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本方法是用3微米的金刚砂纸和手提式电动仪(类似于手钻)磨光和抛光加热炉管道表面。然后将抛光表面进行化学浸蚀或电解浸蚀。在手提显微镜下观察显微组织并利用
The method is to burnish and polish the furnace tube surface using 3 micron emery paper and a hand-held electrometer (similar to a hand drill). The polished surface is then chemically or electrolytically etched. Microscopes were observed under a hand-held microscope and utilized