Disadvantages of Control Chart in Printing Quality Control over Solder Paste and Strategies for Improvement

Chen Peng, Kenny Liu, Xiaohui Gu

Abstract


Control chart is one kind of the most common and effective tools for SPC quality control, however, it is not infallible for ever. The results of actual data processing have proved that the conventional control chart may educe the opposite conclusions to other evaluating methods in some special cases. For solving the above problems, we use Bayes theory to introduce proper ‘correction coefficient’ to amend the control parameters so that the control limit is more accurate and the judgment is more reasonable and reliable.


Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

Modern Applied Science   ISSN 1913-1844 (Print)   ISSN 1913-1852 (Online)

Copyright © Canadian Center of Science and Education

To make sure that you can receive messages from us, please add the 'ccsenet.org' domain to your e-mail 'safe list'. If you do not receive e-mail in your 'inbox', check your 'bulk mail' or 'junk mail' folders.