The purpose of aging test is to compare several aging test methods

Date：2022-08-17 18:24:30 Views：1520

Why does the product undergo aging test and what is its purpose? The test standard of aging test can be specified by the customer, and the aging test and inspection can be carried out according to the corresponding national standards without special requirements. The aging test is mainly a high-strength test that simulates various harsh conditions of the product in the actual use process, and reasonably predicts the service life of the product according to the use requirements.

The first reason for aging is to improve the reliability of products. So far, there is no other alternative method. For new products, the performance of new components or the whole machine shall be assessed, and the aging index shall be higher. Aging exposes the defects of products before delivery, such as the reliability of welding joints and various defects in design, material and process of products; Aging causes the product performance to enter a stable range and then leave the factory to reduce the repair rate.

Reliability test is an activity to evaluate the functional reliability of the product in all environments such as expected use, transportation or storage within the specified service life. Common reliability tests mainly include aging test, salt spray test, high and low temperature test and liquid resistance test. Put the product into the aging box for a period of time to see the changes of the product before and after aging. The most common aging tests are ultraviolet aging, xenon lamp aging, ozone aging and hot air aging.

The common products requiring aging test are mainly polymer products such as rubber, plastic and adhesive, as well as coatings, metals and other products.

UV aging vs xenon lamp aging

UV aging and xenon lamp aging are both tests that are simulated through an aging box that simulates sunlight. What's the difference between them? Let's explain briefly.

UV aging is simulated by sunlight or artificial light source, which mainly reflects the UV resistance of products. It is mainly aimed at non-metallic products. The UV aging box uses 8 UV fluorescent lamps with rated power of 40W as the light source.

The aging of xenon lamp is to use xenon arc lamp which can simulate the full sunlight spectrum to reproduce the destructive light waves in different environments. Compared with ultraviolet aging, it also simulates sunlight, but it reflects the word "full sunlight" more because it can produce ultraviolet, visible and infrared light. In a word, the xenon lamp aging box is to simulate the sunlight, while the ultraviolet aging box is more to imitate the destructive effect of the sunlight.

Ozone aging vs hot air aging

Ozone aging, as the name implies, is to see the ozone resistance of products. Hot air aging refers to the anti-aging ability of products in hot air environment.

In general, the aging test is mainly for non-metallic materials, such as rubber and plastics, which are usually subject to xenon lamp aging and hot air aging. Xenon lamp aging is generally required for coatings. UV aging may be required for some coatings used in coastal environment. Hot air aging is usually used for adhesive products.

Aging test time

The aging test time is generally specified according to the requirements in the product standard, but it does not mean that the aging time does not mean how many years the product can be used in this environment. There is no clear conversion formula. If there is no requirement in the product standard, then the test parties need to agree on the time.

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