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조창연(C. Y. CHO),박성우(S. W. PARK),이종억(J. O LEE),서효성(H. S. SEO),이정민(J. M. LEE) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.10
Typically, the thermoplastic material fabrication processes and production time while minimizing the loss of mechanical properties to produce superior products that are known for molding method. The extrusion method with minimal loss of material with excellent mechanical properties and a thin wall thickness to create a large-size Tube is widely used in construction. This study has been reformed for the relation of deformation between a die and products in backward extrusion. Especially, the pressure load and products eject method is very important factor for the improvement of extrusion process. Therefore, we developed a forging die shape for reduce pressure load and optimal product.