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使用过的旧金相砂纸经下述方法处理,可重新利用。方法是:先用破布将旧砂纸表面的金属粉末擦去,再用脱脂棉蘸上“盐酸氯化铁”溶液沿一个方向进行擦试,然后用水亦沿一个方向冲洗(尽量不要把背面弄湿)。经上述处理后的砂纸放至干燥处凉干即可使用。
The used old metallographic sand paper can be reused as follows. The method is as follows: firstly wipe the metal powder on the surface of the old sandpaper with a rag and rub the cotton wool solution in a direction with a cotton wool, and then rinse the water in one direction (try not to put the back Wet). After the above treatment of sandpaper put dry place can be used to dry.