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Many of metallurgical companies are joined to the chain of suppliers of automotive producers. Automotive industry suppliers must submit evidence about capability of their processes, which is evaluated on the basis of quality of products produced by these processes. In the cases of normally distributed quality characteristics process capability analysis is performed according to standard procedure. Problems are in the cases, when data of monitored quality characteristic are not normally distributed. Example is symmetry of produced parts. This paper is focused on capability analysis of overmoulding process in terms of achieving part symmetry. Measured part consists of metal rod and overmoulded eye. There are presented various approaches to process capability analysis in this case and suitable procedure for non-normality solution is proposed in this paper.
Keywords: process capability analysis, non-normal quality characteristic, symmetry© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.