Statistical Controls have a Significant Influence on Non Quality Costs. Cases Study in a Company those Manufacturing Aluminum Castings Components

The aim of this paper is to present the connection between the Quality Cost (Cost of Conformance) and the Non Quality Cost (Cost of Poor Quality). The major objective of each production company is to produce added value, and this is possible if they have like ultimate goal, the reduction of waste. Quality Cost are describe in the specific literature as an iceberg, that containing a conglomeration of waste, and we can see only a little part of it. Usually what we can see are a part of Non Quality cost as rejection parts and the customer returns or official claims. This is the reason we start our analysis with this variables that are the most important component of Non Quality Cost. Because the decrease of Non Quality Cost is proportional with the increasing of Quality Cost, we chose to exanimate the influence of introduction Statistical Control in production– Categories of cost of Conformance (Prevention Cost), in Non Quality Cost. The above study was performed in manufacturing aluminum components during nineteen months. The collected data was then analyzed with a descriptive statistics in order to see the relation between the quality and non quality costs. Results are showing that the Non Quality Cost can be improve if we introduce in production the Statistical Control, that's the reason we propose to plan in advance this quality tools for all the process of production.