Application of active mold temperature control method in solidification

作者：You, Dong-Dong^*; Li, Wen-Fang; Shao, Ming

来源：Chinese Journal of Nonferrous Metals, 2009, 19(8): 1437-1442.

• Active temperature control
• Configuration software
• Experiment research
• Heating and cooling
• Isothermal surfaces
• Measure and controls
• Solid-liquid interfaces
• Solidification directions

An active mold temperature control method was presented and applied in solidification by developing a measure and control system. The forming process was controlled by the active outer controllable temperature field, which was brought by the individual heating and cooling units distributed in the proportional spacing towards the solidification direction in the mold. Thus, the product solidifies from the bottom to top. The flow control was implemented by developing the application based on the configuration software. The system and control strategy were verified and improved by simulation and experiment research of forming process. The simulation results show that the isothermal surfaces of workpiece are near-planar, and the solid-liquid interface moves up along the z direction during solidification progresses. The experimental results indicate that, by the active temperature control method case 2, no shrinkage defects exist in the product and the forming quality is promoted.

• 出版日期2009-8
• 单位华南理工大学