Excerpt from the January 2017 article in International Journal of Engineering Research and Technology by M.R. Latte and P.D. Chougule.
In this research paper, the blow-hole defect analysis of MH1-VST 4-cylinder block fitted on tractors is presented as a case study. An MHI-VST 4-cylinder block is the central component of a tractor or any vehicle. It plays an important role in lubrication, temperature control and stability of the engine. It must be of the highest quality so there is no room for shortcuts. In this case study, parts pre- and post-analysis is done by using quality control (QC) tools such as Pareto charts and cause/effect diagrams. A DMAIC approach is followed and proper actions are taken to reduce the defect and rejection rate at the factory end. The work is done under two phases:
Phase 1: identifying drastic effects of blow holes in production;
Phase 2: sorting out the issues by using various QC tools and expert opinion.