Computer-aided quality in fibre-cement pipe production

Abstract

Computer-aided quality (CAQ) is practised in a fibre-cement pipe manufacturing plant. Because of the inherent time lag between pipe production and pipe testing, product quality can be assured only by emphasizing process quality control. Quality assurance-related data were collected, managed, analysed and reported to indicate the need for the development of a computer-aided quality (CAQ) system. The paper emphasizes process quality control which includes the identification of significant process parameters, the use of economically designed control charts and the introduction of efficient feedback mechanisms. The salient features of the CAQ system, its capabilities, design, performance, utilization, and implementation are given. Implementation significantly reduced product defects and minimized variability in both process and pipe quality parameters.