Changes in Mechanical Properties of Cast Iron GTW 35-04 under the Surface Parameter during Drilling

Author:

Jurko Jozef1

Affiliation:

1. Technical University in Košice

Abstract

The problem of drilling holes with diameter D=2 to 8 mm resides in the fact that 35 to 40% of these holes do not comply with prescribed requested requirements. This study also includes an analysis of accompanying phenomena in the cutting zone by measuring some selected parameters. The basic hypothesis of this article focuses on the study changes in mechanical properties of cast iron GTW 35-04 under surface finish when drilling. The problem of drilling holes with diameter D=2 to 8 mm resides in the fact that 20 to 25% of these holes do not comply with prescribed requested requirements, [, [. This article presents the results of experiments focusing on the study of the damage process in helical drills with diameter d=5.5 mm when drilling into cast iron GTW 35-04. This study also includes an analysis of accompanying phenomena in the cutting zone by measuring some selected parameters. Experimental results were verified in the production of holes in products for the computers.

Publisher

Trans Tech Publications, Ltd.

Reference12 articles.

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2. M. Džupon, M. Gajdoš, J. Jurko, M. Ferdinandy, D. Jakubeczyová, Plastic Deformation Around Holes Drilled in Austenitic Steel 1. 4301. Chemické listy, Vol. 105, (S), pp.606-608, ISSN 0009-2770, (2011).

3. J. Gašparová, J. Šugárová, D. Kalincová, Study of microstructure and formed part wall thicness changes after metal spinning. In Development of mechanical engineering as a tool for the enterprise logistics progress : science report : project CII-PL-0033-01-0506, Poznan University of Technology, ISBN 83-89873-28-1, pp.187-192, (2006).

4. J. Jurko: Verification of surface finish as an indicator of machinability in turning steel X6Cr16Ni10MoTiN, Advanced Materials Research. Vol. 291-294, pp.2987-2990, ISSN 1022-6680, (2011).

5. J. Jurko: The use of TiAlN coated carbide tool when finish drilling of stainless steel X4Cr17Ni8TiN. Applied Mechanics and Materials, Vol. 39, pp.369-374, ISSN 1660-9336, (2010).

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