Reduction in Repair rate of Welding Processes by Determination & Controlling of Critical KPIVs

Faheem Yousaf; Dr. Shahid Ikramullah Butt

doi:10.4995/ijpme.2014.1609

Authors

Faheem Yousaf National University of Science and Technology Pakistan.
Dr. Shahid Ikramullah Butt National University of Science and Technology Pakistan.

DOI:

https://doi.org/10.4995/ijpme.2014.1609

Keywords:

Statistical Process Control (SQC), Process Capability Indices, Six Sigma, Variable control chart, Pareto charts, Standard deviation, Critical to Quality (CTQ), Analysis of Variance (ANOVA), DMAIC, Total quality Management

Abstract

Six Sigma is being Implemented all over the World as a successful Quality Improvement Methodology. Many Companies are now days are using Six Sigma as an Approach towards zero defects. This article provides a practical case study regarding the implementation of Six Sigma Project in a Welding Facility and discusses the Statistical Analysis performed for bringing the welding processes in the desired sigma Limits.

DMAIC was chosen as potential Six Sigma methodology with the help of findings of this Methodology, Six Sigma Team First Identified the critical Factors affecting the Process Yield and then certain Improvement Measures were taken to improve the Capability of Individual welding Processes and also of Overall Welding Facility. Cost of Quality was also measured to Validate the Improvement results achieved after Conducting the Six Sigma Project.

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Author Biographies

Faheem Yousaf, National University of Science and Technology Pakistan.

Faheem Yousaf is Masters Student at National University of Science and Technology in the School of Mechanical and Manufacturing Engineering. He received his Bachelor’s degree in Industrial Engineering from University of Engineering and Technology Pakistan. His research interests include Quality Management, Operation Management and Manufacturing Engineering.

Dr. Shahid Ikramullah Butt, National University of Science and Technology Pakistan.

Shahid Ikramullah Butt, PhD, is Head of Mechanical Engineering at National University of Science and Technology in the School of Mechanical and Manufacturing Engineering. He has fifteen years of Industrial and Teaching Experience with different Organizations. Dr. Shahid received his Masters degree in Industrial Engineering from Mississippi State University and later on got his PhD. in industrial and manufacturing engineering from Beijing Institute of technology, China.

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