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
王文琴 1徐永东 1韩召先 2张超华 1贾剑平 1王非凡 3李玉龙1
作者信息
- 1. 南昌大学,先进制造学院,南昌,330031
- 2. 江西昊宇重工有限公司,瑞金,342500
- 3. 中国运载火箭技术研究院,北京宇航系统工程研究所,北京,100076
- 折叠
摘要
通过电阻缝焊成功在SUS304上制备出铁基非晶涂层,并测量制备过程的温度热循环.基于Comsol采用电-热耦合的有限元方法,重点分析制备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制备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,铁基非晶涂层制备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(RSW),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 fabricating 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 RSW.The simulation results indicate that the high current density area mainly exists at certain points at the bottom of the powder layer directly under the electrode wheel,and the adjacent areas centered on the left and right ends of the contact surface between the electrode wheel and the powder layer.The temperature field during the fabricating 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 fabrication process is stable,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'.
关键词
电阻缝焊/电热耦合/数值模拟/铁基非晶涂层Key words
resistance seam welding/electro-thermal coupling/numerical simulation/Fe-based amorphous coating引用本文复制引用
基金项目
国家自然科学基金资助项目(52205375)
江西省基金项目(20232BAB204049)
江西省基金项目(20224BAB214010)
江西省基金项目(jxsq2019201118)
出版年
2024
NETL
NSTL
万方数据