Date：2022-06-21 17:08:45

X-ray has been widely used in industry as one of the five conventional detection methods in radiology. X-ray was first used in medical treatment to ensure the safety of human health. With the development of industry, X-ray is most commonly used in industrial nondestructive testing. Now it is mainly divided into high-tech industries such as electronic semiconductors and lithium new energy, as well as branches such as pan industrial nondestructive testing, public safety and foreign matter detection. View >>

Date：2022-06-20 18:05:16

RoHS directive originated in the European Union, with the rise of the production and use of electrical and electronic products (also known as EEE). Hazardous substances (such as lead and cadmium) may be released during the use, treatment and disposal of environmental electrical equipment, resulting in serious environmental and health problems. RoHS helps prevent such problems. It limits the existence of specific hazardous substances in electrical products, and safer substitutes can replace these substances. View >>

Date：2022-06-20 18:02:08

Switching power supply chips can be divided into ac/dc power supply chips and dc/dc power supply chips. Dc/dc converters have been modularized, and the design technology and production process have been mature and standardized at home and abroad, and have been recognized by users. However, the modularization of ac/dc, due to its own characteristics, has encountered more complex technical and process manufacturing problems in the process of modularization. View >>

Date：2022-06-17 15:52:41

Nondestructive testing is the general term of all technical means to use the characteristics of sound, light, magnetism and electricity to detect whether there are defects or nonuniformity in the inspected object, give the size, location, nature and quantity of defects, and then determine the technical status of the inspected object (such as qualified or not, residual life, etc.) without damaging or affecting the service performance of the inspected object. View >>

Date：2022-06-17 15:45:15

In the elastic medium (such as solid, liquid and gas), the longitudinal wave excited by the wave source whose frequency is less than 20Hz is an infrasonic wave, 20~20000hz is an acoustic wave, and greater than 20000hz is an ultrasonic wave. Because ultrasonic wave can penetrate most materials, it can be used to detect the internal and surface defects of materials. It can also be used for thickness measurement and other purposes. View >>

Date：2022-06-16 15:41:20

There are many kinds of weld defects, which can be divided into internal defects and external defects according to their positions in the weld. External defects are located on the outer surface of the weld, which can be seen with the naked eye or a low magnification, for example, the weld size does not meet the requirements, undercut, overlap, crater, air hole, crack, slag inclusion, incomplete penetration, incomplete fusion, etc. Internal defects are located inside the weld. Such defects are found by destructive inspection or flaw detection methods, such as incomplete penetration, incomplete fusion, pores, cracks, slag inclusions, etc. View >>

Date：2022-06-16 15:37:52

Soldering iron welding, also known as manual welding, is the basic means of tin welding technology. Due to its simple and flexible operation and strong adaptability, it still continues to play a role and is constantly improving and developing today when automatic welding technology is widely used. Welding technology is one of the most critical technologies for the production of complete electronic products. The quality of welding can represent the level of assembly technology of enterprises to a certain extent. The following is a brief description of common manual welding errors for your reference. View >>

Date：2022-06-15 14:45:31

Manual welding is a basic operation skill in electronic product assembly. It is suitable for product trial production, small batch production of electronic products, debugging and maintenance of electronic products, and some occasions that are not suitable for automatic welding. It is a welding process that uses a soldering iron to heat the metal parts to be welded and tin lead solder, the molten solder moistens the heated metal surface to form an alloy, and connects the metal parts to be welded after the solder solidifies, so it is also called tin welding. Electronic products will be damaged by static electricity generated by themselves or people during welding, so anti-static measures shall be taken during welding. Manual welding is one of the important causes of electrostatic electrical overload EOS. In order to help you have a better understanding, the following contents are sorted out by the core detection network for your reference. View >>

Date：2022-06-15 14:40:55

RoHS stands for hazardous substance restriction. RoHS, also known as directive 2002/95/ec, originated in the European Union and restricts the use of certain hazardous materials found in electrical and electronic products (known as EEE). All applicable products on the EU market after july1,2006 must pass RoHS compliance. View >>

Date：2022-06-15 14:35:11

The quality defects existing in the welding engineering mainly include the following aspects: all defects that can be seen by the naked eye or a low power magnifying glass and located on the weld surface, such as undercut (undercut), weld beading, arc crater, surface porosity, slag inclusion, surface crack, unreasonable weld position, etc., are called external defects, and the internal porosity, slag inclusion, internal crack, incomplete penetration Non fusion, etc. are called internal defects. However, it is common that the welding slag, spatter and scar are not cleaned after welding. View >>