Wear mechanisms of WC-Co cemented carbide tools and PVD coated tools used for shearing Cu-alloy wire in zipper production

Wear ◽  
2019 ◽  
Vol 420-421 ◽  
pp. 96-107 ◽  
Author(s):  
J. Heinrichs ◽  
H. Mikado ◽  
A. Kawakami ◽  
U. Wiklund ◽  
S. Kawamura ◽  
...  
Keyword(s):  
Wear Mechanisms ◽  
Cemented Carbide ◽  
Alloy Wire ◽  
Cu Alloy ◽  
Coated Tools ◽  
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.

Study on the Coated Tool Wear Mechanism of High Speed Milling Ni-Base Superalloy GH625

2012 ◽  
Vol 723 ◽  
pp. 311-316
Author(s):  
Wei Wang ◽  
Ming Hai Wang ◽  
Xiao Peng Li
Keyword(s):  
Wear Mechanisms ◽  
High Speed ◽  
High Speed Milling ◽  
Coated Tools ◽  
Coated Tool ◽  
Tool Wear Mechanism ◽  
Cemented Carbide Tools ◽  
Tools Wear ◽  
Coated Cemented Carbide ◽  
Base Superalloy

The experiments of high speed milling Ni-base superalloy GH625 by using two types of the coated cemented carbide tools at home and abroad, using the scanning electron microscopy (SEM) to observe the tools wear morphology, analyzing the worn surface elements distribution by energy spectrum analysis (EDS) and the main wear mechanisms of the tools. The results show that adhesion, oxidation and diffusion are the main wear mechanisms in initiative wearing stage of the domestic coated tools. And the main wear mechanisms of the imported coated tools are adhesion, oxidation, diffusion and coating spallation.

scholarly journals Investigation of Cutting Temperature during Turning Inconel 718 with (Ti,Al)N PVD Coated Cemented Carbide Tools

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1281 ◽  
Author(s):  
Jinfu Zhao ◽  
Zhanqiang Liu ◽  
Qi Shen ◽  
Bing Wang ◽  
Qingqing Wang
Keyword(s):  
Physical Properties ◽  
Inconel 718 ◽  
Great Influence ◽  
Cutting Temperature ◽  
Cemented Carbide ◽  
Machining Process ◽  
Coated Tools ◽  
Cemented Carbide Tools ◽  
Coated Cemented Carbide ◽  
Thermo Physical Properties

Physical Vapor Deposition (PVD) Ti1−xAlxN coated cemented carbide tools are commonly used to cut difficult-to-machine super alloy of Inconel 718. The Al concentration x of Ti1−xAlxN coating can affect the coating microstructure, mechanical and thermo-physical properties of Ti1−xAlxN coating, which affects the cutting temperature in the machining process. Cutting temperature has great influence on the tool life and the machined surface quality. In this study, the influences of PVD (Ti,Al)N coated cemented carbide tools on the cutting temperature were analyzed. Firstly, the microstructures of PVD Ti0.41Al0.59N and Ti0.55Al0.45N coatings were inspected. The increase of Al concentration x enhanced the crystallinity of PVD Ti1−xAlxN coatings without epitaxy growth of TiAlN crystals. Secondly, the mechanical and thermo-physical properties of PVD Ti0.41Al0.59N and Ti0.55Al0.45N coated tools were analyzed. The pinning effects of coating increased with the increasing of Al concentration x, which can decrease the friction coefficient between the PVD Ti1−xAlxN coated cemented carbide tools and the Inconel 718 material. The coating hardness and thermal conductivity of Ti1−xAlxN coatings increased with the increase of Al concentration x. Thirdly, the influences of PVD Ti1−xAlxN coated tools on the cutting temperature in turning Inconel 718 were analyzed by mathematical analysis modelling and Lagrange simulation methods. Compared with the uncoated tools, PVD Ti0.41Al0.59N coated tools decreased the heat generation as well as the tool temperature to reduce the thermal stress generated within the tools. Lastly, the influences of Ti1−xAlxN coatings on surface morphologies of the tool rake faces were analyzed. The conclusions can reveal the influences of PVD Ti1−xAlxN coatings on cutting temperature, which can provide guidance in the proper choice of Al concentration x for PVD Ti1−xAlxN coated tools in turning Inconel 718.

The Effect of Grain Size and Cobalt Content on the Wear of Ultrafine Cemented Carbide Tools

2014 ◽  
Vol 875-877 ◽  
pp. 1344-1351
Author(s):  
Jian Bing Cheng ◽  
Si Qin Pang ◽  
Xi Bin Wang ◽  
Xi Bin Wang ◽  
Chen Guang Lin
Keyword(s):  
Grain Size ◽  
Tool Wear ◽  
Tool Life ◽  
Wear Mechanism ◽  
Wear Mechanisms ◽  
High Strength Steels ◽  
Cobalt Content ◽  
Cemented Carbide ◽  
Cemented Carbide Tools ◽  
Cutting Speeds

This work contributes to a better understanding of wear mechanisms of ultrafine cemented carbide cutting tools used in turning operation of superalloy and high strength steels at high cutting speeds. The main objective of this work is to verify the influence of grain size and the cobalt content of ultrafine cemented carbide tools on tool life and tool wear mechanism. The main conclusions are that grain size and the cobalt content of ultrafine cemented carbide tools strongly influence tool life and tool wear involve different mechanisms. The wear mechanisms of different grain size and the cobalt content of ultrafine cemented carbide tools observed on the rake face at these conditions were adhesion and notch, at the end of tool life, adhesion was the main wear mechanism at higher cutting speeds.

Study of wear mechanisms of cemented carbide tools during machining of single-phase niobium

Wear ◽  
2020 ◽  
Vol 450-451 ◽  
pp. 203244 ◽  
Author(s):  
Mike Olsson ◽  
Filip Lenrick ◽  
Rachid M'Saoubi ◽  
Henrik Larsson ◽  
Andreas Markström ◽  
...  
Keyword(s):  
Wear Mechanisms ◽  
Single Phase ◽  
Cemented Carbide ◽  
Cemented Carbide Tools

Machinability of bimetallic bearings using cemented carbide tools: evaluation of the wear mechanisms

2005 ◽  
Vol 159 (3) ◽  
pp. 435-444 ◽  
Author(s):  
Dirley Carlos Corrêa ◽  
Wisley Falco Sales ◽  
Sandro Cardoso Santos ◽  
Ernani Sales Palma
Keyword(s):  
Wear Mechanisms ◽  
Cemented Carbide ◽  
Cemented Carbide Tools

Wear Behavior of Ti(N,C)-Al2O3 Coated Cemented Carbide Tools during Milling Ti2AlNb-Based Alloy

2013 ◽  
Vol 589-590 ◽  
pp. 361-365
Author(s):  
Xiao Di Ma ◽  
Jiu Hua Xu ◽  
Wen Feng Ding ◽  
Dong Sheng Lv ◽  
Yu Can Fu
Keyword(s):  
Wear Mechanisms ◽  
Failure Modes ◽  
Wear Behavior ◽  
Cutting Speed ◽  
Base Material ◽  
Cutting Parameters ◽  
Cemented Carbide ◽  
Nickel Base ◽  
Cemented Carbide Tools ◽  
Coated Cemented Carbide

Ti2AlNb-based alloy is regarded as lightweight high-temperature structural material, which is expected to replace the nickel-base super alloy due to its low density, high elastic modulus, strength retention at elevated temperature, outstanding oxide resistance. However, these excellent properties also make Ti2AlNb to be difficult-to-cut material. In this paper, the milling experiment of Ti2AlNb alloy was carried out using Ti(N,C)-Al2O3 coated cemented carbide tools. SEM and EDS analysis was utilized to observe the worn tools to determine the tool failure modes and wear mechanisms. Tool life when milling Ti2AlNb was short and heavily dependent on the cutting parameters. During milling, coating material of the tool was separated rapidly from the base material. When the cutting speed exceeded 100m/min, serious cracks appeared on the tool surface. Thermal fatigue, adhesive and attrition were the predominant wear mechanisms of the coated tools.

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