CN103344487A - Device for low-temperature stretching test of metal material - Google Patents
Device for low-temperature stretching test of metal material Download PDFInfo
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- CN103344487A CN103344487A CN2013102885791A CN201310288579A CN103344487A CN 103344487 A CN103344487 A CN 103344487A CN 2013102885791 A CN2013102885791 A CN 2013102885791A CN 201310288579 A CN201310288579 A CN 201310288579A CN 103344487 A CN103344487 A CN 103344487A
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Abstract
The invention discloses a device for a low-temperature stretching test of a metal material. The device comprises a box body device for containing samples, a liquid nitrogen device system for cooling and a temperature control system for controlling the test temperature, wherein the box body device comprises an inner layer, a middle protection layer, an outer layer, a base and a box cover; the liquid nitrogen device system comprises a liquid nitrogen tank, a guide pipe, a guide pipe interface, an internal liquid nitrogen pipe, a gasification net and a liquid discharging valve; the temperature control system consists of a temperature sensor and a temperature control adjustment system. The device is simple and convenient to operate, reasonable in design, uniform in temperature and accurate in test results, can be used for accurately controlling the test temperature to range from 0 DEG C to minus 196 DEG C, omitting the trouble of modifying an existing stretching test machine and saving the cost, and is safe and efficient.
Description
Technical field
The present invention relates to a kind of test unit, specifically a kind of device for the test of metal material cryogenic tensile.
Background technology
Develop rapidly along with modern every profession and trade, increasing steel need use in low temperature environment, as low-temperature pressure container, bridge, building materials low temperature screw-thread steel etc., therefore the accurate measurement for every mechanical property of these materials also just seems most important, especially tensile property indexs such as the yield strength of sample, tensile strength, extensibility and reduction of area.And the mechanical property of material under low temperature environment measured especially tension test, because the restriction of equipment and correlated condition never has an accurate easy measuring method.
The temperature of liquid nitrogen is subzero 196 degree, can in liquid, directly measure for the sample of the performances of measuring subzero 196 degree, but when the performance temperature scope of sample to be tested 0 ℃～when (196 ℃), very difficult temperature is accurately controlled.
Summary of the invention
The object of the present invention is to provide a kind of device for the test of metal material cryogenic tensile, this device utilizes liquid nitrogen to carry out temperature control, can accurately control temperature tests in 0 ℃～(196 ℃) scope, simple to operation, reasonable in design, test result is accurate, need not existing cupping machine is transformed, save cost, have characteristics safely and efficiently.
The objective of the invention is to be achieved through the following technical solutions:
A kind of device for the test of metal material cryogenic tensile, it is characterized in that: this device comprises the temperature-controlling system of the box body device of placing sample, the liquid nitrogen plan system that is used for cooling and control test temperature, described box body device comprises casing and is arranged on the case lid of casing upper end, described casing comprises internal layer and skin, and is arranged on internal layer and outer middle heat-insulation layer; Be provided be used to the fixed connection shaft that installs sample additional at case lid and bottom half; The liquid nitrogen plan system comprises liquid nitrogen container, liquid nitrogen conduit, inner liquid nitrogen pipe, gasification net and tapping valve, described liquid nitrogen container is connected with inner liquid nitrogen pipe by the liquid nitrogen conduit, inner liquid nitrogen pipe and gasification net are arranged in the casing, and it is inboard that fixed connection shaft is positioned at the gasification net, and tapping valve is arranged on lower box; Described temperature-controlling system comprises temperature sensor and temperature regulating and controlling system, and temperature sensor is connected on the casing, and an end of temperature sensor extend into box house, and the other end is connected with temperature regulating and controlling system.
Among the present invention, internal layer and skin are made by stainless steel.Heat-insulation layer is polyurethane thermal insulation board.Be provided with handle in both sides, casing top.The encapsulant that between casing and case lid, is provided with to be incubated.Described casing is right cylinder, and case lid is made up of two semicircle lids, and fixed connection shaft is arranged on the centre position of case lid and bottom half.Be provided with catheter interface at casing, the liquid nitrogen conduit is connected with inner liquid nitrogen pipe by catheter interface.
Among the present invention, box body device is used for placing sample, and box house is the main body sample chamber, and the liquid nitrogen plan system is used for cooling, and temperature-controlling system is used for controlling test temperature.Described inner liquid nitrogen pipe is used for making liquid nitrogen gasification, and the raffinate that tapping valve is used for experiment is finished is discharged.
The present invention has the following advantages:
1, adopts the aerosol cooling, prevent that liquid nitrogen from directly acting on sample, guaranteed the inhomogeneity requirement of chilling temperature;
2, good heat insulating, temperature fluctuation is little, and measurement result is accurate;
3, can be used for measuring the tension test of arbitrary temp in 0 ℃～(196 ℃) scope;
4, can carry out the sample tension test of all size;
5, the casing conveniently moving is simple to operate, and is safe and efficient.
Description of drawings
Fig. 1 is structural representation of the present invention.
Be labeled as among the figure: 1-box body device, 2-liquid nitrogen plan system, 3-temperature-controlling system, 11--casing, 111-internal layer, 112-middle heat-insulation layer, 113--skin, 12-case lid, 13-catheter interface, 14--handle, 15--fixed connection shaft, 21-liquid nitrogen container, 22-liquid nitrogen conduit, the inner liquid nitrogen pipe of 23-, 24-gasification net, 25-tapping valve, 31-temperature sensor, 32-temperature regulating and controlling system.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail,
A kind of device for the test of metal material cryogenic tensile of the present invention, the temperature-controlling system 3 that comprises the box body device 1 of placing sample, the liquid nitrogen plan system 2 that is used for cooling and control test temperature, box body device 1 comprises casing 11 and be arranged on the case lid 12 of casing 11 upper ends, the encapsulant that is provided with to be incubated between casing and case lid.Casing comprises internal layer 111 and skin 113, and is arranged on internal layer and outer middle heat-insulation layer 112; Internal layer and skin are made by stainless steel.Heat-insulation layer is polyurethane thermal insulation board.Be provided with handle 14 in both sides, casing top.Be provided be used to the fixed connection shaft 15 that installs sample additional at case lid and bottom half; Casing is right cylinder, and case lid is made up of two semicircle lids, and fixed connection shaft is arranged on the centre position of case lid and bottom half.Liquid nitrogen plan system 2 comprises liquid nitrogen container 21, liquid nitrogen conduit 22, inner liquid nitrogen pipe 23, gasification net 24 and tapping valve 25, liquid nitrogen container is connected with inner liquid nitrogen pipe by the liquid nitrogen conduit, inner liquid nitrogen pipe and gasification net are arranged in the casing, and it is inboard that fixed connection shaft is positioned at the gasification net, and tapping valve is arranged on lower box; Be provided with catheter interface 13 at casing, the liquid nitrogen conduit is connected with inner liquid nitrogen pipe by catheter interface.Temperature-controlling system 3 comprises temperature sensor 31 and temperature regulating and controlling system 32, and temperature sensor is connected on the casing, and an end of temperature sensor extend into box house, and the other end is connected with temperature regulating and controlling system.
During operation, at first, the sample that will carry out tension test fixes in the main body sample chamber that is placed on box house with coupling shaft, with filled with liquid nitrogen in the liquid nitrogen container, by conduit and catheter interface liquid nitrogen is sent in the box body device, casing is by internal layer, middle heat-insulation layer and the outer main body sample chamber of forming, and internal layer and outer field material are stainless steel, and middle heat-insulation layer is polyurethane thermal insulation board.
Box cover is made up of two semicircle case lids, the conveniently assemble and disassemble sample, and the centre is provided with a hole and is used for installing coupling shaft connection sample, and cabinet base is provided with fixed connection shaft, is used for fixedly sample.Between casing and case lid, adopt encapsulant to be incubated.The temperature range that can keep needs well.
After liquid nitrogen stream is gone into casing, after inner liquid nitrogen pipe gasification, through the gasification net sample environment temperature is reduced, temperature is evenly constant near the sample after gasifying, temperature sensor can show actual temperature in the casing, by regulating liquid nitrogen flow and control test temperature system, make test temperature remain in the scope that needs, treat can begin experiment behind the temperature stabilization.
Handle is fixed on the casing, makes things convenient for device to move.Tapping valve is used for discharging raffinate after test finishes.
The present invention utilizes liquid nitrogen to carry out temperature control, can accurately control temperature and test in 0 ℃～(196 ℃) scope, and simple to operation, test result is accurate, and cost is low, and is safe and efficient.
Claims (7)
1. one kind is used for the device that the metal material cryogenic tensile is tested, it is characterized in that: this device comprises the temperature-controlling system (3) of the box body device (1) of placing sample, the liquid nitrogen plan system (2) that is used for cooling and control test temperature, described box body device (1) comprises casing (11) and is arranged on the case lid (12) of casing (11) upper end, described casing (11) comprises internal layer (111) and outer (113), and is arranged on the heat-insulation layer (112) in the middle of internal layer (111) and outer (113); Be provided be used to the fixed connection shaft that installs sample additional (15) at case lid (12) and casing (11) bottom; Liquid nitrogen plan system (2) comprises liquid nitrogen container (21), liquid nitrogen conduit (22), inner liquid nitrogen pipe (23), gasification net (24) and tapping valve (25), described liquid nitrogen container (21) is connected with inner liquid nitrogen pipe (23) by liquid nitrogen conduit (22), inner liquid nitrogen pipe (23) and gasification net (24) are arranged in the casing (11), and fixed connection shaft (15) is positioned at gasification net (24) inboard, and tapping valve (25) is arranged on casing (11) bottom; Described temperature-controlling system (3) comprises temperature sensor (31) and temperature regulating and controlling system (32), temperature sensor (31) is connected on the casing (11), and an end of temperature sensor (31) extend into casing (11) inside, and the other end is connected with temperature regulating and controlling system (32).
2. the device for metal material cryogenic tensile test according to claim 1, it is characterized in that: heat-insulation layer (112) is polyurethane thermal insulation board.
3. the device for metal material cryogenic tensile test according to claim 1, it is characterized in that: internal layer (111) and skin (113) are made by stainless steel.
4. the device for the test of metal material cryogenic tensile according to claim 1 is characterized in that: be provided with handle (14) in casing (11) both sides, top.
5. the device for the test of metal material cryogenic tensile according to claim 1 is characterized in that: the encapsulant that is provided with to be incubated between casing (11) and case lid (12).
6. the device for metal material cryogenic tensile test according to claim 1, it is characterized in that: described casing (11) is right cylinder, case lid (12) is made up of two semicircle lids, and fixed connection shaft (15) is arranged on the centre position of case lid (12) and casing (11) bottom.
7. the device for metal material cryogenic tensile test according to claim 1, it is characterized in that: be provided with catheter interface (13) at casing (11), liquid nitrogen conduit (22) is connected with inner liquid nitrogen pipe (23) by catheter interface (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310288579.1A CN103344487B (en) | 2013-07-10 | 2013-07-10 | Device for low-temperature stretching test of metal material |
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| CN201310288579.1A CN103344487B (en) | 2013-07-10 | 2013-07-10 | Device for low-temperature stretching test of metal material |
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| CN103344487A true CN103344487A (en) | 2013-10-09 |
| CN103344487B CN103344487B (en) | 2015-05-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674681A (en) * | 2013-12-12 | 2014-03-26 | 中国建筑股份有限公司 | Steel strand mechanical test device and method in ultralow temperature environment |
| CN107421803A (en) * | 2017-06-14 | 2017-12-01 | 合肥工业大学 | The controllable aluminium alloy compression device of a kind of temperature and strain rate and method of testing |
| CN113155592A (en) * | 2021-04-08 | 2021-07-23 | 哈尔滨工业大学（威海） | Metal material low temperature tensile test device |
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| CN101598648A (en) * | 2009-05-15 | 2009-12-09 | 重庆理工大学 | Double space material cold-heat simulation experiment device |
| CN101706395A (en) * | 2009-11-18 | 2010-05-12 | 南京工业大学 | Device for measuring hydrogen brittleness sensitivity of material in low-temperature environment |
| CN102331374A (en) * | 2011-06-09 | 2012-01-25 | 振石集团东方特钢股份有限公司 | Low-temperature tensile test device for metal material |
| CN102645369A (en) * | 2012-04-27 | 2012-08-22 | 深圳市建筑科学研究院有限公司 | Low-temperature tensile test device |
| CN203396634U (en) * | 2013-07-10 | 2014-01-15 | 南京钢铁股份有限公司 | Device for low-temperature tensile test of metal material |
-
2013
- 2013-07-10 CN CN201310288579.1A patent/CN103344487B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598648A (en) * | 2009-05-15 | 2009-12-09 | 重庆理工大学 | Double space material cold-heat simulation experiment device |
| CN101706395A (en) * | 2009-11-18 | 2010-05-12 | 南京工业大学 | Device for measuring hydrogen brittleness sensitivity of material in low-temperature environment |
| CN102331374A (en) * | 2011-06-09 | 2012-01-25 | 振石集团东方特钢股份有限公司 | Low-temperature tensile test device for metal material |
| CN102645369A (en) * | 2012-04-27 | 2012-08-22 | 深圳市建筑科学研究院有限公司 | Low-temperature tensile test device |
| CN203396634U (en) * | 2013-07-10 | 2014-01-15 | 南京钢铁股份有限公司 | Device for low-temperature tensile test of metal material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674681A (en) * | 2013-12-12 | 2014-03-26 | 中国建筑股份有限公司 | Steel strand mechanical test device and method in ultralow temperature environment |
| CN107421803A (en) * | 2017-06-14 | 2017-12-01 | 合肥工业大学 | The controllable aluminium alloy compression device of a kind of temperature and strain rate and method of testing |
| CN113155592A (en) * | 2021-04-08 | 2021-07-23 | 哈尔滨工业大学（威海） | Metal material low temperature tensile test device |
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| CN103344487B (en) | 2015-05-27 |
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