ＡＺ９１マグネシウム合金鋳物の旋削加工中における切りくず燃焼防止
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概要
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The chip in the magnesium alloy cutting process often burns, when a chip thickness decreases with the stopping of tool feed at the end of cutting, or the thin chip is formed at the finishing. In this paper, the prevention and the causes of ignition and combustion of chip in turning of AZ91 magnesium alloy casting has been studied in terms of the surface properties of chip, the records of cutting force, cutting temperature and the sharpness of edge. The results obtained are as follows. It becomes clear that temperature increase with an oxidation reaction on the chip surface affects most for the combustion. Therefore, the chip combustion occurs depending mainly on the ratio S/V (surface area per unit volume). The safety cutting without the chip combustion is performed at satisfying the above ratio under one over two hundred (1/200 mm) on the cutting condition and by the using of the bits with sharp edge such as cBN or diamond tool.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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