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In the process of PCBA board production by ipcb, PCBA technology will inevitably encounter PCB board during manual operation. Will his finger lines affect a batch of PCBA processing? What adverse effects will there be?
Next, please take a closer look at the following precautions:
1. The bare hand touch panel before resistance welding will lead to resistance welding, resulting in poor adhesion of green oil and blistering and falling off of hot air at ordinary times.
2. The bare object contacting the PCB board causes the copper on the PCB board surface to undergo chemical reaction in a very short time, the copper surface is oxidized, and the time is slightly longer. After electroplating, there are obvious fingerprints, the coating is uneven, and the appearance of PCBA patch of PCBA board products is seriously affected.
3. There is fingerprint grease on the board surface before printing wet film and screen printing PCB circuit and film pressing, which is easy to reduce the adhesion of dry / wet film. During electroplating, the coating and coating are separated, and the gold plate is easy to cause the board surface pattern. After resistance welding, the PCBA board surface is oxidized and presents yin-yang color.
4. During the process from resistance welding to packaging, bare hand contact with the plate surface will lead to unclean plate surface, poor weldability or poor bonding quality.
PCBA products are often micro products. The assembly and manufacturing process of PCBA products in PCBA patch factory is a micro manufacturing, precision manufacturing and high-speed manufacturing process, and has a high degree of automation and production efficiency. Accordingly, it has high requirements for measurement and control technology and methods in the assembly and manufacturing process, The quality measurement and control technologies and methods applied to the production process of traditional circuit products, such as manual visual inspection or manual auxiliary detection and analysis with the help of conventional detection equipment, can not adapt to this production mode in terms of precision and speed. PCBA patches completely adopt automatic detection methods such as optical automatic detection and computer-aided assembly quality statistics, Analysis and control technology and means for PCBA assembly quality automatic detection and control is not only the current development status, but also an inevitable development trend.
The miniaturization, high density, variety diversification of PCBA products of PCB board manufacturer, as well as the high automation and rapidity of assembly and manufacturing process, make the amount of quality detection and control information large and complex, and rely on the manual or manual assistance of traditional circuit product patch processing and production process for quality information collection, statistics, analysis and diagnosis for quality control, It is impossible to be competent in terms of speed and accuracy. Therefore, the intelligent quality measurement and control technology based on automatic detection technology and with the help of computer-aided and intelligent control technology instead of manual automatic collection, statistics, analysis, diagnosis and feedback of quality information has become the necessity of the development of PCBA assembly quality detection and control technology, The methods and means of intelligent control are becoming more and more abundant.
The high cost of ipcb products and their assembly and manufacturing and the difficulty of repairing defective products force people to do everything possible to solve the quality problems in the assembly and production process, so as to avoid product repair and scrapping as much as possible, which puts forward real-time requirements for PCBA product quality inspection and control. The diversity of PCBA products and the high speed of assembly and manufacturing process, It also brings considerable difficulty to the realization of real-time.
