Tool wear characteristics in high-speed milling of graphite using a coated carbide micro endmill

2008 ◽  
Vol 223 (3) ◽  
pp. 267-277 ◽  
Author(s):  
L Zhou ◽  
C Y Wang ◽  
Z Qin
Keyword(s):  
Tool Wear ◽  
High Speed ◽  
High Speed Milling ◽  
Wear Characteristics ◽  
Coated Carbide

The effect of monolayer TiCN-, AlTiN-, TiAlN-and two layers TiCN + TiN- and AlTiN + TiN-coated cutting tools on tool wear, cutting force, surface roughness and chip morphology during high-speed milling of Ti6Al4V titanium alloy

2016 ◽  
Vol 232 (7) ◽  
pp. 1273-1286 ◽  
Author(s):  
Emel Kuram
Keyword(s):  
Surface Roughness ◽  
Titanium Alloy ◽  
Tool Wear ◽  
Cutting Force ◽  
High Speed ◽  
Cutting Tools ◽  
Chip Morphology ◽  
High Speed Milling ◽  
Ti6al4v Titanium Alloy ◽  
Coated Carbide

Tool coatings can improve the machinability performance of difficult-to-cut materials such as titanium alloys. Therefore, in the current work, high-speed milling of Ti6Al4V titanium alloy was carried out to determine the performance of various coated cutting tools. Five types of coated carbide inserts – monolayer TiCN, AlTiN, TiAlN and two layers TiCN + TiN and AlTiN + TiN, which were deposited by physical vapour deposition – were employed in the experiments. Tool wear, cutting force, surface roughness and chip morphology were evaluated and compared for different coated tools. To understand the tool wear modes and mechanisms, detailed scanning electron microscope analysis combined with energy dispersive X-ray of the worn inserts were conducted. Abrasion, adhesion, chipping and mechanical crack on flank face and coating delamination, adhesion and crater wear on rake face were observed during high-speed milling of Ti6Al4V titanium alloy. In terms of tool wear, the lowest value was obtained with TiCN-coated insert. It was also found that at the beginning of the machining pass TiAlN-coated insert and at the end of machining TiCN-coated insert gave the lowest cutting force and surface roughness values. No change in chip morphology was observed with different coated inserts.

Effect of Pick Feed on Machining Characteristic of Up Cutting in the High-Efficient Machining by Small Diameter Radius End Mill

2019 ◽  
Vol 825 ◽  
pp. 31-38
Author(s):  
Hisaaki Nakai ◽  
Takekazu Sawa ◽  
Masahiro Anzai
Keyword(s):  
Tool Wear ◽  
High Speed ◽  
Flank Wear ◽  
Small Diameter ◽  
Hardened Steel ◽  
End Mill ◽  
High Speed Milling ◽  
Improve Efficiency ◽  
High Efficient ◽  
Coated Carbide

In order to improve efficiency of high speed milling, effects of pick feeds of up cutting and down cutting on tool wear and processing characteristics were investigated after cutting pre-hardened steel NAK 55 by TiAlN-coated carbide radius end mill. Flank wear of the tools after up cutting was less than down cutting when the pick feed was smaller than 0.1 mm, which tendency changed when the pick feed was larger than 0.3 mm.

Experimental Study on Carbide Tool Wear Characteristics Test for High Speed Finish Milling Aluminum Blades

2010 ◽  
Vol 33 ◽  
pp. 454-457
Author(s):  
Xue Hui Wang ◽  
Ming Jun Feng ◽  
Zhi Qiang Gao ◽  
Ming Jun Dai
Keyword(s):  
Experimental Study ◽  
Tool Wear ◽  
High Speed ◽  
Flank Wear ◽  
Al Alloy ◽  
High Speed Machining ◽  
Carbide Tool ◽  
Cutting Efficiency ◽  
High Speed Milling ◽  
Wear Characteristics

According to the condition of the high speed milling aluminum (al) blades, the wear characteristics of the carbide tool was observed, whose wear characteristics mainly were flank wear, micro-tipping, exfoliation and so on. With the increase of the cutting time, the tool wear became larger according to the increment of the spindle speed. At the condition of the same feed per tooth, applying high speed finish milling for al alloy blades whose cutting efficiency increased remarkably, surface roughness decreased, high speed machining was adopted in real applications to achieve high economical benefits.

Study on the Tool Wear of Coated Carbide Tool in High Speed Milling Titanium Alloy

2014 ◽  
Vol 800-801 ◽  
pp. 526-530 ◽  
Author(s):  
Shu Cai Yang ◽  
Yu Hua Zhang ◽  
Quan Wan ◽  
Jian Jun Chen ◽  
Chuang Feng
Keyword(s):  
Titanium Alloy ◽  
Tool Wear ◽  
Tool Life ◽  
High Speed ◽  
Carbide Tool ◽  
High Speed Milling ◽  
Coated Carbide Tool ◽  
Fluid Environment ◽  
Coated Carbide ◽  
Coated Carbide Tools

The milling experiments were carried out using TiAlN and PCD coated carbide tools in high speed milling Ti6Al4V to compare and analyze tool wear and tool life of the two kinds of coating carbide tools. In addition, the effect of cooling and lubricating on tool wear is also studied. The results showed that fluid environment is not suitable for milling Ti6Al4V. PCD coating carbide tool can effectively increase the life of tool in high speed milling of Ti6Al4V.

Research on Wear Mechanism in High-Speed Milling GH4169 with Coated Carbide Tool

2014 ◽  
Vol 900 ◽  
pp. 605-611 ◽  
Author(s):  
Wei Wei Liu ◽  
Hao Chen ◽  
Feng Li
Keyword(s):  
Tool Wear ◽  
High Speed ◽  
Main Tool ◽  
Element Distribution ◽  
High Speed Milling ◽  
Diffusion Wear ◽  
Micro Cracks ◽  
Coated Tool ◽  
Nickel Base ◽  
Coated Carbide

This paper mainly discussed the problems that the serious tool wear,the short tool life of difficult-to-machine nickel base superalloys GH4169,the experiment was processed to obtain the tool wear morphology of GH4169 with a new developed PVD-TiAlN coated carbide tool.The morphology of tool wear was observed by scanning electron microscopy (SEM),and element distribution of tool surface was analyzed by energy spectrum analyzer (EDS),And then through the above two aspects,analyses the main tool wear mechanism.The results show that the mainly wear patterns of coated tool are micro-chipping, micro-cracks and flaking in high speed milling GH4169 with TiAlN coated tool.The tool wear mechanisms are mainly abrasive wear, adhesive wear, diffusion wear and oxidation wear.

An Experimental Research of Dry Milling Powder Metallurgy Nickel-Based Superalloy with Coated Carbide Tools

2012 ◽  
Vol 500 ◽  
pp. 38-43 ◽  
Author(s):  
Yang Qiao ◽  
Xiu Li Fu ◽  
Xue Feng Yang
Keyword(s):  
Powder Metallurgy ◽  
Tool Wear ◽  
High Speed ◽  
Milling Force ◽  
High Speed Milling ◽  
Nickel Based Superalloy ◽  
Milling Temperature ◽  
And Control ◽  
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 paper presents an experimental study of high speed milling of powder metallurgy nickel-based superalloy with PVD (TiAlN-TiN) coated carbide tools. Experimental measurements of milling temperature and milling force were performed. Then the surface roughness and tool wear were analyzed and discussed under dry machining conditions. The results might be helpful to guiding the selection and design of tool materials and control of tool wear in high speed milling PM nickel-based superalloy.

scholarly journals Experimental study on machining deformation of large scale slender beam with weak stiffness  of Ti6Al4V

2021 ◽  
Author(s):  
Qimeng Liu ◽  
Jinkai Xu ◽  
Huadong Yu
Keyword(s):  
Titanium Alloy ◽  
Tool Wear ◽  
High Speed ◽  
Large Scale ◽  
Machining Accuracy ◽  
Beam Structure ◽  
High Speed Milling ◽  
Deformation Problem ◽  
Machining Deformation ◽  
Slender Beams

Abstract Large-scale slender beam structures with weak stiffness are widely used in the aviation field. There will be a great deformation problem in machining because the overall stiffness of slender beam parts is lower. Firstly, the cutting mechanism and stability theory of the Ti6Al4V material are analyzed, and then the auxiliary support is carried out according to the machining characteristics of the slender beam structure. The feasibility of the deformation suppression measures for the slender beam is verified by experiments. The experimental analysis shows that on the basis of fulcrum auxiliary support, the filling of paraffin melt material is capable of increasing the damping of the whole system, improving the overall stiffness of the machining system, and inhibiting the chatter effect of machining. This method is effective to greatly improve the accuracy and efficiency during machining of slender beam parts. On the premise of the method of processing support with the combination of fulcrum and paraffin, if the tool wear is effectively controlled, the high precision machining of large-scale slender beams can be realized effectively, and the machining deformation of slender beams can be reduced. Although high speed milling has excellent machining effect on the machining accuracy of titanium alloy materials, severe tool wear is observed during high-speed milling of titanium alloy materials. Therefore, high-speed milling of titanium alloy slender beam is suitable to be carried out in the finishing process, which can effectively control tool wear and improve the machining accuracy of parts. Finally, the process verification of typical weak stiffness slender beam skeleton parts is carried out. Through the theoretical and technical support of the experimental scheme, the machining of large-scale slender beam structure parts with weak stiffness is realized.

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