胀接工艺对换热管力学行为的影响

doi:10.27022/j.issn2097-7697.2026.02.005

特种设备学报 ›› 2026, Vol. 1 ›› Issue (2) : 31-39. DOI: 10.27022/j.issn2097-7697.2026.02.005

试验研究

胀接工艺对换热管力学行为的影响

王晶¹, 薄东辉¹, 赵博², 贾燕中³, 赵丽辉⁴, 牛仲凯⁴

作者信息 +

Influence of Expansion Process on the Mechanical Behavior of Heat Exchange

WANG Jing¹ , BO Donghui¹ , ZHAO Bo² , JIA Yanzhong³ , ZHAO Lihui⁴ , NIU Zhongkai⁴

Author information +

文章历史 +

摘要

针对管壳式换热器换热管与管板安装时采用的胀接工艺存在塑性变形控制、残余应力、缝隙腐蚀等问题，本文聚焦胀接工艺下换热管的力学行为，以304不锈钢与Q245R碳钢材料为研究对象，采用实验与仿真结合的方法进行研究。模拟胀接过程的实际工况设计了换热管的胀接实验，应用电测法获取胀管率与等效应变的关系，建立了等效应力与胀管率的数学模型，可实现胀管过程中的应力监测。给出了胀接后换热管表面的残余应力分布规律，结果显示残余应力极值与最大应力梯度均出现在胀接区域端部附近，该区域应予以重点关注。

Abstract

Issues such as plastic deformation control, residual stress and crevice corrosion exist when the expansion welding process is used to install the heat exchange tubes and tube plates in shell-and-tube heat exchangers. This paper focuses on the mechanical behavior of the heat exchange tubes under the expansion welding process. Using 304 stainless steel and Q245R carbon steel as research materials, the study was conducted through a combination of experiments and simulations. The expansion welding experiment of the heat exchange tubes was designed based on actual working conditions. The relationship between the expansion rate and the equivalent strain was obtained using the electrical measurement method, and a mathematical model of equivalent stress and expansion rate was established, which enables stress prediction during the expansion process. The distribution law of residual stress on the surface of the heat exchange tubes after expansion welding is presented. The results show that the extreme values of residual stress and the maximum stress gradient both occur near the end of the expansion welding area, and this area should be given special attention.

导出引用

王晶, 薄东辉, 赵博, 贾燕中, 赵丽辉, 牛仲凯. 胀接工艺对换热管力学行为的影响[J]. 特种设备学报, 2026, 1(2): 31-39. https://doi.org/10.27022/j.issn2097-7697.2026.02.005

WANG Jing, BO Donghui, ZHAO Bo, JIA Yanzhong, ZHAO Lihui, NIU Zhongkai,. Influence of Expansion Process on the Mechanical Behavior of Heat Exchange[J].Journal of Special Equipment, 2026, 1(2): 31-39. https://doi.org/10.27022/j.issn2097-7697.2026.02.005

中图分类号： X933.4

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