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Ramjet 고속 추진체용 Alloy 718 합금 노즐 단조품 개발
박노광,김정한,김남용,이채훈,염종택,홍재근,백동규,최성규,Park, Nho-Kwang,Kim, Jeoung-Han,Kim, Nam-Yong,Lee, Chae-Hoon,Yeom, Jong-Taek,Hong, Jae-Keun,Baek, Dong-Kyu,Choi, Sung-Gyu 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.4
Alloy 718 nozzle component was manufactured by hot forging and electron beam welding process. In this process, 718 billets produced in domestic company were used and evaluated. Before performing industrial scale hot forging, small size hot compression tests were carried out under various process conditions and then microstructural evaluations were analyzed. Using the results, FEM simulations were performed in order to optimize the hot working process. After hot working, forged work-pieces were machined and welded by electron beam. Final nozzle components were heat treated and their microstructure and mechanical properties were investigated.
다구찌기법을 이용한 선박용 커넥팅로드 예비성형체의 최적 설계
박준홍(Joon-Hong Park),강정호(Jung-Ho Kang),하민수(Min-Soo Ha),김승규(Seung-Gyu Kim),최성규(Seong-Gyu Choi),백동규(Dong-Gyu Baek),박영철(Young-Chul Park) 한국기계가공학회 2007 한국기계가공학회지 Vol.6 No.4
In this paper, propose an optimal design to improve the mechanical efficiency of gate valve made by forging method. In order to design the experiments using table of orthogonal array and optimization design is conducted as application of real response model to Taguchi method based approximation model using computer simulation. Also, from verification of the response model with optimized results was confirmed that usefulness and reliance of application Taguchi method to structural optimum design using finite element analysis and equation.