Contribution to Milling of Materials on Ni Base

2012 ◽  
Vol 217-219 ◽  
pp. 2056-2059 ◽  
Author(s):  
Ivan Mrkvica ◽  
Miroslav Janoš ◽  
Petr Sysel
Keyword(s):  
Tool Wear ◽  
Inconel 718 ◽  
Cutting Parameters ◽  
Nickel Superalloy ◽  
Cutting Conditions ◽  
Cutting Process ◽  
Cemented Carbides ◽  
Cutting Inserts

This article deals with milling possibilities of nickel superalloy - Inconel 718. The different cemented carbides were applied for cutting process. These inserts were produced by Pramet Tools Ltd. company. This paper discusses durability of cutting inserts, the different intensity of tool wear at various cutting parameters. The most suitable cutting conditions are chosen in the scope of applied tools.

Turning of Inconel 718 by Cemented Carbides

2011 ◽  
Vol 496 ◽  
pp. 138-143 ◽  
Author(s):  
Ivan Mrkvica ◽  
Ryszard Konderla ◽  
Miroslav Faktor
Keyword(s):  
Tool Wear ◽  
Inconel 718 ◽  
Cutting Parameters ◽  
Nickel Superalloy ◽  
Cutting Conditions ◽  
Cutting Process ◽  
Cemented Carbides ◽  
Dry Turning ◽  
Cutting Inserts

This article deals with dry turning of nickel superalloy - Inconel 718. The different cemented carbides were applied for cutting process. These inserts were produced by Pramet Tools Ltd. company. This paper discusses durability of cutting inserts, the different intensity of tool wear at various cutting parameters. The most suitable cutting conditions are chosen in the scope of applied tools.

COMPARISON OF PREPARATION METHODS IN TERMS OF TOOL LIFE AND SURFACE ROUGHNESS

2021 ◽  
Vol 2021 (4) ◽  
pp. 4836-4840
Author(s):  
ROBERT STRAKA ◽  
◽  
JOZEF PETERKA ◽  
TOMAS VOPAT ◽  
◽  
...  
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Cutting Parameters ◽  
Turning Process ◽  
Machined Surface ◽  
Preparation Methods ◽  
Machined Surface Roughness ◽  
Cutting Inserts ◽  
Drag Finishing ◽  
Edge Preparation

The article compares two cutting edge preparation methods and their influence on the machined surface roughness of the difficult to cut nickel alloy Inconel 718 and the tool wear of cutting inserts made of cemented carbide. The manufacturing and preparation process of cutting inserts used in the experiment were made by Dormer Pramet. The preparation methods used in the experiment were drag finishing and brushing. Cutting parameters did not change during the whole turning process to maintain the same conditions in each step of the process and were determined based on tests for a semi-finishing operation of the turning process. To obtain durability of 25 to 30 minutes with controlled development of the tool wear the cutting parameters were determined with cooperation with the cutting inserts manufacturer.

Comparison of Round Insert's Lifetime when Milling Inconel 718

2013 ◽  
Vol 581 ◽  
pp. 26-31
Author(s):  
Ivan Mrkvica ◽  
Miroslav Janoš
Keyword(s):  
Tool Wear ◽  
Corrosive Medium ◽  
Wear Mechanisms ◽  
Inconel 718 ◽  
Experimental Tests ◽  
Cutting Conditions ◽  
Tool Wear Mechanisms ◽  
Wear Mode ◽  
Resistive Material ◽  
Cutting Speeds

This article focuses on the analysis of tool wear mechanisms in milling of Inconel 718. Inconel 718 is tough and highly temperature resistive material, which is used due to its excellent properties especially in aggressive corrosive medium. Machining of this alloy is still complicated. The feasibility of four inserts tested for milling of Inconel 718 has been shown in the work. Different cutting speeds and feeds were used. Experimental tests were performed in order to analyze wear patterns evolution. It was found influence of cutting conditions and type if insert in tool wear mode.

Identification of Subsurface Deformation in Machining of Inconel 718

2011 ◽  
Vol 117-119 ◽  
pp. 1681-1688 ◽  
Author(s):  
Jin Ming Zhou ◽  
Volodymr Bushlya ◽  
Ru Lin Peng ◽  
Jan Eric Stahl
Keyword(s):  
Tool Wear ◽  
Inconel 718 ◽  
High Speed ◽  
Strain Analysis ◽  
Cutting Parameters ◽  
Correct Prediction ◽  
Process Conditions ◽  
Machined Surface ◽  
Subsurface Deformation ◽  
Subsurface Region

There is considerable industrial significance to understand the nature of subsurface deformation under the machined surface for correct prediction of surface properties in machined components based upon the machined conditions and material behaviors that give rise to them. In this study, high speed machining of Inconel 718 was carried with whisker reinforced ceramic cutting tool under different conditions of tool wear, coolant state and cutting parameters. The objective of the present investigation was to determine the effect of both cutting parameters and tool wear on the plastic deformation in the subsurface region of Inconel 718 after the finishing machining with above process conditions. The surface and subsurface region of machined specimens were examined using a high resolution scan electron microscope (HRSEM) and EBSD technique, microhardness measurements were also conducted on the test samples, accordingly plastic strain analysis were carried out.

Flank Wear Mechanism of WC-5TiC-10Co Cemented Carbides Inserts when Machining HT250 Gray Cast Iron

2014 ◽  
Vol 670-671 ◽  
pp. 517-521 ◽  
Author(s):  
Jian Chen ◽  
Man Feng Gong ◽  
Shang Hua Wu
Keyword(s):  
Cast Iron ◽  
Tool Wear ◽  
Wear Mechanism ◽  
Gray Cast Iron ◽  
Cutting Tools ◽  
Cutting Parameters ◽  
Gray Cast ◽  
Cemented Carbides ◽  
Depth Of Cut ◽  
Tool Wear Mechanism

WC–5TiC–10Co cemented carbides inserts were prepared and used for the cutting tool for HT250 gray cast iron. The objective was to investigate the wear mechanism when machining HT250 gray cast iron with WC–5TiC–10Co cemented carbides inserts. WC–10Co cemented carbides with the same sintering technology and grain size were prepared for comparison. wear mechanism was examined at the same cutting parameters. The cutting tests were performed at a speed of 120 m/min with feed rate of 0.2 mm/rev and a constant depth of cut of 0.2 mm under dry conditions. Tool wear mechanism is analyzed by SEM and EDS. Adhesive and built-up-edge were found to be the predominant tool wear for WC–5TiC–10Co cemented carbides inserts. However, Attrition was the main wear mechanisms observed in WC–10Co cutting tools. The results obtained indicated that WC–5TiC–10Co cutting tools performed better than WC–10Co cutting tools, in terms of tool wear with current parameters.

Initial tool wear behavior in high-speed turning of Inconel 718

2020 ◽  
Vol 44 (3) ◽  
pp. 395-404
Author(s):  
Morvarid Memarianpour ◽  
Seyed Ali Niknam ◽  
Sylvain Turenne ◽  
Marek Balazinski
Keyword(s):  
Steady State ◽  
Tool Wear ◽  
Inconel 718 ◽  
High Speed ◽  
Wear Behavior ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Industrial Applications ◽  
Wide Range ◽  
Tool Wear Mechanism

Three distinctive regions of tool wear, known as initial wear, steady-state wear, and accelerated wear, are well understood. However, the effects of cutting parameters on the initial tool wear mechanism, morphology, and size have received less attention as compared to the other two regions. Knowing that adequate control of initial tool wear may lead to extended tool life, in particular in hard-to-cut metals such as superalloys, this topic has become a source of attention. Amongst superalloys, Inconel 718 is considered as one of the most difficult to cut materials, which has a wide range of industrial applications. This study intends to evaluate the effects of cutting parameters on initial tool wear, as well as tool wear progression, when turning Inconel 718. Therefore, microstructural evaluation of the initial tool wear mode under various cutting conditions, as well as tool wear measurements, were conducted. It was observed that certain elements of the workpieces were migrated to the insert flank face. This is evidence of adhesion at the initial moments of the cutting process. In contrast to many other easy-to-cut materials, the steady-state wear period when turning Inconel 718 is significantly short under a higher level of cutting speed and feed rate.

Evaluation of Surface Roughness and Tool Wear in High Speed Machining of Inconel 718

2019 ◽  
Vol 943 ◽  
pp. 66-71
Author(s):  
Moola Mohan Reddy ◽  
Viviana Yong Chai Nie
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Feed Rate ◽  
Inconel 718 ◽  
High Speed ◽  
Cutting Parameters ◽  
Spindle Speed ◽  
Depth Of Cut ◽  
High Speed Machining ◽  
Super Alloy

This research work considered the high speed milling operation of Inconel 718 using a 4 flute solid carbide end mill tool without the use of coolant. Inconel 718 is a Nickel based Heat Resistance Super Alloy (HRSA) that is vastly used in the aerospace industries due to its excellent corrosion resistance and good mechanical properties. However, Inconel 718 is considered as a difficult-to-cut super alloy, which poses several problems when machining the material. The aim of this work is to investigate the effect and the influence of cutting parameters (feed rate, spindle speed, and depth of cut) on the quality of the machined surface as well as to evaluate the tool wear after machining. This evaluation of the surface roughness was done using a CNC milling machine at various parameters range for the values of feed rate (50-150 mm/min), spindle speed (2000-4000 RPM), and depth of cut (0.05-0.1 mm). The experiment was designed using Response Surface Analysis Method with Central Composite Design (CCD) to optimize the experimentation. The resulting tool wear and surface roughness after high speed machining were then analysed using ANOVA to determine the cutting parameters which is most affecting the surface roughness.

Tool Engage Investigation in Nickel Superalloy Turning Operations

2012 ◽  
Vol 504-506 ◽  
pp. 1305-1310 ◽  
Author(s):  
Antonio del Prete ◽  
Antonio Alberto de Vitis ◽  
Luigino Filice ◽  
Serafino Caruso ◽  
Domenico Umbrello
Keyword(s):  
Tool Wear ◽  
Feed Rate ◽  
Cutting Forces ◽  
Inconel 718 ◽  
Cutting Conditions ◽  
Tool Geometry ◽  
Turning Operations ◽  
Coated Carbide ◽  
Super Alloy

This paper reports the results of an experimental study of the tool wear and cutting forces in turning of Inconel 718 with coated carbide inserts. Inconel 718 is a difficult-to-cut nickel-based super-alloy commonly used in aerospace industry. The effects of cutting speed, feed rate and cutting tool geometry on tool wear have been widely analyzed in literature. Turning operations on complex components such as aircraft engines casings require the insert replacement at the end of each geometric feature manufacturing, independently from the actual tool wear level. For this reason, it is important to preserve tool integrity mainly in the most critical phase of operation (i.e., when the tool engages the workpiece). In fact, if the tool is damaged in this stage the quality of the whole operation is compromised. The attention has been focused on engage cutting conditions because the phenomenon that appears in this critical step plays a wide influence on tool integrity and, consequently, on the quality of the operation. For this purpose a nickel-based super alloy ring-workpiece, (Inconel 718), has been machined in lubricated cutting conditions by using a CNC lathe with carbide coated tools. Two variables have been investigated in this study: the Depth Of Cut (DOC) and the approaching Engage angle (En). In the studied working conditions Speed (S), Feed-rate (F) and removed volume (Vrim) were kept constant. Both tool wear and cutting forces evolution during cutting have been analyzed.

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