scholarly journals Machining and Tool Wear Mechanisms during Machining Titanium Alloys

2013 ◽  
Vol 651 ◽  
pp. 338-343 ◽  
Author(s):  
Alokesh Pramanik ◽  
M.N. Islam ◽  
Animesh Basak ◽  
Guy Littlefair
Keyword(s):  
Plastic Deformation ◽  
Tool Wear ◽  
Titanium Alloys ◽  
Deformation Mechanism ◽  
Wear Mechanisms ◽  
Cutting Tools ◽  
Main Tool ◽  
Thermal Crack ◽  
Tool Wear Mechanisms ◽  
Chip Formation Mechanism

This paper investigates the machining mechanism of titanium alloys and analyses those understandings systematically to give a solid understanding with latest developments on machining of titanium alloys. The chip formation mechanism and wear of different cutting tools have been analyzed thoroughly based on the available literature. It is found that the deformation mechanism during machining of titanium alloys is complex and it takes place through several processes. Abrasion, attrition, diffusion–dissolution, thermal crack and plastic deformation are main tool wear mechanisms.

Study on Tool Life and Tool Wear Mechanisms in Dry Cutting Pure Iron

2013 ◽  
Vol 770 ◽  
pp. 74-77 ◽  
Author(s):  
Jin Xing Kong ◽  
Liang Li ◽  
Dong Ming Xu ◽  
Ning He
Keyword(s):  
Tool Wear ◽  
Tool Life ◽  
Wear Mechanisms ◽  
Pure Iron ◽  
Cutting Tools ◽  
Cutting Parameters ◽  
Cutting Condition ◽  
High Plasticity ◽  
Dry Cutting ◽  
Tool Wear Mechanisms

Pure iron is a kind of high plasticity and toughness material. In the process of cutting pure iron, the tool wear is very serious. In this paper, three kinds of cutting tools KC5010, K313 and 1105 are used in the cutting pure iron process and the tool wear tests in dry cutting condition with different cutting parameters have been carried out. According to the results, the tool wear mechanisms and tool life of three kinds of cutting tools have been compared and analyzed. It is concluded that the tool life of K313 is better than KC5010 and 1105 and the three kinds of tool mechanisms are primarily adhesion wear, diffusion wear and oxidation wear.

Resistance to Abrasive Wear of Materials Used as Metallic Matrices in Diamond Impregnated Tools

2007 ◽  
Vol 534-536 ◽  
pp. 1125-1128 ◽  
Author(s):  
Janusz Konstanty ◽  
Tai Woong Kim ◽  
Sang Beom Kim
Keyword(s):  
Tool Wear ◽  
Abrasive Wear ◽  
Wear Mechanisms ◽  
Metallic Matrix ◽  
Main Tool ◽  
Petroleum Exploration ◽  
Frozen Foods ◽  
Tool Wear Mechanisms ◽  
Fundamental Research ◽  
Materials Used

Metal-bonded diamond impregnated tools are being increasingly used in the processing of natural stone, sawing and drilling concrete and brickwork, road repair, petroleum exploration, production of ceramics, cutting frozen foods, etc. Although the main tool wear mechanisms seem to be well identified, the scientific background is still inadequate and extensive fundamental research has to be carried out to better understand how the tool performs in actual applications. This work attempts to address the complex issues of modelling the abrasive wear of the metallic matrix under laboratory conditions. In view of the generated wear data, it becomes evident that a comprehensive characterisation of the matrix’s susceptibility to wear by 2-body and 3-body abrasion can be reliably assessed in a quick and inexpensive manner; whereas tests carried out on diamond impregnated specimens may assist in the prediction of the tool life in abrasive applications.

An Experimental Study on Rough Ball-End Milling of T10A Steel

2011 ◽  
Vol 188 ◽  
pp. 78-83
Author(s):  
Xin Qiang Zhuang ◽  
Chuan Zhen Huang ◽  
Zi Ye Liu ◽  
Bin Zou ◽  
H.L. Liu ◽  
...  
Keyword(s):  
Tool Wear ◽  
Wear Mechanisms ◽  
End Milling ◽  
Orthogonal Experiment ◽  
Cutting Speed ◽  
Main Tool ◽  
Depth Of Cut ◽  
Tool Wear Mechanisms ◽  
Radial Depth ◽  
Coated Cemented Carbide

The milling experiments of the annealed T10A steel were carried out in the various cutting conditions using the coated cemented carbide tool. The cutting parameters were designed by the multi-factor orthogonal experiment method, and the effects of cutting speed, feed, axial depth of cut and radial depth of cut on the cutting force and tool wear were investigated. The tool wear mechanisms were also discussed. Adhesion, abrasion, diffusion and oxidation were the main tool wear mechanisms. According to these investigations, the optimizing cutting parameter was recommended.

Study on Wear Performance of Whisker-Toughening Ceramic Cutting Tools Synthesized by the Carbothermal Reduction Process

2011 ◽  
Vol 121-126 ◽  
pp. 3555-3558
Author(s):  
Xue Wen Chong ◽  
Chuan Zhen Huang ◽  
Liang Xu ◽  
Guo Long Zhao ◽  
Bin Zou ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Tool Wear ◽  
Abrasive Wear ◽  
Wear Mechanisms ◽  
Carbothermal Reduction ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Reduction Process ◽  
Tool Wear Mechanisms ◽  
Oxidation Wear

The cutting performance and wear mechanisms of whisker-toughening ceramic cutting tools synthesized by carbothermal reduction process have been studied when cutting the hardened alloy steel 40Cr. It is indicated that the wear resistance of ceramic tools is affected by the molar ratio of C and N in tool materials. At low cutting speed, the main tool wear mechanisms are abrasive wear and oxidation wear. At middle and high cutting speed, the tool wear mechanisms are controlled by abrasive wear, adhesive wear, diffusion wear and oxidation wear simultaneously. Adding whiskers to the matrix material is one of the effective means to improve the wear resistance of ceramic cutting tools.

Tool Wear in High-Speed Milling of Ti-6Al-4V Alloy

2008 ◽  
Vol 375-376 ◽  
pp. 435-439 ◽  
Author(s):  
Song Zhang ◽  
Jian Feng Li ◽  
Feng Shi Liu ◽  
Feng Jiang
Keyword(s):  
Tool Wear ◽  
Titanium Alloys ◽  
Wear Mechanisms ◽  
High Speed ◽  
Failure Modes ◽  
Removal Rate ◽  
Main Tool ◽  
Milling Process ◽  
Mechanical Resistance ◽  
High Speed Milling

Titanium alloys are widely used in the aerospace industry for applications requiring high strength at elevated temperature and high mechanical resistance. However, titanium alloys are classified as extremely difficult-to-cut materials owing to their physical, chemical, and mechanical properties, which result in the low material removal rate and the short tool life. This paper presents an experimental research of the tool wear patterns and relevant wear mechanisms during high-speed milling of Ti-6Al-4V with cemented carbide inserts. SEM-EDX analysis showed that nose wear and edge wear were the main tool failure modes during high-speed milling process, which were different from the wear patterns under traditional cutting conditions. Adhesion, attrition and diffusion wear mechanisms, as well as the cracks were responsible for the tool wear.

Tool wear mechanisms of PcBN in machining Inconel 718: Analysis across multiple length scale

CIRP Annals ◽  
2021 ◽  
Author(s):  
Volodymyr Bushlya ◽  
Filip Lenrick ◽  
Axel Bjerke ◽  
Hisham Aboulfadl ◽  
Mattias Thuvander ◽  
...  
Keyword(s):  
Tool Wear ◽  
Wear Mechanisms ◽  
Inconel 718 ◽  
Length Scale ◽  
Tool Wear Mechanisms ◽  
Multiple Length Scale

scholarly journals Influence of Tool Wear on Form Deviations in Dry Machining of UNS A97075 Alloy

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 958
Author(s):  
Francisco Javier Trujillo Vilches ◽  
Sergio Martín Béjar ◽  
Carolina Bermudo Gamboa ◽  
Manuel Herrera Fernández ◽  
Lorenzo Sevilla Hurtado
Keyword(s):  
Tool Wear ◽  
General Trend ◽  
Cutting Speed ◽  
Main Tool ◽  
Cutting Parameters ◽  
Adhesion Wear ◽  
Tool Wear Mechanisms ◽  
Tool Wear Mechanism ◽  
High Feed ◽  
Dry Conditions

Geometrical tolerances play a very important role in the functionality and assembly of parts made of light alloys for aeronautical applications. These parts are frequently machined in dry conditions. Under these conditions, the tool wear becomes one of the most important variables that influence geometrical tolerances. In this work, the influence of tool wear on roundness, straightness and cylindricity of dry-turned UNS A97075 alloy has been analyzed. The tool wear and form deviations evolution as a function of the cutting parameters and the cutting time has been assessed. In addition, the predominant tool wear mechanisms have been checked. The experimental results revealed that the indirect adhesion wear (BUL and BUE) was the main tool-wear mechanism, with the feed being the most influential cutting parameter. The combination of high feed and low cutting speed values resulted in the highest tool wear. The analyzed form deviations showed a general trend to increase with both cutting parameters. The tool wear and the form deviations tend to increase with the cutting time only within the intermediate range of feed tested. As the main novelty, a relationship between the cutting parameters, the cutting time (and, indirectly, the tool wear) and the analyzed form deviations has been found.

scholarly journals Machining of Titanium Metal Matrix Composites: Progress Overview

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5011
Author(s):  
Cécile Escaich ◽  
Zhongde Shi ◽  
Luc Baron ◽  
Marek Balazinski
Keyword(s):  
Tool Wear ◽  
Tool Life ◽  
Wear Mechanisms ◽  
Metal Matrix ◽  
Dust Emission ◽  
Cutting Speed ◽  
Matrix Composites ◽  
Titanium Metal ◽  
Machining Processes ◽  
Tool Wear Mechanisms

The TiC particles in titanium metal matrix composites (TiMMCs) make them difficult to machine. As a specific MMC, it is legitimate to wonder if the cutting mechanisms of TiMMCs are the same as or similar to those of MMCs. For this purpose, the tool wear mechanisms for turning, milling, and grinding are reviewed in this paper and compared with those for other MMCs. In addition, the chip formation and morphology, the material removal mechanism and surface quality are discussed for the different machining processes and examined thoroughly. Comparisons of the machining mechanisms between the TiMMCs and MMCs indicate that the findings for other MMCs should not be taken for granted for TiMMCs for the machining processes reviewed. The increase in cutting speed leads to a decrease in roughness value during grinding and an increase of the tool life during turning. Unconventional machining such as laser-assisted turning is effective to increase tool life. Under certain conditions, a “wear shield” was observed during the early stages of tool wear during turning, thereby increasing tool life considerably. The studies carried out on milling showed that the cutting parameters affecting surface roughness and tool wear are dependent on the tool material. The high temperatures and high shears that occur during machining lead to microstructural changes in the workpiece during grinding, and in the chips during turning. The adiabatic shear band (ASB) of the chips is the seat of the sub-grains’ formation. Finally, the cutting speed and lubrication influenced dust emission during turning but more studies are needed to validate this finding. For the milling or grinding, there are major areas to be considered for thoroughly understanding the machining behavior of TiMMCs (tool wear mechanisms, chip formation, dust emission, etc.).

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