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近年来,随着汽车的高级化,用户对汽车车身的涂漆外观质量特别关心,强烈要求其具有象镜面那样(能清晰映出影象)的光亮度。光亮度受涂漆技术的影响很大,但作为母材钢板的表面粗糙度的影响也占很大的比例。钢板表面越光滑,涂漆后的光亮度越高。但其反面是,冲压时对润滑油的保持性变坏,冲压成型中往往使模具卡住而擦伤钢板表面,所以又要求钢板具有适度的表面粗糙度。若把钢板表面粗糙度分解成波长不同的各种波进行检查时,则发现波长短的粗糙度在涂漆后由于涂料的均匀化效应而消失了,只残余下波长长的粗糙度。因而,为了提高光亮度,减少波
In recent years, with the advancement of automobiles, users are particularly interested in the quality of painted exterior appearances of automobile bodies, and they are strongly urged to have the brightness of mirrors (which can clearly reflect the image). Brightness is greatly influenced by the technology of painting, but the influence of the surface roughness as a base material steel also accounts for a large proportion. The smoother the steel surface, the higher the brightness after painting. However, the opposite is that when the stamping of the deterioration of the retention of lubricants, stamping mold often stuck and scratched the surface of the steel, it also requires a moderate degree of surface roughness of steel. If the surface roughness of the steel is decomposed into various waves of different wavelengths for inspection, the short wavelength is found to disappear due to the homogenization effect of the paint after painting, leaving only the roughness of the lower wavelength. Therefore, in order to improve brightness, reduce the wave