signal that data collecting system collects any of the above sensor are recorded in real time.
It is a further object of the present invention to provide the application process of above-mentioned metal semi-solid thixotroping shaping simulation test device.
The method that metal semi-solid thixotroping shaping simulated test is carried out using said apparatus, is comprised the following steps：
(1) blank to be tested is placed on material carrier platform, and selected shear tool heads；
(2) start heater to start to blank heating, while push tool heads by pressure mechanism with certain pressure
It is pressed on blank；
(3) when blank heating is to semi-solid state, under the pressure for pushing tool heads, the thermocouple insertion on material carrier platform
To inside blank, the temperature signal of diverse location inside blank is transferred to data collecting system；
(4) after blank temperature reaches predetermined test value, shear tool heads with setting speed or are set by pressure mechanism
Constant-pressure pushes, until blank is cut from centre, the signal such as pressure, speed, displacement passes through sensing device during pushing
It is transferred to data collecting system；
(5) by converting shear temperature, shear tool heads specification, shear velocity or shear pressure, repeat step (1)-
(4) data of one group of reflection material thixotropic property, are obtained.
The present invention uses experimental rig described above and method, can accurately reflect metal semisolid blank deformation process
In, the relation between deformation temperature, resistance of deformation, shear velocity and shear mould, carried for design semi-solid die casting technique
For sufficient theoretical foundation.
Below by the drawings and specific embodiments, the present invention will be further described, but is not meant to protect the present invention
Protect the limitation of scope.
Brief description of the drawings
Fig. 1 is the structural representation of experimental rig of the present invention.
Fig. 2 is to push tool heads in experimental rig of the present invention and cross section signal when shear tool heads fit together
Figure.
Main Reference Numerals explanation：
1 pressure mechanism 2 pushes tool heads
The heating coil of 3 shear tool heads 4
The thermocouple of 5 blank 6
The sensor of 7 material carrier platform 8
9 data collecting instruments
Embodiment
As shown in figure 1, the structural representation for experimental rig of the present invention.The metal semi-solid thixotroping shaping simulation of the present invention
Experimental rig includes pressure mechanism 1, and connected pushes tool heads 2 and shear tool heads 3, the heater wire being disposed below
Circle 4 and material carrier platform 7, and thermocouple 6, multiple sensors 8 and data collecting instrument 9 etc..Material carrier platform 7 is used to place blank 5, heater wire
Circle 4 can be pointed to in-between blank 5 and be heated, thermocouple 6, pressure are provided with material carrier platform 7 positioned at the top of material carrier platform 7
Mechanism 1 is internally provided with multiple sensors 8, including pressure sensor, velocity sensor and displacement transducer etc., the He of thermocouple 6
Sensor 8 is connected by data wire with data collecting instrument 9 respectively.
During test, blank 5 is placed on material carrier platform 7.Pressure mechanism 1 is respectively with pushing tool heads 2 and the phase of shear tool heads 3
Connection, positioned at the top of material carrier platform 7 and heating coil 4, pushing tool heads 2 can under the effect of pressure mechanism 1 with shear tool heads 3
Independently to move, pressure mechanism 1 transfers signals to data by data wire and adopted built with multiple sensors 8, sensor 8
Collect in instrument 9.Thermocouple 6 is arranged at the middle part of material carrier platform 7, and a part for thermocouple 6 is exposed to the top of material carrier platform 7, perpendicular to load
Expect platform 7.When carrying out test job, blank 5 and material carrier platform 7 are located inside heating coil 4, and thermocouple 6 supports blank 5, and
The temperature of blank 5 is sent in data collecting instrument 9.The temperature of blank 5 and pressure mechanism are applied to the pressure in tool heads with
The signal that pressure speed etc. can be collected any of the above sensor to data collecting instrument 9, data collecting instrument 9 by sensor transmissions
Recorded in real time.
As shown in Fig. 2 it is two half cylindrical structures to push tool heads 2, there is gap between two semicolumns, semicolumn it
Between gap can adjust, shear tool heads 3 are between push 2 first two semicolumns of instrument, and its structure is sheet, and specification is big
I is selected according to test request.
Pressure mechanism 1 can use hydraulic pressure, air pressure or other forms to provide pressure, pressure size and push speed in certain model
Enclose interior adjustable.Heating coil 4 can be sensing heating or resistance heating form, when carrying out test job, blank 5 and material carrier platform
7 inside heating coil 4.
In specific implementation process, blank 5 is ready to according to test request first, blank 5 to be tested is worked into a scale
It is placed into after very little on material carrier platform 7, and the specification of shear tool heads 3 used in determination.Start heating coil 4 to start to heat blank 5,
Tool heads 2 are pushed in heating process to be pressed on blank 5 by pressure mechanism 1, certain compression are applied to blank 5, with blank 5
Temperature gradually rises, after blank 5 enters in the range of semi-solid temperature, in the case where pushing the effect of the pressure of tool heads 2, on material carrier platform 7
Support the thermocouple 6 of blank 5 to insert inside blank 5, the temperature signal of the inside diverse location of blank 5 is sent to data collecting instrument
In 9.After the temperature of blank 5 reaches presumptive test temperature, shear tool heads 3 are by pressure mechanism 1 with setting speed or setting
The mode of pressure pushes, until semi-solid blank 5 is cut from centre, so far completes a test process.Passed during pushing
The signals such as pressure, displacement, speed are sent in data collecting instrument 9 and used for subsequent analysis by sensor 8.
By converting shear temperature, shear tool heads specification, shear velocity or shear pressure, repeat to test above, finally
Obtain the data of one group of reflection material thixotropic property.Using the apparatus and method, it can accurately reflect metal in semisolid bar
Relation under part between the parameter such as deformation temperature, deformation velocity, resistance of deformation, thixotropic forming mould is determined for follow-up thixotropic forming
Structure and technique provide foundation.
Claims (9)
- A kind of 1. metal semi-solid thixotroping shaping simulation test device, it is characterised in that：The device includes pressure mechanism, pushes work Have a head, shear tool heads, heater, material carrier platform, sensing device and data collecting system, described pressure mechanism respectively with institute The tool heads that push stated are connected with shear tool heads, and described pushes tool heads and shear tool heads under pressure mechanism effect It can independently move, blank is placed on described material carrier platform, described heater is located above material carrier platform, can be to blank Heated, it is described to push tool heads and shear tool heads are located at the top of described material carrier platform and heater, it is described Sensing device is arranged on described pressure mechanism and material carrier platform, and described sensing device is connected with described data collecting system Connect.
- 2. metal semi-solid thixotroping shaping simulation test device according to claim 1, it is characterised in that：Described pressure Mechanism provides pressure using hydraulic pressure or air pressure form.
- 3. metal semi-solid thixotroping shaping simulation test device according to claim 1, it is characterised in that：Described heating Device is heating coil, is sensing heating or resistance heating form.
- 4. metal semi-solid thixotroping shaping simulation test device according to claim 1, it is characterised in that：Described pushes Tool heads are two half cylindrical structures, and the gap between two semicolumns can adjust.
- 5. metal semi-solid thixotroping shaping simulation test device according to claim 1, it is characterised in that：Described shear For tool heads between described two half cylindrical structures for pushing tool heads, it is shaped as sheet.
- 6. metal semi-solid thixotroping shaping simulation test device according to claim 1, it is characterised in that：Described sensing Device includes temperature sensor, pressure sensor, displacement transducer and velocity sensor.
- 7. metal semi-solid thixotroping shaping simulation test device according to claim 6, it is characterised in that：Described pressure Sensor, displacement transducer and velocity sensor are arranged in pressure mechanism.
- 8. metal semi-solid thixotroping shaping simulation test device according to claim 6, it is characterised in that：Described temperature Sensor is thermocouple, is arranged at the middle part of material carrier platform, a part for thermocouple is exposed to material carrier platform top, perpendicular to material containing Platform.
- 9. the method for metal semi-solid thixotroping shaping simulated test is carried out using the device any one of claim 1-8, Comprise the following steps：(1) blank to be tested is placed on material carrier platform, and selected shear tool heads；(2) start heater to start to blank heating, while push tool heads and be pressed in by pressure mechanism with certain pressure On blank；(3) when blank heating is to semi-solid state, under the pressure for pushing tool heads, the thermocouple on material carrier platform is inserted into base Material is internal, and the temperature signal of diverse location inside blank is transferred into data collecting system；(4) after blank temperature reaches predetermined test value, shear tool heads are pressed by pressure mechanism with setting speed or setting Power is pushed, until blank is cut from centre, pressure, speed and displacement signal are transferred to by sensing device during pushing Data collecting system；(5) by converting shear temperature, shear tool heads specification, shear velocity or shear pressure, repeat step (1)-(4), obtain Obtain the data of one group of reflection material thixotropic property.
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| CN201410320446.2A CN105223075B (en) | 2014-07-04 | 2014-07-04 | A kind of metal semi-solid thixotroping shaping simulation test device and method |
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| CN105223075B true CN105223075B (en) | 2018-02-23 |
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| CN107084879A (en) * | 2017-05-25 | 2017-08-22 | 钢铁研究总院华东分院 | One kind customization warm forming experimental rig |
| CN108593539A (en) * | 2018-05-21 | 2018-09-28 | 崇州天智轻量化制造有限公司 | A kind of contact metal semi-solid thixotropic behavior measuring device and its measurement method |
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| CN2475483Y (en) * | 2001-04-24 | 2002-02-06 | 北京有色金属研究总院 | Thixotropic squeezing device |
| JP3732917B2 (en) * | 1997-03-05 | 2006-01-11 | 横浜ゴム株式会社 | Method for measuring drooping property of sealing material and measuring machine therefor |
| CN101850376A (en) * | 2010-06-08 | 2010-10-06 | 常州工学院 | Method and die for forward extrusion and variable diameter bending extrusion of magnesium alloy semi-solid billets |
| CN102507383A (en) * | 2011-11-02 | 2012-06-20 | 华南理工大学 | Capillary rheometer and method for measuring rheological properties of polymer materials |
| CN102944466A (en) * | 2012-11-29 | 2013-02-27 | 北京大学 | Device and method for testing mechanical property in ultrahigh temperature oxidation environment |
| CN203587450U (en) * | 2013-12-11 | 2014-05-07 | 天津市建达科技发展有限公司 | Test instrument for measuring shearing strength of bulk solid material |
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2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3732917B2 (en) * | 1997-03-05 | 2006-01-11 | 横浜ゴム株式会社 | Method for measuring drooping property of sealing material and measuring machine therefor |
| CN2475483Y (en) * | 2001-04-24 | 2002-02-06 | 北京有色金属研究总院 | Thixotropic squeezing device |
| CN101850376A (en) * | 2010-06-08 | 2010-10-06 | 常州工学院 | Method and die for forward extrusion and variable diameter bending extrusion of magnesium alloy semi-solid billets |
| CN102507383A (en) * | 2011-11-02 | 2012-06-20 | 华南理工大学 | Capillary rheometer and method for measuring rheological properties of polymer materials |
| CN102944466A (en) * | 2012-11-29 | 2013-02-27 | 北京大学 | Device and method for testing mechanical property in ultrahigh temperature oxidation environment |
| CN203587450U (en) * | 2013-12-11 | 2014-05-07 | 天津市建达科技发展有限公司 | Test instrument for measuring shearing strength of bulk solid material |
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Effective date of registration: 20190606 Address after: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: Research Institute of engineering and Technology Co., Ltd. Address before: No. 2, Xinjie street, Xicheng District, Beijing, Beijing Patentee before: General Research Institute for Nonferrous Metals |
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Effective date of registration: 20210802 Address after: 101407 No.11, Xingke East Street, Yanqi Economic and Technological Development Zone, Huairou District, Beijing Patentee after: Youyan metal composite technology Co.,Ltd. Address before: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee before: YOUYAN ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |