基于热力耦合模型与原料退火模拟实验的立体卷铁心退火工艺优化  

Optimization of Three-dimensional Coil Core Annealing Process Based on Thermal Mechanical Coupling Model and Raw Material Annealing Simulation Experiment

作　　者：张坤鹏 赵鹏飞 豆瑞锋 黎先浩 周良 温治 ZHANG Kunpeng;ZHAO Pengfei;DOU Ruifeng;LI Xianhao;ZHOU Liang;WEN Zhi(School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Shougang Zhixin Qian'an Electromagnetic Materials Co.,Ltd.,Qian'an 064400,China;Beijing Key Laboratory of Energy Saving and Emission Reduction of Metallurgical Industry,Beijing 100083,China;TBEA Xinjiang Transformer Co.,Ltd.,Changji 831100,China)

机构地区：[1]北京科技大学能源与环境工程学院,北京100083 [2]北京科技大学冶金与生态工程学院,北京100083 [3]首钢智新迁安电磁材料有限公司,河北迁安064400 [4]冶金工业节能减排北京市重点实验室,北京100083 [5]特变电工股份有限公司新疆变压器厂,新疆昌吉831100

出　　处：《热加工工艺》2023年第14期150-156,共7页Hot Working Technology

摘　　要：退火热处理是减小立体卷铁心(卷铁心)残余应力和降低空载损耗的必要手段。实际退火过程中,无法实时测量卷铁心内部温度和应力分布,难以准确制定退火工艺。根据卷铁心的材料特性和卷取工艺,建立了卷铁心的各向异性热力耦合模型,开展了卷铁心原料的退火模拟实验,获得了取向硅钢片的最优退火周期;基于卷铁心温度和实验结果,优化了退火周期,使退火时间缩短了约600 min;分析了应力、塑性应变与炉温间的关联性,并给出了卷铁心退火工艺的优化方案。Annealing is a necessary means to reduce the residual stress and no-load loss of three-dimensional coil core.In the actual annealing process,it is impossible to measure the temperature and stress distribution of 3D coil core in real time and difficult to formulate the annealing process accurately.Due to the material characteristics and coiling process of 3D coil core,an orthotropic thermal mechanical coupling model of 3D coil core was established.Annealing simulation experiments were carried out on the raw materials of 3D coil core,and the optimal annealing cycle of grain-oriented silicon steel was obtained.The annealing cycle of 3D coil core was optimized according to the coil cone temperature and experiment results,and the annealing time was shortened by about 600 min.The correlation between stress,plastic strain and furnace temperature was analyzed.Finally,the optimization scheme of 3D coil core annealing process was given.

关 键 词：热力耦合模型 退火模拟实验 取向硅钢 立体卷铁心 退火工艺 

分 类 号：TG156.2[金属学及工艺—热处理]