Experimental Investigation of Mechanical-Thermal Characteristics in High Efficiency Turning Titanium Alloy Ti6Al4V

2016 ◽  
Vol 836-837 ◽  
pp. 20-28
Author(s):  
Li Min Shi ◽  
Cheng Yang ◽  
Qi Jun Li
Keyword(s):  
Titanium Alloy ◽  
Tool Wear ◽  
Cutting Force ◽  
High Efficiency ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Thermal Characteristics ◽  
Tool Failure ◽  
Minimal Quantity Lubrication ◽  
Titanium Alloy Ti6al4v

Titanium alloy Ti6Al4V has poor machinability, which leads to high unit cutting force and cutting temperature, rapid tool failure. In this study, the effect of the cutting speed, feed rate and cooling condition on cutting force and cutting temperature is critically analysed by turning experiment. At the same time, the relationship is established among tool wear, cutting force and cutting temperature. This investigation has shown that cutting speed is the decisive factor which increasing cutting force and cutting temperature. In the process of turning, tool wear results in high amounts of heat and mechanical stress, which leads to serious tool wear. The Minimal Quantity Lubrication reduces the frictional condition at the chip-tool, decreases cutting force and cutting temperature, and delays the tool failure.

Experimental Study in High Efficiency Milling of Hydrogenated Ti6Al4V Alloy

2013 ◽  
Vol 770 ◽  
pp. 179-182
Author(s):  
Shu Bao Yang ◽  
Jiu Hua Xu ◽  
Yu Can Fu ◽  
Guo Hui Zhu
Keyword(s):  
Experimental Study ◽  
Titanium Alloy ◽  
Cutting Force ◽  
Tool Life ◽  
Hydrogen Content ◽  
High Efficiency ◽  
Cutting Speed ◽  
Favorable Effect ◽  
Maximum Magnitude ◽  
Titanium Alloy Ti6al4v

Milling tests were undertaken to analyze and compare the machinability of hydrogenated titanium alloy Ti6Al4V. Uncoated WC-Co tool inserts were used in the study. The feed and the depth of milling were maintained constant, and only the milling speed was varied because it is the most affecting parameter. Results showed that cutting force and tool life were greatly influenced by the contents of hydrogen. Tool life decreased at first and then increased gradually with the increase of hydrogen content, and the maximum magnitude decrease of tool life is about 0.2%H, meanwhile, the maximum tool life is about 0.5%H. However, with the increase of cutting speed, the favorable effect of hydrogen on the titanium alloy machinability would be weakened even disappear, therefore, 50-100m/min would be a suitable choice of cutting speed.

Experimental Investigation of Tool Wear and Chip Morphology in Turning Titanium Alloy Ti6Al4V

2014 ◽  
Vol 800-801 ◽  
pp. 81-86
Author(s):  
Zhen Li ◽  
Er Liang Liu ◽  
Teng Da Wang ◽  
Jiao Li ◽  
Yong Chun Zheng
Keyword(s):  
Titanium Alloy ◽  
Tool Wear ◽  
Cutting Force ◽  
Feed Rate ◽  
Cutting Speed ◽  
Chip Morphology ◽  
Adhesion Wear ◽  
On Chip ◽  
Titanium Alloy Ti6al4v ◽  
Cutting Experiments

The various feed rate and cutting speed have an important influence on cutting force, tool wear and chip morphology in machining titanium alloy. Cutting experiments are carried out analyzing the titanium alloy Ti6Al4V under different cutting speed and feed rate, the cutting force values are obtained. The analysis results show that the dominant wear pattern is adhesion wear and chipping. And the tool wear also has an influence on chip morphology.

Study on Determination of Friction Model at the Tool-Chip Interface of Titanium Alloy Ti6Al4V Based on Orthogonal Cutting

2011 ◽  
Vol 117-119 ◽  
pp. 1788-1791
Author(s):  
Yue Feng Yuan ◽  
Wu Yi Chen
Keyword(s):  
Titanium Alloy ◽  
Cutting Force ◽  
Metal Cutting ◽  
Orthogonal Cutting ◽  
Cutting Speed ◽  
Friction Model ◽  
Carbide Tool ◽  
Orthogonal Turning ◽  
Titanium Alloy Ti6al4v

It is necessary for cutting simulation to determine the friction model at the tool-chip interface suitable for metal cutting process. Cutting force experiments in orthogonal turning titanium alloy TI6AL4V are carried out with cement carbide tool KW10. The Coulomb frictions at the tool-chip interface are calculated based on measured cutting force, and the friction model is regressed, where cutting speed and feed rate are presented.

scholarly journals Experimental Investigation on Dry Routing of CFRP Composite: Temperature, Forces, Tool Wear, and Fine Dust Emission

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5697
Author(s):  
Tarek Elgnemi ◽  
Victor Songmene ◽  
Jules Kouam ◽  
Martin B.G. Jun ◽  
Agnes Marie Samuel
Keyword(s):  
Tool Wear ◽  
Cutting Force ◽  
Dust Emission ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Machining Process ◽  
Specific Cutting Energy ◽  
Fine Dust ◽  
Cutting Energy ◽  
Cutting Speeds

This article presents the influence of machining conditions on typical process performance indicators, namely cutting force, specific cutting energy, cutting temperature, tool wear, and fine dust emission during dry milling of CFRPs. The main goal is to determine the machining process window for obtaining quality parts with acceptable tool performance and limited dust emission. For achieving this, the cutting temperature was examined using analytical and empirical models, and systematic cutting experiments were conducted to assess the reliability of the theoretical predictions. A full factorial design was used for the experimental design. The experiments were conducted on a CNC milling machine with cutting speeds of 10,000, 15,000, and 20,000 rpm and feed rates of 2, 4, and 6 µm/tooth. Based on the results, it was ascertained that spindle speed significantly affects the cutting temperature and fine particle emission while cutting force, specific cutting energy, and tool wear are influenced by the feed rate. The optimal conditions for cutting force and tool wear were observed at a cutting speed of 10,000 rpm. The cutting temperature did not exceed the glass transition temperature for the cutting speeds tested and feed rates used. The fine particles emitted ranged from 0.5 to 10 µm aerodynamic diameters with a maximum concentration of 2776.6 particles for those of 0.5 µm diameters. Finally, results of the experimental optimization are presented, and the model is validated. The results obtained may be used to better understand specific phenomena associated with the milling of CFRPs and provide the means to select effective milling parameters to improve the technology and economics of the process.

Research on Wear Mechanisms while Turning Titanium Alloy TC4

2010 ◽  
Vol 97-101 ◽  
pp. 1845-1848
Author(s):  
Dong Liu ◽  
Wu Yi Chen ◽  
Hong Hai Xu ◽  
Xue Ke Luo
Keyword(s):  
Titanium Alloy ◽  
Tool Wear ◽  
Cutting Force ◽  
Flank Wear ◽  
Aerospace Industry ◽  
Cutting Temperature ◽  
High Chemical ◽  
Adhesion Wear ◽  
Wear Tool ◽  
High Chemical Activity

Titanium alloys are widely used in aerospace industry due to their excellent mechanical properties. Because of their low thermal conductivity, high chemical activity, large friction coefficient and so on, such problems occur during the cutting process as high cutting temperature, large specific cutting force and serious tool wear, leading to low machining efficiency. The cutting force, forms of tool wear; wear mechanics were experimentally studied and analyzed while machining titanium alloy TC4 using carbide tools YS8 and YG8. The experimental results indicated that the tool wear of YG8 influenced cutting force not very remarkable when flank wear smaller than 0.25mm. But when the flank wear was bigger than 0.25mm, the cutting force increased rapidly with the flank wear increased. And the tool wear influenced the cutting force dramatically. The forms of tool wear during machining TC4 using carbide tool were adhesion wear, tool chipping and. The desquamation and chipping of tool caused by adhesion wear were the main reason of the tool failure.

Experimental Study on Tool Wear in Cutting Titanium Alloy Ti6Al4V

2011 ◽  
Vol 239-242 ◽  
pp. 2011-2014
Author(s):  
Yue Feng Yuan ◽  
Wu Yi Chen ◽  
Wen Ying Zhang
Keyword(s):  
Titanium Alloy ◽  
Tool Wear ◽  
Tool Life ◽  
Linear Regression Analysis ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Aged Condition ◽  
Cutting Depth ◽  
Solution Treated ◽  
Titanium Alloy Ti6al4v

Tool wear experiments in turning titanium alloy Ti6Al4V in the solution-treated and aged condition were carried out; the influence rules of cutting parameters such as cutting speed, feed rate and cutting depth on the tool life were obtained. Experimental formula of tool wear was regressed based on multi-variable linear regression analysis, it could predict tool life under certain conditions.

Tool Wear Investigation on Dry Electrostatic Cooling in Turning Titanium Alloy Ti6Al4V

2010 ◽  
Vol 97-101 ◽  
pp. 2058-2061 ◽  
Author(s):  
Hui Wang ◽  
Rong Di Han ◽  
Yang Wang
Keyword(s):  
Titanium Alloy ◽  
Tool Wear ◽  
Tool Life ◽  
Metal Cutting ◽  
Cutting Speed ◽  
Cutting Fluid ◽  
Dry Cutting ◽  
Set Up ◽  
Titanium Alloy Ti6al4v ◽  
Emulsion Oil

The machinability of Titanium Alloy Ti6Al4V is poor, the traditional methods to machining is application of cutting fluids with the active additives which cause environmental pollution and health problems. In this paper, the dry electrostatic cooling was applied instead of cutting fluid for the aim of green cutting Ti6Al4V. The ionized device and gas supply system was set up, the effects of dry electrostatic cooling, emulsion oil and dry cutting on tool wear have been examined in turning of Ti6Al4V with carbide tools YG8, the curve between tool flank wear and cutting time was proposed, and the equation between cutting speed and tool life was set up. The results of experiments indicated that application of dry electrostatic cooling reduced the tool wear and increased the tool life. The research results show that clean production was achieved in metal cutting associated with dry electrostatic cooling.

scholarly journals On the Machinability Evolution in Asymmetric Milling of TC25 Ti Alloy Aiming at High Performance Machining

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7306
Author(s):  
Xueli Song ◽  
Hongshan Zhang
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
High Performance ◽  
High Efficiency ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Depth Of Cut ◽  
Balanced Development ◽  
Radial Depth ◽  
The Asymmetry

In this paper, the evolutions of cutting force, cutting temperature, and surface roughness, and the corresponding machinability in asymmetric up-milling of TC25 alloy are investigated. The results indicated that radial depth of cut generated opposite influence on the cutting force/cutting temperature versus surface roughness. The reason can be accounted as the intertwining of feed marks at low radial depth of cut, and the mechanism of hard cutting at a high radial depth of cut. Moreover, the asymmetry has a significant effect on the machinability in asymmetry up-milling TC25 alloy. Changing the asymmetry, i.e., the radial depth of cut, can alter the machinability while maintain the balanced development of various indexes. The machinability reaches the best when the radial depth of cut is ae = 8 mm. The axial depth of cut and feed per tooth should be selected as large as possible to avoid work hardening and to improve machining efficiency in asymmetric up-milling TC25 alloy. The cutting speed should be controlled within Vc = 100–120 m/min to obtain better machinability. On the basis of this research, it is expected to find optimized milling parameters to realize high efficiency milling of TC25 alloy.

Study on Cutting Forces and Surface Finish During End Milling of Titanium Alloy

2014 ◽  
Author(s):  
Krishnaraj Vijayan ◽  
Samsudeen Sadham ◽  
Saikumar Sangeetha ◽  
Kuppan Palaniyandi ◽  
Redouane Zitoune
Keyword(s):  
Experimental Study ◽  
Titanium Alloy ◽  
Cutting Force ◽  
Cutting Tool ◽  
End Milling ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Depth Of Cut ◽  
Dry Cutting ◽  
Cutting Speeds

This paper investigates numerical and experimental study of end milling of titanium alloy Ti–6% Al–4% V using carbide insert based cutting tool. The experiments were carried out under dry cutting conditions. The cutting speeds selected for the experiments are 20,30,40,50 mmin–1. The feed rates used in the experiment were 0.02, 0.04, 0.06 and 0.08 mmrev–1, while depth of cut is kept constant at 1.0 mm. For conducting the experiments single insert based cutting tool is based. For a range of cutting speeds and feeds measurements of cutting force, surface roughness and cutting temperature have been recorded. From the experimental study it can be seen that cutting speed has the significant effect on temperature when compared to feed/tooth. Further it is also found that cutting speed of 30 m min−1 and feed rate of 0.02 mm rev−1 could be used for machining Ti alloy. Moreover the experimental and numerical cutting force values are compared.

The Investigation of Tool Wear in High Speed Cutting INCONEL718

2010 ◽  
Vol 33 ◽  
pp. 347-350
Author(s):  
J. Zhou ◽  
R.D. Han
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Cutting Force ◽  
High Speed ◽  
High Efficiency ◽  
Cutting Tool ◽  
Cutting Temperature ◽  
Main Method ◽  
High Speed Cutting ◽  
Cutting Tool Wear

As the main method of high efficiency machining Ni-based superalloy, high-speed cutting can not but intensify the cutting-tool wear. So, it is very necessary to find the rule of cutting-tool wear in high-speed cutting superalloy, especially, the effect of cutting-tool wear on the cutting force, cutting temperature and surface roughness of machined workpiece. In this paper, the PCDTiAlN cemented carbide insert is used in the experiment, the value of cutting-tool wear and the corresponding cutting force, cutting temperature and surface roughness of machined workpiece is measured. It indicates that the cutting force, cutting temperature and surface roughness of machined workpiece is changed corresponding the cutting-tool wear changes, and cutting-tool is serious, for example, the crater wear expands quickly; the boundary wear is obvious.

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