An Experimental Study Using Plasticine for the Hot Extrusion Processes of Regular Square Sections throuth Square Dies

플라스티신을 이용한 정사각형재의 열간 평금형 압출공정에 관한 실험적 연구

An experimental study to analyze thd hot extrusion processes of regular square section through square dies is carried out by using plasticine as a model material at room temperature. The experimental setup for the extrusion of squared section from round billets through square dies is designed and manufactured. In order to visullize the plastic flow in the extrusion process the technique of gridding on the planes of the sysmmetries and a stacking the desks with different colors are employed. Velocity fields on the symmetry planes are obtained by using grid distortion.