1. 汇报安排
题目：参加PRO-AM 2016国际会议总结报告会
时间：2016年5月30日19:00-19:20
地点：交大兴庆校区快速成型工程中心会议室
报告人：博1317班——田国强
学号：4113001026
指导教师：李涤尘 教授
2 .参加国际会议信息
会议名称：2nd International Conference on Progress in Additive Manufacturing (PRO-AM 2016)
会议日期：16-19 May, 2016
会议地点：NanYang Executive Center NTU, Singapore
会议简介：Riding on the success of the 1st Pro-AM Conference in 2014, the biennial conference will be held in Singapore for the 2nd time from 16 to 19 May 2016. In this conference cum exhibition, Pro-AM 2016 brings to you the latest commercial and scientific progress in Additive Manufacturing. Learn about scientific breakthroughs and technological advances in Additive Manufacturing from global subject matter experts and researchers. Witness the latest technologies and applications that will be displayed by commercial market players at the trade exhibition.
3. 参会论文信息
Title: Effect of Alumina-based Fiber on the Mid-temperature Strength of Integral Ceramic Mold for Casting Hollow Turbine Blade
Author: Guoqiang Tian, Zhongliang Lu, Weijian Wan, Kai Miao and Dichen Li
Abstract: The fabrication process of integral ceramic mold based on stereolithography and gelcasting can eliminate the assembly errors between cores and that between cores and shell in the traditional manufacturing process of ceramic molds. However, the bending strength of the mold at 500°C (mid-temperature strength) drops significantly during pre-sintering because the gel networks surrounded the ceramic particles are burnt off, which often causes the core fracture or shell cracking of the integral ceramic mold. In this paper, short alumina-based fibers were added into the gelcast ceramic slurry to improve the mid-temperature of the ceramic mold. Filling experiment and computed tomography (CT) test were performed to investigate the effect of fiber content and fiber length on the filling ability of ceramic slurry in the cavity with small complex structures. The mid-temperature strengths of the ceramic mold were tested. Microstructures of the ceramic mold sintered at 500°C were observed by scanning electron microscope (SEM). It was found that the filling ability of the ceramic slurry decreased as the fiber length and fiber content increased, however the mid-temperature strength of the ceramic mold increased with the fiber length and fiber content. When 1.5wt% short alumina-based fibers with lengths between 0.5 mm and 1 mm were added, the ceramic slurry could meet the requirement of gelcasting, and the mid-temperature strength of the ceramic mold was improved from 0.78 MPa to 1.65 MPa.
