Article In: orcid, scopus, cienciavitae

Long-term performance of stone-cutting tools

International Journal of Refractory Metals and Hard Materials

L.G. Rosa; J.C. Fernandes; P.M. Amaral — 2015 — Elsevier

Key information

Authors:

L.G. Rosa (Luís Manuel Guerra da Silva Rosa); J.C. Fernandes (José Jorge Lopes da Cruz Fernandes); C.A. Anjinho (Carlos Alberto Gancho Anjinho); A. Coelho (Adriano Manuel Sá Coelho); P.M. Amaral (Pedro Miguel Gomes Abrunhosa Amaral)

Published in

January 1, 2015

Abstract

This research work addresses the long-term performance − up to 5 square meters of area of cut − of diamond-impregnated segmented discs used for hard stone cutting. Comparative studies among “geometrically equal” tools were carried out through the assessment of their cutting behaviour, under real conditions, using the same type of stone (Porriño granite). Several types of plots are used to monitor the performance of the tool, e.g. graphs of resultant force (generated by the contact between the tool and the stone slab) versus area of cut; and graphs of tool wear (weight loss) versus area of cut. Six discs were studied. The performance of each disc was observed along the cutting operation involving a considerably high area of cut, e.g. 625 linear meters of cut using an average cutting depth of 8 mm (equivalent to 5 square meters of area of cut). Different types of matrices were used for manufacturing new segments for the cutting discs (the diamond content in the segments was kept constant). Matrices containing: Co + bronze (50wt%Co + 50 wt% of a 90Cu-10Sn bronze); Co + bronze + 2.5 wt% graphite; Co + bronze + 5.0 wt% graphite; Co + bronze + 10 wt% WC; and Co + bronze + 20 wt% WC, were produced and their behaviour was compared to that of a standard disc available in the market and commonly used by the stone industry for cutting granite. Interesting alterations in cutting regimes were observed during the long-term tests. Evolution of resultant force and tool wear rate as a function of the area of cut is analysed, revealing that an increase in the resultant force is associated to a decrease in the wear rate of the tool, and vice versa.

Publication details

Authors in the community:

Publication version

AO - Author's Original

Publisher

Elsevier

Link to the publisher's version

https://www.sciencedirect.com/science/article/pii/S0263436814001097

Title of the publication container

International Journal of Refractory Metals and Hard Materials

First page or article number

276

Last page

282

Volume

49

Issue

1

DOI

10.1016/j.ijrmhm.2014.05.021

WoS (Web of Science)

WOS:000352667100035

Fields of Science and Technology (FOS)

materials-engineering - Materials engineering

Keywords

  • Diamond tools
  • Stone machining
  • Tungsten carbide
  • Graphite
  • Tool wear

Publication language (ISO code)

eng - English

Alternative identifier (URI)

http://www.scopus.com/inward/record.url?eid=2-s2.0-84933038001&partnerID=MN8TOARS

Rights type:

Restricted access