CN204008278U - A kind of controllable environment high temperature mechanics experimental machine - Google Patents
A kind of controllable environment high temperature mechanics experimental machine Download PDFInfo
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- CN204008278U CN204008278U CN201420302929.5U CN201420302929U CN204008278U CN 204008278 U CN204008278 U CN 204008278U CN 201420302929 U CN201420302929 U CN 201420302929U CN 204008278 U CN204008278 U CN 204008278U
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Abstract
Name of the present utility model is called a kind of controllable environment high temperature mechanics experimental machine.Belong to structured material mechanical property test and checkout equipment technical field.It is mainly that the existing mechanical test machine of solution can not be for the problem of 1500 ℃ of above mechanical property tests and detection.Its principal character is: heating furnace furnace shell and heat-insulation layer also comprise the part extending in both ends of the surface except importing and exporting, and heating element is stratie, in heating furnace both ends of the surface, is equipped with thermoscreen outward; Employing leaves the vacuum chamber that adopts the bleeding of static seal structure, inflation, vacuum chamber actuating doors etc., and base and servo-drive system, column, upper mount pad, clamping device and heating furnace are installed in vacuum chamber cabin, and gas charging system is connected with inflatable interface on the body of cabin.The utlity model has and can realize sample air, vacuum and controlled atmosphere experimental enviroment, carry out 1500 ℃ ~ 1600 ℃ mechanical property tests and detection, and the feature of 1600 ℃ of above vacuum and protective atmosphere mechanical property test and detection.
Description
Technical field
The utility model belongs to structured material mechanical property test and checkout equipment technical field.Be specifically related to a kind of high ambient temperature mechanical test machine of controlling, particularly the more than 1500 ℃ mechanical test machine of high-temperature structural material mechanical property test and detection.
Background technology
Traditional mechanics testing machine, by sample being applied to stretching, compression, bending, the mechanical property of shearing force testing structured material under above-mentioned load modes, for structured material performance evaluation, is divided into room temperature mechanical test machine and high temperature mechanics experimental machine two classes.Room temperature mechanical test machine is at ambient temperature, by modes such as counterweight, hydraulic system, servo-drive systems, coordinate corresponding mechanics sample clamping device, sample is applied to the external force such as stretching, compression, bending, shearing, register system records sample from starting imposed load to failure damage process, the stressed size of sample, geometric properties be rule over time, for follow-up mechanics property analysis (can be that manual analysis can be also software analysis) provides basic data.High temperature mechanics experimental machine has increased the temperature control equipment in sample space of living on the basis of room temperature mechanical test machine, has increased sample environment temperature sensor and thermograph in register system.Conventional high-temperature mechanical property test equipment is for structural metallic materials designs such as high temperature alloys, and the highest probe temperature is no more than 1350 ℃, and long-time probe temperature is no more than 1250 ℃.Along with the development of material science, newly the high-temperature structural material of development can be at 1500 ℃ and to working long hours under higher environment temperature, the mechanical behavior under high temperature that traditional high temperature mechanics experimental machine cannot this class material of Measurement accuracy.
Summary of the invention
The utility model provides a kind of sample air, vacuum and controlled atmosphere experimental enviroment can realized for above-mentioned deficiency; and carry out 1500 ℃ ~ 1600 ℃ mechanical property tests and detection under experimental enviroment, and the environmental mechanics the controlled testing machine of 1600 ℃ of above vacuum and protective atmosphere mechanical property test and detection.
Technical solution of the present utility model is: a kind of controllable environment high temperature mechanics experimental machine, comprise base and servo-drive system, column, upper mount pad, clamping device and heating furnace, column is fixed between base and servo-drive system and upper mount pad, clamping device and heating furnace are between base and servo-drive system and upper mount pad, heating furnace skin is furnace shell, middle part is heat-insulation layer, near in the furnace chamber of heat-insulation layer, be provided with heating element, it is characterized in that: also comprise vacuum chamber and supporting vacuum unit, gas charging system; Described heating furnace furnace shell and heat-insulation layer also comprise the part extending in both ends of the surface except importing and exporting, heating element is the stratie of 1500 ℃ of above high temperature of ability, in heating furnace both ends of the surface, be equipped with thermoscreen outward, thermoscreen is provided with the through hole coordinating with heating furnace both ends of the surface import or export; The cabin body of described vacuum chamber for adopting structural steel steel plate to make, on the body of cabin, leave and adopt the bleeding of static seal structure, inflation, power supply, sensor and control signal inlet and outlet connectors, on the body of cabin, have the vacuum chamber actuating doors with hermetically-sealed construction, base and servo-drive system, column, upper mount pad, clamping device and heating furnace are installed in vacuum chamber cabin, and vacuum unit is connected with the interface of bleeding on the body of cabin; Gas charging system is comprised of inlet channel, loading line and valve system, gas source interface in vacuum chamber, and in vacuum chamber, inlet channel is connected with inflatable interface on the body of cabin.
Stratie described in the utility model technical solution is Si-Mo rod heating element, and heat-insulation layer is pyroceram fibre layer heat-insulation layer, for 1500 ℃ ~ 1600 ℃ mechanical property tests and detection.
Stratie described in the utility model technical solution is graphite heating component, and heat-insulation layer is carbon felt heat-insulation layer, for 1600 ℃ of above vacuum and protective atmosphere environmental mechanics performance test and detection.
Gas charging system described in the utility model technical solution comprises one or more gas source interfaces.
In the utility model technical solution, testing machine moving component is in vacuum chamber, and with vacuum bulkhead, space interference do not occur, and moving component does not need through vacuum bulkhead; In vacuum chamber, only having in heating furnace is high-temperature region, and the heating furnace external space is normal temperature district; Vacuum chamber stationary seal structure, does not interfere the spatial degrees of freedom of grasping system and force application system.
The utility model is on the basis of conventional high-temperature testing machine for mechanical properties, by improving heating element, furnace binding, can improve temperature in stove, can be incubated and reduce heat loss again, can meet the requirement working long hours more than 1500 ℃, simultaneously, overall vacuum cabin and the gas charging system set up, and by base and servo-drive system, column, upper mount pad, clamping device and heating furnace are loaded in vacuum chamber, meet air ambient, under vacuum environment and controlled atmosphere condition, 1500 ℃ ~ 1600 ℃ mechanicals behavior under high temperature are tested and testing requirement, or meet under vacuum environment and controlled atmosphere condition, 1600 ℃ of above mechanical behavior under high temperature test and testing requirements.
The utlity model has following useful effect:
1, the utility model provides a kind of mechanical behavior under high temperature testing equipment, has realized the irrealizable 1500 ℃ of above mechanical property tests of traditional mechanics testing machine institute and measuring ability.
2, the vacuum chamber system of invention, has solved the contradiction between traditional vacuum sealing and the required degree of freedom of mechanical test machine clamping device, and providing of vacuum test environment has been provided under the prerequisite of warranty test precision.
3, the gas charging system of invention, matches with vacuum system, has realized mechanical behavior under high temperature experimental atmosphere environment and has controlled function.
The utlity model has and can realize sample air, vacuum and controlled atmosphere experimental enviroment; and carry out 1500 ℃ ~ 1600 ℃ mechanical property tests and detection under this experimental enviroment, and the feature of 1600 ℃ of above vacuum and protective atmosphere mechanical property test and detection.The utility model is mainly used in 1500 ℃ of above high-temperature structural material mechanical property tests and detection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic diagram of the utility model vacuum chamber actuating doors open mode.
Fig. 3 is the structural representation of the utility model heating furnace.
In figure: 1, vacuum chamber base; 2, vacuum bulkhead; 3, base and servo-drive system; 4, column; 5, lower clamping device; 6, heating furnace; 7, upper clamping device; 8, upper mount pad; 9, sample; 10 extensometers; 11, detector for displacement measuring; 12, vacuum chamber line interface; 13, the interface of bleeding; 14, exhaust pipe; 15, vacuum unit; 16, control and register system; 17, source of the gas; 18, loading line; 19, vacuum chamber actuating doors; 21, furnace shell; 22, heat-insulation layer; 23, heating furnace mounting limit mechanism; 24, upper thermoscreen; 25, heating element; 26, galvanic couple; 27, power supply exit; 28, heating furnace junction block; 29, extensometer extraction channel; 30 times thermoscreens.
Embodiment
Below in conjunction with accompanying drawing and example, the utility model is described in further detail.
As shown in Figure 1 to Figure 3.A kind of controllable environment high temperature mechanics experimental machine of the utility model comprises base and servo-drive system, column, upper mount pad, clamping device, heating furnace, vacuum chamber and supporting vacuum unit and gas charging system.Wherein, corresponding identical with existing high temperature mechanics experimental machine of base and servo-drive system 3, column 4, upper mount pad 8, clamping device, column 4 is fixed between base and servo-drive system 3 and upper mount pad 8, clamping device comprises clamping device 7, lower clamping device 5, be separately fixed on base and servo-drive system 3, upper mount pad 8, heating furnace 6 is between upper clamping device 7 and lower clamping device 5.In test process, sample 9 clampings are between upper clamping device 7 and lower clamping device 5, extensometer 10 measuring junctions are arranged on sample 9, extensometer 10 signal exits are connected on detector for displacement measuring 11, by detector for displacement measuring 11 by the displacement signal collection of extensometer 10 and be sent to and control and register system 16.
Heating furnace 6 is different from existing high-temperature heater, heating furnace global design annular tubular structure, and heating furnace 6 skins are furnace shells 21, middle part is heat-insulation layer 22, near in the furnace chamber of heat-insulation layer, is provided with stratie 25.Furnace shell 21 outside surfaces be equipped with heating furnace mounting limit mechanism 23 and; Galvanic couple 26 measuring junctions are positioned at the area of space that stove represents sample environment temperature, and signal exit is drawn from heating furnace junction block 28; The power supply exit 27 of heating element is positioned at heating furnace junction block 28 places, and in furnace shell 21 insulation.Breach on heating furnace lower surface and lower thermoscreen forms extensometer extraction channel 29.Heating furnace furnace shell and heat-insulation layer also comprise the part extending in both ends of the surface except importing and exporting, and reduce heat loss.Thermoscreen 24 and lower thermoscreen 30 on heating furnace both ends of the surface are provided with outward, upper thermoscreen 24, lower thermoscreen 30 are provided with the through hole coordinating with heating furnace both ends of the surface import or export, reduce heat radiation to clamping the impact of the mechanism that has objection.Heating element 25 is stratie.Stratie can be Si-Mo rod heating element, and heat-insulation layer can be pyroceram fibre layer heat-insulation layer, for 1500 ℃ ~ 1600 ℃ mechanical property tests and detection.Stratie can also be graphite heating component, and heat-insulation layer can also be carbon felt heat-insulation layer, more than 1600 ℃ mechanical property test and detection.According to specimen size, design heating furnace size.Heating furnace burner hearth is guaranteeing that sample 9, extensometer 10 and clamping device are through burner hearth, and guarantees that under the prerequisite of clamping device horizontal direction degree of freedom, furnace diameter is as much as possible little.Furnace height should guarantee that sample holder district stretches out outside stove, and has enough clamping lengths.Every testing machine is furnished with two heating furnaces of above-mentioned different straties, and these two heating furnace form factor, various interface should be consistent, and meet interchangeability requirement.
The cabin body of the vacuum chamber increasing for adopting structural steel steel plate to make, comprises vacuum chamber base 1 and vacuum bulkhead 2, and global design becomes solid wall cylindroid or cylindrical.On vacuum bulkhead 2 sidewalls, leave the vacuum chamber interface 13 of bleeding, by exhaust pipe 14, be connected with vacuum unit 15; Gas charging system intake interface is left in bottom; vacuum chamber line interface 12 and vacuum chamber circuit switching seat are left in middle part, and all kinds of power lines, signal wire converting interface are concentrated at this, for avoiding the interference of forceful electric power to light current; adapter can be established a plurality of, and signal line is carried out to shielding protection.Base and servo-drive system 3, column 4, upper mount pad 8, clamping device and heating furnace 6 are whole to be loaded in vacuum chamber cabin, do not affecting under the prerequisite of vacuum chamber structural strength and device operability, vacuum chamber size may be little, the structure of two halves make-up before and after vacuum chamber also can be designed to, to facilitate equipment to install and maintenance.The convenient vacuum chamber actuating doors 19 of opening is left in vacuum chamber dead ahead, is not affecting under device structure intensity or the prerequisite by property and operation bamboo, and actuating doors size is large as far as possible, and to facilitate sample, the handling of heating furnace and equipment repair and maintenance are supported.The all butt-welded side seams of vacuum chamber all adopt rubber seal or sealing gasket to seal.Control and register system 16 are corresponding identical with existing high temperature mechanics experimental machine.Feature is: 1, testing machine moving component, in vacuum chamber, and with vacuum bulkhead, space interference does not occur, and moving component does not need through vacuum bulkhead; 2, in vacuum chamber, only having in heating furnace is high-temperature region, and the heating furnace external space is normal temperature district; 3, vacuum chamber stationary seal structure, does not interfere the spatial degrees of freedom of grasping system and force application system, and total interface all adopts static seal structure.
The vacuum chamber scheme that the utility model provides and the difference of traditional experiment machine are: traditional high temperature mechanics experimental machine cannot provide vacuum environment, when this is because carries out vacuum system upgrading, according to the mentality of designing of traditional internal heat type vacuum drying oven, be to vacuumizing in heating furnace.Sample and clamping device interlude are in heating zone, and two is outside heating furnace, and sample clamping mechanism can be from upper and lower both direction through heating furnace furnace wall.Adopt the methods such as traditional movable sealing structure or corrugated tube connection can solve the sealing problem between heating furnace and structure sample clamping mechanism, yet, mechanical test requires upper and lower two ends clamping device application of force direction to overlap with sample center line, clamping device must keep certain degree of freedom in the horizontal direction, could when imposed load, by the axle of marching toward, automatically regulate centering, warranty test and measuring accuracy.When conventional thought solves heating furnace and grasping system sealing, the degree of freedom of upper and lower clamping device horizontal direction is dared in restriction, hindered the function of automatic capturing in upper lower chuck application of force process, must affect mechanics accuracy of detection, even may cause the improper destruction of sample, test figure is invalid.The utility model has been broken through conventional thought, adopt a vacuum chamber that contains whole heating furnace, sample and grasping system, vacuum unit vacuumizes vacuum chamber, providing of area of the sample vacuum environment is provided, thereby avoids the expensive and precision that between heating furnace and sample clamping mechanism, movable sealing structure brings to reduce.
Gas charging system is comprised of inlet channel, loading line 18 and valve system, gas source interface in vacuum chamber, and gas source interface can be connected with one or more sources of the gas 17.In vacuum chamber, inlet channel is by a diameter 10mm, and the stainless-steel tube of wall thickness 1mm is made, and is close to along 360 ° of distributions of vacuum chamber bottom circumference, a termination vacuum chamber gas charging system cabin inner joint.Pipe system adopts diameter 10mm, the stainless-steel tube of wall thickness 1mm is made, one termination vacuum chamber gas charging system is interface out of my cabin, two source of the gas ports with flexible pipe of another termination, at the source of the gas access point near vacuum chamber one side, a relief port is set, bleed passage and bleed passage are other arranges valve near on the main line of vacuum chamber one side, near on two source of the gas passages of bleed passage, valve is being set respectively, conveniently evacuation of air when changing gas cylinder.Feature is: 1, in vacuum chamber inlet channel by one can many pipeline being interconnected and above uniform aperture form, aperture can be designed on space symmetrical, reduces even required time of cabin internal ambience; 2, pipeline and valve have the function that connects inlet channel and source of the gas, and can open and close by the combination of valve and realize the emptying and displacement of pipe interior gas; 3, source of the gas part can be used one or more sources of the gas simultaneously, is filled with between gas, violent chemical reaction can not occurs between gas and equipment and materials, sample material, to guarantee to need the person and device security under test condition.
The operation steps of the utility model controlled atmosphere high temperature mechanics experimental machine:
1, according to specimen size feature and test temperature, select heating furnace;
2, open air valve, open vacuum chamber actuating doors, close air release, heating furnace is installed to upper clamping device and hangs on upper clamping device top;
3, clamping sample;
4, heating furnace is in place;
5, close vacuum chamber actuating doors;
6, be evacuated down to required vacuum tightness, as air atmosphere does not need to vacuumize;
7, pour desired gas medium, if do not adopted atmosphere to control this, do not carry out;
8, be slowly warmed up to test temperature;
9, extended device signal makes zero;
10, load, record load in loading procedure, sample elongation rule over time, until sample fracture or arrival regulation stop the condition of test;
11, unload, stop heating furnace, be naturally cooled to room temperature;
12, open air valve, after arrestment inner and outer air pressure, close air release;
13, open vacuum chamber actuating doors, unclamp electric furnace stationary installation, by the contrary step of dress sample, take off sample;
14, cleaning equipment, arranges appropriate by apolegamy parts such as clamping device, heating furnaces by fixation requirement;
15, shutoff operation hatch door, is evacuated to 10
-2below pa, close vacuum unit, make equipment under vacuum negative pressure condition, closing device power supply, test job finishes.
According to above-mentioned steps operation, can realize under air, vacuum or protective atmosphere environment 1500 ℃ of above mechanical property tests of structured material and detection.The utility model can guarantee the person and device security.
Claims (4)
1. a controllable environment high temperature mechanics experimental machine, comprise base and servo-drive system (3), column (4), upper mount pad (8), clamping device and heating furnace (6), column (4) is fixed on and is positioned between base and servo-drive system (3) and upper mount pad (8), clamping device and heating furnace (6) are positioned between base and servo-drive system (3) and upper mount pad (8), heating furnace (6) skin is furnace shell (21), middle part is heat-insulation layer (22), near in the furnace chamber of heat-insulation layer, be provided with heating element (25), it is characterized in that: also comprise vacuum chamber and supporting vacuum unit (15), gas charging system, described heating furnace furnace shell and heat-insulation layer also comprise the part extending in both ends of the surface except importing and exporting, heating element (25) is the stratie of 1500 ℃ of above high temperature of ability, in heating furnace both ends of the surface, be equipped with thermoscreen outward, thermoscreen is provided with the through hole coordinating with heating furnace both ends of the surface import or export, the cabin body of described vacuum chamber for adopting structural steel steel plate to make, on the body of cabin, leave and adopt the bleeding of static seal structure, inflation, power supply, sensor and control signal inlet and outlet connectors, on the body of cabin, have the vacuum chamber actuating doors (19) with hermetically-sealed construction, base and servo-drive system (3), column (4), upper mount pad (8), clamping device and heating furnace (6) are installed in vacuum chamber cabin, and vacuum unit (15) is connected with the interface (13) of bleeding on the body of cabin, gas charging system is comprised of inlet channel, loading line (18) and valve system, gas source interface in vacuum chamber, and in vacuum chamber, inlet channel is connected with inflatable interface (13).
2. a kind of controllable environment high temperature mechanics experimental machine according to claim 1, is characterized in that: described stratie is Si-Mo rod heating element, and heat-insulation layer is pyroceram fibre layer heat-insulation layer.
3. a kind of controllable environment high temperature mechanics experimental machine according to claim 1, is characterized in that: described stratie is graphite heating component, and heat-insulation layer is carbon felt heat-insulation layer.
4. according to a kind of controllable environment high temperature mechanics experimental machine described in claim 1,2 or 3, it is characterized in that: described gas charging system comprises one or more gas source interfaces.
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| CN201420302929.5U CN204008278U (en) | 2014-06-09 | 2014-06-09 | A kind of controllable environment high temperature mechanics experimental machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458574A (en) * | 2014-12-09 | 2015-03-25 | 北京科技大学 | Device and method for testing shearing strength in environment with ultrahigh temperature or great temperature difference |
| CN104569046A (en) * | 2015-01-15 | 2015-04-29 | 中国建筑材料科学研究总院 | Ultra-high temperature heat-insulating property testing device and method |
| CN104596863A (en) * | 2015-01-05 | 2015-05-06 | 中国工程物理研究院总体工程研究所 | Metallic material tensile experiment system of multifunctional integration structure |
| CN104777030A (en) * | 2014-06-09 | 2015-07-15 | 襄阳航泰动力机器厂 | Environment-controllable high-temperature mechanical testing machine |
-
2014
- 2014-06-09 CN CN201420302929.5U patent/CN204008278U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777030A (en) * | 2014-06-09 | 2015-07-15 | 襄阳航泰动力机器厂 | Environment-controllable high-temperature mechanical testing machine |
| CN104458574A (en) * | 2014-12-09 | 2015-03-25 | 北京科技大学 | Device and method for testing shearing strength in environment with ultrahigh temperature or great temperature difference |
| CN104458574B (en) * | 2014-12-09 | 2017-01-04 | 北京科技大学 | Device and method for testing shear strength in ultrahigh-temperature or large-temperature-difference environment |
| CN104596863A (en) * | 2015-01-05 | 2015-05-06 | 中国工程物理研究院总体工程研究所 | Metallic material tensile experiment system of multifunctional integration structure |
| CN104596863B (en) * | 2015-01-05 | 2017-10-31 | 中国工程物理研究院总体工程研究所 | The tensile test of metallic materials system of multifunctional all structure |
| CN104569046A (en) * | 2015-01-15 | 2015-04-29 | 中国建筑材料科学研究总院 | Ultra-high temperature heat-insulating property testing device and method |
| CN104569046B (en) * | 2015-01-15 | 2017-07-14 | 中国建筑材料科学研究总院 | Superhigh temperature Heat-Insulation Test device and test method |
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Granted publication date: 20141210 Termination date: 20190609 |
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