アルミニウム切削における仕上面に関する二三の考察

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  • Considerations on roughness machined surface of aluminum
  • アルミニウム セッサク ニ オケル シアゲメン ニ カンスル ニサン ノ コウサツ

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In general, on Aluminum, it is difficult to obtain well finished surface by cutting operatlon. This may be considered to be derived from following reasons; 1) Frictional resistance at tool-chip contact surface is more appreciable than the other metals because of being small cutting ratio (r_c=t/t', where t; cutting depth, t'; chip thickness) compared with other metal cutting. 2) And also with rising of cutting temperature, the platic flow and frictional resistance are increased. Therefore, to get the well finished surface by cutting, it is necessary to smooth the tool face and to lower the cutting temperature by which plastic flow and frictional resistance are reduced.

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