Testing and Processing # 1985 York
Modern extrusion will in future mean computer control. Even the mere introduction of a microcomputer-based wall thickness measuring apparatus helps to save 1-2 % of material in pipe manufacture. Automatic centering of the die, in conjunction with wall thickness measurement and with gravimetric feed of the extruder, with throughput control or weight per metre control, completes the feedback system for automatic pipe extrusion. This allows material savings of 3 to 4 % or even more. First and successful strides forward have been made in the direction of optimized profile extrusion. Computer control of extrusion lines means cost savings and quality improvements even today, and will be a "must" in future.