CN103033536A - Titanium fire drop method tester and testing method thereof - Google Patents
Titanium fire drop method tester and testing method thereof Download PDFInfo
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Abstract
The invention discloses a titanium fire drop method tester and a testing method thereof. The tester comprises a combustion bin, a control system, a specimen heating power supply, a gas heating furnace and a plasma heat source system, wherein the gas heating furnace is arranged at the lower part of the combustion bin; the specimen heating power supply is electrically connected with the combustion bin and is used for heating a specimen; and the control system is used for controlling the combustion bin, the gas heating furnace and gas flow. The tester also comprises a specimen clamp, a gas spray pipe and an automatic wire feeder, wherein the specimen clamp is arranged in the combustion bin; the gas spray pipe is arranged in the combustion bin; and the automatic wire feeder is arranged at the top part of the combustion bin. Under the control of the control system, the specimen heating electric power is started to heat the specimen; the gas heating furnace is started to heat gas, and after specimen temperature and gas temperature reach a set value, the plasma heat source system and the automatic wire feeder are started to melt a titanium alloy 1 (TA1) wire; molten droplets drop to the surface of the specimen; and the flame resistance of a flame-retardant coating is judged by the ignited or non-ignited specimen.
Description
Technical field
The present invention relates to Burn-Resistant Titanium Alloy and flame retardant coating technology, particularly relate to a kind of for test unit and the method for testing thereof of aeromotor with Burn-Resistant Titanium Alloy, the test of flame retardant coating fire resistance.
Background technology
Titanium or titanium alloy is because specific strength and specific modulus are high, density is low, survivability is strong, obtaining a wide range of applications aspect Aeronautics and Astronautics, shipping industry, the war industry as the high-strength light material, particularly aspect Aero-Space, have an high regard for when effectively carrying in order to improve, high performance light metal material titanium alloy is widely used in making aerospace parts.Yet the titanium fault of catching fire occurs when the aeromotor rotary part in titanium alloy easily, and the scope that titanium catches fire can develop into burning on a large scale from slight blade tip burning, posterior marginal zone burning, sometimes even cause 360 ° of casings to burn.
Have an high regard for when effectively carrying in order to improve aeromotor, modern advanced aero engine generally adopts titanium alloy to make the critical components such as compressor casing, rotor disk, spinner blade, stator blade and fan blade, and about 1/3 of motor structure mass is titanium alloy.
The easy generation titanium fault of catching fire when conventional titanium alloy is used in aeromotor, Burn-Resistant Titanium Alloy and flame retardant coating technology have become the gordian technique of guaranteeing the aero-engine compressor part reliability.
Development Burn-Resistant Titanium Alloy and flame retardant coating are the main method that solves titanium fire fault, are the difficult problem of pendulum in face of the scientific research personnel but how to check the Burn-Resistant Titanium Alloy of development and the fire-retardant validity of flame retardant coating.At present, the country such as the U.S., Russia adopt respectively different principle to develop to produce fire by friction, the dissimilar titanium fire test device such as laser ignition.The test model of rubbing manipulation is by sample being carried out the low-temperature heat working temperature of the engine when using (), utilizes the high rotating speed friction titanium alloy that ignites.The laser spots pyrogenic process is to utilize the laser-induced combustion titanium alloy to test the Burn-Resistant Titanium Alloy characteristics such as burning rate at high temperature itself.
More than two kinds of test methods all can not simulate in engine titanium fire fault and be splashed to the secondary combustion process that the compressor casing inwall causes because of molten melt drop, consider that present titanium fire prevents that the technology experiment demand is more urgent, therefore, one of development can the simulated engine titanium titanium fire sessile drop method test unit of fire secondary combustion process can effectively solve the titanium fire and prevent a technical validity verification experimental verification difficult problem.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of titanium fire sessile drop method test unit and method of testing thereof, is used for realizing Burn-Resistant Titanium Alloy and the fire-retardant validation verification of flame retardant coating.
For achieving the above object, the present invention proposes a kind of titanium fire sessile drop method test unit, comprise combustion bin, control system, sample heating power supply, gas heating stove, plasma heat source system, described gas heating stove is arranged at the combustion bin bottom, described sample heating power supply is electrically connected with combustion bin, is used for heating sample; Described control system is used for control combustion storehouse, gas heating stove and gas flow; Wherein, also comprise:
Be arranged at the specimen holder of combustion bin center;
Be arranged at the gas spray pipe in the combustion bin;
Be arranged at the automatic wire feeding mechanism at combustion bin top;
Wherein, according to the control of described control system, after on the described specimen holder sample being installed, start described sample heating power supply heating sample, the adjustments of gas valve is to setting flow value, start described gas heating stove heated air, after described sample and gas temperature reach setting value, start described plasma heat source system, start described automatic wire feeding mechanism, with the fusing of TA1 silk material, molten melt drop is dropped in described specimen surface, and described sample ignites or do not ignite.
Wherein, also comprise being installed in the outer high-speed camera of combustion bin, be used for taking titanium fire sessile drop method process of the test.
Wherein, described plasma heat source system comprises plasma power supply, plasma switch board, plasma gun, ion source of the gas, refrigeration unit, described plasma gun places described combustion bin top, described refrigeration unit and described plasma switch board are connected with described plasma gun respectively, and described plasma power supply is connected with described plasma switch board.
Wherein, comprise that also one can be installed on the described combustion bin in the X-Y travel mechanism of X-Y direction twin shaft operation, described plasma gun is installed on the described X-Y travel mechanism.
Wherein, described automatic wire feeding mechanism is comprised of stepper motor and controller.
Wherein, described gas comprises pressurized air and oxygen.
Wherein, also comprise a K type thermopair, be welded on described gas spray pipe and the described sample, be used for sample thermometric and gas vent thermometric.
And for achieving the above object, the present invention also proposes a kind of Burn-Resistant Titanium Alloy or flame retardant coating fire resistance method of testing, utilizes above-mentioned titanium fire sessile drop method test unit to carry out, and the method comprises:
Step 1: selected a kind of titanium alloy is as Burn-Resistant Titanium Alloy or flame retardant coating fire resistance checking control sample;
Step 2: described control sample is installed on the described specimen holder, opens sample heating power supply heating sample, adjusting sample heating power supply electric current, heating sample is to testing set temperature value;
Step 3: open pressurized air and oxygen, regulate pressurized air and oxygen pressure to setting value, regulate pressurized air and oxygen flow to testing setting value;
Step 4: open gas heating stove, the mixed gas of pressurized air and oxygen is heated to the test set temperature value;
Step 5: open the plasma heat source system;
Step 6: start automatic wire feeding mechanism, the TA1 silk is sent in the plasma arc, plasma arc fusing TA1 silk, molten melt drop drops to described specimen surface, and described sample ignites or does not ignite;
Step 7: under the test setup parameter, when described sample is not melted drop and ignites, repeating step six, long run test at least five times, if in continuous five processs of the test, described sample burns, and then stops this and takes turns test, reduces test parameters and proceeds the lower whorl test, take turns in the process of the test when one, when continuous five described samples all do not burn, assert that then this test parameters is the critical combustion parameter of described control sample, do not burn being lower than under this Parameter Conditions described control sample.
Wherein, preferably, also comprise step 8: described Burn-Resistant Titanium Alloy sample or flame retardant coating sample are installed on the specimen holder, setting test parameters is the critical combustion parameter of described control sample, repeating step two is to step 6, when described Burn-Resistant Titanium Alloy sample or flame retardant coating sample do not burn under the critical combustion parameter condition of described control sample, then described Burn-Resistant Titanium Alloy or flame retardant coating have certain fire resistance.
And preferably, in described step 7, the step 8, further comprise: the outer high-speed camera of the view window by being installed in described combustion bin is taken the ignite step of sample process of drop in the process of the test.
The titanium fire sessile drop method test unit of new generation of the present invention's development, can be used for the aero-engine compressor titanium alloy member, in order to the critical combustion parameter of testing different titanium alloys, the fire-retardant validity of verifying different Burn-Resistant Titanium Alloys, flame retardant coating, be gordian technique and the important tests method of carrying out aeromotor Burn-Resistant Titanium Alloy, flame retardant coating research, help more deep research Burn-Resistant Titanium Alloy, the fire retardant mechanism of flame retardant coating.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is titanium fire sessile drop method testing platform system composition diagram;
Fig. 2 A and Fig. 2 B are titanium fire sessile drop method test platform anchor clamps synoptic diagram;
Fig. 3 adopts the critical combustion parameter of titanium fire sessile drop method test platform test gained typical case's titanium alloy;
Wherein, accompanying drawing 1 mark:
1-refrigeration unit 2-plasma power supply
3-plasma switch board 4-PLC controller
5-plasma gun 6-XY-travel mechanism
7-automatic wire feeding mechanism 8-TA1 titanium silk
9-combustion bin 10-gas spray pipe
11-gas heating stove 12-view window
13-sample 14-control system
15-sample heating power supply 16-pressurized air
17-oxygen
Wherein, accompanying drawing 2 marks:
1-insulator foot 2-underframe
3-compressing tablet 4-pressure head
5-upperpush rod 6-pressure head support
Embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is made further more detailed description.
Fig. 1 is titanium fire sessile drop method testing platform system composition diagram, as shown in Figure 1, PLC controller 4 is installed on the plasma switch board 3, plasma gun 5 is installed on the X-Y travel mechanism 6, TA1 titanium silk 8 is installed on the automatic wire feeding mechanism 7, and X-Y travel mechanism 6 is installed on the combustion bin 9 with automatic wire feeding mechanism 7.
Combustion bin 9 front end end covers have view window 12, the outside can be installed high-speed camera and be taken whole process of the test, combustion bin 9 inside are equipped with gas spray pipe 10 and sample 13, adopt reserve energy spot welding machine to be welded with K type thermopair on gas spray pipe 10 and the sample 13, gather gas outlet temperature and specimen temperature, and form close-loop feedback, control gas outlet temperature and specimen temperature with gas heating stove and sample heating power supply respectively.
Particularly, the present invention proposes a kind of titanium fire sessile drop method test unit, comprise combustion bin 9, control system 14 (being produced by the Beijing JinLun KunTian special Machine Co., Ltd), sample heating power supply 15, gas heating stove 11, plasma heat source system, described gas heating stove 11 is arranged at combustion bin 9 bottoms, described sample heating power supply 15 is electrically connected with combustion bin 9, is used for heating sample 13; Described control system 14 is used for control combustion storehouse 9, gas heating stove 11 and gas flow; And comprise:
Be arranged at the specimen holder in the combustion bin 9;
Be arranged at the gas spray pipe in the combustion bin 9;
Be arranged at the automatic wire feeding mechanism 7 at combustion bin 9 tops; Control according to described control system 14, after on the described specimen holder sample being installed, start described sample heating power supply 15 heating samples 13, the adjustments of gas valve is to setting flow value, start described gas heating stove 11 heated air, after described sample 13 and gas temperature reach setting value, start described plasma heat source system, start described automatic wire feeding mechanism 7, TA1 silk material is melted, molten melt drop is dropped in described specimen surface, judges the fire resistance of flame retardant coating with the described sample that ignites or do not ignite.
Wherein, the better high-speed camera that is installed in outside the combustion bin 9 that also comprises of device of the present invention is used for taking titanium fire sessile drop method process of the test.
And, described plasma heat source system comprises plasma power supply 2, plasma switch board 3, plasma gun 5, ion source of the gas, refrigeration unit 1, described plasma gun 5 places described combustion bin 9 tops, described refrigeration unit 1 and described plasma switch board 3 are connected with described plasma gun 5 respectively, and described plasma power supply 2 is connected with described plasma switch board 3.
And device of the present invention is better to comprise that also one can be installed on the described combustion bin 9 in the X-Y travel mechanism 6 of X-Y direction twin shaft operation, and described plasma gun 5 is installed on the described X-Y travel mechanism 6.
And described automatic wire feeding mechanism 7 is comprised of stepper motor and controller.
And described gas comprises pressurized air 16 and oxygen 17.
And the better K type thermopair that also comprises of device of the present invention is welded on described gas spray pipe 10 and the described sample 13, is used for sample thermometric and gas vent thermometric.
In addition, the present invention proposes a kind of Burn-Resistant Titanium Alloy or flame retardant coating fire resistance method of testing, utilize above-mentioned titanium fire sessile drop method test unit to carry out, comprise the steps:
Step 1: selected a kind of titanium alloy is verified control sample as Burn-Resistant Titanium Alloy or flame retardant coating fire resistance:
Step 2: described control sample is installed on the described specimen holder, opens sample heating power supply 15 heating samples, adjusting sample heating power supply 15 electric currents, heating sample is to testing set temperature value;
Step 3: open pressurized air and oxygen, regulate pressurized air and oxygen pressure to setting value, regulate pressurized air and oxygen flow to testing setting value;
Step 4: open gas heating stove 11, the mixed gas of pressurized air and oxygen is heated to the test set temperature value;
Step 5: open the plasma heat source system;
Step 6: start automatic wire feeding mechanism 7, the TA1 silk is sent in the plasma arc, plasma arc fusing TA1 silk, molten melt drop drops to described specimen surface, and described sample ignites or does not ignite;
Step 7: under the test setup parameter, when described sample is not melted drop and ignites, repeating step six, long run test five times, if in continuous five processs of the test, described sample burns, and then stops this and takes turns test, reduces test parameters and proceeds the lower whorl test, take turns in the process of the test when one, when continuous five described samples all do not burn, assert that then this test parameters is the critical combustion parameter of described control sample, do not burn being lower than under this Parameter Conditions described control sample.
Wherein, the better step 8 that also comprises: described Burn-Resistant Titanium Alloy sample or flame retardant coating sample are installed on the specimen holder, setting test parameters is the critical combustion parameter of described control sample, repeating step two is to step 6, when described Burn-Resistant Titanium Alloy sample or flame retardant coating sample do not burn under the critical combustion parameter condition of described control sample, then described Burn-Resistant Titanium Alloy or flame retardant coating have certain fire resistance.
And, in described step 7, the step 8, further comprise:
The outer high-speed camera of view window by being installed in described combustion bin 9 is taken the ignite step of sample process of drop in the process of the test.
Above-mentioned titanium fire sessile drop method test platform important technological parameters is as follows:
1) sample type of heating: resistance heated
2) titanium silk fusing mode: plasma arc fusing
3) sample heating-up temperature: normal temperature-850 ℃
4) gas-heated temperature: normal temperature-550 ℃
5) compressed air require: 2.5-25L/min
6) oxygen flow: 5-45L/min
7) gaseous tension scope: 0-1.0MPa
8) specimen size: 125 * 27 * 2mm
Fig. 2 A and Fig. 2 B are titanium fire sessile drop method test platform anchor clamps synoptic diagram, as shown, comprise insulator foot 1, underframe 2, compressing tablet 3, pressure head 4, upperpush rod 5 and pressure head support 6.
Followingly by application example titanium fire sessile drop method test platform process of the test is described.
Application example 1: the critical combustion parameter test of titanium alloy
Utilize reserve energy spot welding machine with the electric welding of K type thermopair at 125 * 27 * 2mm titanium alloy sample back side, the titanium alloy sample is installed on the specimen holder, open sample heating power supply 15 heating samples, open gas heating stove 11 heated air, after sample and gas outlet temperature reach the experiment setting value, open plasma apparatus, start automatic wire feeding mechanism 7, the TA1 silk is sent in the plasma arc, plasma arc fusing TA1 silk, molten melt drop drops to described specimen surface, when described sample is not melted drop and ignites, repeat molten melt drop drippage ignition test, long run test five times, if in continuous five processs of the test, sample burns, then stop this and take turns test, reduce test parameters and proceed the lower whorl test, take turns in the test when one, continuous five samples all do not burn, assert that then this test parameters is the critical combustion parameter of described sample, described sample does not burn under this Parameter Conditions being lower than, and Figure 3 shows that to adopt the critical combustion parameter of titanium fire sessile drop method test platform test gained typical case's titanium alloy.
Application example 2: Burn-Resistant Titanium Alloy, the fire-retardant validation verification of flame retardant coating
Process of the test is at first tested and the compare critical combustion parameter of sample or flame retardant coating matrix sample of Burn-Resistant Titanium Alloy, and process of the test is identical with application example 1.Under the critical combustion parameter of the Burn-Resistant Titanium Alloy control sample of testing gained or flame retardant coating matrix sample, the fire-retardant validity of Burn-Resistant Titanium Alloy, flame retardant coating is verified, process of the test and application example 1 are basic identical, difference is that test parameters is the critical combustion parameter of Burn-Resistant Titanium Alloy control sample or flame retardant coating matrix sample, if Burn-Resistant Titanium Alloy, flame retardant coating do not burn then prove that Burn-Resistant Titanium Alloy, the flame retardant coating researched and developed have certain fire resistance under this Parameter Conditions.
Application example 3: titanium alloy burn out rate test
Under given test condition, utilize reserve energy spot welding machine with the electric welding of K type thermopair at 125 * 27 * 2mm titanium alloy sample back side, the titanium alloy sample is installed on the specimen holder, open sample heating power supply 15 heating samples, open gas heating stove 11 heated air, after sample and gas outlet temperature reach the experiment setting value, open plasma apparatus, start automatic wire feeding mechanism 7, the TA1 silk is sent in the plasma arc, and plasma arc fusing TA1 silk, molten melt drop drop to the described specimen surface sample that ignites, then close gas switch, the record sample is under design temperature, burning time in the atmospheric environment.After the sample burn-out, disconnect sample heating power supply 15, make sample Slow cooling in atmospheric environment, take off sample, remove the specimen surface products of combustion, weight difference before and after the weighing sample, utilize formula (1) to calculate the titanium alloy burn out rate:
Useful technique effect of the present invention is:
The titanium fire sessile drop method test unit of new generation of the present invention's development, can be used for the aero-engine compressor titanium alloy member, in order to the critical combustion parameter of testing different titanium alloys, the fire-retardant validity of verifying different Burn-Resistant Titanium Alloys, flame retardant coating, be gordian technique and the important tests method of carrying out aeromotor Burn-Resistant Titanium Alloy, flame retardant coating research, help more deep research Burn-Resistant Titanium Alloy, the fire retardant mechanism of flame retardant coating.
The present invention not only can be used for existing Burn-Resistant Titanium Alloy, the fire-retardant validation verification of flame retardant coating, also can be used for the research and development of new Burn-Resistant Titanium Alloy, flame retardant coating system, for new Burn-Resistant Titanium Alloy, flame retardant coating provide the detection foundation; The present invention can be widely used in being engaged in the large-scale leading enterprise, scientific research institutions, testing laboratory of university of aeromotor, titanium alloy, coatings art research and development etc.
Certainly; the present invention also can have other various embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of claim of the present invention.
Claims (10)
1. titanium fire sessile drop method test unit, comprise combustion bin, control system, sample heating power supply, gas heating stove, plasma heat source system, described gas heating stove is arranged at the combustion bin bottom, and described sample heating power supply is electrically connected with combustion bin, is used for heating sample; Described control system is used for control combustion storehouse, gas heating stove and gas flow;
It is characterized in that, also comprise:
Be arranged at the specimen holder in the combustion bin;
Be arranged at the gas spray pipe in the combustion bin;
Be arranged at the automatic wire feeding mechanism at combustion bin top; Control according to described control system, after on the described specimen holder sample being installed, start described sample heating power supply heating sample, the adjustments of gas valve starts described gas heating stove heated air to setting flow value, after described sample and gas temperature reach setting value, start described plasma heat source system, start described automatic wire feeding mechanism, TA1 silk material is melted, molten melt drop is dropped in described specimen surface, judges the fire resistance of flame retardant coating with the described sample that ignites or do not ignite.
2. titanium fire sessile drop method test unit according to claim 1 is characterized in that, also comprises being installed in the outer high-speed camera of combustion bin, is used for taking titanium fire sessile drop method process of the test.
3. described titanium fire sessile drop method test unit according to claim 1 and 2, it is characterized in that, described plasma heat source system comprises plasma power supply, plasma switch board, plasma gun, ion source of the gas, refrigeration unit, described plasma gun places described combustion bin top, described refrigeration unit and described plasma switch board are connected with described plasma gun respectively, and described plasma power supply is connected with described plasma switch board.
4. described titanium fire sessile drop method test unit according to claim 3 is characterized in that comprise that also one can be installed on the described combustion bin in the X-Y travel mechanism of X-Y direction twin shaft operation, described plasma gun is installed on the described X-Y travel mechanism.
5. according to claim 1 and 2 or 3 described titaniums fire sessile drop method test units, it is characterized in that described automatic wire feeding mechanism is comprised of stepper motor and controller.
6. according to claim 1 and 2 or 3 described titaniums fire sessile drop method test units, it is characterized in that described gas comprises pressurized air and oxygen.
7. according to claim 1 and 2 or 3 described titaniums fire sessile drop method test units, it is characterized in that, also comprise a K type thermopair, be welded on described gas spray pipe and the described sample, be used for sample thermometric and gas vent thermometric.
8. a Burn-Resistant Titanium Alloy or flame retardant coating fire resistance method of testing utilize titanium fire sessile drop method test unit claimed in claim 1 to carry out, and it is characterized in that, comprising:
Step 1: selected a kind of titanium alloy is as Burn-Resistant Titanium Alloy or flame retardant coating fire resistance checking control sample;
Step 2: described control sample is installed on the described specimen holder, opens sample heating power supply heating sample, adjusting sample heating power supply electric current, heating sample is to testing set temperature value;
Step 3: open pressurized air and oxygen, regulate pressurized air and oxygen pressure to setting value, regulate pressurized air and oxygen flow to testing setting value;
Step 4: open gas heating stove, the mixed gas of pressurized air and oxygen is heated to the test set temperature value;
Step 5: open the plasma heat source system;
Step 6: start automatic wire feeding mechanism, the TA1 silk is sent in the plasma arc, plasma arc fusing TA1 silk, molten melt drop drops to described specimen surface, and described sample ignites or does not ignite;
Step 7: under the test setup parameter, when described sample is not melted drop and ignites, repeating step six, long run test five times, if in continuous five processs of the test, described sample burns, and then stops this and takes turns test, reduces test parameters and proceeds the lower whorl test, take turns in the process of the test when one, when continuous five described samples all do not burn, assert that then this test parameters is the critical combustion parameter of described control sample, do not burn being lower than under this Parameter Conditions described control sample.
9. Burn-Resistant Titanium Alloy according to claim 8 or flame retardant coating fire resistance method of testing, it is characterized in that, also comprise step 8: described Burn-Resistant Titanium Alloy sample or flame retardant coating sample are installed on the specimen holder, setting test parameters is the critical combustion parameter of described control sample, repeating step two is to step 6, when described Burn-Resistant Titanium Alloy sample or flame retardant coating sample do not burn under the critical combustion parameter condition of described control sample, then described Burn-Resistant Titanium Alloy or flame retardant coating have certain fire resistance.
10. a kind of Burn-Resistant Titanium Alloy according to claim 8 or flame retardant coating fire resistance verification method is characterized in that, in described step 7, the step 8, further comprise:
The outer high-speed camera of view window by being installed in described combustion bin is taken the ignite step of sample process of drop in the process of the test.
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| CN107014947A (en) * | 2017-03-10 | 2017-08-04 | 同济大学 | A kind of winged drip list droplet burning system |
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| CN107045038A (en) * | 2017-03-10 | 2017-08-15 | 同济大学 | A kind of single droplet burning system |
| CN107991167A (en) * | 2017-11-23 | 2018-05-04 | 中国航发北京航空材料研究院 | A kind of fire resistance test method of titanium fire preventing flame retardant coating |
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| CN110161175A (en) * | 2019-04-15 | 2019-08-23 | 中国航发北京航空材料研究院 | A kind of titanium burn experimental rig and its test method |
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