PCB Blogger-China PCB Factory,HOYOGO

      Welding is to reliably connect all kinds of components that make up the complete machine product, and its quality is closely related to the quality of the complete machine product. The quality of each solder joint affects the stability, reliability and electrical performance of the entire machine. Do you know how to check the welding quality of PCBA manual welding?   1. Quality Requirement for Manual Welding 1) Electrical contact should be good:  Good solder joints should have reliable electrical connection performance, and  phenomena such as false soldering and  bridgin g  are  not  allowed.   2) Mechanical strength must be reliable: It is necessary to ensure that the solder joints will not fall off due to normal vibration during use.     3) Should maintain a beautiful appearance: The surface of a good solder joint should be smooth, bright, and free from sharp edges, wrinkles, bubbles, slag inclusions, and pitting. ...

      With the development of science and technology, the volume of PCBA is getting smaller and more precise, and some defects in processing cannot be distinguished with the naked eye, so AOI has appeared.  So what PCBA problems can AOI inspect?       The working principle of AOI is to first collect and input parameters such as images, component positions, solder joints and other parameters of the good-quality board.   During the inspection, the instrument automatically scans the circuit board and automatically captures the image, and then compares the collected data with the pre-entered parameters to determine whether the characteristics of solder joints, components and other aspects are consistent. If the data is inconsistent, the d efect  will be flagged through the display for maintenance personnel to repair.     AOI is mainly used to inspect solder paste printing, component placement and soldering. For example: too much or too ...

      The first article PCBA processing inspection means that the PCBA inspects the first produced PCBA product in each processing link. The first article inspection is an important control point to inspect the processing quality of the product. The first article must meet the document requirements before mass production.       First article inspection can detect problems as early as possible and prevent batch errors during PCBA processing.  Through the first   article   inspection, it can be found whether there are errors such as mi spaste , missing   paste   or multiple  paste   on the PCBA board, and corrective or improvement measures can be taken in time.     At present, many PCBA processing factories use the first article detector to judge the first article, only need to input the product's BOM, coordinates, bit number map, and then the system will automatically check the first article of product. It can che...