CN106769451B - A kind of hot-work die heat engine fatigue experimental device - Google Patents
A kind of hot-work die heat engine fatigue experimental device Download PDFInfo
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- CN106769451B CN106769451B CN201611072879.6A CN201611072879A CN106769451B CN 106769451 B CN106769451 B CN 106769451B CN 201611072879 A CN201611072879 A CN 201611072879A CN 106769451 B CN106769451 B CN 106769451B
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- work die
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of hot-work die heat engine fatigue experimental devices, the experimental rig includes hot-work die mounting base and preforming material block mounting base, the experimental rig further includes the power mechanism for driving hot-work die mounting base and the preforming material relative motion of block mounting base and back movement, the experimental rig further includes for the heating device to the preforming material block heating in preforming material block mounting base, heating device heats preforming material block, then power mechanism drives it to press with hot-work die and cooperates, realize the heat transfer between preforming material block and hot-work die, hot-work die is set to be heated up, with this come realize hot-work die by mechanical stress circulation and temperature cycles real working condition simulation, realize hot-work die alternation mechanical stress state and suffered alternation thermal force state suffered under actual motion condition , reliability is higher, and stability is preferable, measured value also more approaching to reality situation the characteristics of.
Description
Technical field
The present invention relates to a kind of hot-work die heat engine fatigue experimental devices.
Background technique
Hot-work die is divided into hot extruding die, hot-forging die and compression mod, at work not only stress effect but also by temperature
Effect, it is related to the influence of many factors such as load cycle, temperature cycles, creep, fretting wear and environmental effect, to make
The operating condition of hot-work die complicates.Research shows that the main failure forms of hot-work die at work first is that heat engine is tired
Failure.Hot-work die is under the heat engine load working condition in alternative cycle, due to the work by alternating thermal stress and mechanical stress
With the remittance on certain points especially working face on hot-work die generates the permanent structure variation of part, follows in certain
It forms hot tearing, tearing, bonding after ring number or is broken, it will lead to fatigue damage；And its severe service condition is past
Toward causing research and analysis more difficult and complicated, to directly carry out experiment on fatigue properties to hot-work die in actual production
Detection, the test period is long, higher cost, therefore the device for providing a kind of Accurate Prediction hot-work die heat engine fatigue life is just shown
It obtains particularly important.
A kind of hot forming dies materials heat is disclosed in the Chinese patent document that the notification number of authorization is CN104568570A
Machine fatigue experimental device comprising dynamical system, heating system, transmission system, answering system and control test macro, wherein leading to
It crosses multiple electric heating tubes directly to heat hot-work die, and so that hot-work die is met temperature cycles operating condition by cooling water；
Meanwhile hot-work die is set to meet the operating condition of load cycle by dynamical system, transmission system and answering system, and survey by control
Test system come to hot-work die temperature data information and stress data information be analyzed and processed.But in the experimental rig
Pressure directly is applied to hot-work die by the formed punch on hydraulic press, can only simulate in hot stamping operation that hot-work die is loaded to follow
The stress of ring cannot simulate the stress variation of the circulation loaded of forging die and compression mod；It is direct to hot-work die by heat conducting pipe
Heating is unsatisfactory for passing through in actual production the heat transfer between the preforming material and hot-work die being heated and makees to heat
Mold is heated, therefore its military service operating condition that cannot effectively meet practical hot-work die, thus to the heat engine of hot-work die
The prediction accuracy effect that fatigue life is made is poor.
Summary of the invention
The purpose of the present invention is to provide a kind of hot-work die heat engine fatigue experimental devices, to solve examination in the prior art
Experiment device cannot have due to directly heating to hot-work die, and the formed punch for being not belonging to preforming material presses to hot-work die
The problem of practical military service operating condition for meeting hot-work die of effect.
To achieve the above object, a kind of technical solution of hot-work die heat engine fatigue experimental device of the present invention is:
A kind of hot-work die heat engine fatigue experimental device, including hot-work die mounting base and preforming material block mounting base,
The experimental rig further include for drive hot-work die mounting base and preforming material block mounting base relative motion with it is mutually unlucky
Dynamic power mechanism, the experimental rig further include for heating to the preforming material block in preforming material block mounting base
Heating device.
Heating device includes heating furnace, and the power mechanism is realized in advance by being driven cooperation with preforming material block mounting base
Opposite press and opposite disengaging between moulding material block and hot-work die, the preforming material block mounting base setting are being heated
In furnace, when the preforming material block is separated with hot-work die, power mechanism can drive preforming material block mounting base to be back to
In heating furnace.
Power mechanism is placed in outside heating furnace, and the output end of power mechanism drives preforming material block mounting base to move by guide rod
It is dynamic.
String is equipped with force side pressure sensor on guide rod, and the experimental rig further includes control section, and control section includes
With the controller of force side pressure sensor sampling connection, the controller and power mechanism control are connected.
Power mechanism includes the hydraulic device mobile for drive leader, is connected between the hydraulic device and controller
Hydraulic control device.
It is provided on the side wall opposite with the side that guide rod passes through on heating furnace and to be passed through for preforming material block mounting base
Channel is provided with fire door on the channel, and control is connected with fire door driving on the fire door.
The force side pressure sensor with controller sampling connection is provided in hot-work die mounting base.
Experimental rig further include for the cooling device that hot-work die is cooling, the cooling device include cooling spray and
With the cooling pressure generation device of cooling spray control connection, the cooling pressure generation device and controller control are connected.
Experimental rig further includes monitoring part, and monitoring part further includes being connect with controller signals for hot-work die
The microscope of real-time monitoring is carried out, is connected with microscope mobile device on the microscope.
Monitoring part further includes the counting device connecting with controller signals, and the counting device includes adopting with hydraulic device
The counter of sample connection.
The beneficial effects of the present invention are: compared with the prior art, hot-work die heat engine fatigue test according to the present invention
Device, including hot-work die mounting base and preforming material block mounting base, the experimental rig further include for driving Forming Die
Tool mounting base and preforming material block mounting base relative motion are to realize that it is dynamic that hot-work die and the press of preforming material block cooperate
Force mechanisms, the experimental rig further include for filling to the heating of the preforming material block heating in preforming material block mounting base
Set, by setting heating device to preforming material block heat, preforming material block heating after by power mechanism driving with
Hot-work die press cooperation, while realizing the heat transfer between preforming material block and hot-work die, rise hot-work die
Temperature, with this come realize hot-work die by mechanical stress circulation and temperature cycles real working condition simulation, realize hot-work die exist
Suffered alternation mechanical stress state and suffered alternation thermal force state under actual motion condition, reliability is higher, stability
Preferably, measured value also more approaching to reality situation the characteristics of.
Detailed description of the invention
Fig. 1 is the specific embodiment structural schematic diagram of hot-work die heat engine fatigue experimental device of the present invention.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of hot-work die heat engine fatigue experimental device of the invention, as shown in Figure 1, the experimental rig includes
Power mechanism, heating device, cooling device and control monitoring device further include pacifying for installing the hot-work die of hot-work die 9
Seat 19 is filled, power mechanism applies alternation mechanical stress to hot-work die 9 by driving preforming material block, connects on power mechanism
There is the power mechanism control device 11 connecting with computer 22 i.e. controller signals, is connected with liquid on power mechanism control device 11
Pressure device 10, power mechanism control device 11 can be flow control valve, can be motor or be oil pump, hydraulic device 10
12 fore-aft motion of drive leader, guide rod 12 slide on the guide rail 13 being arranged in outside heating furnace, and wherein guide rod 12 is mutual by two
The connecting rod of docking forms, and is folded with force side pressure sensor 8 between two connecting rods, the force side pressure sensor 8
It samples and connects with computer 22, be connected with preforming material block mounting base 6, preforming material block mounting base in the end of guide rod 12
Preforming material block 7 is provided on 6, hot-work die mounting base 19 is arranged in the movement routine of guide rod 12, preforming material block 7
Back-and-forth motion driven by the power mechanism can realize press cooperation and be separated with hot-work die 9, and then realize hot-work die 9
Alternation mechanical stress circulation.Power mechanism control device 11 is adjusted by acquiring the data of force side pressure sensor 8, is made
Power mechanism pushes preforming material block 7 and the press of hot-work die 9 to cooperate, and control hot-work die 9 and preforming material block 7 it
Between pressure, and be able to maintain the regular hour after the pressure that pressure reaches setting, handed over sufficiently simulating hot-work die 9
Become the true service condition of mechanical stress circulation, and preforming material block 7 can be driven by the power mechanism after pressure processing
It is separated with hot-work die 9.
Device for measuring force includes the stress connecting with hot-work die mounting base signal being arranged in hot-work die mounting base 19
Side pressure force snesor 18, force side pressure sensor 18 and the sampling of computer 22 connect, and mainly detection hot-work die 9 is loading
The size and situation of change of loading force in the process, and it is transferred to computer, to determine the size and change of the pressure valve of hot-work die 9
Change process.
Heating device is mainly used for heating preforming material block 7 comprising is arranged in the movement routine of guide rod 12
Heating furnace 1, the setting of preforming material block 7 is provided in heating furnace 1, on the front-rear side walls of heating furnace 1 wears for the movement of guide rod 12
Capable channel is provided with fire door 5 on the side wall of hot-work die mounting base 19 on heating furnace 1, is provided with fire door on fire door 5
Driving 4, fire door driving 4 are connect with 22 signal of computer, and temperature measuring equipment 2 and temperature regulating device 3 are additionally provided in heating furnace 1, and
Temperature regulating device 3 is connect with 22 signal of computer, heating furnace 1 by computer 22 control temperature regulating device 3 to preforming material block 7 into
Row heating, heat form can be radiant heating or Convective Heating, when temperature measuring equipment 2 shows that the temperature of preforming material block 7 reaches
To after set temperature, computer 22 controls fire door driving 4, opens 4 control fire door 5 of fire door driving, is ready for power mechanism
Preforming material block 7 is driven to pass through heating furnace 1 and the progress pressure processing of hot-work die 9.
Cooling device is mainly used for Forming Die isolated with preforming material block 7 after by 7 heat transfer of preforming material block
Tool 9 is cooled down comprising cooling spray 15 and provides cold the cooling pipe 16 connecting with cooling spray 15 to cooling pipe 16
But the cooling pressure generation device 17 of pressure medium, in this embodiment, cooling pressure medium are water, by hot-work die 9
Water spray is allowed to cool, and in other embodiments, cooling pressure medium can be set to oil or high pressure cooling gas, by oil spout or
Air blowing is allowed to cool, can be using a variety of strong cold or the natural type of cooling.Cooling pressure generation device is controlled by computer 22
17 such as high compressed air tanks, inflating pump etc., to realize the cooling to hot-work die 9.
Control monitoring device is mainly used for carrying out other each devices of experimental rig the data of control and temperature, pressure
Analysis comprising computer 22 further includes for the real-time monitoring device in situ with the sampling connection of computer 22, this is in situ real-time
Monitoring device includes optical microscopy 20 and optical microscopy mobile device 21, mainly monitors warp by optical microscopy 20
After heating power alternate stress circulation after a period of time, face crack, oxidative phenomena of hot-work die 9 etc., the optical microscopy 20
It samples and connects with computer 22, the image shown in microscope 20 is analyzed by computer 22.
Controlling detection device further includes die life recording device comprising the counter with hydraulic device sampling connection
14, hot-work die 9 can be calculated under cycling condition by counting the cycle-index of 10 drive leader 12 of hydraulic device
The number of working cycles.Counter 14 and the sampling of computer 22 connect, and cycle-index are analyzed by computer 22, and then calculate
The Thermomechanical Fatigue Life of hot-work die 9.
When in use, preforming material block 7 is heated by heating device, after the temperature for pre-setting its satisfaction,
It pushes preforming material block 7 to pass through heating furnace 1 by power mechanism, the preforming material block 7 after heating is pressed against into Forming Die
On tool 9, heat transfer makes hot-work die 9 heat up between preforming material block 7 and hot-work die 9, and measures heat by device for measuring force
The pressure valve for making mold 9 meets actual operating condition after pressing the regular hour, and power mechanism drives preforming material block 7 anti-
To being moved in heating furnace 1, preforming material block 7 is separated with hot-work die 9, then by cooling device that hot-work die 9 is cold
But, this process is a circulation, and in the process, hot-work die 9 is by alternation mechanical stress circulation and alternating thermal stress circulation
Meet actual operating condition, can accurate good 9 thermal mechanical fatigue military service situation of simulation hot-work die, counted by counter 14
The alternate stress cycle-index of hot-work die 9 is calculated, and then determines its Thermomechanical Fatigue Life, by microscope 20 come real-time monitoring
The seminess on 9 surface of hot-work die, measured value more approaching to reality situation, high reliablity, and it is simply square to replace mold materials
Just, it is convenient to operate, and is suitable for Basic Experiment Study.
In other implementations, power mechanism can be set to the other forms in addition to hydraulic-driven, such as actuated by cams, bullet
Spring energy storage driving etc. is discharged to drive guide rod mobile by the rotation of cam or the potential energy of spring, and then drives preforming material
The press of block and hot-work die cooperates；It can be not provided with force side pressure sensor, directly by the pressure sensor of force side
Data adjust power mechanism control device；Counter can sample connection with guide rod or drive sampling connection with fire door；Add
Hot stove can be set to single channel, after the heating will be pre- out of heating furnace channel by setting multiple degrees of freedom for power mechanism
Moulding material block takes out, and drives preforming material block and hot-work die to press and cooperate；The computer for controlling monitoring device can be with
It is one, or multiple and connect respectively with the control device of each device；Guide rod may be alternatively provided as that heating can be passed in and out
The slider-crank mechanism of furnace；Power device can act on hot-work die side, can also drive preforming material block and heat simultaneously
Make mold it is close to each other and be detached from；Heating device can be set to include the electric heating tube being connected on preforming material block, directly
It connects and preforming material block is heated；Two connecting rods in guide rod can be set to the form being mutually inserted, by the end pressure that exerts a force
Sensor is arranged between the press end of two connecting rods.
Claims (8)
1. a kind of hot-work die heat engine fatigue experimental device, it is characterised in that: including hot-work die mounting base and preforming material
Block mounting base, the experimental rig further include for driving hot-work die mounting base and preforming material block mounting base relative motion
With the power mechanism of back movement, the experimental rig further includes for the preforming material in preforming material block mounting base
The heating device of block heating；The heating device includes heating furnace, the power mechanism by with preforming material block mounting base
It is driven cooperation and realizes pressing between preforming material block and hot-work die relatively and opposite disengaging, the preforming material block peace
Fill seat setting in heating furnace, when the preforming material block is separated with hot-work die, power mechanism can drive preforming material
Block mounting base is back in heating furnace；The power mechanism is placed in outside heating furnace, and the output end of power mechanism is driven by guide rod
Preforming material block mounting base is mobile；The outside of the separate power mechanism of heating furnace is arranged in the hot-work die mounting base, and
And in the movement routine of guide rod, the back-and-forth motion driven by the power mechanism of preforming material block；Power mechanism push in advance at
Type material block passes through heating furnace, and the preforming material block after heating is pressed against on hot-work die.
2. hot-work die heat engine fatigue experimental device according to claim 1, it is characterised in that: string is equipped on the guide rod
Force side pressure sensor, the experimental rig further include control section, and control section includes adopting with force side pressure sensor
The controller of sample connection, the controller and power mechanism control connect.
3. hot-work die heat engine fatigue experimental device according to claim 2, it is characterised in that: the power mechanism includes
The hydraulic device mobile for drive leader, is connected with hydraulic control device between the hydraulic device and controller.
4. hot-work die heat engine fatigue experimental device according to claim 2, it is characterised in that: on the heating furnace with lead
It is provided with the channel passed through for preforming material block mounting base on the opposite side wall in the side that bar passes through, is provided on the channel
Fire door, control is connected with fire door driving on the fire door.
5. hot-work die heat engine fatigue experimental device according to claim 2, it is characterised in that: the hot-work die installation
The force side pressure sensor with controller sampling connection is provided on seat.
6. hot-work die heat engine fatigue experimental device according to claim 2, it is characterised in that: the experimental rig also wraps
It includes for the cooling device that hot-work die is cooling, the cooling device includes cooling spray and connects with cooling spray control
Cooling pressure generation device, the cooling pressure generation device and controller control connect.
7. hot-work die heat engine fatigue experimental device according to claim 2, it is characterised in that: the experimental rig also wraps
Monitoring part is included, monitoring part further includes being connect with controller signals for carrying out the micro- of real-time monitoring to hot-work die
Mirror is connected with microscope mobile device on the microscope.
8. hot-work die heat engine fatigue experimental device according to claim 7, it is characterised in that: monitoring part further include with
The counting device of controller signals connection, the counting device include the counter with hydraulic device sampling connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611072879.6A CN106769451B (en) | 2016-11-29 | 2016-11-29 | A kind of hot-work die heat engine fatigue experimental device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611072879.6A CN106769451B (en) | 2016-11-29 | 2016-11-29 | A kind of hot-work die heat engine fatigue experimental device |
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| Publication Number | Publication Date |
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| CN106769451A CN106769451A (en) | 2017-05-31 |
| CN106769451B true CN106769451B (en) | 2019-04-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769577A (en) * | 2016-11-29 | 2017-05-31 | 河南科技大学 | A kind of hot-work die frictional wear test device |
| CN108106433B (en) * | 2017-10-27 | 2019-09-27 | 昆明理工大学 | A kind of heating and heat-insulating device of heat fatigue simulator stand |
| CN108362601A (en) * | 2018-02-06 | 2018-08-03 | 山东理工大学 | It is a kind of machinery force environment under thermal fatigue test device |
| CN112557196A (en) * | 2020-12-17 | 2021-03-26 | 山西理工红日节能服务有限公司 | Quality inspection method for underground directly-buried pipeline |
| CN113495035A (en) * | 2021-08-02 | 2021-10-12 | 深圳市国科华屹轴承有限公司 | Thermal fatigue resistance evaluation testing machine for simulating service environment of forging die |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7059198B2 (en) * | 2004-08-17 | 2006-06-13 | Amitkumar N. Dharia | Apparatus to determine ability of plastic material to be shaped by thermoforming process |
| CN201004051Y (en) * | 2007-02-08 | 2008-01-09 | 中国科学院化学研究所 | A micro extension instrument for infrared spectrum instrument |
| CN102519791B (en) * | 2011-12-13 | 2013-07-31 | 河海大学 | Mechanical fatigue tester for test piece |
| CN102866066B (en) * | 2012-09-17 | 2015-07-22 | 中国科学院力学研究所 | Rotating bending fatigue test device and method with axial load control function |
| CN105784527B (en) * | 2016-05-04 | 2018-08-07 | 武汉理工大学 | A kind of Acceleration study device and method of thermal stress coupling fatigue/abrasion |
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Application publication date: 20170531 Assignee: Luoyang Bote Automation Engineering Co., Ltd. Assignor: Henan University of Science and Technology Contract record no.: X2019980000528 Denomination of invention: Hot working die thermo-mechanical fatigue tester Granted publication date: 20190419 License type: Common License Record date: 20191115 |
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