Method and Selection of Environmental Test Chamber

With the development of science and technology, the test equipment has developed to the stage of intelligence, virtualization, networking, and miniaturization, and has the characteristics of high precision and high efficiency, and will continue to develop along with this trend. This blog will briefly describe the method and equipment selection of routine environmental test equipment chambers for components according to various environmental conditions and testing equipment.

Light resistance and aging test

The high low-temperature test chamber applies to the performance and reliability test of automotive non-metallic materials, interior and exterior trim parts, and electronic and electrical products. It has a large control range of temperature.

In the application of equipment, select the temperature and humidity controllable range that meets the "basic environmental test procedures for electrical and electronic products", to carry out the environmental tests such as high temperature, low temperature, and damp heat alternating of electronic products or materials.

For the high-temperature and thermal aging tests of various plastics, rubber, and other non-metallic materials, body accessories, and electrical and electronic products, the high low-temperature test chamber is selected, which belongs to the climate simulation box.

Through the test, we can understand the high-temperature resistance of automobile parts, such as the thermal aging performance of rubber and plastic parts on the automobile, the heat resistance performance of body accessories and electronic products, and test the parameters and performance of automobile interior and exterior decoration materials and electrical parts after the temperature environment changes in the high temperature and constant temperature test. It is an important part of the quality control of automobile parts.

Dust test

The sand and dust test is used to test the dust resistance of parts. By simulating the natural wind and sand climate, the destructiveness of parts to automotive electrical parts is tested. Refer to the box size, temperature controllable range, humidity requirements, dust concentration, differential pressure, and other parameters to select the appropriate sand and dust test box.

Salt spray (cyclic) corrosion test

Testing the corrosion resistance of automotive metal and non-metallic materials can be divided into neutral salt spray test, copper accelerated acetic acid salt spray test, and cyclic corrosion test. As an accelerated corrosion test method to evaluate the anti-corrosion performance of steel protective coating, the neutral salt spray test has been widely used as a test method to evaluate the corrosion resistance of automobile parts at this stage.

Because it is impossible to simulate the dry state conditions and the state of dry wet alternation in the atmospheric natural environment, and it is impossible to truly simulate the corrosion in the outdoor natural state, the failure state of actual automobile parts in the process of use is often different from the results of neutral salt spray test.

Copper accelerated acetic acid salt spray test is an accelerated corrosion test method for evaluating Decorative Electrodeposited coatings such as "copper + nickel + chromium". The cyclic corrosion test is more close to the corrosion condition in the outdoor natural state, and the assessment is more accurate. The main influencing factors include corrosive medium, spray, wet heat cycle, and drying cycle. Through different combinations and cycles, the different corrosion processes of automobile parts in the atmospheric environment are simulated. Before the test, the coated auto parts shall be marked and stone blasted.

The advantage of using a salt corrosion test chamber is that the sample can be exposed to a series of different salt spray corrosion conditions by using repeated cycles to test the corrosion resistance of automotive metal materials.

Searching for environmental test chamber manufacturers from China, you can get high-quality products at a nice price.