Brief Introduction of Cold and Thermal Shock Test Chamber

When it comes to the cold and thermal shock test chamber, many people may not know it, so today I'll give you a brief introduction.

The operation flow of the cold and thermal shock test chamber

Generally speaking, the operation of a cold and thermal shock test chamber is divided into five parts: pretreatment, initial detection, test, recovery, and final detection.

• The test sample shall be placed in the cold and thermal shock test chamber according to the standard requirements, and the temperature in the test chamber shall be raised to the specified point for a certain time until the test sample reaches the temperature stability, whichever is longer.

• After the high-temperature stage, the test sample shall be transferred to the low-temperature test chamber that has been adjusted to - 55 ℃ within 5min and maintained for 1H or until the test sample reaches stable temperature, whichever is the length of time.

• After the low-temperature stage, the test sample shall be transferred to the high-temperature test chamber that has been adjusted to 70 ℃ within 5min and maintained for 1hor until the test sample reaches a stable temperature, whichever is the length of time.

• Repeat the above experimental method to complete three cycles. According to the sample size and space size, there may be a slight error in time.

Application fields of the cold and thermal shock test chamber

The cold and thermal shock test chamber is used to test the physical changes of electronic and electrical components, automatic parts, communication components, auto parts, metals, chemical materials, plastics and other industries, national defense industry, aerospace, military industry, BGA, PCB base plate, electronic chip IC, semiconductor ceramic and polymer materials, and to test the repeated tensile force of materials to high and low temperatures and the chemical changes or physical damage produced by thermal expansion and cold contraction of products. 

It can confirm the quality of products, from Precision IC to heavy machinery components. It is an indispensable test box for product testing in various fields.

Maintenance method of the cold and thermal shock test chamber

• The radiator (condenser) of the refrigeration unit of the cold and thermal shock test chamber shall be maintained regularly and kept clean. The dust sticky condenser will cause the high-pressure switch of the compressor to trip and give a false alarm. The condenser should be maintained regularly every month. Use a vacuum cleaner to absorb the dust attached to the condenser heat dissipation net, or use a hard brush or blow the dust with a high-pressure air nozzle after starting up.

• When opening and closing the door or taking the test object from the furnace, do not let the object contact the rubber edge on the door, to prevent the rubber edge from being damaged and shortening the service life.

• The ground around and at the bottom of the fuselage shall be kept clean at any time to avoid accidents and performance degradation caused by a large amount of dust inhalation into the unit.

• The refrigeration system of the cold and thermal shock test chamber is the core of the machine. Please inspect all-copper pipes once a half year to see if there is any leakage of snow. If there is oil leakage at each horn joint and welding joint, please inform the company or deal with it directly.