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Name：Low temperature charpy pendulum impact tester for metal
Model：
Description：Computer controlled low temperature charpy pendulum impact tester for metal is used to measure the impact resistance of metal materials under dynamic load so as to judge the properties of the material under dynamic load. The absorbed energy of the sample is obtained by the way that the difference between the pre-position energy of the pendulum impact and the remaining position energy after the impact is displayed on the dial. The maximum impact energy is 500J, and a 250J pendulum is attached. The section of the sample used is (10×10)mm. This machine has a large impact energy and is suitable for ferrous metals with high impact toughness, such as steel and its alloys.
Low temperature charpy pendulum impact tester for metal Detailed information：
Computer low temperature charpy penludum impact tester
Computer controlled low temperature charpy pendulum impact tester for metal is used to measure the impact resistance of metal materials under dynamic load so as to judge the properties of the material under dynamic load. The absorbed energy of the sample is obtained by the way that the difference between the pre-position energy of the pendulum impact and the remaining position energy after the impact is displayed on the dial. The maximum impact energy is 500J, and a 250J pendulum is attached. The section of the sample used is (10×10)mm. low temperature pendulum impact tester for metal has a large impact energy and is suitable for ferrous metals with high impact toughness, such as steel and its alloys.
Computer controlled low temperature charpy pendulum impact tester for metal is an integrated low temperature test and impact tester. It is equipped with a dedicated sample feeding device to automatically send samples. The sample is centered using the method of end face positioning. After the sample is finished with the low temperature test, the time from the furnace to the impact does not exceed 4 seconds. Accuracy and work efficiency. The sample is cooled, thermostatted, temperature regulated, oscillating, hanging pendulum, sample feeding, positioning, and impact are all electrically controlled and automatically completed. After the sample is thrown, the residual energy is automatically thrown to prepare for the next impact test. Therefore, in the continuous low-temperature impact test laboratory and a large number of metallurgy, mechanical manufacturing plants and other departments to do low-temperature impact test can better reflect its superiority.
Computer controlled low temperature charpy pendulum impact testing machine for metal is equipped with a computer and a printer, with dual control dual display function. This machine adopts PLC automatic control and measurement, and performs calculations according to the reverse lift angle of the pendulum after the test sample is punched. It automatically displays the reverse lift angle β value and the absorbed power of the pendulum to the sample. Impact toughness ak value, and computer and special data processing and control software for data editing and generate test reports, can also store and print test data, the average power of the three tests, and test time and serial number and other content, but also to achieve data Remote transmission.
Impact body of low temperature charpy impact tester for metals is made of cast steel material, which makes it rigid during the entire test process. It has strong impact resistance and is not easily deformed. The test results are accurate and the service life is long. The use of high-torque clutches and high-power motors makes it more stable and vibration-free when the pendulum is placed and placed. The low-temperature part uses the cascade compressor refrigeration technology, using the principle of thermal balance and the circulation stirring method to achieve automatic uniform cooling, constant temperature and temperature regulation of the sample.
Computer controlled low temperature charpy pendulum impact tester for metal is developed and produced in accordance with the national standard GB/T 3808-2002 "Inspection of the pendulum impact tester". According to the national standard GB/T 229-2007 "The Charpy Pendulum Test Method for Metallic Materials", the impact test on metallic materials is carried out. Meet JJG 145-2007 "pendulum impact tester verification procedures." If you change the structure and replace the relevant parts, you can meet the requirements of the American Standard, European Standard ASTM E23, EN 10045, ISO 148, ISO 83 and other international relevant standards.
一、Main technical specifications of low temperature charpy impact tester for metals:
1.Impact energy: 500J 300J
2.Dial scale range and division value:
Energy range 0-500J 0-300J
3. Pendulum torque: 0-500J M=267.9492N.m
0-250J M=133.9746N.m
4. Pendulum pre-angle: 150°
5.Swivel axis rotation center to impact point (sample center) Distance: 800mm
6. Impact speed: 5.4m/s
7. Sample holder span: 40mm
8. Support jaw fillet: R（1.0～1.5）mm (1mm for special order)
9.Blade radius of curvature: R（2.0～2.5）mm (8mm for special order)
10. Specimen bearing support surface inclination:11°
11. Impact blade angle: 30°
12. Impact blade thickness: 16mm
13. Measuring angle range: 0-360°
14. Angle resolution: ≤0.06°
15. Specimen specification: 10×10（7.5或5）×55 mm
16. Sample box capacity: ten
17.Refrigeration method: Compressor refrigeration
18. Low temperature range: Room temperature～-60℃
19.Temperature control accuracy: Fluctuation ±0.5°C, gradient 2°C
20.Digital display timer: 1 minute - 9999 minutes, resolution 1 point
21. Cooling medium: Ethanol or other antifreeze
22. Feed speed: ≤4S
23.Host Dimensions (Length × Width × Height): （2230×1510×1480）mm
24. Host weight: 740Kg
25.Power supply： Three-phase four-wire system 380V 50Hz 2.9KW
26. Working conditions of low temperature charpy pendulum impact testing machine for metal:
1.Room temperature 20 °C ± 5 °C range;
2.Relative humidity is not more than 85%;
3.No corrosive medium around, no vibration, no strong electromagnetic interference in the environment;
4.Installed on a concrete foundation with a thickness of not less than 200mm or fixed on a foundation of more than 1400Kg;
5.The base level of the mounting base is adjusted to 2/1000.
二、Structure Introduction of low temperature charpy impact tester for metals:
The main components of low temperature pendulum impact tester for metal are:
Host, cryogenic equipment, feeding mechanism, positioning mechanism, electric control box, microcomputer and so on.
1. Host: It is composed of a fuselage, a transmission mechanism, a hanging-off mechanism, an indicating mechanism, a pendulum, and an automatic yaw signal device.
After pressing the “take the pendulum” button, the pendulum is lifted and the safety pin is extended. Press the "Automatic Feeding" button, the tester will realize: Sample delivery → Positioning → Clamping → Sample is in place, then press the “Retreat” button, and then press “Shock” to perform an impact test. After breaking the sample, the pendulum The automatic pendulum hangs and the insurance pin is automatically extended to prepare for the next impact test.
The function of the indicating mechanism is to display the absorbed work of the sample during the test, which consists of a dial, a pointer, and a dialing pin. The machine is controlled by a microcomputer and contains two sets of reading systems. The test results are displayed on the computer at the same time.
Pendulum is composed of pendulum, blade, pendulum, connector, plug, hook and other parts. To facilitate the user to replace the pendulum with different energy levels, a detacher is included.
2. Cryogenic device: mainly composed of two parts of the refrigeration system and the cryogenic tank.
After turning on the power supply and cooling switch, the high temperature compressor starts to work. When the low temperature compressor start condition is reached (about 5 minutes), the low temperature compressor will start automatically and the refrigeration system will enter the official cooling state. The refrigeration compressor works continuously. When the temperature in the tank approaches the set temperature, the heating device in the cooling tank begins to provide heat according to the PID adjustment method to balance the excess cooling produced by the refrigeration system so as to achieve the purpose of constant temperature. Stirring allows the medium in the cooling tank to circulate continuously so that the temperature in the tank is uniform.
3. Feeding mechanism:
After the sample is cooled to the desired temperature in a cryogenic apparatus, the mechanism can quickly deliver the sample to the jaw support surface. Adjust the position of the switch impact block to adjust the position and stroke length of the feed rod.
4. Positioning mechanism:
In the impact test, the sample must be close to the side of the jaw so that the notch of the sample is correctly centered on the axis of the pendulum. Only in this way can the accuracy of the test result be ensured. This machine uses the positioning mechanism to align the sample by means of positioning the end face.
5. Electrical Control System:
The electrical control system of the machine is a microprocessor control system independently developed by our company.
三、Main configurations of low temperature pendulum impact tester for metal:
1.500J host one
2.300J、500JPendulum one
3.Sample box one
4.Refrigeration temperature control device One set (installed on the host)
5.Automatic feeding device One set (installed on the host)
6.Take the pendulum transmission device One set (installed on the host)
7. Automatic hanging pendulum device One set (installed on the host)
8. Brand computer one
9.Brand Color Inkjet A4 Printer one
10.Dedicated data processing and control software one set
11.Span board one
12.Specimen centering device one
13.Remover One (for changing pendulum)
14.Anchor bolt four
15.Safety protection device one set
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