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6ways to reduce therate of PCBdefects in cars
     6ways to reduce the rate of PCB defects in cars The automotive electronics market is the third major application area of PCB after computers and communications. As the car from the mechanical products in the traditional sense, gradually evolved and developed into intelligent, information-based, mechanical and electrical integration of high-tech products, the application of electronic technology in the car has a very wide, regardless of engine system or chassis system, security system, information system, car environment system all adopt electronic product. The automobile market has obviously become another highlight of the electronic consumer market. The development of automotive electronics has naturally brought about the development of PCB for automobiles. In today's PCB key applications, automotive PCB takes an important place. But because of the special working environment, vehicle safety and high current characteristics, the reliability of PCB, environmental adaptability, higher requirements, PCB type of technology involved is broad, which for the PCB enterprises, is a challenge; and for those who want to develop the automotive PCB market manufacturers, understand the need to do and more analysis of the new market. Automotive PCB emphasizes the high reliability and low DPPM, so, whether our enterprise has manufacturing technology and the accumulation of experience in high reliability? Is consistent with the product development direction in the future? In the process control, is well in accordance with the requirements of TS16949 do? Whether have low DPPM? These are to be carefully evaluated, see this attractive cake and blindly into, will bring harm to the enterprise itself. The following is a representative part of the professional production of automotive PCB enterprises in the testing process of some special practices, to the vast numbers of PCB colleagues for reference: 1 and two test methods Some PCB manufacturers have adopted the "two test" method to improve the rate of defective plates after the first high-voltage breakdown. 2 、 broken board test system More and more PCB manufacturers have installed "good board marking system" and "bad plate anti mistake box" in the light board testing machine to effectively avoid man-made leakage. A good board marking system is a test machine, which identifies the tested PASS boards, and effectively prevents the tested boards or boards from flowing into the hands of customers. Bad board proofing box is in the testing process, test PASS test board, signal output of the system box; on the other hand, a bad test board, the box closed, allowing the operator to correct placement through the circuit board test. 3, the establishment of PPm quality system At present, PPm (Partspermillion, PPM defect rate) quality system has been widely used in PCB manufacturers. Among the many clients of our company, the application and achievements of HitachiChemICal in Singapore are the most worthy of reference. In the plant, more than 20 people are responsible for the quality of online PCB abnormalities and PCB quality abnormal return statistical analysis work. By using the statistical analysis method of SPC production process, each piece of bad plate and plate defects each returned classification statistical analysis, and the analysis of the defects and bad board in which the production process combined with micro slicing tool. According to the statistical data, the purpose is to solve the problems in the process. 4, comparative test method Some customers of different quantities of PCB with two different brand models comparison test, PPm and track corresponding quantity, so as to understand the performance of the two kinds of test machine, in order to test automotive PCB. selection testing machine with better performance 5, improve test parameters A higher test parameter is selected to investigate the PCB. strictly, because the detection rate of PCB defect plates can be increased if the higher voltage and threshold are selected and the number of high-voltage leakage reading is increased. For example, a large Taiwanese PCB enterprise in Suzhou uses 300V, 30M, 20 euro to test automotive PCB. 6. Check the parameters of the tester regularly After the test machine is running for a long time, the internal resistance and other related testing parameters will be biased. Therefore, the machine parameters need to be adjusted regularly to ensure the accuracy of the test parameters. Test equipment in a large part of the large PCB enterprises in six months or a year to complete the maintenance of the whole machine, adjust the internal performance parameters. The pursuit of "zero defect" Automotive PCB has been the direction of efforts for the majority of PCB people, but subject to restrictions on equipment, raw materials and many other restrictions, so far, the world's top 100 enterprises are still constantly exploring ways to reduce PPm PCB.




Japan Chuanshan Circuit Board Equipment Co., Ltd. was established in 1982, has experienced more than 30 years of growth and development. Over the years, we are committed to the development and manufacture of circuit board equipment for the circuit board industry to provide superior quality products and high quality Our main products include: Horizontal Wet Process Line, Cabinet and Tunnel Oven and Peripheral Automation Equipment. 1982 - 2008 We focus on Japan and Europe and the US market, 2010 We are in China And Southeast Asia and other regions, serving more than 500 circuit board manufacturers, is Japan's largest manufacturer of circuit board equipment one of the superior production results, handy operation, simple and efficient maintenance and safe and reliable operating system design concepts are It is the leading edge of the circuit board equipment industry, and has always been committed to the development and manufacture of circuit board equipment and ISO quality management system international standard. It is the quality of continuous operation of Chuanshan The company has developed a quality manual that meets ISO requirements, identifies service standards, document control systems, and speaks for all Related courses, in August 1985 and August 1990, respectively, passed the ISO-900 and ISO9001: 2000 BSI international certification. In September 1995, Chuan Shan successfully passed DNV certification CE, which not only proved that the Chuan Shan The results of efforts over the years, but also fully shows that we have been in progress, to make better products and efforts to enable customers in the production process as well as product quality to obtain greater protection.We use high precision CAD / CAM and the most Advanced simulation system to establish the unit structure, to its program, greatly improving the stability and reliability of the machine.We believe that advanced machinery and equipment and continuous improvement of production technology is the guarantee of high quality products.Therefore, we continue to introduce A large number of automated production systems, coupled with professional technical staff to meet the increasing quality of customer requirements. Chuan Shan has more than 1,000 professional technical staff, in accordance with the requirements of the project, provided by the Department of professional design and specification review, production Responsible for precision manufacturing and assembly, QC is rigorously tested to ensure the high quality of the product.With the increasing technical requirements of the industry, we have systematically More than 80 professionals from Japan and the United States are responsible for the development of research work, through their rich experience, the development of more advanced production technology and the development of high-quality, high-precision, Products, so that Katsuyama to maintain the leadership position in the market.In order to allow customers to fully appreciate the spirit of service Sichuan, we consider the needs of customers from various aspects and provide assistance; such as technical support, the effective supply of spare parts and professional advice To provide, etc. There are well-trained technical staff responsible for the installation of the machinery and equipment, operation training and maintenance works, Mu can provide the most complete after-sales service. Welcome to have the skills of the community to join!