摘要:
用火焰原子吸收光谱法(FAAS)测定硬质合金混合料及碳化物在制粉工艺中,由球磨过程带入杂质Fe、Co、Ni的变化可知,使用硬质合金球磨筒及球,Co的增量是Fe的3~7倍。使用不锈钢球磨筒时,Fe的增量为0.10%~0.40%。破碎碳化物时,若使用不锈钢球磨筒和硬质合金球,研磨时间超过48h后,各元素的增量分别为:Fe>0.4%,Co>0.2%,Ni>0.1%。
Abstract:
It is known from the content change of inclusions Fe, Co and Ni during ball milling in the manufacture of hard alloy mixtures and carbides determined flame atomic absorption spectrum method (FAAS) that in case of using hard alloy ball milling cylinder and balls, the increment content of Co is 3~7 times that of Fe. The increment content of Fe is 0.1%~0.4% in case of using stainless steel ball milling cylinder. During crushing of carbides, if stainless steel ball milling cylinder and hard alloy balls are used and milling time is over 48h, the increments are as follows:Fe>0.1%, Co>0.2%, Ni>0.1%.
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