CN203396654U - Low-temperature tensile test system for twisted steel - Google Patents
Low-temperature tensile test system for twisted steel Download PDFInfo
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- CN203396654U CN203396654U CN201320411881.7U CN201320411881U CN203396654U CN 203396654 U CN203396654 U CN 203396654U CN 201320411881 U CN201320411881 U CN 201320411881U CN 203396654 U CN203396654 U CN 203396654U
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- liquid nitrogen
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- deformed bar
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Abstract
The utility model discloses a low-temperature tensile test system for twisted steel. The device comprises a box device for containing a sample, a liquid nitrogen device system for cooling, a temperature control system for controlling test temperature, and a tensile test device, wherein the box device comprises an inner layer, an intermediate insulating layer, an outer layer, a base and a box cover; the liquid nitrogen device system consists of a liquid nitrogen tank, a duct, a duct joint, an internal liquid nitrogen pipe, a gasification net and a drain valve; the temperature control system consists of a temperature sensor and a temperature control and regulation system; the tensile test device comprises a tensile testing machine and a connecting rod connected with the tensile testing machine. According to the low-temperature tensile test system, the temperature is controlled according to liquid nitrogen, and the temperature can be accurately controlled to be in a range from 196 DEG C below zero to 0 DEG C so as to carry out the test. The low-temperature tensile test system is simple and convenient to operate, reasonable in design, uniform in temperature and accurate in test result and can be moved to any one electronic tensile testing machine to perform a tensile test, the trouble of transforming an existing tensile testing machine is avoided, the cost is saved, and the system is safe and high in efficiency.
Description
Technical field
The utility model relates to a kind of test device systematic, specifically a kind of tensile test apparatus system for low temperature deformed bar.
Background technology
Develop rapidly along with modern every profession and trade, increasing steel need to be used in low temperature environment, as low temperature deformed bar, low-temperature pressure container and bridge steel plate etc., how every mechanical property of these materials is carried out to Measurement accuracy and also just seem most important, especially the tensile property index such as the yield strength of sample, tensile strength, extensibility and reduction of area.And deformed bar is due to its special shape, the restriction of wanting summation device correlated condition due to temperature when carrying out cryogenic tensile test never has a measuring method accurately and conveniently.
Because the temperature of liquid nitrogen is subzero 196 degree, the sample of the tensile property of spending for test subzero 196 can directly be measured in liquid, but when the performance temperature scope of sample to be tested 0 ℃～when (196 ℃), be difficult to temperature accurately to control, add the special shape of deformed bar, its cryogenic tensile test is difficult to successfully realize.
Summary of the invention
The purpose of this utility model is to provide a kind of low-temperature tensile test device system for deformed bar, this system 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, without existing cupping machine is transformed, cost-saving, there is feature safely and efficiently.
The purpose of this utility model is 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 comprise place the box body device of sample, for cooling liquid nitrogen plan system, temperature-controlling system and the tensile test apparatus of Control experiment 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; Described tensile test apparatus comprises cupping machine and the connecting link being connected with cupping machine, for installing the connecting link of sample additional, is arranged on case lid and bottom half; 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 liquid nitrogen conduit, inner liquid nitrogen pipe and gasification net are arranged in casing, and fixed connection shaft is positioned at gasification net inner side, and tapping valve is arranged on lower box; Described temperature-controlling system comprises temperature sensor and temperature controlling and regulating system, and temperature sensor is connected on casing, and one end of temperature sensor extend into box house, and the other end is connected with temperature controlling and regulating system.
In the utility model, internal layer and skin are made by stainless steel.Heat-insulation layer is polyurethane thermal insulation board.In both sides, casing top, be provided with handle.Between casing and case lid, be provided with the encapsulant for insulation.Described casing is right cylinder, and case lid is comprised of two semicircle lids, and fixed connection shaft is arranged on the centre position of case lid and bottom half.On casing, be provided with catheter interface, liquid nitrogen conduit is connected with inner liquid nitrogen pipe by catheter interface.Connecting link is connected with cupping machine by stationary shaft.
In the utility model, box body device is used for placing sample, and box house is main body sample chamber, and liquid nitrogen plan system is for cooling, and temperature-controlling system is used for Control experiment temperature.Described inner liquid nitrogen pipe is used for making liquid nitrogen gasification, and tapping valve is for discharging the complete raffinate of experiment.
The utlity model has following advantage:
1,, without existing cupping machine is transformed, test is convenient, safety, and efficiency is high;
2, adopt aerosol cooling, prevent that liquid nitrogen from directly acting on sample, guaranteed the inhomogeneity requirement of chilling temperature;
3, good heat insulating, temperature fluctuation is little, and measurement result is accurate;
4, can be used for measuring the tension test of arbitrary temp in 0 ℃～(196 ℃) scope;
5, can carry out the sample tensile test of the deformed bar of all size.
The utility model utilizes liquid nitrogen to carry out temperature control, can accurately control temperature and test in 0 ℃～(196 ℃) scope, and simple to operation, reasonable in design, test result is accurate, and without existing cupping machine is transformed, cost is low, safe and efficient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is deformed bar cryogenic tensile trial curve figure in the utility model.
In Fig. 1, be labeled as: 1-box body device, 2-liquid nitrogen plan system, 3-temperature-controlling system, 4-tensile test apparatus, 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-, the 24-net that gasifies, 25-tapping valve, 31-temperature sensor, 32-temperature controlling and regulating system, 41-connecting link, 42-stationary shaft, 15-test sample.
Embodiment
Below in conjunction with 1 pair of the utility model device of accompanying drawing, be described in further detail.
A kind of device for the test of metal material cryogenic tensile, comprise place the box body device 1 of sample, for temperature-controlling system 3 and the tensile test apparatus 4 of cooling liquid nitrogen plan system 2, Control experiment temperature, box body device 1 comprises casing 11 and is arranged on the case lid 12 of casing 11 upper ends, is provided with the encapsulant for insulation 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.In both sides, casing top, be provided with handle 14.Tensile test apparatus 4 comprises cupping machine (not marking in figure) and the stationary shaft 42 being connected with cupping machine and connecting link 41, for installing the connecting link of sample 15 additional, is arranged on case lid and bottom half; Casing is right cylinder, and case lid is comprised of two semicircle lids, and connecting link 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 liquid nitrogen conduit, inner liquid nitrogen pipe and gasification net are arranged in casing, and connecting link is positioned at gasification net inner side, and tapping valve is arranged on lower box; On casing, be provided with catheter interface 13, liquid nitrogen conduit is connected with inner liquid nitrogen pipe by catheter interface.Temperature-controlling system 3 comprises temperature sensor 31 and temperature controlling and regulating system 32, and temperature sensor is connected on casing, and one end of temperature sensor extend into box house, and the other end is connected with temperature controlling and regulating system.
During operation, first, the deformed bar sample 15 that will carry out tension test is used lower connecting rod and is installed, then connects with stationary shaft, is connected with electronic tensile test machine.By filled with liquid nitrogen in liquid nitrogen container, by conduit and catheter interface, liquid nitrogen to be sent in box body device, casing is by internal layer, middle heat-insulation layer and the outer main body sample chamber forming, and internal layer and outer field material are stainless steel, and middle heat-insulation layer is polyurethane thermal insulation board.
Case lid is comprised of two semicircle upper covers, conveniently assemble and disassemble sample, and centre is provided with a hole and connects sample for connecting link is installed, and cabinet base is also provided with hole and connects sample for connecting link is installed.Between casing and case lid, adopt encapsulant to be incubated, can keep well the temperature range of needs.
Liquid nitrogen stream enters after casing, after inner liquid nitrogen pipe gasification, through gasification net, sample environment temperature is reduced, after gasification, near sample, temperature is evenly constant, temperature sensor can show actual temperature in casing, by regulating liquid nitrogen flow and Control experiment temperature system, test temperature is remained in the scope needing, after temperature stabilization, can start experiment.
After experiment, remove case lid half, sample is shifted out, measure, obtain the relevant mechanical performance data of tension test: yield strength, tensile strength, extensibility etc.Handle is fixed on casing, facilitates device to move.Tapping valve discharges raffinate after testing.
Claims (8)
1. the cryogenic tensile pilot system for deformed bar, it is characterized in that: this system comprise place the box body device (1) of sample, for temperature-controlling system (3) and the tensile test apparatus (4) of cooling liquid nitrogen plan system (2), Control experiment 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); Described tensile test apparatus (4) comprises cupping machine and the connecting link being connected with cupping machine (41), for installing the connecting link (41) of sample additional, is arranged on 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 casing (11), and connecting link (41) is positioned at gasification net (24) inner side, and tapping valve (25) is arranged on casing (11) bottom; Described temperature-controlling system (3) comprises temperature sensor (31) and temperature controlling and regulating system (32), temperature sensor (31) is connected on casing (11), and one end of temperature sensor (31) extend into casing (11) inside, the other end is connected with temperature controlling and regulating system (32).
2. the cryogenic tensile pilot system for deformed bar according to claim 1, is characterized in that: heat-insulation layer (112) is polyurethane thermal insulation board.
3. the cryogenic tensile pilot system for deformed bar according to claim 1, is characterized in that: make by stainless steel internal layer (111) and outer (113).
4. the cryogenic tensile pilot system for deformed bar according to claim 1, is characterized in that: in casing (11) both sides, top, be provided with handle (14).
5. the cryogenic tensile pilot system for deformed bar according to claim 1, is characterized in that: between casing (11) and case lid (12), be provided with the encapsulant for insulation.
6. the cryogenic tensile pilot system for deformed bar according to claim 1, it is characterized in that: described casing (11) is right cylinder, case lid (12) is comprised of two semicircle lids, and connecting link (41) is arranged on the centre position of case lid (12) and casing (11) bottom.
7. the cryogenic tensile pilot system for deformed bar according to claim 1, is characterized in that: on casing (11), be provided with catheter interface (13), liquid nitrogen conduit (22) is connected with inner liquid nitrogen pipe (23) by catheter interface (13).
8. the cryogenic tensile pilot system for deformed bar according to claim 1, is characterized in that: connecting link (41) is connected with cupping machine by stationary shaft (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320411881.7U CN203396654U (en) | 2013-07-10 | 2013-07-10 | Low-temperature tensile test system for twisted steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320411881.7U CN203396654U (en) | 2013-07-10 | 2013-07-10 | Low-temperature tensile test system for twisted steel |
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| Publication Number | Publication Date |
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| CN203396654U true CN203396654U (en) | 2014-01-15 |
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| CN201320411881.7U Expired - Lifetime CN203396654U (en) | 2013-07-10 | 2013-07-10 | Low-temperature tensile test system for twisted steel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344505A (en) * | 2013-07-10 | 2013-10-09 | 南京钢铁股份有限公司 | Low-temperature stretching test system for twisted steel |
| CN104142273A (en) * | 2014-08-20 | 2014-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Metal material low-temperature tensile test device and test method |
| CN105203381A (en) * | 2015-09-25 | 2015-12-30 | 中国石油大学(北京) | Low-temperature cooling pressure applying device |
| CN105891006A (en) * | 2016-06-20 | 2016-08-24 | 国网内蒙古东部电力有限公司经济技术研究院 | Low-temperature tension test device of bolt connection joint |
| CN107861543A (en) * | 2017-12-27 | 2018-03-30 | 浙江工业大学 | A kind of microtensile testing machine temperature control box |
| CN108627403A (en) * | 2018-07-02 | 2018-10-09 | 西安石油大学 | A kind of cryogenic test equipment |
-
2013
- 2013-07-10 CN CN201320411881.7U patent/CN203396654U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344505A (en) * | 2013-07-10 | 2013-10-09 | 南京钢铁股份有限公司 | Low-temperature stretching test system for twisted steel |
| CN104142273A (en) * | 2014-08-20 | 2014-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Metal material low-temperature tensile test device and test method |
| CN105203381A (en) * | 2015-09-25 | 2015-12-30 | 中国石油大学(北京) | Low-temperature cooling pressure applying device |
| CN105203381B (en) * | 2015-09-25 | 2018-05-08 | 中国石油大学(北京) | A kind of sub-cooled device for exerting |
| CN105891006A (en) * | 2016-06-20 | 2016-08-24 | 国网内蒙古东部电力有限公司经济技术研究院 | Low-temperature tension test device of bolt connection joint |
| CN107861543A (en) * | 2017-12-27 | 2018-03-30 | 浙江工业大学 | A kind of microtensile testing machine temperature control box |
| CN108627403A (en) * | 2018-07-02 | 2018-10-09 | 西安石油大学 | A kind of cryogenic test equipment |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20140115 |
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| CX01 | Expiry of patent term |