Definition and operation regulations of high and low temperature impact test chamber

The high and low temperature impact test chamber is divided into three-box type and two-box type according to test requirements and test standards. The difference lies in the test method and internal structure. The three-box type is divided into a cold storage room, a heat storage room and a test room, and the product is placed in the test room during the test. The two-box type is divided into a high-temperature room and a low-temperature room. The high and low temperature switching is realized by driving the movement of the basket by the motor. The product is placed in the basket and moves with the basket.

The thermal shock test chamber is a professional high and low temperature impact test chamber. It plays an irreplaceable role in testing LED, hardware, digital, batteries, resistors, chemicals and other products. At present, many industries rely on this type of thermal shock test chamber. , to test the performance of the product. The following are the operating regulations for the thermal shock test chamber.

1. The pressure rise rate of the domestic experimental electric furnace should not be greater than 1.33Pa/h, and the standard of some foreign enterprises is 0.67Pa/h.

2. The temperature shock test chamber is mainly impacted, and the workpiece should be kept at a distance in the chamber.

3. During the heating process, the workpiece and the materials in the furnace will be out of gas, causing the temperature to drop.

4. The temperature shock test chamber should have a quick cooling device. The pressure of cooling water should be greater than 0.2Mpa, and the flow should be adjustable.

5. Nitrogen should not be used as a cooling gas when treating titanium alloys in a thermal shock test chamber, because titanium and nitrogen react at high temperatures to form golden-yellow titanium nitride.

6. The movable connection parts of the thermal shock test chamber are all sealed with O-shaped rubber rings, and this part is cooled by water.

7. When the workpiece is quenched in a vacuum state, vacuum quenching oil should be used, which has a low saturated vapor pressure.

8. The maintenance of the thermal shock test chamber should be in the state of vacuum or pure nitrogen to avoid inhalation and moisture absorption when not in use.

9. Cooling gas: steel generally uses 99.995% nitrogen, high temperature alloys use 99.999% nitrogen or argon, and titanium alloys use 99.995% argon.