Machinability of Titanium Alloy 6246 in Drilling Using TiAlN PVD Coated Carbide Insert Tools

2021 ◽  
pp. 93-105
Author(s):  
Mahros Darsin ◽  
Tim Pasang
Keyword(s):  
Titanium Alloy ◽  
Coated Carbide ◽  
Carbide Insert

Evaluating the Effect of PCD & TialN Coated Carbide End Mill’s Rake Angle on Machinability of Titanium Alloy Ti-6Al-4V

2014 ◽  
Vol 1025-1026 ◽  
pp. 564-569 ◽  
Author(s):  
Sarwar Ali Abbasi ◽  
Ping Fa Feng
Keyword(s):  
Titanium Alloy ◽  
Cutting Forces ◽  
Elevated Temperatures ◽  
Rake Angle ◽  
Interface Temperature ◽  
Tool Stresses ◽  
Titanium Alloy Ti6al4v ◽  
Positive Angle ◽  
Coated Carbide ◽  
Carbide Insert

This study evaluates the machinability of titanium alloy, Ti6Al4V in terms of tool-chip interface temperature, cutting forces and tool stresses by varying rake angle of PCD insert and compares the results with TiAlN coated carbide inserted end mill using finite element numerical simulations. It has been found that tool rake angle has significant effect and behaves differently for different evaluation parameters and also shows different behavior for two different cutting material inserts. It reduces cutting forces with every positive angle geometry, about 50% reduction is observed for both cutting tool materials for a change in angle from-7° to 34°, but for tool-chip interface temperature, 15% reduction has been observed when angle is changed from-7° to 15° but it starts rising again when angle is increased to 34° for PCD insert, but for TiAlN coated carbide insert a continuous drop of about 20% has been observed. For tool stresses tool rake angle has different effect. The stresses remains almost unchanged when angle is changed from-7° to 15° but increased by almost 20% when angle is changed to 34° for both insert materials. Results also have shown that PCD insert due to its excellent thermal conductivity and strength at elevated temperatures dissipates most of the heat into the chip and has almost half temperature near the tool edge as compared to TiAlN coated carbide insert and thus can be used for machining of Ti6Al4V alloy at much higher cutting speeds than TiAlN coated carbide insert with positive rake angle geometries (around 15°).

Milling Force Modeling for Ti-5Al-5Mo-5V-1Cr-1Fe Alloy

2010 ◽  
Vol 431-432 ◽  
pp. 539-542
Author(s):  
Guo Liang Zhang ◽  
Wei Wei Ming ◽  
Ming Chen ◽  
Bing Han ◽  
Bin Rong
Keyword(s):  
Titanium Alloy ◽  
Cutting Force Coefficients ◽  
Milling Force ◽  
Flow Angle ◽  
Force Modeling ◽  
Chip Flow ◽  
Set Up ◽  
Coated Carbide ◽  
Carbide Inserts ◽  
Carbide Insert

With the development of aerospace, biomedical and chemical industries, titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe (TC18) is becoming widespread used. TC18 has even better mechanical property than Ti-6Al-4V (TC4). For better cutting TC18, simulation model was set up. PVD and CVD coated carbide inserts were used to machine titanium alloy TC18. The cutting forces were measured. Milling model was set up for the extraction of the cutting force coefficients and chip flow angle. Results were compared. All the coefficients of CVD coated carbide insert were found to be larger than those of PVD coated carbide insert. The model was proved to be reasonable after validation.

Evaluation of Cutting Force and Surface Roughness in Turning of GFRP Using Coated Carbide Insert

2015 ◽  
Vol 813-814 ◽  
pp. 317-321 ◽  
Author(s):  
C. Ramesh Kannan ◽  
P. Padmanabhan ◽  
K.P. Vasanthakumar
Keyword(s):  
Surface Roughness ◽  
Glass Fiber ◽  
Cutting Force ◽  
Chemical Vapour ◽  
Deposition Process ◽  
Depth Of Cut ◽  
Reinforced Plastics ◽  
Coated Carbide ◽  
Machining Parameter ◽  
Carbide Insert

This paper is to evaluate the cutting force and surface roughness in turning of Glass fiber reinforced plastics (E-glass fiber) using coated carbide insert. The comparison of the results with uncoated carbide inserts. The carbide insert is coated by multilayer chemical vapour deposition process, the coating elements are TiN/Al2O3/TiCN. The experiment is carried out in the conventional lathe machine under dry condition by varying the three cutting parameter such as speed, feed and depth of cut. The cutting force is measured using a lathe tool dynamometer and surface roughness are measured by using surf tester.The result of the experiment shows the effect of machining parameter on cutting force and surface roughness. The results have confirmed that the coated carbide insert has better results than uncoated and tool life is increased.

The Effects of Cutting Parameters on Work-Hardening of Milling Invar 36

2015 ◽  
Vol 1089 ◽  
pp. 373-376
Author(s):  
Xing Wei Zheng ◽  
Guo Fu Ying ◽  
Yan Chen ◽  
Yu Can Fu
Keyword(s):  
Work Hardening ◽  
Lattice Distortion ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Depth Of Cut ◽  
Metallographic Structure ◽  
Metallographic Observation ◽  
Coated Carbide ◽  
Carbide Insert ◽  
Axial Depth

An experiment of face milling of Invar36 was conducted by using coated carbide insert, the microhardness was tested and the metallographic structure was observed to figure out the principles of work-hardening. The results showed that the depth of work-hardening ranges from 80μm to 160μm among the parameters selected in the experiments. The degree and the depth of work-hardening were significantly affected by the axial depth of cut and feed per tooth. The degree and the depth of work-hardening showed a tendency to increase with the increase of the axial depth of cut and feed per tooth. Compared with the axial depth of cut and feed per tooth, cutting speed had less influence on the degree and depth of work-hardening. The degree and depth of work- hardening decreased slowly with the increase of cutting speed. Metallographic observation showed that work-hardening layer consisted of the thermal force influenced layer and the force influenced layer, while the amorphous metallographic structure was observed in the thermal force influenced layer, and lattice distortion was observed in the force influenced layer.

scholarly journals Wear Resistance and Titanium Adhesion of Cathodic Arc Deposited Multi-Component Coatings for Carbide End Mills at the Trochoidal Milling of Titanium Alloy

Technologies ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 38 ◽  
Author(s):  
Marina A. Volosova ◽  
Sergey V. Fyodorov ◽  
Stepan Opleshin ◽  
Mikhail Mosyanov
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Operating Time ◽  
Maximum Effect ◽  
Time To Failure ◽  
Trochoidal Milling ◽  
Cathodic Arc Deposition ◽  
End Mills ◽  
Coated Carbide ◽  
Cathodic Arc

The work was devoted to the study of the effectiveness of the application of multi-component coatings, TiN–Al/TiN, TiN–AlTiN/SiN, and CrTiN–AlTiN–AlTiCrN/SiN, obtained by cathodic arc deposition to increase the wear resistance of 6WH10F carbide end mills in trochoidal milling of titanium alloy. The surface morphology of the tool with coatings was studied using scanning electron microscopy, and surface roughness texture was estimated. Microhardness and elastic modulus of the coated carbide tool surface layer were determined by nanoindentation. The process of sticking titanium to the working surface of the tool and quantitative evaluation of end mill wear with multi-component coatings at the trochoidal strategy of milling titanium alloy was studied. The CrTiN–AlTiN–AlTiCrN/SiN coating showed the maximum value of the plasticity index at the level of 0.12. The maximum effect of reducing the wear rate was achieved when using a tool with a CrTiN –AlTiN–AlTiCrN/SiN coating when the operating time to failure of end mills was increased by 4.6 times compared to samples without coating, by 1.4 times compared with TiN–Al/TiN coating and 1.15 times compared with TiN–AlTiN/SiN coating.

High Speed Machining of Difficult-to-Machine Materials under Different Lubrication Conditions

2014 ◽  
Vol 625 ◽  
pp. 60-65 ◽  
Author(s):  
Toshiyuki Obikawa ◽  
Tatsumi Ohno ◽  
Ryuta Nakatsukasa ◽  
Mamoru Hayashi ◽  
Tomohiko Tabata
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Tool Life ◽  
High Speed ◽  
Life Extension ◽  
Air Jet ◽  
Flank Face ◽  
Air Nozzle ◽  
Carbide Insert ◽  
Lubrication Conditions

This paper describes the applicability of air jet assisted (AJA) machining to stainless steel and titanium alloy at high cutting speeds in terms of tool wear and tool life. A specially designed tool holder with an air nozzle very close to the tool tip was prepared for turning stainless steel. From the experimental results, it was found that the application of flood coolant from the side of the end flank face leads to better result in tool life in AJA machining of stainless steel than that from the side of the side flank face. The assistance of air jet can improve the tool life of the M35 CVD coated insert in machining of the stainless steel by 36 to 100% under the optimal conditions in comparison with wet machining. It was also found that the air jet assistance extended the tool life of the S10 PVD coated insert by 48% in turning titanium alloy. The tool life extension of the coated insert in AJA machining titanium alloy is much longer than that of an uncoated carbide insert.

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