1. Surface-layer quality after high-speed turning of hard material
- Author
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T. G. Nasad, S. B. Venig, I. E. Kiryushin, D. V. Terin, M. O. Stepanova, and D. E. Kiryushin
- Subjects
Materials science ,Quality (physics) ,Machined surface ,Mechanical Engineering ,Powder metallurgy ,Surface layer ,Surface finish ,Composite material ,Lubricant ,Indentation hardness ,Industrial and Manufacturing Engineering - Abstract
In the high speed turning of materials that are hard to machine, it is difficult to obtain a surface layer of optimal roughness and optimal structure–phase com position. In the present work, we study the surface defects, roughness, and microhardness of S49 powder steel (42–45 HRC). The test conditions are as follows: cutting depth t = 0.1 mm; supply s = 40 mm/min; no lubricant is employed. The cutting speed varies from the tradi tional value v = 60 m/min to v = 450 m/min. In Fig. 1, we plot the relation between the roughness Rz of the machined surface and the cutting speed v.
- Published
- 2014