What is a low temperature embrittlement testing machine?
The low temperature embrittlement testing machine is a professional equipment used to test the brittleness properties of materials in low temperature environments. It is widely used in plastics, rubber, metal, composite materials and other industries to help evaluate the impact resistance and embrittlement characteristics of materials under extreme low temperature conditions. The following is a detailed introduction to the low temperature embrittlement testing machine.
1. Working principle of low temperature embrittlement testing machine
The low-temperature embrittlement testing machine simulates the performance of materials under cold conditions by placing the sample in a low-temperature environment. During the test, the sample will be cooled to a set temperature, and its embrittlement degree will be tested by impact or bending. The equipment usually consists of refrigeration system, temperature control system, sample fixture and impact device.
| components | Function description |
|---|---|
| Refrigeration system | Provide a low-temperature environment, usually using liquid nitrogen or mechanical refrigeration |
| temperature control system | Precisely control the test temperature, usually ranging from -70℃ to room temperature |
| Specimen fixture | Fix the specimen to ensure stable position during testing |
| impact device | Apply impact force to the sample to test its brittleness |
2. Application fields of low temperature embrittlement testing machine
Low temperature embrittlement testing machines play an important role in multiple industries. The following are its main application areas:
| Industry | Application scenarios |
|---|---|
| Plastic industry | Test the impact resistance of plastic products at low temperatures |
| Rubber industry | Evaluate elastic changes in rubber materials in cold environments |
| Metal industry | Study the low-temperature brittle fracture behavior of metallic materials |
| composite materials | Analyze performance stability of composite materials at extreme temperatures |
3. Technical parameters of low temperature embrittlement testing machine
Different models of low-temperature embrittlement testing machines have different technical parameters. The following are typical parameters of common equipment:
| Parameter name | Parameter range |
|---|---|
| temperature range | -70℃ to room temperature |
| temperature fluctuation | ±1℃ |
| cooling rate | 1℃/min to 5℃/min |
| Sample size | Customized according to standards, the common length is 80mm×width 10mm×thickness 4mm |
| impact energy | 1J to 50J adjustable |
4. Test standards for low temperature embrittlement testing machine
Low temperature embrittlement test needs to comply with relevant international or national standards. The following are common test standards:
| Standard number | Standard name |
|---|---|
| ASTM D746 | Test methods for low temperature embrittlement of plastics and elastomers |
| ISO 974 | Determination of the impact embrittlement temperature of plastics at low temperatures |
| GB/T 5470 | Test method for impact embrittlement temperature of plastics |
| JIS K7216 | Test method for low temperature embrittlement of plastics |
5. Key points for purchasing a low-temperature embrittlement testing machine
When purchasing a low temperature embrittlement testing machine, you need to consider the following key factors:
1.temperature range: Select the appropriate temperature range according to the testing requirements to ensure that the minimum temperature requirements for material testing can be met.
2.Temperature control accuracy: High-precision temperature control system can provide more reliable test results.
3.Sample size: Make sure the equipment is compatible with the specimen size required for testing.
4.Test standards: Choose equipment that complies with relevant industry standards to ensure the authoritativeness of test results.
5.After-sales service: Consider the supplier’s technical support and after-sales service capabilities.
6. Maintenance of low temperature embrittlement testing machine
In order to ensure the long-term stable operation of the low temperature embrittlement testing machine, regular maintenance is required:
1. Check the refrigeration system regularly to ensure sufficient refrigerant.
2. Clean the inside of the device to prevent dust accumulation from affecting performance.
3. Calibrate the temperature sensor to ensure temperature measurement accuracy.
4. Check electrical connections to ensure safe operation of the equipment.
5. Regularly replace wearing parts, such as sealing rings.
7. Development Trend of Low Temperature Embrittlement Testing Machine
With the advancement of materials science, low temperature embrittlement testing machines are also constantly developing:
1.Intelligent: More and more equipment are equipped with intelligent control systems to realize automated testing.
2.Multifunctional: New equipment often integrates a variety of test functions to improve usage efficiency.
3.Environmental protection: Adopt more environmentally friendly refrigeration technology to reduce the impact on the environment.
4.High precision: Continuously improve temperature control and measurement accuracy to meet higher testing needs.
5.data visualization: Equipped with a more complete data collection and analysis system to facilitate result analysis.
Through the above introduction, I believe you have a comprehensive understanding of low temperature embrittlement testing machines. This kind of equipment plays an irreplaceable role in materials research and development and quality control. Choosing the right equipment and using it correctly will help improve the efficiency and accuracy of material performance research.
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