Preparation of large size aluminium alloy cylindrical preforms by multi-layer spray deposition

来源期刊：中国有色金属学报(英文版)2000年第2期

论文作者：康智涛 李历历 陈振华 袁武华 傅定发 周多三

文章页码：196 - 199

Key words：multi-layer spray deposition; vertical spray; tilted spray

Abstract: Preparation of large scale aluminium alloy cylindrical preforms have been studied by the methods of vertical spray deposition and tilted spray deposition respectively. The results show that aluminium alloy cylindrical preforms of a size up to d320mm×500mm can take shape well by applying multi-layer tilted spray deposition technology if the process is controlled properly. The spray system scans in a radius ranging from the center to the rim of the preform, and the velocity is inversely proportional to the displacement. The multi-layer deposited preforms exhibit high cooling rate. The larger the diameter is and the higher the cooling rate and yield are.