Inspection is a product-centric activities, the monitoring is based on technology-centered activities. Both are needed for a quality program, but the long-term goal should be less product inspection, process monitoring and more. Passive product inspection (defect has occurred), and monitoring of the process is active (defect can prevent) - It is clear that prevention is better than the defects that have been reactive to be useful to make more.
Check is actually a screening process, as it attempts to find the product unacceptable to repair. Very clear the fact that a large number of checks does not necessarily improve or ensure product quality. Deming (Deming) two p.m. The third said, "Do not expect a large check." Deming stressed that the process should be a strong focus on creating a stable and repeatable, statistical process monitoring objectives, rather than the large quantities of checks.PCB assembly Inspection is a subjective activity, even if a considerable degree of training, it is also a difficult task. In many cases, you can call a group of inspectors to evaluate the weld point, but get several different views.
Check to constantly remind you that your assembly process is not there too many variables. Even in your manufacturing process to achieve zero defect production continued after some form of inspection or monitoring to guarantee the desired quality level is necessary. SMT assembly is a very complex series of events and a large number of individual actions. Our trick is to create a balance check (inspection) and monitoring (monitering) strategy, without the need for 100% inspection. Discussed in this article is to examine the methods, techniques and manual inspection tools and review the use of automated checking tools and test results (number and type of defects) to improve the process and product quality.