CAJ | 학술논문

为了确定管材扩展组合模连续铸挤过程的变形力，将金属扩展组合模的模腔划分为导流区、扩展区、分流区、焊合区和定径区，分析各区金属的受力状态；用切块法建立各区应力计算公式。将金属连续铸挤型腔划分为液相区与半固态区、固态初始夹紧区和固态夹紧区，建立管材连续铸挤挤压力计算公式。在自行设计的连续铸挤机上进行铝管扩展组合模连续铸挤实验并测量其挤压力，获得的径向挤压力实验结果与理论计算结果吻合。
위료학정관재확전조합모련속주제과정적변형력，장금속확전조합모적모강화분위도류구、확전구、분류구、한합구화정경구，분석각구금속적수력상태；용절괴법건립각구응력계산공식。장금속련속주제형강화분위액상구여반고태구、고태초시협긴구화고태협긴구，건립관재련속주제제압력계산공식。재자행설계적련속주제궤상진행려관확전조합모련속주제실험병측량기제압력，획득적경향제압력실험결과여이론계산결과문합。
To determine the extrusion force of pipe fabricated by continuous casting and extrusion (CASTEX) using an expansion combination die, the metallic expansion combination die was divided into diversion zone, expansion zone, flow dividing zone, welding chamber, and sizing zone, and the corresponding stress formulae in various zones were established using the slab method. The deformation zones of CASTEX groove were divided into liquid and semisolid zone, solid primary gripping zone, and solid gripping zone, and the formulae of pipe extrusion forces were established. Experiments were carried out on the self-designed CASTEX machine to obtain the aluminum pipe and measure its extrusion force using the expansion combination die. The experimental results of radial extrusion force for aluminum pipe are in good agreement with the calculated ones.