Principle Analysis of Electromagnetic Shielding Performance on Surface of Electric Spark Texturing
Surface texturing features are formed on the inner surface of key electrical components processed by electric discharge machine tools,in terms of electromagnetic shielding technology for high-speed train traction converters,it is a new approach to improve electromagnetic shielding effectiveness.This paper starts with the e-lectromagnetic shielding mechanism,combined with the surface roughness characteristics of the shielding body.study its electromagnetic shielding principle and influencing factors.The results indicate that:Electromagnetic waves propagate to the shielding material after surface treatment,multiple reflections and absorption of electro-magnetic waves caused by the superposition of surface pits and protrusions,the electromagnetic shielding effect on the surface of the textured shielding body depends on its degree of energy attenuation,the degree of energy at-tenuation is determined by the morphology characteristics of the textured surface pits and protrusions.
万方数据
维普
