Bimetallic composite pipe has a wide range of application prospect in the petroleum transportation industry,the combination of properties is to examine whether the composite pipe is qualified as one of the important indicators.In order to obtain high-quality composite pipes in the process of rolling and forming,interfacial metallurgical composite must be realized in the process of composite billets.In this paper,based on the combination of temperature and element diffusion,20 steel and 316L were used as raw materials to study the temperature model of the bonding interface under solid-liquid composite mode,and through the ProCAST software simulation to obtain the optimal preheating temperature of the outer mold 1 050-1 100℃.The metallurgical composite was achieved through on-site trial production,and this temperature range ensures that the metallurgical composite can be achieved between solid 20 steel and liquid 316L,so that there is sufficient diffusion time for the elements to enhance the interfacial bonding strength,but also prevents the deteriorate of 316L corrosion performance due to the transitional diffusion of the elements.This method provides excellent billets for subsequent continuous rolling of composite pipes,which can realize on-site production of high-quality composite pipes.
关键词
固液复合/复合管坯/热传导/界面/结合强度/扩散/20钢/316L/模型
Key words
solid-liquid composite/composite billet/heat transfer/interface/binding strength/diffusion/20 steel and 316L/mold
维普
万方数据