高级检索
王文琴, 徐永东, 韩召先, 张超华, 贾剑平, 王非凡, 李玉龙. 电阻缝焊制备铁基非晶涂层温度场数值模拟[J]. 焊接学报. DOI: 10.12073/j.hjxb.20230910001
引用本文: 王文琴, 徐永东, 韩召先, 张超华, 贾剑平, 王非凡, 李玉龙. 电阻缝焊制备铁基非晶涂层温度场数值模拟[J]. 焊接学报. DOI: 10.12073/j.hjxb.20230910001
WANG Wenqin, XU Yongdong, HAN Zhaoxian, ZHANG Chaohua, JIA Jianping, WANG Feifan, LI Yulong. Numerical simulation of the temperature field in resistance seam welding for fabricating Fe-based amorphous coatings[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION. DOI: 10.12073/j.hjxb.20230910001
Citation: WANG Wenqin, XU Yongdong, HAN Zhaoxian, ZHANG Chaohua, JIA Jianping, WANG Feifan, LI Yulong. Numerical simulation of the temperature field in resistance seam welding for fabricating Fe-based amorphous coatings[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION. DOI: 10.12073/j.hjxb.20230910001

电阻缝焊制备铁基非晶涂层温度场数值模拟

Numerical simulation of the temperature field in resistance seam welding for fabricating Fe-based amorphous coatings

  • 摘要: 通过电阻缝焊成功在SUS304上制备出铁基非晶涂层,并测量熔覆过程的温度热循环. 基于Comsol采用电-热耦合的有限元方法,重点分析熔覆过程电流密度及温度场的动态分布及换热机理,对比温度场的试验和模拟结果可知,相同位置模拟与试验的温度热循环曲线误差很小,验证了电-热耦合方法计算电阻缝焊熔覆制备铁基非晶涂层温度场的可靠性. 结果表明,高电流密度区域主要存在于电极轮正下方粉末层底部的某些点位、以电极轮与粉末层接触面左右两端为中心的邻近区域, 铁基非晶涂层熔覆过程的温度场不仅与电流密度分布相关,还受电极轮移动及涂层与附近区域的热交换所影响,使稳定时,在纵向温度几乎没有变化,在x-z截面呈左边高右边次之中间低的“凹”字形分布,相对应的热循环曲线则呈“升-降-升”的整体升温趋势.

     

    Abstract: A Fe-based amorphous coating was successfully fabricated on SUS304 using resistance seam welding, and the thermal cycling history during the welding process was measured. Based on the Comsol, the electric-thermal coupling finite element method (FEM) was adopted to analyze the dynamic distribution of current density and temperature field during the cladding process, as well as the heat exchange mechanism. By comparing the experimental and simulated results of the temperature field, it can be concluded that the error in the temperature thermal cycle curve between the simulation and experiment at the same position is very small, which verifies the reliability of the electric-thermal coupling FEM in calculating the temperature field of the Fe-based amorphous coating fabricated by resistance seam welding cladding. The simulation results indicate that the high current density region mainly exists at certain points at the bottom of the powder layer directly under the electrode wheel, the powder layer centered on the left and right ends of the contact surface between the electrode wheel and the powder layer, and the adjacent region of the electrode wheel. The temperature field during the cladding process of Fe-based amorphous coatings is not only related to the distribution of current density but also influenced by the movement of the electrode wheel and the heat exchange between the coating and the surrounding region. When the cladding is in the stable region, the peak temperature remains almost unchanged in the longitudinal direction. In the x-z cross-section, there is a ‘concave’ distribution with higher temperature on the left side, lower temperature in the middle, and intermediate temperature on the right side. The corresponding thermal cycle curve shows an overall increasing trend of ‘rise-fall-rise’.

     

/

返回文章
返回