摘要
为了减少感应加热设备零件中自身的损耗,通过对铜和不锈钢两种材料在交变磁场中吸收能量的分析发现:两种不同电阻率材料吸收的电磁能量存在一个临界尺寸,在临界尺寸以上时,铜吸收的能量小于不锈钢吸收的能量,在临界尺寸以下时,铜吸收的能量大于不锈钢吸收的能量。同时,临界尺寸不是一个定值,而是和磁场方向,电阻率,频率等因素相关,是两种材料相比较而存在的。可用垂直于磁场方向的截面尺寸与电流透入深度的比值来描述。
In the induction heating equipment spare parts, in order to reduce itself power loss, the two kinds of materials copper and stainless steel in absorb energy in an alternating magnetic field were analyzed. The results show that there is a critical size in absorb energy of two different resistivity materials, copper absorb energy is less then stainless steel above the critical size, and copper absorb energy is greater than stainless steel under the critical size. At the same time, the critical size is not a constant value, it is related to the direction of magnetic field, resistivity and frequency. It can be described by the ratio of the section dimensions perpendicular to the direction of the magnetic field and the current penetration depth.
出处
《铸造技术》
CAS
北大核心
2015年第12期2990-2993,共4页
Foundry Technology
关键词
感应加热设备
金属材料吸热
电流透入深度
临界尺寸
induction heating equipment
heating metallic materials
current penetration
critical size
