Problem solving in sintering of tungsten heavy alloy product - a case study

The authors in DMRL are engaged for last three decades in development and p roduction of a repertoire of tungsten heavy alloy products mainly for defen ce applications where stringent quality control is imperative. An exhaustiv e knowledge-base has been built over the years with inputs from literature and in-house use R&D. This knowledge-base generally ensures continuous and smooth production of quality products. But, there was a case where this kno wledge-base of sintering had been proved to be incapable of ascertaining an d solving certain production problem. This particular problem was analysed and solved by Ishikawa technique. Based on the experience, the authors advo cate that the knowledge of different statistical and problem solving tools is essential in the field of powder metallurgy. (C) 2001 Published by Elsev ier Science B.V.