Date：2021-10-28 16:33:00

We should know that X-ray has strong penetration. It is a kind of ray that cannot be seen by human eyes but can penetrate objects. This penetration can penetrate many substances that are opaque to visible light, such as ink, paper, wood, electronic equipment, etc. It produces different absorption or scattering characteristics of rays according to the different composition, density and thickness of the inspected workpiece, so as to obtain the judgment of the quality, size and characteristics of the inspected workpiece. The following contents are sorted out by the core detection network for your reference. View >>

Date：2021-10-28 15:36:00

What is X-ray testing? X-ray testing is an experimental technology that uses X-ray technology to observe, study and inspect the microstructure, chemical composition, surface or internal structural defects of materials. Such as X-ray powder diffraction, X-ray fluorescence spectrometry, X-ray photography, X-ray topography, etc. X-ray has been widely used in radiology as one of the five conventional detection methods in industry. This paper collects and arranges some X-ray data, hoping that this paper can have great reference value to all readers. View >>

Date：2021-10-27 18:05:49

In the formal industrial production, there are special component screening and testing workshops, equipped with many general and special screening and testing equipment and instruments, but for amateurs, these conditions cannot be met. Even so, they must not give up the screening and testing of components, because many electronic enthusiasts use mail orders, including authentic products, There are also defective products, most of which are surplus or profit products. For example, they are not screened and tested before installation. Once welded into the printed circuit board, it is found that the circuit can not work normally, and then check it. It will not only waste a lot of time and energy, but also easily damage the components and printed circuit board. This paper has collected and sorted out some materials, and I hope this paper can be of great reference value to all readers. View >>

Date：2021-10-26 17:46:00

Failure analysis is a new developing subject, which has been popularized from military industry to ordinary enterprises in recent years. It is generally based on the failure mode and phenomenon, through analysis and verification, simulate and reproduce the failure phenomenon, find out the cause of failure, and dig out the failure mechanism. It has strong practical significance in improving product quality, technology development and improvement, product repair and arbitration of failure accidents. The methods are divided into destructive analysis, nondestructive analysis, physical analysis, chemical analysis and so on. View >>

Date：2021-10-25 16:14:00

The damage probability of circuit board components is as follows: electrolytic capacitor, power module, high-power transistor, zener diode, resistance less than 100 Ω, resistance greater than 100k Ω, relay and porcelain chip small capacitance. Electronic components are divided into two categories: components and devices. The quality of the test is generally measured with a multimeter, and the components are mainly checked according to their own characteristics. In the maintenance process, use a multimeter to detect the quality of electronic components according to the fault conditions. If the measurement method is incorrect, it is likely to lead to misjudgment, which will cause difficulties to the maintenance work and even unnecessary economic losses. View >>

Date：2021-10-25 16:08:00

The test to evaluate and analyze the reliability of electronic products is called reliability test. For different products, in order to achieve different purposes, different reliability test methods can be selected. Reliability test is also called product reliability. It refers to the ability of a product to complete specified functions under specified conditions and within specified time. In the process of design and application, the product is constantly affected by its own and external climate environment and mechanical environment, but still needs to work normally. Therefore, it needs to be verified with test equipment. This verification is basically divided into three parts: R & D test, trial production test and mass production sampling inspection. View >>

Date：2021-10-22 16:39:00

Electronic components are the most basic components of products, and their quality level will have a vital impact on the stability and reliability of the whole system. Screening of electronic components is to conduct a full batch non-destructive test on the whole batch of electronic components through a series of short-term environmental stress accelerated tests and testing technologies, select qualified components with characteristics or determine whether the batch of products are accepted, so as to improve the service reliability of products. View >>

Date：2021-10-22 16:12:00

With the rapid development of science and technology and industrial production, people have higher and higher requirements for the quality of mechanical parts. Although the quality of materials and the precision of parts have been greatly improved, the early failure of mechanical parts used in various industries still occurs from time to time. Through failure analysis, it is essential to find out the failure causes and put forward effective improvement measures to prevent the recurrence of similar failure accidents, so as to ensure the safe operation of the project. Failure analysis is an independent discipline. It was first applied in military industry. With the continuous improvement of this discipline, its application scope is also expanding. View >>

Date：2021-10-22 15:28:00

For beginners of electronic technology, mastering the basic circuit principle, the functional characteristics and detection of components, and how to analyze the schematic diagram are all basic skills that need to be mastered. Here's how to identify the components on the circuit board? Circuit boards often need maintenance. What are the rules for the maintenance of industrial PCB circuit boards? The components on the circuit board should not only be known, but also the vulnerable parts on the circuit board during maintenance. View >>

Date：2021-10-22 14:35:00

Fracture refers to the phenomenon that metal or alloy materials or mechanical products are divided into several parts under the action of force. It is a dynamic change process, including crack initiation and propagation. Fracture failure refers to the failure of mechanical equipment products caused by the fracture of mechanical components to complete the functions required by the original design. Fracture failure types are as follows: View >>