Date：2022-07-28 14:30:00

Because fatigue fracture usually occurs from the weakest part of the machine or the stress concentration caused by external defects, fatigue fracture is very sensitive to many factors, such as cyclic stress characteristics, environmental media, temperature, surface state of the machine, internal structural defects, etc., which lead to the generation of fatigue cracks or rapid crack growth and reduce the fatigue life. In order to improve the fatigue resistance of machine parts and prevent the occurrence of fatigue fracture accidents, reasonable structural shapes should be selected during the design and processing of machine parts to prevent surface damage and stress concentration. There are many factors that affect the fatigue strength of metal materials. Here are some common factors that affect the fatigue strength. View >>

Date：2022-07-27 16:53:19

As one of the five conventional inspection methods in radiology, X-ray transmission inspection can provide photos of whether there are defects and relevant dimensions in the inspection parts of castings. In industrial applications, X-ray is often used for defect detection of auto parts manufacturing, internal defect detection of aluminum alloy castings, quality screening of magnesium alloy castings, automobile hub detection, subframe detection, hinge quality detection, etc., to ensure that the tested industrial products have high strength; At the same time, in the field of weld detection, we often use X-ray to carry out cylinder weld detection, pipe weld detection, boiler weld detection, aerospace parts weld detection, etc. View >>

Date：2022-07-27 16:53:06

The industrial CT detection system is composed of X-ray source, imaging receiver, high-precision turntable, image processing system, CT software system, etc. In recent years, industrial CT is known as the trend of measurement technology in the future with its powerful detection technology and gradually wide range of applications. View >>

Date：2022-07-26 15:59:27

Salt spray test is an environmental test that uses salt spray test equipment to evaluate the corrosion resistance of products or metal materials. It is divided into two categories, one is natural environmental exposure test, and the other is artificial accelerated simulated salt spray environment test. Among them, the artificial simulated salt spray environment test is to use the salt spray test chamber and use the artificial method to create the salt spray environment in its volume space to assess the quality of salt spray corrosion resistance of products. The salt concentration of chloride in salt fog environment is several times or dozens of times of that in natural environment, which greatly improves the corrosion rate. View >>

Date：2022-07-26 15:57:19

Salt spray test is a clear and specific regulation of salt spray test conditions, such as temperature, humidity, sodium chloride solution concentration and pH value. In addition, it also puts forward technical requirements for the performance of salt spray test chamber. The purpose of salt spray test is to assess the salt spray corrosion resistance quality of products or metal materials, and the judgment of salt spray test results is the judgment of product quality. Whether its judgment results are correct and reasonable is the key to correctly measure the salt spray corrosion resistance quality of products or metals. View >>

Date：2022-07-26 15:12:24

Pin, also known as pin, is called pin in English. It refers to the wiring from the internal circuit of the integrated circuit (chip) to the peripheral circuit, and all pins constitute the interface of this chip. A section at the end of the lead is soldered together with the pad on the printed board to form a solder joint. Pins can be divided into heel, toe, side and other parts. Then, how to detect and distinguish IC chip oxidation? The following is a brief analysis of chip pin oxidation and treatment for your reference. View >>

Date：2022-07-25 16:14:05

In the process of circuit board welding, it is easy to have poor welding conditions such as false welding and false welding. False welding and false welding will seriously affect the reliability of products and greatly improve the maintenance cost of products. Then, what are the reasons for false soldering and false soldering? How to improve the faulty soldering of electronic parts? In order to help you understand in depth, the following contents are sorted out by Chuangxin testing network for your reference. View >>

Date：2022-07-25 16:08:44

The shape of the chip capacitor is similar to that of the chip resistor. Usually, the chip capacitor is a white substrate, and most of the tantalum electrolytic capacitors are black substrates, but the positive side is also marked with white polarity. Chip capacitor is one of the common electronic components on PCB. Although the size of chip capacitor is very small, it seems to have no effect, but it is not. The existence of chip capacitor has its certain application and function. Then, will the chip capacitor fail? What are the main failure causes of chip capacitor damage? This article has collected and sorted out some materials, which are expected to be of great reference value to readers. View >>

Date：2022-07-25 16:06:11

According to the differences of frequency point, frequency difference, load, active and passive, packaging, size and other parameters, the crystal oscillator is prone to frequency offset during operation, resulting in no vibration, resulting in the failure of electronic products to work normally. The following content helps you analyze the reason why the crystal oscillator does not vibrate, which is collated by the core detection network for your reference. View >>

Date：2022-07-22 15:06:11

Generally, the test to evaluate and analyze the reliability of electronic products is called reliability test. The test results provide a basis for fault analysis, study of corrective measures taken, and judgment of whether the product meets the index requirements. According to the method and purpose of reliability statistical test, reliability statistical test can be divided into reliability verification test and reliability measurement test. View >>