Welding Processes via Lean Six Sigma Framework

The Lean Six Sigma (LSS) Framework is a tool to encounter waste management, reduction, regulation, and direct manufacturing processes. It is utilized in welding and has been proven to benefit the process by focusing on wastage reduction and directing the process precisely. Industrialization leads to the destruction of natural resources like water and land. The wastage control and process regulations for higher efficiency are minimal in various welding industries. This review explains how the LSS methodology can help reduce or eliminate defects observed in the industrial welding process. The fundamental and primary tool of LSS is known as the DMAIC principle (Define, Measure, Analyze, Improve, and Control). The process works by converting problem-solving into steps and setting milestones to monitor progress. DMAIC has been extensively utilized in a lot of studies for welding process optimization. This review provides an overview of the welding processes regulated using the LSS framework, the changes observed in various welding processes, and further guidance in sustainable welding practices.