Product Introduction.
The convective heat resistance test device is developed according to EN367 and ISO9151 test standards, and meets the requirements of the domestic AQ 6103-2007 convective heat resistance test standard for welders' protective gloves. The test result is the thermal protection index (HTI), and the test principle is to measure the test time required for the temperature of the back of the specimen to rise by 12 degrees or 24 degrees through the flame impact acting on the bottom of the sample, and the average value of the three tests is recorded as the thermal protection index (HTI), which is used to evaluate the thermal protection performance of the protective clothing fabric.
Convective heat resistance test device is an experimental equipment used to test the heat resistance of products, usually using convection heating to heat the product, and control the heating temperature and time and other parameters to simulate the temperature environment that the product may encounter in actual use.
The device usually consists of the following parts:
Heater: The heater is the core part of the unit and is used to generate heat and heat the product. Heaters are usually heated by electric heating elements or gas burners, which can adjust parameters such as heating temperature and heating rate.
Temperature control system: The temperature control system is used to control the temperature of the heater and the temperature of the product to ensure the stability and reproducibility of the experimental conditions. Temperature control systems typically use devices such as sensors and controllers to monitor and adjust the experimental temperature in real time.
Time control system: The time control system is used to control the time and sequence of the experiment to ensure that the experiment is carried out according to the preset program. Time control systems usually use devices such as timers and program controllers to provide precise control of the experimental time.
Support structure: The support structure is used to fix the product and other parts of the experimental device to ensure the stability and safety of the experiment. Support structures are usually made of metallic or non-metallic materials and are able to withstand conditions such as high temperatures and pressures during experiments.
When using this device for experiments, it is necessary to place the tested product on the support structure, and set the heating temperature, heating rate, experimental time and other parameters according to the experimental requirements. Then the experimental program is started, the heater starts to heat up, and the experimental process is monitored and controlled by the temperature control system and the time control system. After the experiment, the product can be tested and evaluated to determine its heat resistance.
It should be noted that since the device involves high temperature and experimental operation, it is necessary to follow the safety operation procedures and ensure that the device is well grounded to prevent the occurrence of safety accidents such as electric shock and fire. At the same time, in order to obtain accurate experimental results, the device needs to be calibrated and maintained regularly.
Advantages of convective heat resistance test device.
Powerful: It can provide a high-temperature environment, usually reaching a temperature of more than 1000 meters, to meet the needs of heat resistance testing of various materials.
Precise temperature control: The advanced temperature control system can achieve high-precision temperature control to ensure the stability and accuracy of the experimental temperature.
Convection heating: heat is generated through the heating element, and the heat is transferred to the specimen by convection to simulate the thermal environment in actual use.
Flow performance test: The flow performance of the sample can be tested, such as the measurement and analysis of viscosity, flow rate and other parameters.
Wide application: The device is widely used in aerospace, automotive, electronics and other fields to test the stability, reliability and safety of materials in high-temperature environments.
Automatic control: The software is automatically controlled, such as the thermal radiation flux of the burner, the thermal radiation flame impact at the bottom of the sample, the temperature rise change at the back of the sample, the air-cooled cooling device, etc., which improves the automation degree of the test.