Design and characterisation of a co-extruder to produce trilayer ceramic tubes semi-continuously

被引：17

作者：

Liang, Z

Blackburn, S ^{[1
]}

机构：

[1] Univ Birmingham, IRC Mat High Performance Applicat, Birmingham B15 2TT, W Midlands, England

[2] Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, W Midlands, England

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2001年 / 21卷 / 07期

关键词：

Al2O3; clays; composites; plasticity; shaping; extrusion;

D O I：

10.1016/S0955-2219(00)00292-2

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A co-extruder with three separate barrels operated by a single ram has been designed to produce trilayer tubes semi-continuously. A vital step in the design was to predict the pressure required to generate a sufficiently high extrudate velocity while being able to retain the extrudate integrity. A physically based model was used to predict the pressure drops in the co-extrusion process at three different extrusion velocities for five pastes with different rheological characteristics. In general, predicted and measured values were in good agreement. Other important aspects in the co-extruder design, such as velocity and pressure matching of different Row streams are also highlighted. Trilayer ceramic tubes were successfully produced from the designed co-extruder. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：883 / 892

页数：10