CN111307610A - High-temperature wire material tensile test device and method - Google Patents
High-temperature wire material tensile test device and method Download PDFInfo
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- CN111307610A CN111307610A CN202010245075.1A CN202010245075A CN111307610A CN 111307610 A CN111307610 A CN 111307610A CN 202010245075 A CN202010245075 A CN 202010245075A CN 111307610 A CN111307610 A CN 111307610A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a high-temperature wire material tensile test device and a method, comprising a heat-insulating cylinder and an inner cylinder; the heat-insulating cylinder is nested outside the inner cylinder, and a heating device is arranged between the heat-insulating cylinder and the inner cylinder; the top of the inner cylinder is connected with the bottom of a wire connecting rod through a sealing piston, a displacement sensor is arranged between the wire connecting rod and the top of the inner cylinder, the top of the wire connecting rod is coaxially connected with the bottom of an upper connecting rod, and a tension sensor is arranged at the connection position of the upper connecting rod and the wire connecting rod; the bottom of the heat-preservation cylinder is hermetically and detachably connected with the periphery of a lower connecting rod, the top of the lower connecting rod penetrates through the bottom of the inner cylinder and is positioned in the inner cylinder, and a wire clamp is arranged at the top of the lower connecting rod. Can be connected with a universal testing machine, and can perform high-temperature tensile test on the wire member in a safe environment.
Description
Technical Field
The invention belongs to the field of metal material testing, and relates to a high-temperature wire material tensile test device and method.
Background
The test research and evaluation of the high-temperature mechanical property of the special metal material and the building structure material, especially in the phase change research of novel intelligent metal materials, in the mechanical test and training of metal materials, and in the fields of building fire prevention and extreme high-temperature environment, have extremely important significance. In actual research, under the ultra-high temperature environment, traditional universal tester is limited, and many functions can not normally work to under the high temperature environment, improved experimenter's danger coefficient, it is too low to lead to experimental efficiency, consequently need develop one kind can with universal tester convenient connection in research and the production, dependable performance, and the higher test device of factor of safety, satisfy the demand of experimental and test under the high temperature environment.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-temperature wire tensile test device and a high-temperature wire tensile test method, which can be connected with a universal testing machine to perform high-temperature tensile test on a wire member in a safe environment.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a high-temperature wire material tensile test device comprises a heat-insulating cylinder and an inner cylinder;
the heat-insulating cylinder is nested outside the inner cylinder, and a heating device is arranged between the heat-insulating cylinder and the inner cylinder;
the top of the inner cylinder is connected with the bottom of a wire connecting rod through a sealing piston, a displacement sensor is arranged between the wire connecting rod and the top of the inner cylinder, the top of the wire connecting rod is coaxially connected with the bottom of an upper connecting rod, and a tension sensor is arranged at the connection position of the upper connecting rod and the wire connecting rod;
the bottom of the heat-preservation cylinder is hermetically and detachably connected with the periphery of a lower connecting rod, the top of the lower connecting rod penetrates through the bottom of the inner cylinder and is positioned in the inner cylinder, and a wire clamp is arranged at the top of the lower connecting rod.
Preferably, the wire connecting rod is provided with a conical hole coaxial with the inner cylinder, the small end of the conical hole faces the bottom of the inner cylinder, and a wedge-shaped block is arranged in the conical hole.
Preferably, a heat insulation layer is arranged between the heat preservation cylinder and the heating device.
Preferably, a first temperature sensor is arranged in the inner barrel.
Furthermore, the top and the bottom of the inner cylinder are respectively provided with a first temperature sensor.
Preferably, the heating device is attached to the outer wall of the inner cylinder, and the heat-insulating cylinder and the heating device are arranged in a clearance mode.
Preferably, the outer wall of the heat-insulating cylinder is provided with a second temperature sensor.
Preferably, the outer wall of the heat-insulating cylinder is provided with a control panel, and the output end of the control panel is connected with the input end of the heating device.
A high-temperature wire material tensile test method based on the test device comprises the following steps;
firstly, a wire connecting rod and a wire clamp are respectively connected with two ends of a wire member;
step two, the upper connecting rod and the lower connecting rod are respectively connected with clamps at two ends of the universal testing machine and are subjected to opposite tensile forces, the tensile force sensor and the displacement sensor respectively acquire the magnitude of the tensile force and the elongation length of the wire member, and the stress-strain relationship and the stress-displacement relationship of the wire member are obtained according to the magnitude of the tensile force and the elongation length of the wire member;
and step three, controlling the heating temperature of the heating device, repeating the step two, and obtaining the stress-strain relationship and the stress-displacement relationship of the wire member at different high temperatures according to different heating temperatures of the heating device each time.
Preferably, the step one comprises the following steps;
1.1, fixing the bottom of a wire member on a wire clamp, extending the wire member and the wire clamp into the inner cylinder from the bottom of the inner cylinder, and sealing and fixing a lower connecting rod and the bottom of the heat-insulating cylinder;
1.2, the bottom of a wire connecting rod extends into the inner cylinder from the top of the inner cylinder, the top of a wire member extends into a through hole of the wire connecting rod, a wedge-shaped block extends into the through hole of the wire connecting rod from the top of the wire member, and the top of the wire member is fixed;
1.3, the wire connecting rod is connected with the top sealing piston of the inner cylinder, and the top of the wire connecting rod is connected with the upper connecting rod.
Compared with the prior art, the invention has the following beneficial effects:
the upper connecting rod and the lower connecting rod of the device can be connected with a universal testing machine to perform tensile test on the wire members in the device, the device is high in universality and can be connected with the existing testing device for use, the temperature in the inner cylinder is controlled through the heating device in the three-layer structure, the heat-insulating cylinder insulates heat of the heating device to prevent high-temperature leakage, the safety coefficient in the testing process is improved, the wire members can be subjected to tensile test in different high-temperature environments, the whole device is small in size, and the testing efficiency is high.
Further, the silk material component can stretch into in the bell mouth of silk material connecting rod and fix through the wedge, and the silk material connecting rod can be dismantled with lower connecting rod and be connected on the device, can accomplish fixedly with the silk material component in the device outside, avoids operating personnel to install in the inner tube, has reduced danger coefficient.
Furthermore, the temperature and the uniformity in the inner cylinder can be judged through the first temperature sensor at the top and the bottom of the inner cylinder, so that the temperature of the inner cylinder is accurately controlled.
Furthermore, through the second temperature sensor of heat preservation section of thick bamboo outer wall, can detect the temperature condition of heat preservation section of thick bamboo outer wall at any time, can judge whether high temperature in the device leaks, can in time avoid the harm that the high temperature leaked the production.
According to the method, the upper connecting rod and the lower connecting rod are connected with the universal testing machine, the wire member in the device can be subjected to tensile test, the test universality is high, the heating temperature of the heating device is controlled, and the tensile test of the wire member in different high-temperature environments can be realized.
Further, the wire member can be fixedly connected with the wire connecting rod and the lower connecting rod outside the device, so that an operator is prevented from installing in the inner cylinder, and the risk coefficient is reduced.
Drawings
FIG. 1 is a front sectional view of the apparatus of the present invention;
fig. 2 is a cross-sectional view a-a of fig. 1 of the present invention.
Wherein: 1-a heat preservation cylinder; 2-inner cylinder; 3-a heating device; 4-lower connecting rod; 5-an upper connecting rod; 6-a heat insulation layer; 7-a wire member; 8-a displacement sensor; 9-a first temperature sensor; 10-a second temperature sensor; 11-a tension sensor; 12-a wire clamp; 13-wire connecting rod; 14-a wedge block; 15-a connecting sleeve; 16-a control panel; 17-power and data interface.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in FIGS. 1 and 2, the high-temperature wire tensile test device of the present invention comprises a thermal insulation cylinder 1, an inner cylinder 2, a pipeline, an upper connecting rod 5 and a lower connecting rod 4.
The heat-insulating cylinder 1 is nested outside the inner cylinder 2 and arranged in a clearance with the inner cylinder 2, the heating device 3 is arranged between the heat-insulating cylinder 1 and the inner cylinder 2, the heating device 3 can adopt a high-temperature resistant electric heating wire, the heat-insulating layer 6 is arranged between the heat-insulating cylinder 1 and the heating device 3, the heat-insulating layer 6 is made of high-temperature resistant ceramics, and the heating device 3 is attached to the outer wall of the inner cylinder 2.
The inner cylinder 2 is made of high-temperature-resistant ceramics, and the bottom and the top of the inner cylinder 2 are respectively provided with a first temperature sensor 9 which can monitor the temperature at two ends of the inner cylinder 2 in real time. Thereby, the temperature and uniformity inside the inner cylinder 2 can be judged.
The outer wall of the heat preservation cylinder 1 is provided with the second temperature sensor 10, the temperature condition of the outer wall of the heat preservation cylinder can be detected at any time, whether high temperature in the device leaks or not can be judged, and the damage caused by high temperature leakage can be avoided in time.
The bottom of the lower connecting rod 4 is connected with a tensile machine clamp, the top of the lower connecting rod 4 penetrates through the bottom of the inner cylinder 2 and is positioned in the inner cylinder 2, and the lower connecting rod 4 is close to the top circumference and is connected with the inner wall of the bottom of the heat-insulating cylinder 1 through sealing threads. The top of the lower connecting rod 4 is connected with a wire clamp 12 through a nut, before test preparation, the wire clamp 12 is firstly used for clamping the bottom of the wire member 7, and then the lower connecting rod 4 is fixed at the bottom of the heat preservation cylinder 1.
The wire connecting rod 13 is a movable piston and is connected with the top of the inner cylinder 2, and a certain up-and-down piston movement space is reserved at the position. The wire connecting rod 13 is provided with a through hole which is coaxial with the inner cylinder 2, a wedge block 14 is arranged in the through hole, and the wedge block 14 is matched with the through hole to fix the wire member 7.
The top of the upper connecting rod 5 is connected with a universal testing machine clamp, and the bottom of the upper connecting rod 5 is connected with a wire connecting rod 13 through a connecting sleeve 15. A tension sensor 11 is arranged in the upper connecting rod 5, the tension sensor 11 can adopt a rod shaft tension sensor 11, and the tension value of the testing device for the wire high-temperature tensile test can be monitored in real time. The displacement sensor 8 is arranged at the top of the inner cylinder 2, the displacement strain sensor can adopt the displacement sensor 8, and the elongation value of the wire member 7 under the action of tension can be monitored in real time.
The control panel 16 is positioned at the outer side of the heat preservation cylinder 1 and is provided with a power supply and data interface 17. The control panel 16 collects real-time data measured by the first temperature sensor 9, the second temperature sensor 10, the displacement sensor 8 and the pressure sensor 15 through the source and data interface, the output end of the control panel 16 is connected with the input end of the heating device 3, and controls the heating device 3 according to instructions to achieve the effect of adjusting the temperature.
When the test device is used for carrying out a high-temperature wire drawing test method, the bottom of a wire member 7 is fixed on a wire clamp 12, the wire member 7 and the wire clamp 12 extend into the inner cylinder 2 from the bottom of the inner cylinder 2, and the lower connecting rod 4 is fixed with the bottom of the heat-insulating cylinder 1 in a sealing manner; the bottom of the wire connecting rod 13 extends into the inner cylinder 2 from the top of the inner cylinder 2, the top of the wire member 7 extends into a through hole of the wire connecting rod 13, and then the wedge-shaped block 14 extends into the through hole of the wire connecting rod 13 from the top of the wire member 7 to fix the top of the wire member 7; the wire connecting rod 13 is connected with the top sealing piston of the inner cylinder 2, and the top of the wire connecting rod 13 is connected with the upper connecting rod 5. The lower connecting rod 4 and the upper connecting rod 5 are respectively connected with a universal tester clamp, and a tension machine is debugged to apply pretension force.
After the test device is installed, the control panel 16 turns on the heating device 3 according to the temperature environment instruction of the requirement, the control panel 16 adjusts the heating temperature of the heating device 3 according to the temperature collected by the first temperature sensor 9 in real time, and the tensile test is started until the environment temperature of the inner cylinder 2 reaches the uniform and stable test condition temperature.
When the tensile test is started, the control panel 16 records the tensile value and the strain signal transmitted by the displacement sensor 8 in real time to obtain a stress-strain or stress-displacement curve chart of the wire member 7. By varying the heating temperature of the heating device 3, stress-strain curves and stress-displacement curves of the wire member 7 at different high temperatures can be obtained.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. A high-temperature wire material tensile test device is characterized by comprising a heat-insulating cylinder (1) and an inner cylinder (2);
the heat-insulating cylinder (1) is nested outside the inner cylinder (2), and a heating device (3) is arranged between the heat-insulating cylinder (1) and the inner cylinder (2);
the top of the inner cylinder (2) is connected with the bottom of a wire connecting rod (13) through a sealing piston, a displacement sensor (8) is arranged between the wire connecting rod (13) and the top of the inner cylinder, the top of the wire connecting rod (13) is coaxially connected with the bottom of an upper connecting rod (5), and a tension sensor (11) is arranged at the joint of the upper connecting rod (5) and the wire connecting rod (13);
the bottom of the heat preservation cylinder (1) is hermetically and detachably connected with the circumferential surface of a lower connecting rod (4), the top of the lower connecting rod (4) penetrates through the bottom of the inner cylinder (2) and is positioned in the inner cylinder (2), and a wire clamp (7) is arranged at the top of the lower connecting rod (4).
2. The high-temperature wire tensile test device according to claim 1, wherein the wire connecting rod (13) is provided with a conical hole coaxial with the inner cylinder (2), the small end of the conical hole faces the bottom of the inner cylinder (2), and a wedge-shaped block (14) is arranged in the conical hole.
3. The high-temperature wire tensile test device according to claim 1, wherein a heat insulation layer (6) is arranged between the heat preservation cylinder (1) and the heating device (3).
4. The high temperature wire tensile test testing apparatus of claim 1, wherein a first temperature sensor (9) is disposed within the inner barrel.
5. The high-temperature wire tensile test device according to claim 4, wherein the inner top and the bottom of the inner cylinder (2) are respectively provided with a first temperature sensor (9).
6. The high-temperature wire tensile test device according to claim 1, wherein the heating device (3) is attached to the outer wall of the inner cylinder (2), and the heat-insulating cylinder (1) and the heating device (3) are arranged in a clearance manner.
7. The high-temperature wire tensile test device according to claim 1, wherein the outer wall of the heat-insulating cylinder (1) is provided with a second temperature sensor (10).
8. The high-temperature wire material tensile test device according to claim 1, wherein a control panel (16) is arranged on the outer wall of the heat-preserving cylinder (1), and the output end of the control panel (16) is connected with the input end of the heating device (3).
9. A high temperature wire tensile test method based on the test device according to any one of claims 1 to 7, comprising the steps of;
firstly, a wire connecting rod (13) and a wire clamp (12) are respectively connected with two ends of a wire component (7);
step two, the upper connecting rod (5) and the lower connecting rod (4) are respectively connected with clamps at two ends of a universal testing machine and are subjected to opposite tension, the tension sensor (11) and the displacement sensor (8) respectively acquire the tension and the extension length of the wire member (7), and the stress-strain relationship and the stress-displacement relationship of the wire member (7) are obtained according to the tension and the extension length of the wire member (7);
and step three, controlling the heating temperature of the heating device (3), repeating the step two, and obtaining the stress-strain relationship and the stress-displacement relationship of the wire member (7) at different high temperatures by the heating temperature of the heating device (3) different each time.
10. The high temperature wire tensile test method of claim 9, wherein step one, comprises the steps of;
1.1, fixing the bottom of a wire member (7) on a wire clamp (7), extending the wire member (7) and the wire clamp (7) into the inner cylinder (2) from the bottom of the inner cylinder (2), and hermetically fixing a lower connecting rod (4) with the bottom of the heat-insulating cylinder (1);
1.2, the bottom of a wire connecting rod (13) extends into the inner cylinder (2) from the top of the inner cylinder (2), the top of a wire member (7) extends into a through hole of the wire connecting rod (13), then a wedge-shaped block (14) extends into the through hole of the wire connecting rod (13) from the top of the wire member (7), and the top of the wire member (7) is fixed;
1.3, the wire connecting rod (13) is connected with the top sealing piston of the inner cylinder (2), and the top of the wire connecting rod (13) is connected with the upper connecting rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245075.1A CN111307610A (en) | 2020-03-31 | 2020-03-31 | High-temperature wire material tensile test device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010245075.1A CN111307610A (en) | 2020-03-31 | 2020-03-31 | High-temperature wire material tensile test device and method |
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| CN111307610A true CN111307610A (en) | 2020-06-19 |
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| CN202010245075.1A Pending CN111307610A (en) | 2020-03-31 | 2020-03-31 | High-temperature wire material tensile test device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116296740A (en) * | 2022-12-30 | 2023-06-23 | 中机试验装备股份有限公司 | High-temperature mechanical property testing device and testing system based on controllable water-oxygen environment |
-
2020
- 2020-03-31 CN CN202010245075.1A patent/CN111307610A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116296740A (en) * | 2022-12-30 | 2023-06-23 | 中机试验装备股份有限公司 | High-temperature mechanical property testing device and testing system based on controllable water-oxygen environment |
| CN116296740B (en) * | 2022-12-30 | 2024-06-04 | 中机试验装备股份有限公司 | High-temperature mechanical property testing device and testing system based on controllable water-oxygen environment |
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