アルミニウム-珪素系合金の正面切削に関する研究

抄録

Facing tests with a sintered carbide have been conducted on three sorts of aluminium-silicon cast alloys, of which silicon contents are 13%, 17% and 23%, in order to investigate the feasibility of facing test which is frequently applied as a quick tool life test for ferrous materials. In addition to it, the other machinability characteristics of aluminium-silicon cast alloy are studied.
The, tool life formula in facing, which was proposed by Brandsma on facing with a high speed steel tool, has been experimentally examined on 23% silicon aluminium alloy and has not been justified for this material. Thus, a new tool wear formula has been proposed for facing of aluminium alloys, and has been experimentally verified to agree fairly well. The tool wear is hardly recognized in facing 13% silicon aluminium alloy, whereas in the case of 17% and 23% silicon aluminium alloys recognizable wear occurs at higher cutting speeds, and, at the same time, the cutting force, especially, the traversing force, increases greatly. When the tool wear increases, the cutting temperature rise to nearly the recrystallization temperature of the work material.