Date：2021-11-04 17:45:51

With the rapid progress of industry and society, China's manufacturing industry has developed rapidly in science and technology and occupied a leading position. In metal software, the detection technology of surface scratch has attracted much attention. Surface scratch detection technology was developed in the 1950s. It mainly adopts manual visual detection, and the inspector can directly observe the defects with the naked eye. The traditional surface scratch detection technology has many disadvantages; For example, the manual detection accuracy is low and workers are prone to fatigue. The manual detection needs to work in the environment of high temperature, noise, dust and vibration, which has caused great harm to the body and psychology. With the development trend of industry 4.0 and the application of artificial intelligence visual inspection technology in various industries, more and more production-oriented enterprises use machine vision inspection equipment to control the quality of their products. View >>

Date：2021-11-04 17:22:00

Constant temperature and humidity test is an environmental reliability test for products. That is, simulate the temperature and humidity environment of product storage and operation, and check whether the impact of the product after a period of time in this environment is within the acceptable range. Constant temperature and humidity are generally high temperature and high humidity. With the increasingly strict requirements for quality control, the demand for constant temperature and humidity environment is increasing, and the application field is becoming wider and wider. Constant temperature and humidity test can simulate high temperature, low temperature and damp heat environment, and carry out temperature and humidity test under specific environment. Constant temperature and humidity test can ensure that the tested products are under the same temperature and humidity environmental conditions. View >>

Date：2021-11-03 17:26:00

Dust proof test is used to detect the test of electrical and electronic products, automobile and motorcycle parts and seals to prevent sand dust from entering the seals and shell in the sand dust environment, and to determine the impact of suspended sand dust in the air on the products. To test the performance of electronic and electrical products, automobile and motorcycle parts and seals in the use, storage and transportation of sand and dust environment. View >>

Date：2021-11-03 16:52:00

The 100 grid test is used to draw a grid with a certain specification and size evenly, and evaluate the adhesion of the coating film to the substrate by evaluating the integrity of the coating film in the grid, which is expressed as "grade". It is mainly used to determine the adhesion of organic coatings by cross cutting method. It can be used not only in the laboratory, but also in the construction site under various conditions. Generally speaking, it is a tool for testing the adhesion of the test object after coating. According to the Japanese industrial standard (JIS), it is divided into 1 ~ 5 levels. The higher the level, the stricter the requirements. When the customer specification requires level 5, it means that there can be no falling off at all. View >>

Date：2021-11-03 16:23:00

Hast highly accelerated temperature and humidity pressure test (HAST) is a highly accelerated, temperature and humidity based reliability test method for electronic components. Environmental parameters, hast is also known as pressure test (PCT) or unsaturated pressure test (uspct). The purpose is to evaluate the test sample by increasing the water vapor pressure in the laboratory to a certain moisture resistance. Much higher than the partial water vapor pressure inside the sample. This process temporarily accelerates the infiltration of water into the sample. View >>

Date：2021-11-03 16:11:00

With the improvement of semiconductor reliability, most semiconductor devices can withstand long-term THB test without failure. Therefore, the test time used to determine the quality of finished products has increased a lot. Principle: under the harsh environment of high temperature, high humidity and bias pressure, the sample accelerates the moisture to pass through the external protective layer, or along the interface between metal and external protective layer, resulting in the failure of the sample. View >>

Date：2021-11-03 14:56:50

Acetone (CH3COCH3), also known as dimethyl ketone, is the simplest saturated ketone. It is a colorless transparent liquid with a special pungent smell. Soluble in water, methanol, ethanol, ether, chloroform, pyridine and other organic solvents. It is inflammable and volatile, with active chemical properties. Acetone is an important raw material for organic synthesis, which is used to produce epoxy resin, polycarbonate, plexiglass, medicine, pesticide, etc. It is also a good solvent for coatings, adhesives, cylinder acetylene, etc. It is also used as diluent, cleaning agent and extractant. It is also an important raw material for manufacturing acetic anhydride, diacetone alcohol, chloroform, iodoform, epoxy resin, polyisoprene rubber, methyl methacrylate, etc. It is used as a solvent in smokeless gunpowder, celluloid, acetate fiber, painting and other industries. View >>

Date：2021-11-02 17:11:10

Eye diagram test is a test used to test the quality of signal. The eye diagram of digital signal contains rich information, which can reflect the overall characteristics of digital signal and evaluate the quality of digital signal. Therefore, the analysis of eye diagram is one of the keys of signal integrity analysis of digital system. View >>

Date：2021-11-02 16:19:32

For the nominal noise in electronic circuits, it can be generally considered that it is a general term for all signals except the destination signal. At first, people called the electronic signals that caused the noise emitted by audio equipment such as radios noise. However, the consequences of some non purposeful electronic signals on electronic circuits are not all related to sound. Therefore, people gradually expanded the concept of noise. For example, those electronic signals that cause day shift stripes on the video screen are also called noise. It may be said that all signals in the circuit other than the target signal, whether it affects the circuit or not, can be called noise. View >>

Date：2021-11-02 15:15:48

Temperature rise test is a routine test item in the type test of electrical products. The purpose of temperature rise test is to test the temperature change of electrical products and components, so as to determine whether the electrical products or components meet the requirements of the standard. With the rapid development of electrical equipment, temperature rise test is becoming more and more important for the safety of electrical equipment and components. View >>