The Use of TiAlN Coated Carbide Tool when Finish Drilling of Stainless Steel X4Cr17Ni8TiN

2010 ◽  
Vol 39 ◽  
pp. 369-374 ◽  
Author(s):  
Jozef Jurko
Keyword(s):  
Stainless Steel ◽  
Tool Wear ◽  
Stainless Steels ◽  
Wear Mechanisms ◽  
Cutting Speed ◽  
Temperature Fields ◽  
Machined Surface ◽  
Tool Wear Mechanisms ◽  
Cutting Zone ◽  
Coated Carbide

In this paper presents the conclusions of machinability tests on a new stainless steel X4Cr17Ni8TiN, which applicated in food processing industry, and describes important concurrent parameters for the cutting zone during the process of finish drilling. This paper presents the results of experiments that concerned the verification of temperature fields in tool and the machined surface by drilling of stainless steels X4Cr17Ni8TiN. The content of this paper also focuses on the analysis of selected domains through basic indicators of steel machinability: cutting edge tool life, surface roughness, and wear mechanisms. The machinability of stainless steels is examined based on the cutting tests. The effect of cutting speed are analysed by tool wear mechanisms, and temperature tool. Based on the cutting tests, cutting speeds of 40 to 80 m/min, feed rate of 0.04 to 0.1 mm per rev.and solid a new design of screw drill from sintered carbide with hydraulic holder. Diameter of screw drill is 5.5 mm. Tool wear criterion of VBK value 0.12 mm. Wear mechanisms analysed by Semi Electron Microscopy (SEM).

Helical Drills Wear during Drilling of a New ELC Austenitic Stainless Steels

2012 ◽  
Vol 217-219 ◽  
pp. 2202-2205 ◽  
Author(s):  
Jozef Jurko ◽  
Anton Panda ◽  
Marcel Behún ◽  
Andrej Berdis ◽  
Ján Gecák ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Tool Wear ◽  
Stainless Steels ◽  
Cutting Speed ◽  
Austenitic Stainless Steels ◽  
Depth Of Cut ◽  
Low Carbon ◽  
Tool Wear Mechanisms ◽  
Cutting Zone

This article presents the results of experiments that concerned on the tool wear and tool wear mechanisms by drilling of a new Extra Low Carbon (ELC) austenitic stainless steel X02Cr16Ni10MoTiN. This article presents conclusions of machinability tests on new austenitic stainless steels X02Cr16Ni10MoTiN. The results of cutting zone evaluation under cutting conditions (cutting speed in interval vc=30-50 m/min, depth of cut ap=4.0 mm and feed f=0.02-0.08 mm per rev.).

The Use of TiAlN Coated Carbide Tool when Finish Machining Stainless Steel

2012 ◽  
Vol 224 ◽  
pp. 204-207
Author(s):  
Jozef Jurko ◽  
Anton Panda ◽  
Marcel Behún
Keyword(s):  
Stainless Steel ◽  
Tool Wear ◽  
Stainless Steels ◽  
Cutting Tool ◽  
Cutting Speed ◽  
Austenitic Stainless Steels ◽  
Depth Of Cut ◽  
Carbide Tool ◽  
Cutting Zone ◽  
Coated Carbide

This article presents conclusions of use TiAlN at drilling of a new austenitic stainless steels. This article presents the results of experiments that concerned the verification of the cutting tool wear. The results of cutting zone evaluation under cutting conditions (cutting speed vc=60 m/min, depth of cut ap= 3.0 mm and feed f= 0.04 mm per rev.) .

Study of the Tool Life and the Tool Wear Mechanisms in the Production of Holes in Stainless Steel

2013 ◽  
Vol 459 ◽  
pp. 424-427 ◽  
Author(s):  
Jozef Jurko ◽  
Anton Panda
Keyword(s):  
Stainless Steel ◽  
Tool Wear ◽  
Tool Life ◽  
Stainless Steels ◽  
Feed Rate ◽  
Wear Mechanisms ◽  
Theory And Practice ◽  
Tool Wear Mechanisms ◽  
Cutting Speeds

The content of this article also focuses on the analysis of the tool life of screw drills. This paper presents the conclusions of tests on a stainless steel DIN 1.4301.The results of the article are conclusions for working theory and practice for drilling of stainless steels. Based on the cutting tests, cutting speeds of 30 to 60 m/min, feed rate of 0.04to0.1 mm and screw drill carbide monolite.

Experimental Investigations of Tool Wear Mechanisms in Machining 1Cr18Ni9Ti Stainless Steel

2010 ◽  
Vol 97-101 ◽  
pp. 1858-1862
Author(s):  
Fa Zhan Yang ◽  
Jun Zhao ◽  
Cheng Liang Sun ◽  
Guang Yao Meng
Keyword(s):  
Stainless Steel ◽  
Tool Wear ◽  
Stainless Steels ◽  
Wear Mechanisms ◽  
Cutting Forces ◽  
Austenitic Stainless Steels ◽  
Cutting Parameters ◽  
Experimental Investigations ◽  
Measuring Device ◽  
Tool Wear Mechanisms

The purpose of this investigation is to recognize the wear mechanisms of cemented carbide tools in dry hard turning of stainless steel (1Cr18Ni9Ti). From the view point of machining, stainless steels are often considered as poor machinability materials. Turning tests were carried out by using a CA6140 lathe and a cutting force measuring device. For this purpose, both microscopic and microstructural aspects of the tools were taken into consideration. Meanwhile, the cutting forces are also measured in the experiment. The chips were analyzed by scanning electron microscopy. The machinability of 1Cr18Ni9Ti austenitic stainless steels is examined in terms of tool life and cutting parameter presented in this paper. Results show that cutting forces vary greatly with the experimental cutting parameters. Analysis indicated that tool wear mechanisms observed in the machining tests involve abrasion wear, thermal and fatigue shock wear and adhesive wear.

Performance of Cryogenic Machining with Nitrogen Gas in Machining of Titanium

2011 ◽  
Vol 52-54 ◽  
pp. 2003-2008 ◽  
Author(s):  
Thet Thet Mon ◽  
J. Ramli ◽  
Jeefferie Abd Razak ◽  
Safian Sharif ◽  
V.C. Venkatesh
Keyword(s):  
Tool Wear ◽  
Surface Finish ◽  
Cutting Speed ◽  
Edge Condition ◽  
Stainless Steel Tube ◽  
Nitrogen Gas ◽  
Machined Surface ◽  
Cutting Insert ◽  
Cutting Zone ◽  
Coated Carbide

This research presents performance of nitrogen gas as a coolant in machining titanium. Compressed nitrogen gas stored in a cylindrical tank is supplied to the cutting zone via the stainless steel tube of 2x8x25mm (inside diameter x outside diameter x length) connected to the flexible hose and specially-designed valve with pressure controller. Machining experiments are carried out on conventional turning center. The cutting tool used is triangular insert of ISO-TPGN160308 with the holder (ISO-CTGPR3232K). The cutting insert grade is KC5010 (TiAlN3 coated carbide) as recommended by Kennametal for machining titanium. During machining, the tube is manually directed to be just-above the tool rake face and the nitrogen gas is supplied with high pressure so that the cutting zone receives an effective cooling as well as the chip brakes easily. The effectiveness of this new cooling strategy is demonstrated by the cutting edge condition and surface finish after machining at various speeds, and also by comparing with performance of conventional coolant. The result is found to be excellent in terms of relative amount of tool wear and surface finish. The cutting insert has surprisingly remained almost intact when using nitrogen gas coolant whereas severe tool wear occurred with conventional coolant even at low cutting speed. This cryogenic strategy also improved machined surface quality greatly.

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.).

scholarly journals Investigation of AlCrN-Coated Inserts on Cryogenic Turning of Ti-6Al-4V Alloy

Metals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1338
Author(s):  
Lakshmanan Selvam ◽  
Pradeep Kumar Murugesan ◽  
Dhananchezian Mani ◽  
Yuvaraj Natarajan
Keyword(s):  
Tool Wear ◽  
Cutting Force ◽  
Physical Vapor Deposition ◽  
Metal Cutting ◽  
Cutting Speed ◽  
Depth Of Cut ◽  
Machining Parameters ◽  
Machined Surface ◽  
Coated Carbide ◽  
Cryogenic Conditions

Over the past decade, the focus of the metal cutting industry has been on the improvement of tool life for achieving higher productivity and better finish. Researchers are attempting to reduce tool failure in several ways such as modified coating characteristics of a cutting tool, conventional coolant, cryogenic coolant, and cryogenic treated insert. In this study, a single layer coating was made on cutting carbide inserts with newly determined thickness. Coating thickness, presence of coating materials, and coated insert hardness were observed. This investigation also dealt with the effect of machining parameters on the cutting force, surface finish, and tool wear when turning Ti-6Al-4V alloy without coating and Physical Vapor Deposition (PVD)-AlCrN coated carbide cutting inserts under cryogenic conditions. The experimental results showed that AlCrN-based coated tools with cryogenic conditions developed reduced tool wear and surface roughness on the machined surface, and cutting force reductions were observed when a comparison was made with the uncoated carbide insert. The best optimal parameters of a cutting speed (Vc) of 215 m/min, feed rate (f) of 0.102 mm/rev, and depth of cut (doc) of 0.5 mm are recommended for turning titanium alloy using the multi-response TOPSIS technique.

Experimental Study on Nano-TiAlN Coated Carbide Tools in Turning Austenitic Stainless Steel

2012 ◽  
Vol 723 ◽  
pp. 247-251
Author(s):  
Hai Dong Yang ◽  
Zhi Ding
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Tool Life ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Dry Cutting ◽  
Processing Efficiency ◽  
Machined Surface ◽  
Tool Wear Mechanism ◽  
Coated Carbide

Austenitic stainless steel has poor cutting performance, especially when the inappropriate choice of tool materials and cutting parameters, cutting tool life will be shortened and the quality of machined surface is poor. In this paper, 0Cr18Ni9 stainless steel dry cutting tests had been done with nano-TiAlN coated carbide blade YGB202, the relationship between tool life and cutting speed, tool wear mechanism had been analyzed. In order to improve the processing efficiency and tool life, process parameters were optimized.

Tool wear mechanisms in the machining of steels and stainless steels

2016 ◽  
Vol 87 (9-12) ◽  
pp. 3157-3168 ◽  
Author(s):  
Anselmo Eduardo Diniz ◽  
Álisson Rocha Machado ◽  
Janaina Geilser Corrêa
Keyword(s):  
Tool Wear ◽  
Stainless Steels ◽  
Wear Mechanisms ◽  
Tool Wear Mechanisms

Acoustic Emission Based Tool Wear Condition Monitoring While Turning Nimonic C-263 Alloy Using PVD Coated Carbide Insert

2013 ◽  
Author(s):  
V. S. Senthil Kumar ◽  
C. Ezilarasan ◽  
A. Velayudham
Keyword(s):  
Acoustic Emission ◽  
Tool Wear ◽  
Wear Mechanisms ◽  
Gas Turbines ◽  
Cutting Conditions ◽  
Tool Wear Mechanisms ◽  
Cutting Velocity ◽  
Coated Carbide ◽  
Carbide Insert ◽  
Super Alloy

Due to its ability to resist thermal fatigue and creep resistance at higher temperature, nimonic C-263 super alloy is frequently applied in the hot combustion chamber of gas turbines. By virtue of the above they induce tool wear while machining which seriously affect the life of the component, and it is a serious concern, since it is used in critical applications. To monitor the status of the tool condition, several sensors are utilised, of which acoustic emission is most widely used due to its nature of generation phenomenon. In this paper PVD coated carbide insert is utilised to conduct tool wear study through turning of nimonic C-263 super alloy. The experiments were performed at different combinations of cutting conditions. The life of the cutting tool at different cutting conditions and the tool wear mechanisms were analysed. Results revealed that acoustic signal predict the condition well and that cutting velocity play a major role in the tool wear progression. Abrasion, micro chipping and plastic deformation are observed to be the major tool wear mechanisms.

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