CN107192625A - Heat engine fatigue test method and the heat engine fatigue tester using this method - Google Patents
Heat engine fatigue test method and the heat engine fatigue tester using this method Download PDFInfo
- Publication number
- CN107192625A CN107192625A CN201710392990.1A CN201710392990A CN107192625A CN 107192625 A CN107192625 A CN 107192625A CN 201710392990 A CN201710392990 A CN 201710392990A CN 107192625 A CN107192625 A CN 107192625A
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- cavity plate
- blank
- heat engine
- punch
- mounting seat
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Classifications
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
-
- 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
Abstract
The present invention relates to a kind of heat engine fatigue test method and the heat engine fatigue tester of use this method, heat engine fatigue tester includes frame, the punch-pin mounting seat for installing simulation punch-pin is provided with frame, for installing the cavity plate mounting seat of simulation cavity plate and for driving cavity plate mounting seat with the generation relative motion of punch-pin mounting seat so that the drive device that simulation punch-pin and simulation cavity plate press to blank, testing machine also includes being used for the heater to blank heating, for the feeding device to heater friction feeding, for the handling equipment for unloading the blank between the blank feeding simulation punch-pin and simulation cavity plate after heating and for compression to be completed between simulation punch-pin and simulation cavity plate, meet in the actual forming process of blank, first heat, then it is moved on mould, and be molded by the mutual squeezing action of cavity plate and punch-pin, the complete and effective actual military service operating mode for meeting hot-work die, the heat engine fatigue results of hot-work die can accurately be tested out.
Description
Technical field
The present invention relates to a kind of heat engine fatigue test method and the heat engine fatigue tester of use this method.
Background technology
Hot-work die at work not only stress effect but also acted on by temperature.It is related to load cycle, temperature cycles,
The influence of many factors such as creep, fretting wear and environmental effect, so that the condition of work of hot-work die is complicated.And heat is made
One of the main failure forms of mould operationally are heat engine fatigue failures, and hot-work die is in the heat engine load in alternative cycle
Under operating mode, due to the collective effect by alternating thermal stress and mechanical stress, Mou Xiedian（Particularly on hot-work die working face
Point）Local permanent structure change is produced, hot tearing, tear, bonding are formed after certain cycle-index or is broken,
Fatigue damage will be caused.The complexity of military service operating mode, adds the difficulty analyzed the heat engine mechanism of fatigue, if in actual production
In the detection of experiment on fatigue properties is directly carried out to hot-work die, the test period is long, and cost is high, therefore it provides a kind of accurate pre-
The device that calorimetric makees mould heat engine fatigue life is just particularly important.
A kind of hot forming dies materials heat engine is disclosed in Authorization Notice No. is CN104568570A Chinese patent document
Fatigue experimental device, it includes dynamical system, heating system, transmission system, answering system and control test system, wherein passing through
Multiple electric heating tubes are directly heated to hot-work die, and hot-work die is met temperature cycles operating mode by cooling water；Together
When hot-work die is met the operating mode of load cycle by dynamical system, transmission system and answering system, and pass through and control test
System analyzes and processes come temperature data information and stress data information to hot-work die.But, lead in the experimental rig
The drift crossed on hydraulic press directly applies pressure to hot-work die, can only simulate the circulation loaded of hot-work die in hot stamping operation
Stress, it is impossible to simulate the stress variation of the circulation loaded of forging die and compression mod；Hot-work die is directly added by heat conducting pipe
Heat, is unsatisfactory in actual production by heat transfer between heated preforming material and hot-work die to Forming Die
Tool is heated；And actual pressure situation is implemented as by the mutual extruding between the punch-pin and cavity plate in hot-work die
Type, therefore the military service operating mode for the actual hot-work die of satisfaction that it can not effectively and completely, so as to the heat engine fatigue of hot-work die
The prediction accuracy effect that life-span is made is poor.
The content of the invention
It is an object of the invention to provide a kind of heat engine fatigue test method, with solve experimental rig of the prior art by
The problem of directly can not effectively meet the actual military service operating mode of hot-work die by drift extrusion die；The mesh of the present invention
Also reside in a kind of heat engine fatigue tester using the test method be provided.
To achieve the above object, the technical scheme of heat engine fatigue test method of the present invention is：
Heat engine fatigue test method, is continuously one by one to send between punch-pin and cavity plate the blank after heating and utilize simulation
Punch-pin and simulation cavity plate one by one press to simulate the actual military service operating mode of hot-work die.
The technical scheme of heat engine fatigue tester of the present invention is：
Heat engine fatigue tester, which includes being provided with frame, frame, simulates the punch-pin mounting seat of punch-pin for installing, for installing
Simulate the cavity plate mounting seat of cavity plate and for driving cavity plate mounting seat with the generation relative motion of punch-pin mounting seat so that simulation punch-pin
The drive device pressed with simulation cavity plate to blank, the testing machine also includes for the heater to blank heating, is used for
To the feeding device of heater friction feeding, for the blank after heating to be sent between punch-pin and cavity plate and for that will be pressurized
The handling equipment that the blank of completion is unloaded between punch-pin and cavity plate.
Heater is induction heating apparatus, induction heating apparatus include the induction coil being arranged in frame and for
The power supply that induction coil is powered.
Feeding device includes the material carrying mechanism for being arranged on the axial side of induction coil, and the material carrying mechanism includes being used to incite somebody to action
Blank along induction coil axis direction pass through induction coil retainer bar, the retainer bar axially movable during have supply
The upper material position that blank is put on retainer bar and the heating position for blank to be realized to heating through induction coil.
The confession blank that feeding device also includes being arranged in frame is in a row placed to realize the conveyer belt of continuous feeding, described
Propulsion arm be in upper material position when with the pushing end concordant with the transporting flat of conveyer belt.
Blank is column structure, and the size of each blank is consistent.
Heat engine fatigue tester also includes being arranged on the phase for detecting cavity plate mounting seat and punch-pin mounting seat in frame
The grating scale adjusted the distance.
Cavity plate mounting seat is fixed in frame by workbench, is provided with the workbench in inverted T-slot, inverted T-slot
Card sets the bolt for fixing cavity plate mounting seat.
Heat engine fatigue tester also includes the material jacking mechanism for being used to release the blank after extruding from simulation cavity plate, described
Material jacking mechanism includes being provided with the ejector beam for being arranged on the axial side of cavity plate mounting seat, cavity plate mounting seat to be oriented to for charging ram
Through the pilot hole so that the blank after the completion of compression to be ejected.
Heat engine fatigue tester also includes detecting system, and the detecting system includes being arranged on cavity plate mounting seat and/or convex
Pressure sensor in mould mounting seat.
Detecting system also includes the infrared radiation thermometer being arranged in frame and the thermocouple being arranged on cavity plate.
The beneficial effects of the invention are as follows：Compared to prior art, heat engine fatigue tester involved in the present invention passes through machine
What is set on frame is used to install the punch-pin mounting seat of simulation punch-pin, the cavity plate mounting seat of cavity plate is simulated for installing and for driving
Cavity plate mounting seat produces relative motion so as to simulate the drive device that punch-pin and simulation cavity plate press to blank with punch-pin mounting seat,
The testing machine also includes for the heater to blank heating, for the feeding device to heater friction feeding, used
In after by heating blank feeding simulation punch-pin and simulation cavity plate between and for by be pressurized complete blank from simulation punch-pin and
The handling equipment unloaded between simulation cavity plate, thus can meet in the actual forming process of blank, first by blank heating, then
On being moved between cavity plate and punch-pin, and high temperature blank is molded by the mutual squeezing action of cavity plate and punch-pin, completely had
The actual military service operating mode for meeting hot-work die of effect, can accurately test out the heat engine fatigue results of hot-work die.
Brief description of the drawings
Fig. 1 is one embodiment structural representation of the heat engine fatigue tester of the present invention；
Fig. 2 is Fig. 1 control principle drawing；
Fig. 3 is the structural representation of punch-die fixed system in Fig. 1.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment of the heat engine fatigue tester of the present invention, as shown in Figure 1 to Figure 3, the testing machine are used to test heat
Make the heat engine fatigue influence of mould, the testing machine includes frame, dynamical system, heating system, punch-pin and recessed are provided with frame
Mould fixed system and control test system.Wherein cavity plate and punch-pin fixed system include up and down be arranged in frame be located at it is upper
The punch-pin mounting seat 1 of side and the cavity plate mounting seat 2 positioned at downside, are provided with simulation punch-pin 9, in cavity plate in punch-pin mounting seat 1
Simulation cavity plate 8 is installed, frame includes workbench 27 and the guide pillar 6 being arranged on workbench 27, and guide pillar 6 has cloth in mounting seat 2
Extend up and down four in punch-pin mounting seat 1 and the surrounding of cavity plate mounting seat 2 are put, guide pillar 6 has good rigidity and intensity, energy
Accurate guide effect is enough played, frame also includes the cope plate 3 for being arranged on the upper end of guide pillar 6 and the lower end for being arranged on guide pillar 6
Lower template 4, the hydraulic extrusion press 7 that driving punch-pin mounting seat 1 is moved down is provided with the cope plate 3.Punch-pin mounting seat 1
Vertically extending in middle template 5, the plate face of the middle template 5 be provided with and guide pillar 6 is provided between hydraulic extrusion press 7
The pilot hole of matching, punch-pin mounting seat 1 coordinates guiding movement above and below realization by middle template 5 and the guiding of guide pillar 6.Cavity plate is installed
Seat 2 is fixed on workbench 27 by fixing nut 31 and fixing bolt 32, and specific is to be provided with cross on workbench 27
The inverted T-slot 30 of intersection, T-slot 30 coordinates with cavity plate mounting seat 2, is fixed by fixing bolt 32, workbench 27 and lower template 4
Between be provided with thermal insulation board 23.
The testing machine also includes being used for the heater to blank heating, and heater is arranged on above and below the axis in frame
The induction coil 10 of extension, heater also includes the high frequency electric source electrically connected with induction coil 10.
The heat engine fatigue tester also includes feeding device, and feeding device, which includes being arranged in frame, is located at induction coil
Lower section material carrying mechanism, material carrying mechanism include be provided for by blank to be extruded along induction coil axis direction pass through the line of induction
The retainer bar 11 of circle, the downside of retainer bar 11 is provided with for driving retainer bar 11 to move up and down the retainer through induction coil 10
Motor 12, and retainer bar 11 can rise to the upper surface of retainer bar 11 higher than simulation cavity plate 8 under the driving of retainer motor 12
The position of upper surface.The heater also includes infrared temperature measurement device, and the temperature signal of infrared temperature measurement device collection is integrated by circuit
Device is transported to temperature control system, and the temperature of blank is extruded for monitoring in real time.
Feeding device also includes being arranged on the side of retainer bar 11 and being additionally provided with being used to provide unheated treat to retainer bar 11
The motor for feeding that the conveyer belt 15 and driving conveyer belt 15 of extrusion billet are moved.Above-mentioned blank is column structure, is arranged side by side
Placed on a moving belt on conveyer belt 15, and by the support of the lower surface of blank, follow-up material carrying mechanism, feed mechanism and
Cutting agency can be designed by the size of columnar workpiece.
The testing machine also includes the high temperature blank 13 to be extruded after heating being moved to from retainer bar 11 on simulation cavity plate 8
Feed mechanism, feed mechanism includes the horizontal manipulator 16 in frame, and the flexible motor of driving manipulator 16
17, the manipulator 16 is located at the top of simulation cavity plate 8 upper surface, and the both sides of simulation cavity plate 8 are separately positioned on retainer bar 11.
The speed of service of above-mentioned feeding motor, retainer motor 12 and motor 17 by control system synergic adjustment,
Ensure that the high temperature blank 13 to be extruded after being heated can be sent in the die cavity of simulation cavity plate 8 in order.
Testing machine also includes the material jacking mechanism for being arranged on the lower section of lower template 4, and material jacking mechanism includes liftout hydraulic press 18 and set
The ejector beam 19 on liftout hydraulic press 18 is put, ejector beam 19 can move up under the driving of liftout hydraulic press 18 and stretch to mould
Intend in cavity plate 8, by the blank ejection simulation cavity plate 8 after deformation, above-mentioned liftout hydraulic press 18 is arranged on the downside of lower template 4
In liftout fixed plate 20, and it is connected by the realization of support column 21 between lower template 4, the lower end of support column 21 is provided with screw thread knot
Structure, the lower end of support column 21 is connected with the fixing nut 22 for being fixed on liftout hydraulic press 18 in liftout fixed plate 20.
Testing machine is cutting agency also including pusher, and pusher includes being arranged on the He of charging ram 28 of frame side
The pusher motor 29 for driving charging ram 28 to move, the pusher direction of charging ram 28 is in a clamp with the moving direction of manipulator 16
Angle, upper surface height of the height higher than simulation cavity plate 8 of charging ram 28, the blank being ejected after deformation can be released simulate
Punch-pin 9.
Testing machine also includes detecting system, and detecting system includes the thermocouple being arranged on simulation cavity plate 8, for detecting mould
The temperature in intracavitary portion, and by temperature Real-time Feedback to host computer, it is recessed that thermocouple stretches to simulation by small cavity respectively
Mould 8, the inside for simulating punch-pin 9, but die cavity is not penetrated；Also detecting system also includes the pressure sensing being arranged in middle template 5
Device 24, the size of loading force during extrusion billet is loaded is treated for measuring hydraulic extrusion press 7, and real by transmission line 26
When feedback to the computer main frame；Detecting system also includes the grating scale 25 being vertically arranged between cope plate 3 and lower template 4, is used for
Record the position of the middle template 5 in extrusion process.
The application method of the fatigue tester is：The normal temperature made blank 14 to be extruded is sent to by retainer by feed mechanism
On bar 11, retainer bar 11 makes the slowly rising, and receive induction coil of normal temperature blank 14 to be extruded under the driving of retainer motor 12
10 heating, the high temperature blank 13 to be extruded for making normal temperature blank 14 to be extruded gradually become preset temperature, now, retainer bar 11 is
Through rising to the position concordant with manipulator 16；Manipulator 16 catches high temperature blank 13 to be extruded under the driving of motor 17
Directly over the die cavity for reaching simulation cavity plate 8, manipulator 16 opens the die cavity for making high temperature blank 13 to be extruded fall into simulation cavity plate 8,
While manipulator 16 is moved, retainer bar 11 drops to initial position；Manipulator 16 continues to retreat a certain distance, it is to avoid with
Simulation punch-pin 9 in decline is contacted, and the now driving of hydraulic extrusion press 7 simulation punch-pin 9 declines, and blank 13 to be extruded to high temperature is carried out
After extruding and pressurize for a period of time, then hydraulic extrusion press 7 driving simulation punch-pin 9 rise to initial position, liftout hydraulic press 18
Driving ejector beam 19 is moved up, and the blank ejection that is extruded after deformation is arrived into the position concordant with the upper surface for simulating cavity plate 8,
Now, charging ram 28 will be extruded blank release under the driving of pusher motor 29, and afterwards, charging ram 28 is in pusher motor 29
It is return back under driving in initial position, whole process, thermocouple, grating scale 25, pressure sensor 24 are recorded in real time, and will
Data are shown by the incoming computer terminal of data in real time, and this process is a circulation, and has counter to be recorded, certain
After the experiment in cycle, punch-pin and simulation cavity plate 8 are unloaded into progress surface observation.
In other embodiments, punch-pin and cavity plate can be oppositely arranged；Either hydraulic extrusion press is arranged on downside to push away
Dynamic cavity plate mounting seat is moved upwards；Heater can be set directly at the fire for passing through and being heated for normal temperature blank by frame
Stove；Feed mechanism and cutting agency may be configured as passing through multiple motor controls by same manipulator.
Heat engine fatigue test method, its specific implementation process is consistent with the application method of above-mentioned heat engine fatigue tester,
No longer it is developed in details.
Claims (10)
1. heat engine fatigue test method, it is characterised in that this method is that the blank after heating is one by one continuously sent into simulation is convex
Between mould and simulation cavity plate and using simulating punch-pin and simulation cavity plate one by one presses and simulates the actual military service work of hot-work die
Condition.
2. the heat engine fatigue tester for implementing heat engine fatigue test method as claimed in claim 1, it is characterised in that：Bag
Punch-pin mounting seat, the cavity plate mounting seat for installing simulation cavity plate for installing simulation punch-pin are provided with including rack, frame
With for driving cavity plate mounting seat and punch-pin mounting seat to produce relative motion so that simulation punch-pin and simulation cavity plate are to blank pressure
Drive device, the testing machine also includes being used for the heater of blank heating, for heater friction feeding
Feeding device, for the blank after heating to be sent between punch-pin and cavity plate and for the blank that completes of being pressurized from punch-pin and recessed
The handling equipment unloaded between mould.
3. heat engine fatigue tester according to claim 2, it is characterised in that：The heater fills for sensing heating
Put, induction heating apparatus includes the induction coil being arranged in frame and the power supply for being powered to induction coil.
4. heat engine fatigue tester according to claim 3, it is characterised in that：The feeding device includes being arranged on sensing
The material carrying mechanism of the axial side of coil, the material carrying mechanism includes being used for blank is passed through into sensing along induction coil axis direction
The retainer bar of coil, the retainer bar axially movable during there is the upper material position being put on retainer bar for blank and be used for
Blank is realized to the heating position of heating through induction coil.
5. heat engine fatigue tester according to claim 4, it is characterised in that：The feeding device also includes being arranged on machine
Confession blank on frame is in a row placed to realize the conveyer belt of continuous feeding, and the propulsion arm has and conveyer belt when being in upper material position
The concordant pushing end of transporting flat.
6. the heat engine fatigue tester according to any one of claim 2 ~ 5, it is characterised in that：The blank is column knot
Structure, the size of each blank is consistent.
7. the heat engine fatigue tester according to any one of claim 2 ~ 5, it is characterised in that：The heat engine fatigue test
Machine also includes being arranged on the grating scale of the relative distance for detecting cavity plate mounting seat and punch-pin mounting seat in frame.
8. the heat engine fatigue tester according to any one of claim 2 ~ 5, it is characterised in that：The cavity plate mounting seat is led to
Cross workbench to be fixed in frame, be provided with to block to set in inverted T-slot, inverted T-slot on the workbench and fix cavity plate mounting seat
Bolt.
9. the heat engine fatigue tester according to any one of claim 2 ~ 5, it is characterised in that：The heat engine fatigue test
Machine also includes the material jacking mechanism for being used to release the blank after extruding from simulation cavity plate, and the material jacking mechanism is recessed including being arranged on
It is provided with and is guided through for charging ram with by after the completion of compression in the ejector beam of the axial side of mould mounting seat, cavity plate mounting seat
The pilot hole of blank ejection.
10. the heat engine fatigue tester according to any one of claim 2 ~ 5, it is characterised in that：The heat engine fatigue examination
Testing machine also includes detecting system, and the pressure that the detecting system includes being arranged in cavity plate mounting seat and/or punch-pin mounting seat is passed
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392990.1A CN107192625B (en) | 2017-05-27 | 2017-05-27 | Heat engine fatigue testing method and heat engine fatigue testing machine using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392990.1A CN107192625B (en) | 2017-05-27 | 2017-05-27 | Heat engine fatigue testing method and heat engine fatigue testing machine using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107192625A true CN107192625A (en) | 2017-09-22 |
| CN107192625B CN107192625B (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710392990.1A Active CN107192625B (en) | 2017-05-27 | 2017-05-27 | Heat engine fatigue testing method and heat engine fatigue testing machine using same |
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| Country | Link |
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| CN (1) | CN107192625B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907563A (en) * | 2017-12-28 | 2018-04-13 | 上汽通用五菱汽车股份有限公司 | A kind of drop stamping measurement frock and its application method |
| CN112129631A (en) * | 2020-09-16 | 2020-12-25 | 浙江久立特材科技股份有限公司 | Cold deformation die working curve design method based on full-size strain strengthening |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907563A (en) * | 2017-12-28 | 2018-04-13 | 上汽通用五菱汽车股份有限公司 | A kind of drop stamping measurement frock and its application method |
| CN107907563B (en) * | 2017-12-28 | 2023-08-29 | 上汽通用五菱汽车股份有限公司 | Hot stamping measurement tool and application method thereof |
| CN112129631A (en) * | 2020-09-16 | 2020-12-25 | 浙江久立特材科技股份有限公司 | Cold deformation die working curve design method based on full-size strain strengthening |
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|---|---|
| CN107192625B (en) | 2020-04-10 |
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