冷轧薄板表面粗糙度微观形貌的测试分析

对喷丸毛化、电火花毛化、激光毛化三种工艺处理后的轧辊轧制的冷轧薄板，由GBS-60杯突试验机进行冲压成形，用扫描电镜进行了观察分析，对比其变形前、后的微观表面粗糙度形态特征。结果表明，扫描图像与测试的粗糙度参数值相吻合，并能形象、直观地反映出粗糙度的均匀性；从变形后的扫描图像可以分析钢板的塑性变形行为。

TEST AND ANALYSIS ON SURFACE ROUGHNESS AND MICRO-PROFILE OF COLD-ROLLED STEEL SHEET

There are three kinds of cold-rolled steel sheet with different surface, as they were rolled by three types of cold-rolls whose surface were textured respectively by shot blasting, electro-discharge and laser. Using GBS-60 cupping test press to stamp the above-mentioned steel sheets, and the surface roughness and micro-profile of sheets before and after stamping were surveyed by SEM. Make a comparison between the surface roughness and micro-profile before and after deformation show that SEM image are in good accordance with measured roughness, and the distribution of roughness can be observed directly. The plastic deformation of the sheets can be analyzed by SEM images.