On the machinability of Al-Si-Cu alloy for die casting
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概要
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As Al-Si-Cu alloys, which are used in many fields for the die casting aluminium alloy, that is, copper silumin, apt to be embrittled, especially to grow the hardspot and get worse the machinability when the iron content exceeds 2%, so much attention is paid to the iron content in casting. On the other hand, if the iron content is too little, it is said that the durability of the movable die is very affected because the die is liable to be seized. In this paper, the alloys, which are equivalent to JIS ADC12 and ADC13 and have four sorts of iron content in the range of 0.31-2.05%, are cast as the test specimen for the purpose to examine the influence of iron content on the machinability of alloy. 9.5mmφ rods are made for the turning specimen by the cold chamber 80CT type die casting machine (Toshiba Machine Tool Co.)The high speed steel (SKH4) side tool has been used and the side rake angle is changed in the range of 0°-30°. And the RAMO-type high speed precision lathe has been used in the turning conditions as follows: the cutting speed is 75m/min, the cutting depth is 1mm, the feed is changed in the range of 0.06-0.25mm/rev and the dry cutting method is gone. The influence of iron content on the machinability of alloy is discussed by the cutting force, the unit net horsepower, the roughness of turning surface and others in this paper.
- 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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