Date：2021-08-03 18:32:00

Slicing is a sample preparation method of wrapping and sealing the sample with special liquid resin, and then grinding and polishing. The detection process includes sampling, sealing, grinding, polishing, and finally providing morphological photos, judgment or size of crack delamination. Slicing technology, also known as slicing or metallographic slicing and micro slicing (English Name: cross section, X-section), is the most commonly used sample preparation and analysis method to observe the cross-section structure of samples. View >>

Date：2021-08-03 17:34:00

Nondestructive testing refers to using the changes of thermal, acoustic, optical, electrical, magnetic and other reactions caused by abnormal internal structure or defects of materials to analyze the internal and surface structure, properties, state, type, quantity, shape, position, etc. of the test piece without damaging the service performance of the tested object and the internal organization of the tested object Methods of inspection and testing of dimensions. View >>

Date：2021-08-03 16:20:00

Plating is to coat a layer of plastic on the metal surface of some articles for good-looking or storage, or a thin layer of metal, or to imitate a precious metal, a thin layer of this precious metal is plated on the surface of ordinary metal. Coating thickness test the thickness test of metal and oxide coatings on the surface of materials. The surface covering layer is to make the material surface have certain strengthening, protection (such as anti-oxidation and anti-corrosion) decoration or special functions (such as conductivity, insulation, invisibility, etc.), and form one or more layers of covering layers with a certain thickness and different from the base material on the surface of metal or non-metal substrate by physical or chemical methods, so as to meet the requirements of product design and use. View >>

Date：2021-08-03 10:22:00

First, let's learn about component screening. Electronic component testing and screening service is also called secondary screening of electronic components. The secondary screening of electronic components refers to the screening of electronic components by the user or a third party entrusted by the user on the basis of the screening of component manufacturers. View >>

Date：2021-08-02 18:29:07

If the electronic components 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 waste time and energy, and damage the components and printed circuit board. It is best to list the required components according to the circuit schematic diagram before hands-on preparation. In order to ensure that there is no waste of time and reduce errors in the trial production process, and ensure that the finished device can work stably for a long time, it must also be screened and tested after all components are prepared. View >>

Date：2021-08-02 18:15:08

Whether electronic equipment can work reliably is based on whether electronic components can work reliably. If the early failure components are installed on the whole machine and equipment, the early failure rate of the whole machine and equipment will be greatly increased, its reliability can not meet the requirements, and it will have to pay a great price for maintenance. Therefore, before the electronic components are installed on the whole machine and equipment, we should try to eliminate the components with early failure as much as possible. Therefore, we should screen the components. View >>

Date：2021-08-02 17:00:00

Components shall be screened according to relevant screening technical conditions and can be used only after passing the screening. In order to prevent false welding caused by oxidation at the welding end after screening of chip components, it is forbidden to screen chip components without weldability treatment conditions at the welding end. Components are the basis of the whole machine. The inherent reliability of electronic components depends on the reliability design of the product. In the manufacturing process, it may form time or stress-related failure in use due to its inherent defects or improper control of manufacturing process. In order to ensure the reliability of the whole batch of components, we should try to eliminate the components with early failure as much as possible before the electronic components are installed on the whole machine and equipment. Therefore, we should screen the components. View >>

Date：2021-08-02 16:35:00

Chip testing needs very professional equipment. In order to strengthen the supervision of inspection and testing institutions and facilitate social inquiry and supervision, the General Administration of market supervision began to provide the society with online inquiry service on the number validity of inspection and testing reports. How to view the authenticity of a third-party test report? What is the purpose of the inspection report? How to distinguish the authenticity of the inspection report? First of all, let's talk about the test report. Before the goods are sold on the market, manufacturers and businesses need to provide products to an authoritative third-party testing organization for product quality testing. The qualified product organization will issue a quality testing report to recognize the quality of the manufacturer's products. Such products meet the needs of listing and customers. In short, it is not only a consumer service guarantee for consumers, but also a product quality guarantee for businesses View >>

Date：2021-07-30 18:20:29

Wear is a phenomenon of continuous damage caused by the gradual separation of wear debris on the surface when the object moves relatively under the action of friction. Wear failure refers to the failure of mechanical parts to reach the original design efficiency due to the occurrence of wear phenomenon, that is, they can not reach the original design level. Wear failure is a process of gradual development and gradual change, ranging from a few hours to a few years. Wear, fracture and corrosion are called three forms of metal failure analysis, and their harm is very amazing. View >>

Date：2021-07-30 17:34:00

Corrosion failure corrosion refers to the damage phenomenon caused by chemical or electrochemical reaction on the surface of metal or alloy materials. Although metal corrosion plays a beneficial role in pickling, chemical power supply, electrochemical machining, metallographic etching and so on, it has caused serious losses in the national economy. Because corrosion is the phenomenon that mechanical components lose their original design function, it is called corrosion failure. View >>