Microstructure Induced Wear Mechanisms of PVD-Coated Carbide Tools during Dry Drilling of Newly Produced ADI

2015 ◽  
Vol 651-653 ◽  
pp. 1271-1276 ◽  
Author(s):  
Anil Meena ◽  
Mohamed El Mansori
Keyword(s):  
Wear Mechanisms ◽  
Cutting Tools ◽  
Experimental Studies ◽  
Cutting Speed ◽  
Microstructural Characteristics ◽  
Machine Material ◽  
Dry Drilling ◽  
Wear Mode ◽  
Coated Carbide ◽  
Coated Carbide Tools

Near-net shape austempered ductile iron (ADI) castings can be considered as a significant economic advantage to the increasing industrial demand for cost and weight efficient materials. However, due to microstructure induced inherent properties, ADI is considered as hard to machine material. The present paper thus investigates the interaction between the microstructural characteristics of ADI and wear mechanisms of PVD-coated carbide tools. The inherent properties of ADI materials are the function of its microstructural characteristics (retained austenite volume content and its carbon content, ferritic cell size, etc.) which can be controlled by the austempering parameters. Experimental studies of dry drilling of different ADI materials with the PVD-coated carbide tools were carried out at a cutting speed of 60 m/min and at a feed of 0.15 mm/rev. The wear mechanisms of the cutting tools were studied by using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis techniques. The obtain results revealed the evolution of crater wear as the main wear mode. In addition, it provides the key findings aims to correlating the machining characteristics of ADI with its microstructure and production conditions.

Comparative Experimental Research on Cutting Superalloy Used New Coated Carbide Tools

2010 ◽  
Vol 33 ◽  
pp. 173-176
Author(s):  
X.Y. Wang ◽  
S.Q. Pang ◽  
Q.X. Yu
Keyword(s):  
Tool Wear ◽  
Tool Life ◽  
Experimental Research ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Life Testing ◽  
Processing Efficiency ◽  
Comparative Tests ◽  
Coated Carbide ◽  
Coated Carbide Tools

The aim of this work is to investigate the machinability of new coated carbide cutting tools that are named C7 plus coatings under turning of superalloy GH2132. This achieved by analysis of tool life at different cutting conditions .Investigations of tool wear and tool life testing are intended to establish T-V formulas, and then analyzed the characteristics of coating . Through a series of comparative tests, Using TiAlN coatings as the contrast materialthe results show that the new coating tools that are named C7 plus coatings are suitable for cutting superalloy GH2132. The cutting speed and processing efficiency can be increased effectively.

Wear Mechanisms of Coated Carbide Tools in Dry Boring of Titanium Alloys

2012 ◽  
Vol 499 ◽  
pp. 186-191
Author(s):  
Zong Yang Zhang ◽  
Zhan Qiang Liu ◽  
Xing Ai ◽  
B.L. Wang
Keyword(s):  
Titanium Alloys ◽  
Wear Mechanism ◽  
Feed Rate ◽  
Wear Mechanisms ◽  
Cutting Speed ◽  
No Oxidation ◽  
Depth Of Cut ◽  
Coated Carbide ◽  
Oxidation Wear ◽  
Coated Carbide Tools

This paper deals with an experimental research on the wear mechanism of coated carbide tools in dry boring of the titanium alloys TC11 which are commonly used for aero-engines. The wear mechanism of coated tool inserts was investigated at various combinations of cutting speed, feed rate, and depth of cut. Analysis carried out with the SEM suggests that adhesive wear and coating delamination are the dominant wear mechanisms under low speed and feed rate and depth of cut; while chipping and breakage are the dominant wear mechanisms for the combinations of high cutting speed, feed rate, and depth of cut. There was no observation of oxygen existing based on the analysis of SEM which indicated no oxidation wear generated during the boring machining. The excellent chemical stability of TiAlN coating and oxidation resistance performance made contribution to prevent oxidation wear. Another reason was that boring temperature was lower than oxidation temperature.

Experimental Studies on Machinability of 14 wt.% of SiC Particle Reinforced Aluminium Alloy Composites

2012 ◽  
Vol 723 ◽  
pp. 94-98 ◽  
Author(s):  
Sheng Qin ◽  
Xiao Jiang Cai ◽  
Yu Sheng Zhang ◽  
Qing Long An ◽  
Ming Chen
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
End Milling ◽  
Experimental Studies ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Matrix Composites ◽  
Coated Carbide ◽  
Coated Carbide Tools ◽  
Aluminium Metal

Since metal matrix composites (MMCs) have increasing applications in industries, this paper presents an experimental investigation on machinability of SiCp reinforced aluminium metal matrix composites. 14 wt.% of SiCp reinforcement addition composite was studied in end milling using CVD coated carbide tools under different cutting parameters. By experimental results, the relationships of cutting force and surface roughness with cutting speed and feed were discussed. Some defects concerning surface topography such as ploughed furrow, pits, matrix tearing, etc. were examined by SEM.

Examining the machinability of 38MnVS6 microalloyed steel, cooled in different mediums after hot forging with the coated carbide and ceramic tool

2021 ◽  
pp. 095440622098449
Author(s):  
Barış Özlü ◽  
Halil Demir ◽  
Mustafa Türkmen ◽  
Süleyman Gündüz
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
Microalloyed Steel ◽  
Cutting Tools ◽  
Experimental Studies ◽  
Hot Forging ◽  
Cutting Speed ◽  
Depth Of Cut ◽  
Ceramic Tool ◽  
Coated Carbide

In this study, the effect of the microstructure, hardness, and cutting speed on main cutting force and surface roughness in medium carbon microalloyed steel cooled in different mediums after hot forging, was investigated. As-received sample, which was not hot forged, and the samples cooled in the sand, air, oil, and polymerized water after hot forging were used for the experimental studies. The machinability tests were performed via turning method by using coated carbide and coated ceramic cutting tools with five cutting speed (120, 150, 180, 210, and 240 m/min), constant feed rate (0.04 mm/rev), and constant depth of cut (0.6 mm). The microstructure examinations of the samples were carried out and their hardness values were determined. Also, the wear of cutting tools were examined with scanning electron microscope. In the experimental study, it was revealed that the microstructure, hardness and cutting speed had a significant effect on the surface roughness values of the samples cooled in dissimilar environments following forging. Moreover, the samples cooled in air and polymerized water, whose hardness increased depending on the increase in the cooling rate, had the highest cutting force after machining by using the coated carbide and ceramic tool.

Optimum Cutting Speed for Machining Stainless Steel with Coated Carbide Tools

2006 ◽  
Vol 7 (3-4) ◽  
pp. 201-206
Author(s):  
Ahsan Ali Khan, ◽  
Roshaliza Bt Hamidon, ◽  
Muhariyanti Bt Che Mat,
Keyword(s):  
Stainless Steel ◽  
Cutting Speed ◽  
Optimum Cutting ◽  
Coated Carbide ◽  
Coated Carbide Tools

Wear mechanism of a coated carbide tool in cryogenic machining of AISI 4340

2019 ◽  
Vol 72 (4) ◽  
pp. 509-514 ◽  
Author(s):  
Shalina Sheik Muhamad ◽  
Jaharah A. Ghani ◽  
Che Hassan Che Haron ◽  
Hafizal Yazid
Keyword(s):  
Wear Mechanisms ◽  
Cutting Speed ◽  
Optical Microscope ◽  
Carbide Tool ◽  
Cryogenic Machining ◽  
Content Type ◽  
Coated Carbide Tool ◽  
Adhesion Wear ◽  
Coated Carbide ◽  
Aisi 4340

Purpose The purpose of this study is to investigate wear mechanisms of a multi-layered TiAlN/AlCrN-coated carbide tool during the milling of AISI 4340 steel under cryogenic machining. Design/methodology/approach The wear progression was measured using a toolmaker microscope and an optical microscope. Later, a field emission scanning electron microscope and energy-dispersive X-ray analysis were used to investigate the wear mechanisms in detail. Findings A comprehensive analysis revealed that the main causes of tool wear mechanisms were abrasion and adhesion wear on the flank face. Originality/value The investigations presented in this paper may be used by the machining industry to prolong the tool life at higher cutting speed by the application of liquid nitrogen.

Cutting Performance and Failure Mechanisms of Coated Carbide Tools in Face Milling Powder Metallurgy Nickel-Based Superalloy

2012 ◽  
Vol 497 ◽  
pp. 94-98
Author(s):  
Yang Qiao ◽  
Xiu Li Fu ◽  
Xue Feng Yang
Keyword(s):  
Cutting Force ◽  
Feed Rate ◽  
Failure Mechanisms ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Face Milling ◽  
Nickel Based Superalloy ◽  
Coated Carbide ◽  
Coated Carbide Tools

Powder metallurgy (PM) nickel-based superalloy is regarded as one of the most important aerospace industry materials, which has been widely used in advanced turbo-engines. This work presents an orthogonal design experiments to study the cutting force and cutting temperature variations in the face milling of PM nickel-based superalloy with PVD coated carbide tools. Experimental results show that with the increase of feed rate and depth of cut, there is a growing tendency in cutting force, with the increase of cutting speed, cutting force decreases. Among the cutting parameters, feed rate has the greatest influence on cutting force, especially when cutting speed exceeds 60m/min. With the increase of all the cutting parameters, cutting temperature increases. However the cutting temperature increases slightly as the increasing of feed rate. Tool failure mechanisms in face milling of PM nickel-based superalloy are analyzed. It is shown that the breakage and spalling on the cutting edge are the most dominate failure mechanisms, which dominates the deterioration and final failure of the coated carbide tools.

Wear mechanisms of coated carbide tools

1982 ◽  
Vol 9 (1) ◽  
pp. 60-75 ◽  
Author(s):  
P. A. Dearnley ◽  
E. M. Trent
Keyword(s):  
Wear Mechanisms ◽  
Coated Carbide ◽  
Coated Carbide Tools

Study on Wear Properties and Mechanisms of Coated Carbide Tools in Dry Turning of 300M Steel

2011 ◽  
Vol 314-316 ◽  
pp. 1142-1145
Author(s):  
Zong Yang Zhang ◽  
Xing Ai ◽  
Zhan Qiang Liu ◽  
Min Wang
Keyword(s):  
Cutting Speed ◽  
No Oxidation ◽  
Depth Of Cut ◽  
Wear Properties ◽  
Workpiece Material ◽  
Dry Turning ◽  
300M Steel ◽  
Coated Carbide ◽  
Oxidation Wear ◽  
Coated Carbide Tools

This paper deals with an experimental research on wear properties and mechanisms of coated carbide tools in dry turning of 300M steel which are widely used to manufacture the central spindle, wheel gear, aerofoil fastener and so on. Based on Makarow’s theory, the minimum surface wear rate hs = 2.88 μm and the optimal cutting speed v = 200 m/mim were attained under the condition of the feed rate f = 0.1 mm/r and the depth of cut ap = 0.15 mm. Analysis carried out with the SEM suggests that adhesion of workpiece material and chipping are dominant wear mechanisms. There was no observation of oxygen existing based on the analysis of EDS which indicated no oxidation wear generated during the turning machining.

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