MACHINING OF HEAT-RESISTANT ALLOYS
Abstract
Candidate of Technical Sciences V. N. Verezub of the Khar'kov Aviation Institute carried out a series of experiments on the turning of the lowmachinability, heat-resistant EI607A alloy (Inconel X-550) both by co ventional methods and by applying current input into h cutting zone. Highly rigid 165 and 1D62 lathes were used for the experiments. The lathes were equipped with bent tools with T15K6 carbide tips (titanium (over) carbide, 15%; tungsten carbide, 79%; cobalt, 6%). Tool-shank cross section was 25 x 25 sq mm. Cutting rates and tool geometry were as follows: cutting speed, 10 to 50 m/min; feed, 0.2 to 0.8 mm/rev; depth of cut, 2 mm; side cuttingedge angle, 50 degrees; end cutting-edge angle, 8 degrees; back rake angle, 7 degrees; relief angle, 12 degrees; nose radius, 1.5 mm; angle of inclination of the cutting edge, 0 degrees; edge land, 0.2 to 0.4 mm; negative rake of edge land, -5 degrees. An investigation was made on the effect of current input in roughing operations on tool life, surface finish, and tool temperature. Flank wear of 0.35 mm was accepted as the dullness criterion. Graphs were plotted for the relationships (with and without current input) of tool life vs cutting speed, tool life vs feed, surface roughness vs cutting speed at various feeds, tool temperature vs machining time, and tool temperature vs cutting speed and feed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 14, 1960
- Accession Number
- AD0248405
Entities
Organizations
- Library of Congress