Process capability improvement through DMAIC for aluminum alloy wheel machiningReport as inadecuate




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Journal of Industrial Engineering International

pp 1–14

First Online: 24 July 2017Received: 13 December 2016Accepted: 07 July 2017

Abstract

This paper first enlists the generic problems of alloy wheel machining and subsequently details on the process improvement of the identified critical-to-quality machining characteristic of A356 aluminum alloy wheel machining process. The causal factors are traced using the Ishikawa diagram and prioritization of corrective actions is done through process failure modes and effects analysis. Process monitoring charts are employed for improving the process capability index of the process, at the industrial benchmark of four sigma level, which is equal to the value of 1.33. The procedure adopted for improving the process capability levels is the define-measure-analyze-improve-control DMAIC approach. By following the DMAIC approach, the Cp, Cpk and Cpm showed signs of improvement from an initial value of 0.66, −0.24 and 0.27, to a final value of 4.19, 3.24 and 1.41, respectively.

KeywordsAlloy wheel CTQ critical-to-quality characteristic DMAIC define-measure-analyze-improve-control Ishikawa diagram PFMEA process failure modes and effects analysis Control charts  Download fulltext PDF



Author: G. V. S. S. Sharma - P. Srinivasa Rao - B. Surendra Babu

Source: https://link.springer.com/







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