scholarly journals Wear reduction on cutting inserts by additional internal cooling of the cutting edge

2018 ◽  
Vol 21 ◽  
pp. 518-524 ◽  
Author(s):  
Friedrich Bleicher ◽  
Manuel Reiter
Keyword(s):  
Cutting Edge ◽  
Internal Cooling ◽  
Cutting Inserts ◽  
Wear Reduction

scholarly journals Machining of Iron-Carbon Alloys by the Use of Poly-Crystalline Diamond Cutting Inserts with Internal Cooling

2018 ◽  
Vol 2 (3) ◽  
pp. 57 ◽  
Author(s):  
Manuel Reiter ◽  
Jens Brier ◽  
Friedrich Bleicher
Keyword(s):  
Wear Behavior ◽  
Cutting Tools ◽  
Tool Material ◽  
Internal Cooling ◽  
Diamond Cutting ◽  
Diffusion Effects ◽  
Cutting Inserts ◽  
Abrasive Cutting ◽  
Poly Crystalline Diamond ◽  
Insight Into

Poly-crystalline diamond (PCD) is an extremely tough, synthetically produced cutting tool material, which offers outstanding capabilities concerning wear behavior in abrasive cutting environments. Currently, the primary application of PCD cutting tools is the machining of non-ferrous materials, as the diamond’s carbon high affinity towards iron causes diffusion effects while cutting steel with rising temperature. This effect significantly reduces tool life. To lower the occurring temperature of the cutting process, and therefore avoid the reaction of carbon and iron, a thermal functionalization of the cutting inserts has been investigated. The results give insight into making PCD cutting tools economically usable for the machining of iron-carbon materials.

Performance Evaluation of TiAlN-PVD Coated Inserts for Machining Ti-6Al-4V under Different Cooling Strategies

2013 ◽  
Vol 685 ◽  
pp. 68-75 ◽  
Author(s):  
Salman Pervaiz ◽  
Ibrahim Deiab ◽  
Basil Darras ◽  
Amir Rashid ◽  
Mihai Nicolescu
Keyword(s):  
Flank Wear ◽  
Cutting Speed ◽  
Cutting Edge ◽  
Machined Surface ◽  
Cutting Inserts ◽  
Low Levels ◽  
Coated Carbide ◽  
Cutting Experiments ◽  
Cutting Speeds ◽  
Scanning Electron

Titanium alloys are labeled as difficult to materials because of their low machinability rating. This paper presents an experimental study of machining Ti-6Al-4V under turning operation. All machining tests were conducted under dry, mist and flood cooling approaches by using a TiAlN coated carbide cutting inserts. All cutting experiments were conducted using high and low levels of cutting speeds and feed rates. The study compared surface finish of machined surface and flank wear at cutting edge under dry, mist and flood cooling approaches. Scanning electron microscopy was utilized to investigate the flank wear at cutting edge under various cooling approaches and cutting conditions. Investigation revealed that TiAlN coated carbides performed comparatively better at higher cutting speed.

Influence of Cutting Edge Radius on the Wear Resistance of Powder Metallurgy High-Speed Steel Milling Inserts

2006 ◽  
Vol 220 (3) ◽  
pp. 383-387 ◽  
Author(s):  
J Rech ◽  
M-J Schaff
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Powder Metallurgy ◽  
High Speed ◽  
High Speed Steel ◽  
Cutting Edge ◽  
Wear Behaviour ◽  
Cutting Inserts ◽  
Cutting Speeds ◽  
Scanning Electron

The wear behaviour of powder metallurgy high-speed steel (PM-HSS) milling inserts is investigated experimentally. Cutting inserts with different cutting edge radii tested at various feed rates and cutting speeds were examined. The radii have been obtained either by microsandblasting or by honing. The initiation and progress of the tool wear was analysed with scanning electron microscopy (SEM) of the cutting edges. The experimental results exhibit quantitatively the effect of tool radius on the performance of milling inserts. A radius on the cutting edge prevents fast and unpredictable wear, and can lead to a great improvement of the tool life.

Reduction of built-up edge formation in machining Al- and cast iron hybrid components by internal cooling of cutting inserts

CIRP Annals ◽  
2016 ◽  
Vol 65 (1) ◽  
pp. 97-100 ◽  
Author(s):  
Friedrich Bleicher ◽  
Christoph Pollak ◽  
Jens Brier ◽  
Anton Siller
Keyword(s):  
Cast Iron ◽  
Internal Cooling ◽  
Cutting Inserts

Cutting Inserts with a Discrete Cutting Edge for Rough Turning

2019 ◽  
Vol 39 (11) ◽  
pp. 955-958
Author(s):  
A. A. Malikov ◽  
S. Ya. Khludov ◽  
M. O. Boriskina ◽  
V. D. Artamonov
Keyword(s):  
Cutting Edge ◽  
Cutting Inserts ◽  
Rough Turning

Machining Al2O3/6061Al Metal Matrix Composites Using Coated Tungsten Carbide Inserts

2002 ◽  
Author(s):  
Abdul B. Sadat
Keyword(s):  
Tungsten Carbide ◽  
Metal Matrix Composites ◽  
Feed Rate ◽  
Metal Matrix ◽  
Cutting Edge ◽  
Depth Of Cut ◽  
Matrix Composites ◽  
Cutting Test ◽  
Cutting Inserts ◽  
Carbide Inserts

An experimental procedure is used to machine 20 vol.% Al2O3/6061Al metal matrix composites using coated tungsten carbide cutting inserts in a finish turning operation. The turning operations were carried out at various cutting speeds and feed rates, at a constant depth of cut, and with the application of a coolant. Tool wear lengths at two locations, at the flank of the primary cutting edge and at the flank of the nose of the tool were measured for each cutting test after the removal of a predetermined volume of material. It was found that the wear lengths at both locations of the tool increased with a decrease in feed rate due to the increase in cutting time as the feed rate decreased. It was also found that for a given speed and feed rate the wear on the flank of the nose was higher than that of the primary cutting edge. This was attributed possibly to the presence of the built-up edge on the rake face of the tool. Surface roughness, generally, increased with an increase in cutting time that was explained in terms of an increase in nose wear length as the cutting time was increased.

Tool-Swinging Cutting of Binderless Tungsten Carbide

2010 ◽  
Vol 139-141 ◽  
pp. 727-730
Author(s):  
Zhi Yu Zhang ◽  
Ji Wang Yan ◽  
Tsunemoto Kuriyagawa
Keyword(s):  
Tungsten Carbide ◽  
Flank Wear ◽  
Cutting Edge ◽  
Ultraprecision Machining ◽  
Polishing Process ◽  
Rotation Center ◽  
Hard And Brittle Materials ◽  
Wear Reduction ◽  
Cutting Point ◽  
Shed Light

Tool wear reduction is very important in cutting of ultra hard and brittle materials. In this paper, a tool-swinging cutting method was applied to reduce the wear of round-nosed diamond tools in cutting of tungsten carbide (WC). In this method, the geometrical center of the cutting edge was adjusted to be in coincidence with the rotation center of the B-axis table, and thus the cutting point could be changed along the cutting edge by swinging the tool about the B-axis center. Experimental results showed that the width of the flank wear land was greatly reduced compared to that in the conventional cutting. This work can shed light on ultraprecision machining WC parts without or with less need for subsequent polishing process.

scholarly journals The Influence of Surface Treatment of PVD Coating on Its Quality and Wear Resistant

Coatings ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 439 ◽  
Author(s):  
Tomas Zlamal ◽  
Ivan Mrkvica ◽  
Tomas Szotkowski ◽  
Sarka Malotova
Keyword(s):  
Surface Roughness ◽  
Wear Resistance ◽  
Cutting Tool ◽  
Milling Process ◽  
Cutting Edge ◽  
Life Test ◽  
Pvd Coating ◽  
Cutting Inserts ◽  
Cutting Edge Preparation ◽  
Edge Preparation

The article deals with a determination of the influence of a cutting edge preparation on the quality and wear resistance of coated cutting tools. Cutting inserts made from a sintered carbide with a deposited layer of PVD coating were selected for measurement. Non-homogeneity caused by the creation of droplets arises in the application layer during the process of applying the coating by the PVD method. These droplets make the surface roughness of the PVD coating worse, increase the friction and thereby the thermal load of the cutting tool as well. Also, the droplets could be the cause of the creation and propagation of droplets in the coating and they can cause quick cutting tool wear during machining. Cutting edge preparations were suggested for the improvement of the surface integrity of deposited layers of PVD coating, namely the technology of drag finishing and abrasive jet machining. After their application, the areal surface roughness was measured on the surface of coated cutting inserts, the occurrence of droplets was tracked and the surface structure was explored. A tool-life test of cutting inserts was carried out for verification of the influence of surface treatment on the wear resistance of cutting inserts during the milling process. The cutting inserts with a layer of PVD coatings termed as samples A, B, and C were used for the tool-life test. The first sample, A, represented the coating before the application of cutting edge preparations and samples B and C were after the application of the cutting edge preparation. A carbon steel termed C45 was used for the milling process and cutting conditions were suggested. The visual control of surface of cutting inserts, intensity of wear and occurrence of thermal cracks in deposited PVD layers were the criterion for the evaluation of the individual tests.

scholarly journals EVALUATION OF MECHANICAL RESISTANCE BY THE FINITE ELEMENTS METHOD OF A MACHINING TOOL WITH INTERNAL COOLING CHANNELS

2021 ◽  
Vol 20 (2) ◽  
pp. 41
Author(s):  
P. H. P. França ◽  
L. R. R. Da Silva
Keyword(s):  
Cutting Edge ◽  
Mechanical Resistance ◽  
Internal Cooling ◽  
The Finite Element Method ◽  
Turning Process ◽  
Flow Conditions ◽  
Cooling Channels ◽  
Tool Stress ◽  
Influence Of Temperature On ◽  
Maximum Stresses

In this work, the strength of machining hardware for the modified turning process with internal channels that circulates water as a coolant through a closed system was studied. As output parameters, the mechanical strength at the cutting edge and in the grooves was studied. In addition, input parameters were considered different force and thermal flow conditions generated in the tool's cutting edge. All analyzes performed: Influence of temperature on tool stress, comparison of the maximum stresses in the tool channels with the cutting edge, and the influence of coolant stress in the internal channels were performed using the finite element method by the Ansys® Workbench software 19.2. The main conclusions were that the parameter that most influences the tension exerted on the tools is the force and that, according to the force exerted, the tool will not resist the tension efforts.    

Sign in / Sign up

Export Citation Format

Share Document