带钢厚度对纵向磁通感应加热影响研究

The Effect of strip thickness on longitudinal magnetic flux induction heating

采用电磁-热耦合数值分析方法在物理参数相同的条件下,分别对2,4,6 mm带钢进行纵向磁通感应加热数值模拟.计算结果显示:带钢厚度越大,加热的最终温度越高,带钢与边部温差越大.但是在加热初始阶段,厚度较薄的带钢升温较快.而通过与透入深度的对比,不同深度下采用变频率加热,即可实现变频加热.

Using the numerical analysis and electromagnetic-thermal coupling method under the condition of same physical parameters, the numerical simulation of the strip steel of 2 mm, 4 mm, 6 mm in thickness was carried out for magnetic flux induction heating in lon- gitudinal direction . Calculation results show that the bigger the thickness of the strip steel is, the higher the final heating temperature is, and the greater is the difference in temperature between strip steel and edge. But in the initial phase of the heating process, thinner strip steel was heated up faster. And with the depth of penetration compared, the frequency heating will be realized through heating by changing the frequency under different depth.