SMT X-ray inspection NDT Non Destructive Testing

Solder paste printing defects and solutions in SMT chip processing process www.seamarkxray.com    sales25@zhuomao.com.cn +8618779975930 In the SMT chip processing process, solder paste printing is very complicated, and it has very important significance for product quality. This article mainly discusses the common defects of solder paste printing. 1. Incomplete printing: The solder paste has insufficient viscosity and cannot be effectively attached to the PCB or the blade is worn; Solutions: ①Replace the solder paste. When selecting the solder paste, the size of the solid metal particulates should be considered, and the particle size should be smaller than the opening size of the steel mesh; ②Regularly check and replace the scraper; 2. Solder skip, Non-wetting/false soldering: insufficient solder paste or unqualified PCB, easy to appear Solder skip, Non-wetting/false soldering; Solutions: ①Choosing a well-known manufacturer of PCB board brands can reduce t...

AOI & X-ray Inspection Equipment Advantages AOI (Auto Optical Inspection), It has been widely used in the circuit board assembly line of the electronics industry, and has replaced the previous manual visual inspection operations. AOI uses imaging technology, to determine whether the object under test conforms to the standard based on whether there is a large difference, between the object to be measured and the standard image. Now and In the past Of AOI Before, AOI was used to detect whether the surface printing of the IC (integrated circuit) package was defective. As the technology evolved, Now it was used to detect the PCB assembly on the quality status of SMT assembly line, or check whether the solder paste meets the standards after printing. The biggest advantage of AOI is that it can replace the manual visual inspection before and after  SMT reflow soldering , and it can judge the shortcomings of SMT assembly assembly more accurately than the huma...

SMT BGA X Ray machines Article by Parminder Singh And Joy Rong We define our SMT process on the basis so many assumptions, starting from Paste printing machine till reflow. In printer we set our parameters till we get good quality print, similarly for pick and place machine, till all the component is perfectly aligned, and then reflow we set the profile and run the PCB. And after reflow we do AOI and say perfect joints and start running the production. Wait here is where self deception comes into the picture let me explain? If you see a person with coat, pant and tie do you think he is an intelligent, soft spoken, mild hearted and polite by nature? No until or unless you meet him speak to him and judge his capabilities before that you cannot tell he is a right person or not? More over as the time passes you come to know that he has some good qualities and some bad qualities. Your product quality is good is self deception by the SMT manufacturer without X Ray machine ...