The FACTORY DIAGNOSIS DIAGRAM – An Efficient Tool for Quality Control

During electroplating or heat treatment operations parts are usually mounted on plating or charging racks, which can for practical purposes be described as position matrices. An optimized production process should exhibit no significant changes in the quality characteristics of the products after going through the production cycle regardless of the product's position within the matrix. Measurement results taken from a random sample of finished parts over a number of predetermined rack locations can be displayed easily in a Factory-Diagnosis-Diagram (FDD), which is introduced in this paper. The descriptive nature of this type of diagram truly provides an "at a glance" display of essential quality related information. Weaknesses in a manufacturing process or a production line become evident, without the need for complex data analysis. The advantages of the Factory Diagnosis Diagram, highlighted in this paper can be applied beyond example application to nearly all areas of production. __________________________________________________________________