Research on surface characteristics of non-traditional finishing

INTRODUCTION Finishing is a kind of machining technology for greatly increasing the surface quality of a machined object while maintaining stable precision and im-proving the machining precision grade.Finishing is the last procedure for most parts and is an important manufacturing technology.Finishing can be divided into two kinds of technologies.One is traditional finishing which util-izes mechanical processes such as grinding,abrading,polishing,etc.;the other is non-traditional finishin…     

弹丸焦与其它石油焦微观形貌之分析对比

由于渣油劣质化和苛刻的操作条件,在生成石油焦的过程中夹杂出现弹丸焦的几率越来越大。为了更加准确地判断石油焦的种类及理化性质差异,选取典型针状焦、海绵焦、弹丸焦为研究对象,采用电镜扫描、偏光显微等方法进行特性表征,所得图像比以往文献的更加清晰可辨。微观形貌分析较外观形态等宏观性质的分析更能准确全面反映弹丸焦与其它石油焦的特性差异。将扫描电镜、偏光显微镜图片结合起来可以较为清晰地区分各种焦炭的微观外貌差异,为深入研究焦炭（特别是弹丸焦）的微观性质及生焦历程提供了分析判断的参考依据。