Failure of Cemented Carbide Tools When Executing Intermittent Cuts

1979 ◽  
Vol 101 (4) ◽  
pp. 391-396 ◽  
Author(s):  
S. M. Bhatia ◽  
P. C. Pandey ◽  
H. S. Shan
Keyword(s):  
Experimental Results ◽  
Cemented Carbide ◽  
Operating Speed ◽  
Tool Failure ◽  
Premature Failure ◽  
Operating Range ◽  
Tool Edge ◽  
Cemented Carbide Tools ◽  
Safe Operating ◽  
Intermittent Cutting

Premature failure of the cutting edge is a major problem associated with the application of cemented carbide tools in intermittent cutting operations. In such cases, unlike in continuous cutting, the tool edge fails due to fracture, well before the permissible limit of wear is approached. This paper reports some of the findings pertaining to the behavior of cemented carbide tools when used in interrupted cuts on a lathe. Based on the type of tool failure observed, the operating speed and feed range has been divided into four regions and the mode of tool failure in each region has been discussed. From the experimental results obtained, it is possible to specify a safe operating range for cemented carbide tools when executing intermittent cuts.

Failure of cemented carbide tools in intermittent cutting

1979 ◽  
Vol 1 (3) ◽  
pp. 148-152 ◽  
Author(s):  
S.M. Bhatia ◽  
P.C. Pandey ◽  
H.S. Shan
Keyword(s):  
Cemented Carbide ◽  
Cemented Carbide Tools ◽  
Intermittent Cutting

The Investigation of the Enhancement Mechanisms of the Oxide Treatment on Cemented Carbide Tools

1975 ◽  
Vol 97 (1) ◽  
pp. 112-118 ◽  
Author(s):  
S. K. Naik ◽  
N. P. Suh
Keyword(s):  
Surface Structure ◽  
Metal Cutting ◽  
Eutectic Phase ◽  
Experimental Results ◽  
Cemented Carbide ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cemented Carbide Tools ◽  
Solid Piece

The mechanisms responsible for enhancement of the metal cutting properties of cemented carbide tools during oxide treatments are investigated. The reaction of individual phases present in cemented carbide tools with various oxides was analyzed experimentally under temperature-pressure conditions previously employed for the oxide treatment. The change in the surface structure and the formation of new phases were determined by means of X-ray diffraction, oxidation experiments, and thermodynamic analyses. The experimental results show that during the oxide treatment such carbides as TiC and ZrC, which are chemically more stable than WC, form on the surface of WC. It was also found that a small percentage of oxides mixed in the eutectic phase of Co-WC stabilizes the eutectic phase, thus preventing its adhesion to a solid piece of oxides.

Evaluation of Chip-Breakers Manufactured by Ultrashort Laser Pulses in Cemented Carbide Tools

2017 ◽  
Author(s):  
Marcelo Bertolete Carneiro ◽  
Patrícia Alves Barbosa ◽  
Ricardo Samad ◽  
NIlson Vieira ◽  
Wagner de Rossi ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Cemented Carbide ◽  
Cemented Carbide Tools ◽  
Ultrashort Laser

Effect of tool wear on the surface integrity of Inconel 718 in face milling with cemented carbide tools

Wear ◽  
2021 ◽  
pp. 203752
Author(s):  
A.R.F. Oliveira ◽  
L.R.R. da Silva ◽  
V. Baldin ◽  
M.P.C. Fonseca ◽  
R.B. Silva ◽  
...  
Keyword(s):  
Tool Wear ◽  
Surface Integrity ◽  
Inconel 718 ◽  
Face Milling ◽  
Cemented Carbide ◽  
Cemented Carbide Tools

Wear behaviour of cemented carbide tools in dry machining of aluminium alloy

Wear ◽  
2005 ◽  
Vol 259 (7-12) ◽  
pp. 1177-1189 ◽  
Author(s):  
G. List ◽  
M. Nouari ◽  
D. Géhin ◽  
S. Gomez ◽  
J.P. Manaud ◽  
...  
Keyword(s):  
Aluminium Alloy ◽  
Cemented Carbide ◽  
Wear Behaviour ◽  
Dry Machining ◽  
Cemented Carbide Tools

scholarly journals Wear mechanisms of uncoated and coated cemented carbide tools in machining lead-free silicon brass

Wear ◽  
2017 ◽  
Vol 376-377 ◽  
pp. 143-151 ◽  
Author(s):  
Volodymyr Bushlya ◽  
Daniel Johansson ◽  
Filip Lenrick ◽  
Jan-Eric Ståhl ◽  
Fredrik Schultheiss
Keyword(s):  
Wear Mechanisms ◽  
Cemented Carbide ◽  
Lead Free ◽  
Free Silicon ◽  
Cemented Carbide Tools ◽  
Coated Cemented Carbide

CVD-Diamantwerkzeuge mit SiC-Zwischenschicht/CVD-Diamond coated tools with SiC-interlayer

2019 ◽  
Vol 109 (11-12) ◽  
pp. 857-861
Author(s):  
E. Uhlmann ◽  
E. Bath ◽  
J. Gäbler ◽  
M. Höfer
Keyword(s):  
Adhesive Strength ◽  
Diffusion Barrier ◽  
Cvd Diamond ◽  
Cemented Carbide ◽  
Coating Process ◽  
Research Project ◽  
Coated Tools ◽  
Pre Treatment ◽  
Cemented Carbide Tools ◽  
Cutting Experiments

Der Cobalt-(Co)-Anteil in Hartmetallen diffundiert während des Diamantbeschichtungsprozesses in die Diamantschicht und mindert deren Haftfähigkeit. Siliciumcarbid-(SiC)-Zwischenschichten können als Diffusionsbarriere für Cobalt dienen und die konventionelle Ätzvorbehandlung der Substrate ersetzen. Im Rahmen einer Forschungsarbeit werden Beschichtungsprozesse mit SiC-Zwischenschicht entwickelt, diese Schichtsysteme auf verschiedene Substrate aufgebracht und durch Zerspanungsuntersuchungen bewertet.   The cobalt (Co) content in cemented carbide tools diffuses into the diamond layer during the coating process and reduces its adhesive strength. Siliciumcarbid-(SiC)-interlayers can serve as a diffusion barrier for cobalt and replace the conventional etching pre-treatment of blanks. In a research project different coating processes with SiC-interlayer are developed, the coating systems are applied to different substrates and evaluated in cutting experiments.

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