Small thermal shock test chamber

Small thermal shock test chamberIt is a testing equipment used in the metal, plastic, rubber, electronics and other material industries to test material structures or composite materials. It can withstand continuous environments of high and low temperatures in an instant, and can detect chemical changes or physical damage caused by thermal expansion and contraction of samples in a short period of time. The test methods that the cold and hot shock test chamber meets are: GB/T2423.1.2, GB/T10592-2008, GJB150.3 high and low temperature impact test.

Working principle of refrigeration
Both high and low refrigeration cycles use reverse Caryol cycles, which consist of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, consuming work to increase the exhaust temperature. Then, the refrigerant exchanges heat with the surrounding medium through the condenser at an isothermal state, transferring heat to the surrounding medium. After the refrigerant undergoes adiabatic expansion through the valve, the temperature of the refrigerant decreases. After Z, the refrigerant absorbs heat from objects with higher temperatures through the evaporator, causing the temperature of the cooled object to decrease. This cycle repeats itself to achieve the goal of cooling down.

Small thermal shock test chamberExecution and compliance with standards:
1. GB/T2423.1-2001 Low temperature test methods;
2、GB/T2423.2-2001；
3. GB/T2423.22-1989 Temperature change test N;
4. National GJB150.3-86;
5. National GJB150.4-86;
6. National GJB150.5-86;
7. GJB150.5-86 Temperature shock test;
8. GJB360.7-87 Temperature shock test;
9. GJB367.2-87 405 temperature shock test;
10. SJ/T10187-91Y73 series temperature change test box - one box type;
11. SJ/T10186-91Y73 series temperature change test box - two box type;
12. Meet the standard IEC68-2-14_test method N_temperature variation;
10. GB/T 2424.13-2002 Test Methods - Guidelines for Temperature Variation Test;
11. GB/T 2423.22-2002 Temperature variation;
12. QC/T17-92 General rules for weather resistance testing of automotive components;
13. Environmental Impact Assessment of Electrical Connectors and Sockets for EIA 364-32 Thermal Shock (Temperature Cycling) Test Procedure.

Technical Specifications:

1. Inner box size: 800 × 800 × 800mm (D × W × H)

2. Preheating temperature range for high temperature chamber: 45 ℃ -150 ℃;

Heating rate: within 10 minutes from 25 ℃ to 150 ℃;

3. Pre cooling temperature range of low-temperature chamber -70 ℃ -50 ℃;

Cooling rate: 25 ℃~-70 ℃ within 25 minutes;

Heating rate: -70 ℃~50 ℃ within 25 minutes

4. Temperature fluctuation: ≤± 0.5 ℃

5. Temperature deviation: ≤± 2.0 ℃

6. Temperature range for impact test: (20-150 ℃) - (-55 ℃ -20 ℃)

7. Recovery time of laboratory temperature: ≤ 5 minutes

8. Temperature conversion time: ≤ 10s

9. Impact mode: two or three boxes

10. Temperature shock test with high load: 50kg (made of aluminum or iron, without heating)

11. Equipment noise: ≤ 70dB

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