Date：2021-10-12 13:03:54

Most of the weldments are welded by steel plate or section steel. Aluminum and aluminum alloy, copper and copper alloy, titanium and titanium alloy, cast iron, plastic and other materials can also be welded. The weldability of materials is a prerequisite to determine whether the structure can be welded. Designers must consider the weldability of materials. Attention shall be paid to the design of welded joints and welds in the design. Try to make the street form simple and the structure continuous, reduce the turning of the force flow line, do not choose too large weld leg size, reduce the weld section size, and consider the feasibility and convenience of structural manufacturing. View >>

Date：2021-10-12 13:00:00

In order to obtain high-quality welded joints, it is necessary to reasonably select welding materials. Because the working conditions of welded parts are very different in operation, the material properties and components of base metal are very different, and the manufacturing process of parts is complex, it is necessary to comprehensively consider all aspects to determine the corresponding welding materials. What are the welding materials? Next, let's take a look at the principles that should be followed in selecting welding materials. View >>

Date：2021-09-30 13:42:44

In modern industrial automation consumption, appearance visual inspection equipment touches a part of a variety of inspection, measurement and identification applications, such as dimensional inspection of auto parts and integrity inspection of automatic assembly, electronic assembly line of automatic positioning components, beverage bottle cap for printing quality inspection, sign inspection and mobile phone back cover, Bar code and character recognition on product packaging. It is widely used in many fields because of its accuracy, repeatability, high speed, objectivity and low cost. View >>

Date：2021-09-29 14:20:00

Semiconductor equipment is electrical equipment manufactured using semiconductor components. Semiconductor refers to the material whose conductivity is between conductor and insulator at room temperature. Semiconductors are widely used in radio, television and temperature measurement. For example, diodes are devices made of semiconductors. View >>

Date：2021-09-28 18:13:55

Nowadays, with the continuous improvement of people's requirements for the quality and reliability of electronic products, the reliability of electronic components has attracted people's attention. How to improve reliability has become a hot issue in electronic component manufacturing. For example, the quality reliability of electronic components such as satellites, aircraft, ships and computers is the basis of the quality reliability of satellites, aircraft, ships and computers. These have become the driving force of the reliability development of electronic components, and the failure analysis of electronic components has become a very important part. View >>

Date：2021-09-28 18:03:14

Electronic components mainly include components and devices. Electronic components are finished products with unchanged molecular components in the production and processing process, such as capacitance, resistance, inductance, etc. Electronic equipment is the finished product whose molecular structure changes in the process of generation and processing, such as electron tube, integrated circuit and so on. Therefore, mastering the effective mechanism and characteristics of various electronic components is an indispensable knowledge for hardware engineers. Next, analyze the failure of various electronic components. View >>

Date：2021-09-28 15:10:16

For the incoming components, first check them according to relevant standards and specifications, and pay special attention to whether the performance, specification and packaging of components meet the ordering requirements, whether they meet the requirements of product performance indicators, whether they meet the production requirements of assembly process and assembly equipment, and whether they meet the storage requirements. The incoming inspection of components is a very important link. By strictly controlling the incoming link, it has an important impact on the final product quality. In order to ensure the quality of PCBA processing and the smoothness of the processing process, it is necessary to conduct incoming inspection on the customer supplied materials. Next, I will introduce the content of incoming inspection of components. View >>

Date：2021-09-28 15:07:02

Once a company made a statistics to classify the causes of product quality problems. It was found that there are four parts: design, incoming materials, manufacturing process (production) and storage and transportation, accounting for 25%, 50%, 20% and 1 ~ 5% respectively. The problem of incoming materials accounts for 50%, so we come to the conclusion that incoming material inspection is very important. Similarly, in order to ensure the PCB substrates used in the production of SMT production line, these incoming materials must be tested before being put into production to determine whether they meet the production standards. Incoming material inspection is generally carried out by visual inspection in actual production. View >>

Date：2021-09-28 15:03:28

What is performance testing? Performance test is to test various performance indexes of the system by simulating a variety of normal, peak and abnormal load conditions through automatic test tools. Both load test and stress test belong to performance test, which can be carried out in combination. Through the load test, the system performance under various workload is determined. The goal is to test the changes of various performance indexes of the system when the load gradually increases. Stress testing is a test to obtain the maximum service level that the system can provide by determining the bottleneck or unacceptable performance point of a system. View >>

Date：2021-09-27 16:02:00

Now China's national economic level is rising, and more and more people begin to pay attention to the third-party testing institutions. In this environment, many such institutions also begin to appear gradually. For the rapidly developing testing market, there are still many unsolved or urgent problems on the road of development and innovation. How to choose a regular CNAs testing laboratory? We can make decisions from the following aspects. View >>