为了研究双金属复合管挤压参数及其结合面的情况与挤压参数的关系，基于热力耦合的有限元原理，采用ABAQUS有限元软件，通过建立合理的有......

Based on analysis of the main forming methods for double-layer tube,a new short-term forming process called thixo-co-ext......