Direct Digital Manufacturing HOW NONLINEAR MODELS HELP IMPROVE THE PRODUCTION ECONOMICS OF EXTRUSION PROCESSES

摘要

Extrusion is a common production process not only for plastics and rubber, but also for metals including copper and aluminium alloys, for food materials like spaghetti, an for no-slump concretes. Different extrusion processes have their differences, but there is a lot of physics and engineering in commc to all of them . Even the production objectives are similar. The production manager usually wants to maximise the production, often in terms of line speed. The operator has to keep the process variables within certain limits specified by the equipment and raw material suppliers. The customer wants particular product properties to be within specified limits.