厚壁无缝钢管垂直挤压模具及润滑工艺研究

针对厚壁无缝钢管的特点,对热挤压法制造无缝钢管中的垂直挤压工艺进行研究。介绍了厚壁无缝钢管热挤压的工艺流程,并重点分析模具结构和润滑条件热挤压工艺过程中的两大重要因素。最终提出了多角度挤压入模角的模具结构及模具—坯料复合润滑方案,在降低挤压力的同时获得了表面质量较高、综合力学性能较好的厚壁无缝钢管。

Study on the vertical extrusion process of thick seamless steel pipe

According to the characteristics of thick-walled seamless steel pipe,the vertical extrusion process of the thick-walled seamless steel pipe is researched in this work.The whole process chain is introduced and the two key factors including die structure and lubrication condition are discussed in detail.In the end,the die structure with multi-angular die angle and a reasonable die-billet composite lubrication program are put forward and the thick-walled seamless steel pipe with good surface quality and combined mechanical properties is obtained under lower extrusion force.