Accession Number:

AD0248405

Title:

MACHINING OF HEAT-RESISTANT ALLOYS

Descriptive Note:

Corporate Author:

LIBRARY OF CONGRESS WASHINGTON DC AEROSPACE TECHNOLOGY DIV

Personal Author(s):

Report Date:

1960-11-14

Pagination or Media Count:

2.0

Abstract:

Candidate of Technical Sciences V. N. Verezub of the Kharkov 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 mmin feed, 0.2 to 0.8 mmrev 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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE