Employing preheating- and cooling-assisted technologies in machining of Inconel 718 with ceramic cutting tools: towards reducing tool wear and improving surface integrity

2015 ◽  
Vol 80 (9-12) ◽  
pp. 1815-1822 ◽  
Author(s):  
Kejia Zhuang ◽  
Xiaoming Zhang ◽  
Dahu Zhu ◽  
Han Ding
Keyword(s):  
Tool Wear ◽  
Surface Integrity ◽  
Inconel 718 ◽  
Cutting Tools ◽  
Assisted Technologies

Effect of tool wear on the surface integrity of Inconel 718 in face milling with cemented carbide tools

Wear ◽  
2021 ◽  
pp. 203752
Author(s):  
A.R.F. Oliveira ◽  
L.R.R. da Silva ◽  
V. Baldin ◽  
M.P.C. Fonseca ◽  
R.B. Silva ◽  
...  
Keyword(s):  
Tool Wear ◽  
Surface Integrity ◽  
Inconel 718 ◽  
Face Milling ◽  
Cemented Carbide ◽  
Cemented Carbide Tools

scholarly journals Milling Inconel 718 Workpiece With Cryogenically Treated And Untreated Cutting Tools

2021 ◽  
Author(s):  
Hüseyin Gürbüz ◽  
Şehmus Baday
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Abrasive Wear ◽  
Inconel 718 ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Depth Of Cut ◽  
Cutting Tool Wear ◽  
Feed Force

Abstract Although Inconel 718 is an important material for modern aircraft and aerospace, it is a kind material, which is known to have low machinability. Especially, while these types of materials are machined, high cutting temperatures, BUE on cutting tool, high cutting forces and work hardening occur. Therefore, in recent years, instead of producing new cutting tools that can withstand these difficult conditions, cryogenic process, which is a heat treatment method to increase the wear resistance and hardness of the cutting tool, has been applied. In this experimental study, feed force, surface roughness, vibration, cutting tool wear, hardness and abrasive wear values that occurred as a result of milling of Inconel 718 material by means of cryogenically treated and untreated cutting tools were investigated. Three different cutting speeds (35-45-55 m/min) and three different feed rates (0.02-0.03-0.04 mm/tooth) at constant depth of cut (0.2 mm) were used as cutting parameters in the experiments. As a result of the experiments, lower feed forces, surface roughness, vibration and cutting tool wear were obtained with cryogenically treated cutting tools. As the feed rate and cutting speed were increased, it was seen that surface roughness, vibration and feed force values increased. At the end of the experiments, it was established that there was a significant relation between vibration and surface roughness. However, there appeared an inverse proportion between abrasive wear and hardness values. While BUE did not occur during cryogenically treated cutting tools, it was observed that BUE occurred in cutting tools which were not cryogenically treated.

scholarly journals Comparison between cryogenic coolants effect on tool wear and surface integrity in finishing turning of Inconel 718

2020 ◽  
Vol 285 ◽  
pp. 116780
Author(s):  
S. Chaabani ◽  
P.J. Arrazola ◽  
Y. Ayed ◽  
A. Madariaga ◽  
A. Tidu ◽  
...  
Keyword(s):  
Tool Wear ◽  
Surface Integrity ◽  
Inconel 718

Study on Surface Integrity in Hard Milling of Hardened Die Steel

2006 ◽  
Vol 532-533 ◽  
pp. 540-543 ◽  
Author(s):  
Lu Lu Jing ◽  
Gang Liu ◽  
Ming Chen
Keyword(s):  
Residual Stress ◽  
Tool Wear ◽  
Surface Integrity ◽  
Cutting Tools ◽  
Longitudinal Direction ◽  
Negative Influence ◽  
Practical Significance ◽  
Hard Milling ◽  
Machined Surface ◽  
Die Steel

In die and mold industry, there is a tendency to use milling in the finishing machining of dies and molds as an alternative to the traditional EDM process, consequently the surface integrity in milling is considered as one of the most important indices. In this study, surface roughness, micrograph of machined surface, surface microhardness, residual stress, and metallurgical texture of the surface layer were considered. The influence of geometrical characteristics of cutting tools and tool wear on surface integrity was studied. The results showed that hard milling of hardened die steel could yield a quite satisfied surface integrity by proper process; compressive residual stress was induced on machined surface, and the compressive stress induced in transversal direction was almost 3 times of that in longitudinal direction; tool wear had a significant negative influence on surface finish and caused the machined surface soften. These conclusions revealed the effects of tool conditions on surface integrity and would play a practical significance in the machining of hardened die steel.

Tool Wear Behavior in Turning Inconel 718 with Coated Inserts

2012 ◽  
Vol 499 ◽  
pp. 348-352 ◽  
Author(s):  
Xiao Li Zhu ◽  
Song Zhang ◽  
X.L. Xu ◽  
H.G. Lv
Keyword(s):  
Tool Wear ◽  
Inconel 718 ◽  
Flank Wear ◽  
Wear Behavior ◽  
Cutting Tools ◽  
Three Dimensional ◽  
Cutting Condition ◽  
Tool Holder ◽  
Final Failure ◽  
Coated Carbide

In the present study, an experimental investigation has been carried out in an attempt to monitor tool wear progress in turning Inconel 718 with coated carbide inserts under the wet cutting condition. First, each experimental test was conducted with a new cutting edge and the turning process was stopped at a certain interval of time. Secondly, the indexable insert was removed from the tool holder and the flank wear of the insert was measured using a three-dimensional digital microscopy (VHX-600E); and then the insert was clamped into the tool holder for the next turning experiment. The final failure of tool wear surfaces were examined under a scanning electron microscope (SEM) equipped with an energy dispersive X-ray spectrometer (EDS). It is indicated that significant flank wear was the predominant failure mode, and the abrasive, adhesive and oxidation wear were the most dominant wear mechanisms which directly control the deterioration and final failure of the cutting tools.

Detecting the key geometrical features and grades of carbide inserts for the turning of nickel-based alloys concerning surface integrity

2016 ◽  
Vol 230 (20) ◽  
pp. 3725-3742 ◽  
Author(s):  
A Fernández-Valdivielso ◽  
LN López de Lacalle ◽  
G Urbikain ◽  
A Rodriguez
Keyword(s):  
Surface Integrity ◽  
Inconel 718 ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Rake Angle ◽  
Point Of View ◽  
Basic Operation ◽  
Workpiece Surface ◽  
Common Features ◽  
Feasible Solutions

Machining science is aimed at defining both cutting tools and machining conditions based on economic performance and to maintain workpiece surface integrity. Currently, machinists face a wide offer of turning, milling, drilling, and threading tools. Tools present a lot of similarities and light differences between them, being the latter the concealed reasons for a better or worse performance on difficult-to-cut alloys machining. However machinists had not useful methods for detecting which key tool aspects implies the best performance. The classic and expensive 'test-trial' method results non-viable due to the market exponential increase, both in size and specialization. This paper brings up an indirect method for seeking common features in the group of those tools with the best performance on machining Inconel 718. The method is divided into five stages, namely: (a) raw testing of a basic operation with a lot of commercial solutions for the same operation; (b) filtering of results to reduce the feasible solutions to a few ones, studying the common features of successful cases; (c) testing of these feasible solutions aimed at choosing the best insert or tool (d); and finally (e) full testing concerning all workpiece surface integrity issues. The proposed method provides knowledge based on the distilling of results, identifying carbide grades, chipbreakers shapes, and other features for having the best tool performance. All surface integrity effects are checked for the best solution. This new point of view is the only way for improving the difficult-to-cut alloys machining, reaching technical conclusions with industrial interest. This paper shows the method applied on Inconel 718 turning, resulting in a carbide grade with 10% cobalt, submicron grain size (0.5–0.8 µm) and hardness around 1760 HV, coating TiAlN monolayer with 3.5 µm thickness, chipbreaker giving 19° of rake angle that becomes 13° real one after insert is clamped on toolholder. Cutting edge radius after coating was 48 µm approximately. Cutting speed was 70 m/min higher in comparison with that recommended in handbooks.

Evaluating the Machinability of Inconel 718 Using Polar Diagrams

2010 ◽  
Author(s):  
Pajazit Avdovic ◽  
Linhong Xu ◽  
Mats Andersson ◽  
Jan-Eric Sta˚hl
Keyword(s):  
Tool Wear ◽  
Inconel 718 ◽  
Cutting Tools ◽  
Polar Diagram ◽  
New Materials ◽  
Diagram Method ◽  
Industrial Experiments ◽  
Work Material ◽  
Mechanical And Physical Properties ◽  
The Relationship

The use of a polar diagram method for describing and evaluating the machinability of Inconel 718 was explored. Five key parameters of the work material, representing the mechanical and physical properties which have strongest influence on its machinability, were employed in the diagrams. These five parameters were integrated into a single polar diagram, used to describe the machinability of Inconel 718. Variations in the machinability of Inconel 718 products or components of a given type produced in different batches were analyzed. Industrial experiments were conducted to test the relationship between the polar diagram of the work material, its carbon content, and tool wear of the ceramic cutting tools used in machining it. Work materials of Inconel 718 in which the polar diagrams of machinability were similar in size and shape exhibited very similar behavior during the cutting process. The polar diagram method employed appeared to be useful for selecting suitable cutting data for the machining of new materials.

scholarly journals Machinability of inconel 718 during turning: Cutting force model considering tool wear, influence on surface integrity

2020 ◽  
Vol 285 ◽  
pp. 116809 ◽  
Author(s):  
Bastien Toubhans ◽  
Guillaume Fromentin ◽  
Fabien Viprey ◽  
Habib Karaouni ◽  
Théo Dorlin
Keyword(s):  
Tool Wear ◽  
Cutting Force ◽  
Surface Integrity ◽  
Inconel 718 ◽  
Force Model ◽  
Cutting Force Model
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