The main purpose of using AOI is to inspect the process of the SMT production line which can also be considered as the tool for quality assurance and quality control.
Quality assurance is the assurance for the back-end process, i.e. the 100% assurance for zero-defect of production quality. All defects must be found and then repaired to achieve this requirement. AOI is normally in used at the post-reflow process for this purpose. Therefore, the AOI here plays an important role to detect all defects and also to support the reparability of all defects found.
Quality Control is aimed to keep the highest process quality in the factory. In order to achieve this purpose, AOI is usually in used at the pre-reflow, pre-IC-mounting or post-printing processes which enable the monitoring the real situation of the production line by inspecting all of and the defects. Furthermore, the causes of defects are able to be analyzed in real time.
Quality Control is aimed to keep the highest process quality in the factory. In order to achieve this purpose, AOI is usually in used at the pre-reflow, pre-IC-mounting or post-printing processes which enable the monitoring the real situation of the production line by inspecting all of and the defects. Furthermore, the causes of defects are able to be analyzed in real time.
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