CN111272572A - Multi-head tensile testing machine - Google Patents
Multi-head tensile testing machine Download PDFInfo
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- CN111272572A CN111272572A CN201910820986.XA CN201910820986A CN111272572A CN 111272572 A CN111272572 A CN 111272572A CN 201910820986 A CN201910820986 A CN 201910820986A CN 111272572 A CN111272572 A CN 111272572A
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- testing machine
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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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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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
- G01N3/06—Special adaptations of indicating or recording 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
- G01N2203/0014—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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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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
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0464—Chucks, fixtures, jaws, holders or anvils with provisions for testing more than one specimen at the time
- G01N2203/0476—Chucks, fixtures, jaws, holders or anvils with provisions for testing more than one specimen at the time in parallel
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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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a multi-head tensile testing machine, which belongs to special equipment in the technical field of testing machines and is provided with three independent sets of tensile devices, and three samples can be made at one time under the same testing condition. The traditional drawing device is replaced, so that the production efficiency is improved, and the cost is reduced. The three stretching devices share one heating furnace, and the heating furnace is in split type direct radiation type heating, the length of a constant temperature area is 100-300mm, and the temperature range is 100-1400 ℃. Three thermocouples monitor the upper, middle and lower changes of the constant temperature area and input signals into the artificial intelligent temperature controller for regulation. And an asbestos rope is not used in the test, so that the test is pollution-free and environment-friendly. And (3) carrying out a micro deformation test, namely installing an extension rod on the sample gauge length, extending out of the furnace and connecting a displacement sensor and a data acquisition system AWS. The test report was printed via computer processing. Time and labor are saved, the production efficiency is improved, the cost is reduced, and the quality is improved.
Description
The technical field is as follows:
the multi-head tensile testing machine belongs to the special equipment in the technical field of testing machines, and is suitable for testing various mechanical property parameters of metal materials under the conditions of room temperature and high temperature.
Background art:
at present, a tensile testing machine produced at home and abroad only has one set of tensile device, and only one test can be carried out at one time; the production efficiency is low, the cost is high, a group of tests need to be repeated for at least three times, the influence factors are many, the analysis of test results is not facilitated, and the improvement of test quality is influenced. The existing multi-head testing machines are different from each other, and can not achieve the purpose that one machine completes one group of tests at a time. When a high-temperature test is carried out, the thermocouple needs to be bound by the asbestos rope, so that the environment pollution is caused, and the environment is not protected.
The invention content is as follows:
according to the existing problems, the multi-head tensile testing machine with three sets of tensile devices which are independently controlled and do not interfere with each other is invented, and one heating furnace is shared. The traditional drawing device is replaced, the production efficiency is improved by 200%, the test cost is reduced by 200%, and the market competitiveness is strong. A group of tests (three samples) can be completed by one test under the same test conditions, and the temperature is uniformly regulated and controlled. The whole test process does not use asbestos ropes, thereby being beneficial to environmental protection and personal health.
The machine has five parts as shown in figures 1-A and 1-B
1. Three universal joints of host upper beam
2. Heating furnace, furnace frame, artificial intelligence temperature control system and thermocouple
3. A clamp: both circular and plate-shaped
4. Recording system, displacement sensor, force sensor, AWS system and computer
5. Extension rod and displacement sensor
The technical problem scheme of the multi-head tensile testing machine is as follows:
1. the multi-head tensile testing machine is characterized in that: the main machine is provided with a door frame type structure, three universal joints (1-2) are respectively fixed at the center position of a beam (1-1) according to the radius of 120 degrees and 25mm, and are connected with respective pull rods (1-3), samples (1-5) and lower pull rods (1-7) and then three force sensors of a base to form three independent stretching devices. When micro deformation is carried out, the sample gauge length is provided with the extension rod and extends out of the furnace to be connected with the displacement sensor (1-11), and the data collection system AWS processes and prints a report through a computer.
2. The multi-head tensile testing machine is characterized in that three sets of tensile devices share one heating furnace (1-4) and samples (1-6) and are positioned in a constant temperature area, three thermocouples are inserted through ①②③ holes and fixed on the upper part of the furnace, the lower part of the furnace monitors the change of the constant temperature area and transmits signals to an artificial intelligent temperature controller for adjustment, so that the upper, middle and lower temperatures are consistent until the test is finished.
3. The multi-head tensile testing machine is characterized in that: the heating furnaces (1-4) are split type direct radiation heating, the sensitivity is high, the reaction is fast, the temperature range is 100-. The application range is wide, and the superplastic test can be carried out.
4. The multi-head tensile testing machine is characterized in that: the test fixture (1-3) is full and can be used for making a gauge length with the thickness of 2.0mm25mm, 5mm circular diameter and 25mm gauge length. The extension rods (1-10) select corresponding chucks to match with the sample scale distance according to the shape of the sample, the round sample selects the combination of figures 5a, b and c, and the plate selects the figure 5a1、b1、c1And (4) combining. The displacement sensors (1-11) can be differential transformer resistance strain gauges or other displacement sensors, and the accuracy is more than or equal to one thousandth.
The invention has the beneficial effects on the prior art
Because three sets of stretching devices and one heating furnace are selected, the production efficiency is improved by 200 percent, the test cost is reduced by 200 percent, the test quality is improved, and the device is environment-friendly, time-saving, labor-saving and material-saving.
The whole structure design is compact, and the use is convenient. The up and down movement of the beam is accomplished by the servo system of the machine itself. The temperature control system only uses one clamp, the connection between the clamps mainly uses pins, and only two ends of the round sample use threads. The fixture is processed by structural steel below 500 ℃ and heat-resistant alloy above 500 ℃. The extension rod is processed by heat-resistant alloy. Finished products can be selected for each sensor, and the precision is greater than or equal to one thousandth.
Description of the drawings:
FIG. 1: the assembly is schematic: 1-A without extension bar and 1-B with extension bar
1-1, upper beam: fixing three universal joints
1-2 and universal joint: connect the upper tie rod to adjust the concentricity
1-3, an upper pull rod: upper-connected universal joint lower-connected sample
1-4, heating furnace: the heating sample is fixed on the base
1-5, heating body diameter 1.0mm material iron chromium aluminium
1-6, sample: test specimen of the sample material to be tested
1-7, a lower pull rod: upper connecting sample lower connector
1- - -8, furnace frame
1- - -9 guide rail bracket
1- - -10, extension rod
1- - -11 displacement sensor
1- - -12, joint
1-13, a force sensor: upper-lower-connecting-rod lower-connecting base and data acquisition system
1- - -14, base
1- - -15, console (Artificial intelligence temperature controller, data acquisition system AWS, computer)
FIG. 2: the universal joint distribution diagram is fixed on the cross beam, and the upper connecting cross beam is connected with the upper pull rod.
2- - -1. joint
2- - -2, the dowel
2- - -3, pull rod
2- - -4, the dowel
FIG. 3: the load cell distribution graph is fixed on the base and connected with the lower pull rod and the data acquisition system.
3- - -1 lower pull rod
3-2 force-measuring sensor
3- - -3, fixed plate
FIG. 4: drawing rod assembly schematic diagram for comprehensive performance test
4- - -1, upper pull rod
4- - -2, upper clamping head
4- - -3. inner extension rod
4- - -4 sample
4- - -5 lower chuck
4- - -6 bolt
4- - -7 external extension rod
4- - -8 lower pull rod
4- - -9, fine adjustment nut
4- - -10 fixed bolt
4-11 displacement sensor
FIG. 5: drawing of extension rod
5- - -1, round chuck a
5- - -2, round chuck assembly drawing b
5- - -3. circular chuck c
5- - -4, upper plate-shaped chuck a1
5- - -5, plate-shaped chuck combination drawing b1
5- - -6, upper plate-shaped chuck c1
5-7 lower round chuck
5-8 lower plate clamp head
5- - -9 bolt
5- - -10 internal extension rod
5- - -11 external extension rod
5-12 fine adjustment nut
5-13 displacement sensor
5- - -14 fixed bolt
FIG. 6: heating furnace and furnace frame
6- - -1, furnace shell
6- - -2, buckle
6- - -3, handle
6- - -4, axle
6- - -5, journal stirrup
6- - -6, bottom plate
FIG. 6-1, guide rail holder
6-1-1, guide rail
6-1-2, support plate
FIG. 7: clamp apparatus
7- - -1, plate-shaped test specimen
7- - -2 circular sample
Figure 8 joint
The specific implementation mode is as follows:
1-A and 1-B, the multi-head tensile testing machine is composed of a beam 1-1, a universal joint 1-2, a pull rod 1-3, a heating furnace 1-4, a heating body 1-5, a sample 1-6, a pull rod 1-7, a furnace frame 1-8, a guide rail support 1-9, a stretching rod 1-10, a displacement sensor 1-11, a joint 1-12, a force transducer 1-13, a base 1-14, an operation console 1-15 (an artificial intelligent temperature controller, a data acquisition system AWS and a computer) 1-15 and a servo driving system of the testing machine.
Three universal joints are fixed at the center positions of the cross beam of the testing machine at intervals of 120 degrees and radius of 25mm at the center positions of 1-A and 1-B, and the universal joints are processed by high-strength alloy. Similarly, three load cells 1-14 in fig. 1 are fixed on the test bed, and fig. 3 corresponds to the universal joint, so that three sets of stretching devices are formed, namely:
universal joint figure 2+ tie rod figure 7+ sample + tie rod figure 7+ load cell figure 3. The universal joint is processed by structural steel below 500 ℃ and high-temperature alloy above 500 ℃. The transmission system completes the up-and-down movement of the beam by a servo mechanism of the host machine and drives the sample to deform.
The heating furnace is a key device of the test, the heating furnace is fixed on a furnace frame guide rail and can move back and forth, the size is determined by a selected host, the shell of the heating furnace is processed by a stainless steel plate, the thickness is 0.5-1.0 mm, the heat-insulating layer is made of light refractory bricks, the furnace tube is made of a high-alumina tube, the heating body is made of iron-chromium-aluminum wires, the diameter is 1.0mm, a direct radiation type heating mode is adopted, the sensitivity is high, the temperature range is 1400 ℃ at 100 plus, the constant temperature region is 300mm, three thermocouples are inserted into the upper, middle and lower temperature changes of the monitoring constant temperature region in the furnace from ①②③ three holes in the pictures 1-A and 1-B, the temperature changes are input into an artificial intelligent temperature controller to be adjusted to achieve the temperature control precision, the temperature is less than or equal to 0.5 ℃, the final printing.
In the micro deformation test, an extension rod (1-12) is arranged on the sample gauge length and extends out of the furnace by about 200 mm. And a displacement sensor is arranged at the tail end of the extension rod and connected with the AWS system, and a printing result is processed by a computer. The extension rod is processed by high-temperature alloy. The precision of the displacement sensor is less than or equal to one thousandth. And (4) carrying out a micro-deformation test, and fixing the extension rod with the chuck and the sample scale distance according to the shape of the sample. The circular samples were selected from the combinations of FIGS. 5a, b and c. Selection of plate-shaped test specimens from FIG. 5a1、b1、c1And (4) combining.
Claims (6)
1. The multi-head tensile testing machine is a novel device, belongs to a special device in the technical field of testing machines, and is characterized in that three sets of independent tensile devices share one heating furnace, as shown in figure 6, the multi-head tensile testing machine is shown in figure 1-A, 1-B, which is composed of a beam 1-1, a universal joint 1-2, an upper pull rod 1-3, a heating furnace 1-4, a heating body 1-5, a sample 1-6, a lower pull rod 1-7, a furnace frame 1-8, a guide rail frame 1-9, a stretching rod 1-B (1-10), a displacement sensor 1-B (1-11), a joint 1-12, a force measuring sensor 1-13, a base 1-14, and a console (an artificial intelligent controller, a data acquisition system AWS and a computer) 1-15.
2. The multi-head tensile testing machine according to claim 1, wherein: three universal joints are arranged in the center of a cross beam of the testing machine according to the radius of 120 degrees and the radius of 25mm, the universal joints are used for adjusting the sensitivity of the center and are connected with independent upper and lower pull rod figures 7, a force measuring sensor figure 3 is fixed on a base according to the radius of 120 degrees and the radius of 25mm like the universal joints and is in one-to-one correspondence with the universal joints to form three sets of stretching devices, the cross beam moves up and down and is driven by the servo of the testing machine, and the testing machine runs at.
3. The multi-head tensile testing machine according to claim 1, wherein: three stretching devices share one heating furnace, figure 6 shows that the stretching devices are subjected to split type direct radiation heating, the temperature range is 100-1400 ℃, the constant temperature area is 100-300mm, three thermocouples are fixed on the constant temperature area monitored in the furnace, the temperature is in the middle and lower range, and signals are transmitted to an artificial intelligent temperature controller for adjustment.
4. The multi-head tensile testing machine according to claim 1, wherein: when micro deformation is carried out, an extension rod is arranged on a sample gauge length, a figure 4 is extended out of a furnace and is connected with a displacement sensor, the extension rod selects a corresponding chuck to fix the sample gauge length according to the shape of the sample, a round sample is combined by figures 5a, b and c, a plate-shaped sample is combined by figures 5a 1, b1 and c1, when the sample is deformed by stress, a signal is output, the signal is input into a data acquisition system AWS through the extension rod and the displacement sensor, and a test report is printed by computer processing.
5. The multi-head tensile testing machine according to claim 1, wherein: three sets of stretching devices can once accomplish a set of experiment and replaced traditional once and can only do an experiment under the same tensile condition, have improved production efficiency, the cost is reduced, and a set of sample is in a constant temperature region together, and the influence factor is fixed, to improving the big benefit of experimental quality, and whole experiment does not use the asbestos rope to tie the thermocouple, and is pollution-free, the environmental protection.
6. The multi-head tensile testing machine according to claim 1, wherein: the heating furnace is fixed on the furnace frame guide rail and can move back and forth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910820986.XA CN111272572A (en) | 2019-11-04 | 2019-11-04 | Multi-head tensile testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910820986.XA CN111272572A (en) | 2019-11-04 | 2019-11-04 | Multi-head tensile testing machine |
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| Publication Number | Publication Date |
|---|---|
| CN111272572A true CN111272572A (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910820986.XA Pending CN111272572A (en) | 2019-11-04 | 2019-11-04 | Multi-head tensile testing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941945A (en) * | 2022-04-24 | 2022-08-26 | 燕山大学 | Variable volume furnace body testing machine |
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| WO2009139089A1 (en) * | 2008-05-14 | 2009-11-19 | 国際計測器株式会社 | Vibration testing system |
| CN102519803A (en) * | 2011-12-30 | 2012-06-27 | 华东理工大学 | Multi-head miniature test specimen creep experiment device and test method |
| CN202533335U (en) * | 2011-12-30 | 2012-11-14 | 华东理工大学 | Multi-head creep testing device for miniature samples |
| CN103175746A (en) * | 2011-12-26 | 2013-06-26 | 珠海市三思泰捷电气设备有限公司 | Multi-head electronic type high-temperature creep permanent strength testing machine |
| CN106769422A (en) * | 2017-03-15 | 2017-05-31 | 上海航空材料结构检测股份有限公司 | Circle distribution formula high flux long-time creep test machine |
| CN109163982A (en) * | 2018-09-06 | 2019-01-08 | 北京航星机器制造有限公司 | A kind of thermal environment bilateral loading equipment and test method |
-
2019
- 2019-11-04 CN CN201910820986.XA patent/CN111272572A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009139089A1 (en) * | 2008-05-14 | 2009-11-19 | 国際計測器株式会社 | Vibration testing system |
| CN103175746A (en) * | 2011-12-26 | 2013-06-26 | 珠海市三思泰捷电气设备有限公司 | Multi-head electronic type high-temperature creep permanent strength testing machine |
| CN102519803A (en) * | 2011-12-30 | 2012-06-27 | 华东理工大学 | Multi-head miniature test specimen creep experiment device and test method |
| CN202533335U (en) * | 2011-12-30 | 2012-11-14 | 华东理工大学 | Multi-head creep testing device for miniature samples |
| CN106769422A (en) * | 2017-03-15 | 2017-05-31 | 上海航空材料结构检测股份有限公司 | Circle distribution formula high flux long-time creep test machine |
| CN109163982A (en) * | 2018-09-06 | 2019-01-08 | 北京航星机器制造有限公司 | A kind of thermal environment bilateral loading equipment and test method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941945A (en) * | 2022-04-24 | 2022-08-26 | 燕山大学 | Variable volume furnace body testing machine |
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Application publication date: 20200612 |