The Effect of Cobalt on Wear behavior of Cemented Carbide cutting tools for machining of Titanium alloy

2018 ◽  
Vol 5 (2) ◽  
pp. 7678-7684 ◽  
Author(s):  
M. Chandrashekar ◽  
K.V. Sreenivasa Prasad
Keyword(s):  
Titanium Alloy ◽  
Wear Behavior ◽  
Cutting Tools ◽  
Cemented Carbide

Wear Behaviour of Two Different Cemented Carbide Grades in Turning 316 L Stainless Steel

2018 ◽  
Vol 941 ◽  
pp. 2367-2372 ◽  
Author(s):  
Sara Saketi ◽  
Ulf Bexell ◽  
Jonas Östby ◽  
Mikael Olsson
Keyword(s):  
Grain Size ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Wear Behavior ◽  
Cutting Tools ◽  
Cemented Carbide ◽  
Wear Behaviour ◽  
Binder Phase ◽  
Mechanical Wear ◽  
Cutting Insert

Cemented carbides are the most common cutting tools for machining various grades of steels. In this study, wear behavior of two different cemented carbide grades with roughly the same fraction of binder phase and carbide phase but different grain size, in turning austenitic stainless steel is investigated. Wear tests were carried out against 316L stainless steel at 180 and 250 m/min cutting speeds.The worn surface of cutting tool is characterized using high resolution scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX), Auger electron spectroscopy (AES) and 3D optical profiler.The wear of cemented carbide in turning stainless steel is controlled by both chemical and mechanical wear. Plastic deformation, grain fracture and chemical wear is observed on flank and rake face of the cutting insert. In the case of fine-grained, the WC grains has higher surface contact with the adhered material which promotes higher chemical reaction and degradation of WC grains, so chemical wear resistance of the composites is larger when WC grains are larger. The hardness of cemented carbide increase linearly by decreasing grain size, therefore mechanical wear resistance of the composites is larger when WC grains are smaller.

scholarly journals Study on the Cutting Performance of Micro Textured Tools on Cutting Ti-6Al-4V Titanium Alloy

Micromachines ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 137 ◽  
Author(s):  
Kairui Zheng ◽  
Fazhan Yang ◽  
Na Zhang ◽  
Qingyu Liu ◽  
Fulin Jiang
Keyword(s):  
Surface Roughness ◽  
Titanium Alloy ◽  
Cutting Force ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cutting Performance ◽  
Cemented Carbide ◽  
Feed Force ◽  
Cemented Carbide Tools

Titanium alloys are widely used in various fields, but their machinability is poor because the chip would easily adhere to the tool surface during cutting, causing poor surface quality and tool wear. To improve the cutting performance of titanium alloy Ti-6Al-4V, experiments were conducted to investigate the effect of micro textured tool on the cutting performances. The cemented carbide tools whose rake faces were machined with line, rhombic, and sinusoidal groove textures with 10% area occupancy rates were adopted as the cutting tools. The effects of cutting depth and cutting speed on feed force and main cutting force were discussed based on experimental results. The results show that the cutting force produced by textured tools is less than that produced by non-textured tools. Under different cutting parameters, the best cutting performance can be obtained by using sinusoidal textured tools among the four types of tools. The wear of micro textured tools is significantly lower than that of non-textured tools, due to a continuous lubrication film between the chip and the rake face of the tool that can be produced because the micro texture can store and replenish lubricant. The surface roughness obtained using the textured tool is better than that using the non-textured tool. The surface roughness Ra can be reduced by 35.89% when using sinusoidal textured tools. This study is helpful for further improving the cutting performance of cemented carbide tools on titanium alloy and prolonging tool life.

An Investigation of Forces and Tool Wear in Milling of Ni3Al-Base Superalloy

2016 ◽  
Vol 861 ◽  
pp. 32-37
Author(s):  
Gao Qun Liu ◽  
Zheng Cai Zhao ◽  
Yu Can Fu ◽  
Zhi Liang Yan
Keyword(s):  
Tool Wear ◽  
Wear Behavior ◽  
Cutting Tools ◽  
Cutting Parameters ◽  
Milling Process ◽  
Cemented Carbide ◽  
Depth Of Cut ◽  
Ticn Coating ◽  
Radial Depth ◽  
Tools Wear

This article studies the forces and tool wear behavior in the milling process of Ni3Al-base superalloys with cemented carbide cutting tools. The effects of cutting parameters on the machinability of these superalloys are experimentally discussed. The results indicate that the forces increase with the increase of the axial depth of cut, the radial depth of cut and the feedrate per tooth. The cutting tools wear rapidly in the milling process of Ni/Al superalloys. The cemented carbide cutting tool with TX coating is more suitable for machining Ni/Al superalloys when compared with the tool with TiCN coating.

Wear Mechanism of PVD TiAlN Coated Cemented Carbide Tool in Dry Turning Titanium Alloy TC4

2013 ◽  
Vol 652-654 ◽  
pp. 2200-2204 ◽  
Author(s):  
Bao Lin Wang ◽  
Xing Ai ◽  
Zhan Qiang Liu ◽  
Ji Gang Liu
Keyword(s):  
Titanium Alloy ◽  
Wear Mechanism ◽  
Energy Dispersive Spectrometer ◽  
Cutting Tools ◽  
Cemented Carbide ◽  
No Oxidation ◽  
Cemented Carbide Tool ◽  
Cemented Carbide Tools ◽  
Coated Cemented Carbide ◽  
Oxidation Wear

This paper presents investigations on turning TC4 alloy with PVD TiAlN coated cemented carbide inserts. The turning test was conducted with variable cutting speeds ranging from 80 to 120 m/min. Wear surfaces of the cutting tools are analyzed to study the wear mechanism of PVD TiAlN coated cemented carbide tools in turning of titanium alloy TC4. Scanning Electron Microscope (SEM) and Energy Dispersive Spectrometer( EDS) analyses by wear maps indicated that the wear of coated cemented carbide tools was caused by adhesion, coating delamination and mechanical fatigue. The analysis of EDS indicated no oxidation wear generated during the machining. The excellent chemical stability and oxidation resistance performance of TiAlN coating made contribution to prevent oxidation wear.

Wear behavior and cutting performance of nanostructured hard coatings on cemented carbide cutting tools in hard milling

2013 ◽  
Vol 62 ◽  
pp. 215-222 ◽  
Author(s):  
Halil Çalışkan ◽  
Cahit Kurbanoğlu ◽  
Peter Panjan ◽  
Miha Čekada ◽  
Davorin Kramar
Keyword(s):  
Wear Behavior ◽  
Cutting Tools ◽  
Hard Coatings ◽  
Cutting Performance ◽  
Cemented Carbide ◽  
Hard Milling

Study of the effect of surface laser texture on tribological properties of cemented carbide materials

2020 ◽  
Vol 234 (6-7) ◽  
pp. 993-1006
Author(s):  
Na Zhang ◽  
Fazhan Yang ◽  
Fulin Jiang ◽  
Guohua Liu
Keyword(s):  
Titanium Alloy ◽  
Friction Coefficient ◽  
Cutting Tools ◽  
Surface Texturing ◽  
Potential Method ◽  
Cemented Carbide ◽  
Textured Surface ◽  
Low Friction ◽  
Dry Cutting ◽  
Groove Texture

Surface texturing has become a potential method to obtain a low friction coefficient under dry/lubricated conditions for different mechanical product surfaces. The mechanism of friction and wear reduction from a micro-texture on the surface of cemented carbide cutting tools was investigated by dry cutting a titanium alloy. Three kinds of micro-textures, namely, line, sinusoidal and rhombic grooves, with different area occupancy rates were produced by a laser on the cemented carbide surface. Experiments and finite element simulation of ABAQUS were used to investigate the tribological characteristics of micro-textured cemented carbide. The results indicated that the line-textured cemented carbide with an area occupancy rate of 10% showed a low friction coefficient of 0.076, which is approximately 34% of the non-textured sample. Few adhesives appeared on the textured surface, while a large number of adhesives were attached to the smooth surface after 30 min of dry friction between the cemented carbide and the titanium alloy balls. Moreover, among the three textures, the line-groove texture has the smallest friction coefficient and a good anti-wear effect. The results show that the existence of a groove texture can effectively reserve the wear debris, reduce the bond wear and weaken the furrow effect.

Wear Behavior of Carbide Inserts in Face Milling TA19 Alloy

2012 ◽  
Vol 426 ◽  
pp. 339-343 ◽  
Author(s):  
Qiu Lin Niu ◽  
X.J. Cai ◽  
Zhi Qiang Liu ◽  
Ming Chen ◽  
Qing Long An
Keyword(s):  
Titanium Alloy ◽  
Wear Behavior ◽  
Cutting Speed ◽  
Aircraft Engine ◽  
Face Milling ◽  
Depth Of Cut ◽  
Cnc Milling ◽  
Crater Wear ◽  
Stable Conditions ◽  
Carbide Inserts

As a typical high strength material, titanium alloy Ti-6Al-2Sn-4Zr- 2Mo-0.1Si (TA19) is used to manufacturing the compressor power-brake of aircraft engine and the aircraft skin. All the machining experiments were carried out on a CNC-milling center under the stable conditions of cutting speed, feed rate, and depth of cut. The performance and wear mechanisms of coated- and uncoated carbide tools have been investigated in this paper to evaluate the machinability of TA19 in face milling. The three tools used were PVD-TiN+TiAlN, CVD-TiN+Al2O3+TiCN and uncoated carbide inserts. The results indicated that PVD coating had the best performance than other tool materials in milling titanium alloy TA19, and the cutting force and the wear value were the smallest than that for CVD-coated and uncoated tools. The failure types of PVD-, CVD- and uncoated inserts were the crater wear and micro tipping; the crater wear and tipping; tipping. Abrasive wear and adherent wear were the predominant mechanism of PVD-TiN+TiAlN carbide insert in face milling TA19 alloy. For CVD- and uncoated carbide, adherent wear was predominant.

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