초내열합금 밸브의 성형공정 설계 및 미세조직 분석

Process Design in Forging of Ultra-Heat Resisting Alloy and Analysis of Micro-Structure

A proform for engine valve was designed by finite element method. In the preform design of engine valve, various initial billets are simulated for better preform to get sound final product. Here a preform is design to get desirable metal flow in the forming so that the final product has more uniform strain distribution. after forming. The analysis of the micro-structure of the value formed through the designed process was also performed and result was compared with that of simulation.