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Qualitätssicherung in der Feststoffverfahrenstechnik
Author(s) -
Polke Reinhard
Publication year - 1990
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330621008
Subject(s) - quality assurance , quality (philosophy) , process (computing) , product (mathematics) , process engineering , qa/qc , computer science , reliability engineering , process control , final product , engineering , manufacturing engineering , mathematics , operations management , software construction , philosophy , external quality assessment , geometry , epistemology , software , market economy , programming language , operating system , software system , economics
Quality assurance in process engineering with solids. The properties of solid products depend not only on chemical composition but also on the state of dispersion. The knowledge of the effect of the state on the product quality is necessary for the development, production, and handling of disperse systems. The most important step of quality assurance and quality improvement is to find a way to define the quality of product by objective criteria, allowing a reproducible control based on measurements. After defining the criteria and tolerances for quality assurance, a layout for a reproducible and controllable processing must be developed and realized on a suitable plant. It is important to define quantifiable criteria for the product state in early stages in order to recognize deviations as early as possible. This is necessary to compensate fluctuations by the means of process control. It is not sufficient to do this separately for each process step but the whole process must be considered. Nevertheless a model for the whole process, which is able to describe the correlations between product properties, processing properties, and product quality, should be available in order to recognize the quality‐sensitive parameters.