CN2828797Y - Induction heating type metal material cold-het fatigue testing device - Google Patents
Induction heating type metal material cold-het fatigue testing device Download PDFInfo
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- CN2828797Y CN2828797Y CN 200520042021 CN200520042021U CN2828797Y CN 2828797 Y CN2828797 Y CN 2828797Y CN 200520042021 CN200520042021 CN 200520042021 CN 200520042021 U CN200520042021 U CN 200520042021U CN 2828797 Y CN2828797 Y CN 2828797Y
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Abstract
The utility model relates to a cold and hot fatigue testing device for metal materials, which is an induction heating type cold and hot fatigue testing device for metal materials. The output part of a thyristor intermediate frequency power supply is connected with an intermediate frequency transformer, and the output end of which is connected with an inductor. The output part of a thermoscope is connected with a control device after the thermoscope measures the temperature of samples in the inductor. The control device comprises an industrial controller. The utility model is characterized in that a coil of the inductor is composed of flat copper pipes, an outer copper row and an inner copper row. An opening which is arranged in the middle of the flat copper pipe is communicated with circulating cooling water, and an upper flat copper pipe and a lower flat copper pipe are clamped between the outer copper row and the inner copper row. A cavity which is surrounded by the outer copper row, the inner copper row, the upper flat copper pipe and the lower flat copper pipe is a spray cooling water pipe, and a plurality of spray cooling holes are arranged on the wall of the inner copper row of the spray cooling water pipe which is externally connected with a spray electromagnetic valve which is controlled by output signals of an industrial controller. The utility model can realize fast heating and automatic spray cooling. The adoption of an infrared thermoscope and the industrial controller realizes the precise control of the heating temperature and the cooling temperature of samples.
Description
(1) technical field
The utility model relates to the cold and hot fatigue experimental device of metal material, relates in particular to the cold and hot fatigue experimental device of metal material that adopts Frequency Induction Heating.
(2) background technology
The standard of metal current material cold-heat fatigue tester does not also have.After the employing flame heat and induction heating that the cold and hot torture test of existing metal material has, sample moved quickly into to have in the chilled water unit cool off, move to the heating arrangement heating again, cooling again, test back and forth so repeatedly; Also have by the gear quenching lathe, adopt and manually between inductive coil and chilled water, to carry out cyclic test, labour intensity is big like this, test temperature and time control accuracy are relatively poor, test error is big.
(3) summary of the invention
The purpose of this utility model is to provide a kind of induction heating type metal material cold and hot fatigue experimental device, but this cold and hot fatigue experimental device Fast Heating and automatic spray cooling, adopt infrared thermometer and industrial computer to realize the accurate control of sample heating-up temperature and chilling temperature, thereby it is relatively poor to have overcome existing cold and hot fatigue experimental device test temperature and time control accuracy, the defective that test error is big.
The utility model is achieved in that the cold and hot fatigue experimental device of a kind of induction heating type metal material, comprise inductor, thyristor intermediate frequency electric source, I.F.T., temperature measurer, control device, thyristor intermediate frequency electric source output connects I.F.T., I.F.T. output termination inductor, temperature measurer connects control device to output after being loaded on the sample thermometric in the inductor, control device comprises industrial computer, the industrial computer output signal connects rectifier control circuit and inverter control circuit, rectifier control circuit and inverter control circuit output connect thyristor intermediate frequency electric source, it is characterized in that inductor coil is by flat copper pipe, outer copper line, inner copper line is formed, the flat copper pipe middle opening leads to recirculated cooling water, two flat copper pipes have up and down been clamped between outer copper line and inner copper line, outer copper line, inner copper line and up and down the cavity that surrounds of two flat copper pipes be spraying cooling water pipe, on the inner copper line wall of spraying cooling water pipe, have several spray cooling holes; The external spraying electromagnetic valve of spraying cooling water pipe, spraying electromagnetic valve is controlled by the industrial computer output signal.
The above-mentioned cold and hot fatigue experimental device of induction heating type metal material, described industrial computer output signal connects counter, and counting is opened in inductor heating and spraying electromagnetic valve.
The above-mentioned cold and hot fatigue experimental device of induction heating type metal material, described temperature measurer are two infrared thermometers, survey heating-up temperature for one, and 200 to 1000 ℃ of temperature ranges are surveyed chilling temperature, 0 to 500 ℃ of temperature range for one.
The utility model is by variable-frequency power sources and inductor, the concentration of energy of intermediate frequency power supply is realized Fast Heating on the test button surface, utilize the infrared thermometer industrial computer to realize the accurate control of sample heating-up temperature, realize the accurate fast control of sample cooling in conjunction with the automatic spray quench systems simultaneously.Cold and hot fatigue state when therefore this test unit can more accurately be simulated metallurgical equipment, spare part work, can carry out the extremely cold and hot fatigure failure comparison test of multiple material, in addition, in order accurately to simulate the real load state of workpiece, this testing machine can allow workpiece when bearing cold and hot fatigue load, stack mechanical stretching fatigue load.
But the utility model Fast Heating and automatic spray cooling, adopt infrared thermometer and industrial computer to realize the accurate control of sample heating-up temperature and chilling temperature, thereby it is relatively poor to have overcome existing cold and hot fatigue experimental device test temperature and time control accuracy, the defective that test error is big.
(4) description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the cold and hot fatigue experimental device electric control theory of the utility model induction heating type metal material figure;
Fig. 2 is the sensor structure synoptic diagram.
Among the figure: 1 flat copper pipe, 2 recirculated cooling waters, 3 spraying cooling water pipes, 4 spray cooling holes, 5 inner copper lines, 6 outer copper lines, 7 industrial computers, 8 rectifier control circuits, 9 inverter control circuits, 10 thyristor intermediate frequency electric sources, 11 I.F.T.s, 12 inductors, 13 infrared thermometers, 14A/D converter.
(5) embodiment
Referring to Fig. 1, Fig. 2, the cold and hot fatigue experimental device of a kind of induction heating type metal material comprises inductor 12, thyristor intermediate frequency electric source 10, I.F.T. 11, temperature measurer 13, control device.Thyristor intermediate frequency electric source 10 outputs connect I.F.T. 11, I.F.T. 11 output termination inductors 12.Output connect control device after 13 pairs of temperature measurers were loaded on sample thermometric in the inductor 12, and temperature measurer 13 is two infrared thermometers, surveys heating-up temperature for one, and 200 to 1000 ℃ of temperature ranges are surveyed chilling temperature, 0 to 500 ℃ of temperature range for one.Control device comprises industrial computer 7, and industrial computer 7 output signals connect rectifier control circuit 8 and inverter control circuit 9, and rectifier control circuit 8 and inverter control circuit 9 outputs connect thyristor intermediate frequency electric source 10.Inductor 12 coils are made up of flat copper pipe 1, outer copper line 6, inner copper line 5, flat copper pipe 1 middle opening leads to recirculated cooling water 2,5 of outer copper line 6 and inner copper lines have clamped two flat copper pipes 1 up and down, outer copper line 6, inner copper line 5 and up and down the cavity that surrounds of two flat copper pipes 1 be spraying cooling water pipe 3, on inner copper line 5 walls of spraying cooling water pipe 3, have several spray cooling holes 4; Spraying cooling water pipe 3 external spraying electromagnetic valves, spraying electromagnetic valve is controlled by industrial computer 7 output signals.Industrial computer 7 output signals connect counter, and counting is opened in inductor 12 heating and spraying electromagnetic valve.
Referring to Fig. 1, by variable-frequency power sources, the AC power of three-phase 50Hz is converted to single-phase 500Hz-2500Hz voltage of intermediate frequency, this voltage is connected on the I.F.T. 11, by transformer 11 decompression and flow increasing effects, can be on less relatively unit area the concentration of energy of intermediate frequency power supply.By inductor 12, can make the test button self-heating that is placed in the inductor 12, measure the temperature of sample by infrared thermometer 13.Reach the temperature of artificial setting when temperature after, intermediate frequency power supply 10 stops heating, and at this moment chilled water will be to the sample spray cooling by spraying electromagnetic valve, when temperature is lower than 100 degree when following, will heat once more, and repeat number is inferior.
Below critical piece is described in detail:
1. thyristor intermediate frequency electric source: thyristor intermediate frequency electric source 10 is a kind of efficient frequency converters that the three-phase main-frequency electric energy are converted to the electric energy of single-phase a certain frequency.Adopt the unsteady flow pattern of handing over orthogonal; promptly AC energy is converted to direct current energy by three-phase controllable silicon full-controlled rectifier bridge; flat ripple effect by reactor; direct current energy is flowed to single-phase inverter; inverter converts the AC energy of a certain required frequency again to, by control three-phase commutation bridge thyristor operating angle, just can change the height of output dc voltage; also can make fully controlled bridge be operated in rectification state (duty), active inversion state (stopped status).
By controllable silicon SCR 7,8, SCR9,10 alternate conduction and shutoff, can on load I.F.T. 11, obtain the voltage of intermediate frequency of a certain frequency, because the natural power factor of I.F.T. 11 is lower, general all about 0.1, so need capacitor C that certain intermediate frequency offset current is provided, so that the load normal and continuous operation.Adjustment load output frequency for convenience adds thermal effect preferably to reach, and I.F.T. 11 adopts once, the secondary number of turn all can be adjusted.A number of turn is that 15～6 circles are adjustable, and the secondary number of turn 1 circle, 2 circles are adjustable.By the adjusting of a number of turn, can change the output voltage and the whole loaded impedance of transformer 11 secondaries like this, to reach best heated condition.
2. infrared thermometer is 0～500 ℃ because the temperature-measuring range of an infrared thermometer 13 does not cover 100～1000 ℃ so adopted 13, one of two infrared thermometers, and one is 200～1000 ℃.One is used for measuring heating-up temperature specially, measures chilling temperature specially for one.Displaying Meter adopts the Intelligent Digital Displaying Meter, and heating-up temperature can be set, and also can show heating-up temperature, and have 4～20mm current signal or 0～+ output of 5V voltage signal, one group of switching value signal output is also arranged.The temperature measurement signal of infrared thermometer 13 is imported industrial computer 7 behind A/D converter 14, thereby the control heating power supply is shut down or solenoid valve spray cooling samples.
3. induction heater inductor 12 is as the load of I.F.T. 11, be connected on the transformer 11 secondary connection plates, inductor 12 coils are a circle, use an inductor coil simultaneously in order to heat, to cool off, special inner-cavity structure has been adopted in inductive coil inside, referring to Fig. 2.Under the normal heating state, inductor is shorter 12 heat time heating times, and the several seconds specimen surface just can be heated to about 1000 ℃ approximately.The cooling of inductor 12 is cooled off indirectly by recirculated cooling water 2 copper pipes.Inductor 12 is warming up to 100 ℃ and is normal.After heating-up temperature reaches, when spraying cooling water is passed through spray aperture 4 cooling samples again, also cooled off inductor 12.Inductor 12 internal diameters can be selected different internal diameter sizes for use according to the sample material of different size.
4. the control system control system mainly contains: the control of heating in medium frequency output power of power supply, heating and temperature control, control cool time, test number (TN) control etc.
4.1 heating in medium frequency output power of power supply control
To same test piece, test number (TN) is wanted revision test hundreds of or thousands of times, and this just requires the heating power supply output power relatively stable, the accuracy and the consistance of parameter in the time of could guaranteeing each the test like this.The heating in medium frequency output power of power supply can preset or preset by industrial computer 7 size of output power by manual power adjustments, the back automatically adjusts after comparing by feedback element and power samples circuit, to reach each metastable output power.
4.2 heating and temperature control
The TX type infrared thermometer that the temperature control of cold and hot torture test adopts two U.S. Lei Tai companies to produce, two infrared thermometer 13 common temperature-measuring ranges of forming can be in 0 ℃～1000 ℃ scopes.By 4～20mA current signal output of temperature measurer 13, give industrial computer 7 through A/D converter 14, realize specimen temperature and heating system data communication.
When the output signal of temperature measurer 13 reached the heating-up temperature of setting, the signal of exporting to industrial computer 7 just can make the rectification work of heating in medium frequency power supply stop after industrial computer 7 is judged relatively, and the output power that makes heating power supply is zero, and no-output.
4.3 chilling temperature, test number (TN) control
After heating power supply stops heating, the spraying electromagnetic valve energising, spraying cooling water sprays to sample, and sample is cooled off.The final chilling temperature of sample will be measured by temperature measurer 13, and after specimen temperature arrived chilling temperature, the spray cooling stopped.Because temperature measurer 13 measuring error are bigger when the spray cooling, this part control will adopt the fuzzy control method of temperature measurer, spray time, cool time etc. to control.
Test number (TN) adopts digicounter, when each spraying electromagnetic valve is switched on, also gives counter with this signal, and counter adds 1, when test number (TN) is suitable with the test number (TN) that presets, will send aural signal, and with prompting operation person, test unit will quit work.
Claims (3)
1. cold and hot fatigue experimental device of induction heating type metal material, comprise inductor, thyristor intermediate frequency electric source, I.F.T., temperature measurer, control device, thyristor intermediate frequency electric source output connects I.F.T., I.F.T. output termination inductor, temperature measurer connects control device to output after being loaded on the sample thermometric in the inductor, control device comprises industrial computer, the industrial computer output signal connects rectifier control circuit and inverter control circuit, rectifier control circuit and inverter control circuit output connect thyristor intermediate frequency electric source, it is characterized in that inductor coil is by flat copper pipe, outer copper line, inner copper line is formed, the flat copper pipe middle opening leads to recirculated cooling water, two flat copper pipes have up and down been clamped between outer copper line and inner copper line, outer copper line, inner copper line and up and down the cavity that surrounds of two flat copper pipes be spraying cooling water pipe, on the inner copper line wall of spraying cooling water pipe, have several spray cooling holes, the external spraying electromagnetic valve of spraying cooling water pipe, spraying electromagnetic valve is controlled by the industrial computer output signal.
2. the cold and hot fatigue experimental device of induction heating type metal material according to claim 1 is characterized in that industrial computer output inductor heating and spraying electromagnetic valve start signal connect counter.
3. the cold and hot fatigue experimental device of induction heating type metal material according to claim 1 is characterized in that temperature measurer is two infrared thermometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042021 CN2828797Y (en) | 2005-05-31 | 2005-05-31 | Induction heating type metal material cold-het fatigue testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200520042021 CN2828797Y (en) | 2005-05-31 | 2005-05-31 | Induction heating type metal material cold-het fatigue testing device |
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| CN2828797Y true CN2828797Y (en) | 2006-10-18 |
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| CN 200520042021 Expired - Fee Related CN2828797Y (en) | 2005-05-31 | 2005-05-31 | Induction heating type metal material cold-het fatigue testing device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445401A (en) * | 2011-10-20 | 2012-05-09 | 新兴铸管股份有限公司 | Method for quickly testing alternating thermal stress resistance of metal |
| CN102495095A (en) * | 2011-11-07 | 2012-06-13 | 兰州理工大学 | Automatic control device of material cold and hot circulation performance and operating method thereof |
| CN102866076A (en) * | 2012-08-14 | 2013-01-09 | 哈尔滨工业大学 | Conductive-type thermal-protection material cold/hot circulating thermal shock test apparatus |
| CN103024957A (en) * | 2012-12-31 | 2013-04-03 | 山东彼岸电力科技有限公司 | Medium-frequency induction heating power source and control method thereof |
| CN103575608A (en) * | 2013-10-31 | 2014-02-12 | 北京科技大学 | Efficient cold-hot fatigue test device and method capable of online observing |
| CN103715912A (en) * | 2013-11-22 | 2014-04-09 | 哈尔滨宏宇整流开关厂 | Intelligent temperature control device of mold pressing platform variable-frequency power source |
| CN103926163A (en) * | 2014-04-10 | 2014-07-16 | 北京工业大学 | System and method for thermal fatigue test by induction heating and air cooling |
| CN105571973A (en) * | 2014-10-15 | 2016-05-11 | 中国科学院金属研究所 | Constant stress loaded thermal fatigue experimental device and method |
| CN106793222A (en) * | 2017-03-06 | 2017-05-31 | 浙江亿洋智能装备科技股份有限公司 | Infrared temperature detecting wireless transmits IGBT full-bridge energy-conservation induction heating equipments |
| CN108195706A (en) * | 2017-12-25 | 2018-06-22 | 北京航空航天大学 | A kind of thermal fatigue test system of ceramic matrix composite material structure part |
-
2005
- 2005-05-31 CN CN 200520042021 patent/CN2828797Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445401A (en) * | 2011-10-20 | 2012-05-09 | 新兴铸管股份有限公司 | Method for quickly testing alternating thermal stress resistance of metal |
| CN102495095A (en) * | 2011-11-07 | 2012-06-13 | 兰州理工大学 | Automatic control device of material cold and hot circulation performance and operating method thereof |
| CN102866076A (en) * | 2012-08-14 | 2013-01-09 | 哈尔滨工业大学 | Conductive-type thermal-protection material cold/hot circulating thermal shock test apparatus |
| CN102866076B (en) * | 2012-08-14 | 2014-06-18 | 哈尔滨工业大学 | Conductive-type thermal-protection material cold/hot circulating thermal shock test apparatus |
| CN103024957A (en) * | 2012-12-31 | 2013-04-03 | 山东彼岸电力科技有限公司 | Medium-frequency induction heating power source and control method thereof |
| CN103575608A (en) * | 2013-10-31 | 2014-02-12 | 北京科技大学 | Efficient cold-hot fatigue test device and method capable of online observing |
| CN103715912A (en) * | 2013-11-22 | 2014-04-09 | 哈尔滨宏宇整流开关厂 | Intelligent temperature control device of mold pressing platform variable-frequency power source |
| CN103926163A (en) * | 2014-04-10 | 2014-07-16 | 北京工业大学 | System and method for thermal fatigue test by induction heating and air cooling |
| CN105571973A (en) * | 2014-10-15 | 2016-05-11 | 中国科学院金属研究所 | Constant stress loaded thermal fatigue experimental device and method |
| CN106793222A (en) * | 2017-03-06 | 2017-05-31 | 浙江亿洋智能装备科技股份有限公司 | Infrared temperature detecting wireless transmits IGBT full-bridge energy-conservation induction heating equipments |
| CN108195706A (en) * | 2017-12-25 | 2018-06-22 | 北京航空航天大学 | A kind of thermal fatigue test system of ceramic matrix composite material structure part |
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| 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: 20061018 Termination date: 20140531 |