离心铸造制备双金属复合管的选材设计  

Materials Design of Bimetallic Composite Pipe Manufactured by Centrifugal Casting Process

作　　者：刘建彬 武博 燕铸 LIU Jianbin;WU Bo;YAN Zhu(China Petroleum Technology and Development Corporation,Beijing 100028,China;China Nuclear Power Engineering Corporation,Beijing 100840,China)

机构地区：[1]中国石油技术开发有限公司,北京100028 [2]中国核电工程有限公司,北京100840

出　　处：《钢管》2023年第1期49-51,共3页Steel Pipe

摘　　要：根据热平衡方程、凝固传热规律和内外层金属的物理性能,建立了双金属复合管内外层金属的熔点差与熔合层厚度比的关系模型。由关系式和关系曲线可知,熔点差△T与熔合层厚度比△d_(外)/d_(外)成正比,随着△d_(外)/d_(外)(0.02%-0.20%)的逐渐增大,△T的允许最大值也逐渐增大。在熔合层厚度比最大为0.20%的条件下,由关系式可得到组元金属的允许熔点差范围。According to the heat balance equation,the solidification heat-transfer law and the physical properties of metals of the inner and outer layers of the pipe,the model of the relationship between melting point difference of inner and outer metals and the thickness ratio of fusion layer of the bimetallic composite pipe is established.It is reveals via the relationship formula and the relationship curve that the melting point difference △T to the fusion layer thickness ratio △d_(o)/d_(o) is proportional,and that along with the △d_(o)/d_(o)(from 0.02%to 0.20%)gradually increases,the maximum allowed value of the △T is also increases gradually.When the maximum thickness ratio of the fusion layer gets up to 0.20%,the allowable range of △T of component metals can be obtained from the above mentioned relationship formula.

关 键 词：双金属复合管 离心铸造 选材设计 

分 类 号：TG249.4[金属学及工艺—铸造]