333 Surface Alteration when Machining Inconel 718 with Ceramic and Coated Carbide Tools under High Pressure Coolant Supply

2003 ◽  
Vol 2003 (0) ◽  
pp. 595-600 ◽  
Author(s):  
E. O. Ezugwu ◽  
J. Bonney
Keyword(s):  
High Pressure ◽  
Inconel 718 ◽  
Surface Alteration ◽  
Coated Carbide ◽  
High Pressure Coolant ◽  
Coated Carbide Tools

scholarly journals Thermal Modeling of Tool Temperature Distribution during High Pressure Coolant Assisted Turning of Inconel 718

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 408 ◽  
Author(s):  
Doriana D'Addona ◽  
Sunil Raykar
Keyword(s):  
High Pressure ◽  
Temperature Distribution ◽  
Inconel 718 ◽  
Tool Temperature ◽  
Machining Processes ◽  
Nickel Chromium ◽  
Work Material ◽  
Cutting Zone ◽  
Overall Performance ◽  
High Pressure Coolant

This paper presents a finite-element modeling (FEM) of tool temperature distribution during high pressure coolant assisted turning of Inconel 718, which belongs to the heat resistance superalloys of the Nickel-Chromium family. Machining trials were conducted under four machining conditions: dry, conventional wet machining, high pressure coolant at 50 bar, and high pressure coolant at 80 bar. Temperature during machining plays a very important role in the overall performance of machining processes. Since in the current investigation a high pressure coolant jet was supplied in the cutting zone between tool and work material, it was a very difficult task to measure the tool temperature correctly. Thus, FEM was used as a modeling tool to predict tool temperature. The results of the modeling showed that the temperature was considerably influenced by coolant pressure: the high pressure jet was able to penetrate into the interface between tool and work material, thus providing both an efficient cooling and effective lubricating action.

scholarly journals Performance of PVD-Coated Carbide Tools When Turning Inconel 718 in Dry Machining

2011 ◽  
Vol 3 ◽  
pp. 790975 ◽  
Author(s):  
Gusri Akhyar Ibrahim ◽  
Che Hassan Che Haron ◽  
Jaharah Abdul Ghani ◽  
Ahmad Yasir Moh. Said ◽  
Moh. Zaid Abu Yazid
Keyword(s):  
Inconel 718 ◽  
Dry Machining ◽  
Coated Carbide ◽  
Coated Carbide Tools

scholarly journals EFFECT OF HIGH PRESSURE COOLANT JET ON CUTTING TEMPERATURE, TOOL WEAR AND SURFACE FINISH IN TURNING HARDENED (HRC 48) STEEL

2015 ◽  
Vol 45 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Mozammel Mia ◽  
Nikhil Ranjan Dhar
Keyword(s):  
High Pressure ◽  
Tool Wear ◽  
Cutting Forces ◽  
High Speed ◽  
Hard Turning ◽  
Cutting Tools ◽  
Cutting Temperature ◽  
Beneficial Effects ◽  
Coated Carbide ◽  
High Pressure Coolant

Hard turning of harder material differs from conventional turning because of its larger specific cutting forces requirements. The beneficial effects of hard turning can be offset by excessive temperature generation which causes rapid tool wear or premature tool failure if the brittle cutting tools required for hard turning are not used properly. Under these considerations, the concept of high-pressure coolant (HPC) presents itself as a possible solution for high speed machining in achieving slow tool wear while maintaining cutting forces at reasonable levels, if the high pressure cooling parameters can be strategically tuned. This paper deals with an experimental investigation of some aspects of the turning process applied on hardened steel (HRC48) using coated carbide tool under high-pressure coolant, comparing it with dry cut. The results indicate that the use of high-pressure coolant leads to reduced surface roughness, delayed tool flank wear, and lower cutting temperature, while also having a minimal effect on the cutting forces.

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