摘要
半固态触变成形技术以其降低宏观偏析、减少多孔性、成形力小和近终成形等优点受到广泛关注。在触变成形之前 ,使坯料具有均匀的固 液相分布和球状晶粒是很重要的 ,这就要求加热快而迅速。为满足这一要求 ,目前普遍采用电磁感应加热。文中对感应加热进行了有限元理论分析 ,采用商用有限元软件ANASYS对半固态触变成形坯料感应加热进行了数值模拟 ,模拟了频率、加热时间、线圈电流强度系数、坯料尺寸半径、线圈尺寸大小等参数对坯料温度的影响。
Semi solid metal forming processes have a great industrial interest for the production of various components because they have advantages such as reduction of macro segregation, reduction of porosity, low forming efforts and possibility of near net shape forming, etc. For the forming operation to work properly, it is important to heat the billet uniformly for the uniformity of solid liquid distribution and globular grain. It is also required to heat the billet as soon as possible. To satisfy these requirements, induction heating has been generally used for a long time. The induction heating process is analyzed using the commercial finite element software, anasys with the theoretical analysis of FEM to induction heating. The effect of induction heating including the variation of frequency of the inductor, time of heating, current intensity coefficient of the coil, size of the billet and size of the coil on temperature is analyzed.
出处
《金属成形工艺》
2003年第1期30-32,36,共4页
Metal Forming Technology
基金
教育部高等学校博士学科点专项科研基金
华中科技大学模具技术国家重点实验开放基金 (0 2 0 6 )
江西省材料科学与工程研究中心开放基金 (CL0 2 0 70 )资助
关键词
半固态
触变成形
感应加热
数值模拟
semi solid
thixoforming
induction heating
numerical simulation
