"The same size, the same temperature, why the high-low temperature impact test box and the high and low temperature test box price difference is so big" is often the customer to ask such a question, below we discuss this issue.
The high-low temperature impact test box is generally applicable to the destructive nature of military products, and the test process is instantaneous. The test piece of the high-low temperature impact test box is placed in a sample area, and the test box is divided into upper and lower two boxes (high temperature zone, low temperature zone) or upper and middle three boxes (high temperature zone, sample zone, low temperature zone). Yes, for example, the low temperature zone -60 degrees, high temperature zone 150 degrees, the sample all of a sudden change from high temperature to low temperature, the conversion time is less than or equal to 15s, the temperature recovery time is less than or equal to 5min, the test of the product is very large.
Most high and low temperature test chambers are suitable for civilian products, and the testing process is gradual. There is only one test space in the high and low temperature test chamber. Place the test workpiece directly in the normal temperature zone, follow the procedures required by the instrument, and gradually increase or decrease the temperature (heating rate: 1.0 to 3.0°C/min, cooling rate 0.7 to 1.0°C/min. ) The temperature progress is relatively gradual. This is the main difference between the two experimental methods.
In addition, the refrigeration system, control system, design principle, cabinet structure, and cost of the two test chambers are all quite different. When you choose, you must clearly select the reference standards, test methods, and test conditions to achieve.
