Investigation of micro-textured cutting tools used for face turning of alloy 718 with high-pressure cooling
Artikel i vetenskaplig tidskrift, 2019

There is an increasing demand to improve the service life of cutting tools during machining of heat resistant superalloys (HRSA). Various studies showed that textured cutting tools improved the tribological properties and reduced cutting forces, temperature, and tool wear. Surface texturing can be seen as a futuristic design to improve the performance of the cutting tool and to increase productivity. However, only limited research has been conducted in machining superalloys with textured inserts and high-pressure coolant. In this work, three different micro texture designs on both rake and flank face are investigated in combination with high-pressure coolant in machining Alloy 718. Due to better tool life predictability, carbide cutting tools are used in machining components made from superalloys. However, the disadvantage is that machining can only be done at lower cutting speed/feed rate/depth of cut with high tool wear rates. The experimental investigation using different tool wear analysis methods showed that the combination of a cylindrical dimple on the rake and the square pyramid texture on the flank surface improved the wear resistance of the tool. An increase in tool life of about 30% was achieved as compared with a regular insert for the investigated cutting conditions. Different levels of adhering workpiece material were observed on the rake face of textured tools. Furthermore, the chip backside showed imprints from the tool textures. The tool textures on the rake face have influenced the tool-chip friction conditions during cutting.

Alloy 718

Next generation cutting tools

Face turning

High-pressure coolant

Tool wear

Textured inserts

Författare

Nageswaran Tamil Alagan

Högskolan Väst

Pavel Zeman

Ceske Vysoke Uceni Technicke v Praze

Philipp Hoier

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Tomas Beno

Högskolan Väst

Uta Klement

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Journal of Manufacturing Processes

1526-6125 (ISSN)

Vol. 37 606-616

Strategiskt forskningssamarbete mellan Chalmers och Högskolan Väst inom Produktionsteknik, (PROSAM) Fas 1&2

Västra Götalandsregionen, 2016-01-01 -- 2017-12-31.

Västra Götalandsregionen, 2014-01-01 -- 2015-12-31.

Ämneskategorier

Tribologi

Bearbetnings-, yt- och fogningsteknik

Styrkeområden

Produktion

DOI

10.1016/j.jmapro.2018.12.023

Mer information

Senast uppdaterat

2019-07-29