並列タイトル等Researches on Cutting Performance of High Speed Tool Steel Produced by Powder Metallurgy (1st Report) : On Cutting Edge and Turned Surface
一般注記In order to study the applicability of PM high speed tool steel (high speed steel produced by powder metallurgy) to cutting for precision finishing, the state of tool failures and the finished surface were discussed after facing with a conventional lathe. ESR high speed tool steel (high speed steel produced by electro-slag refining) was also used for the purpose of comparison. Among the factors affecting the cutting edge of tools and the turned surface, the depth of cut, cutting speed, tool feed and back rake angle of cutting were chosen to be investigated, the results of which will be described here. The main results obtained are as follows; (1) The state of top or edge wear, chipping or spalling of the tool edge and the degree of adhered built-up edge or metal debris on the cutting edge are less in the case of PM high speed tool steel than in ESR high speed tool steel during cutting. (2) Therefore it is possible to form a finished surface of the geometrical shape nearly determined by the tool feed and roughness of the cutting edge. (3) It is assumed that the size and distribution of the particles of carbide near the cutting edge are closely correlated with the roughness of the cutting edge which is supposed to affect the reproducibility of the cutting edge on to the turned surface and the duration of its sharpness.
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）