scholarly journals Carbide tool wear mechanism in turning of Inconel 718 superalloy

Wear ◽  
1996 ◽  
Vol 193 (1) ◽  
pp. 16-24 ◽  
Author(s):  
Y.S. Liao ◽  
R.H. Shiue
Keyword(s):  
Tool Wear ◽  
Wear Mechanism ◽  
Inconel 718 ◽  
Carbide Tool ◽  
Tool Wear Mechanism ◽  
Inconel 718 Superalloy

Investigation on laser-induced oxidation assisted micro-milling of Inconel 718

2020 ◽  
Vol 234 (8) ◽  
pp. 1102-1112 ◽  
Author(s):  
Hongjun Xia ◽  
Guolong Zhao ◽  
Maoshun Hu ◽  
Liang Li ◽  
Aqib Mashood Khan ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Wear Mechanism ◽  
Inconel 718 ◽  
Micro Milling ◽  
Hybrid Process ◽  
Hybrid Machining ◽  
Burr Size ◽  
Tool Wear Mechanism ◽  
Coating Delamination

Poor surface quality and rapid tool wear are the main problems in micro-cutting of Inconel 718. In this study, a novel hybrid machining method named laser-induced oxidation assisted micro-milling is proposed to solve the aforementioned problems. A loose oxide layer and a relatively flat sublayer are formed on the material after laser irradiation. Under optimized laser parameters with a scanning speed of 1 mm/s and an average laser power of 4.5 W, the thicknesses of the oxide layer and the sublayer are 24 and 18 μm, respectively. The influence of cutting parameters on milling force, surface roughness, surface quality, and top burr size is studied in detail. Cutting force and thrust force in the proposed hybrid machining process are lower than those in the conventional micro-milling. Results show that for the investigated range of parameters, the optimal feed per tooth and depth of cut in the hybrid process are 3 μm/z and 3 μm, respectively. When using the optimal parameters, the surface roughness of the machined slot bottom is 108.5 nm. The top burr size on the up-milling side and the down-milling side is 26.8 and 36.2 μm, respectively. In addition, the tool wear mechanism is coating delamination in hybrid process, whereas chipping, coating delamination, tool nose breakage, and adhesion are the main tool wear mechanism in the conventional micro-milling. For the same amount of material removal, the proposed hybrid process can decrease the tool wear and enhance the service life of the micro-end mill as compared to conventional micro-milling.

Study on Application of Lubrication Technology in Turning Pure Iron

2013 ◽  
Vol 770 ◽  
pp. 116-119 ◽  
Author(s):  
Dong Ming Xu ◽  
Hui Chen ◽  
Jin Xing Kong
Keyword(s):  
Tool Wear ◽  
Wear Mechanism ◽  
Pure Iron ◽  
Carbide Tool ◽  
Fatigue Wear ◽  
Precision Turning ◽  
Adhesion Wear ◽  
Key Factor ◽  
Tool Wear Mechanism ◽  
Better Than

In the process of precision turning parts of pure iron, tool wear is very serious. The tool wear has been a key factor to affect the precision of parts. In this paper, the experiments of turning pure iron by use of carbide tools have been carried out in different cooling and lubricating conditions. Based on the analysis of the SEM pictures of carbide tool wear morphology and the compare of the carbide tool wear degree in different cutting conditions, it can be concluded that the carbide tool wear mechanism are mainly adhesion wear and fatigue wear and the benefit of lubricating condition is better than cooling condition to improve the tool life. According to the results, the application of CMQL technology can effectively reduce tool wear in turning pure iron.

Evaluation of Soybean Oil-Based MQL As a Potential Replacement for Emulsion Flood Cooling Strategy for High-Speed Face Milling of Inconel 718

2020 ◽  
Author(s):  
Anthony Chukwujekwu Okafor ◽  
Theodore Obumselu Nwoguh
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Soybean Oil ◽  
Flow Rate ◽  
Wear Mechanism ◽  
Inconel 718 ◽  
Face Milling ◽  
Flow Rates ◽  
Oil Flow ◽  
Tool Wear Mechanism

Abstract This paper presents the results of comparative evaluation of soybean oil based MQL oil flow rates at 10, 30, 50, 70, and 90 ml/h with emulsion flood coolant (EC) at 1200 l/h as a benchmark in face milling of Inconel 718 using coated carbide inserts. Resultant cutting force, tool wear/ mechanism, and surface roughness are the machining performance parameters analyzed. The results show that MQL oil flow rate at 70 ml/h gave the least tool wear comparable to that of EC, while 10 ml/h gave the highest tool wear. Also, 70 ml/h gave the lowest resultant cutting force among all MQL flow rates. Increasing soybean oil-based MQL flow rate improves surface roughness and reduces tool wear by providing enough thin lubrication film but also leads to an increase in chip affinity and formation of large built-up-edges (BUEs) as the MQL flow rate reaches 90 ml/h. At lower soybean oil-based MQL flow rate, tool wear mechanism is predominantly abrasion due to large surface friction, while at higher soybean oil-based MQL flow rate, tool wear mechanism is adhesion leading to excessive BUEs. Soybean oil-based MQL flow rate at 70 ml/h is recommended when face milling Inconel 718 and is demonstrated to be a potential replacement of EC for machining difficult-to-cut metal.

scholarly journals Tool wear mechanism of turning Inconel 718 and EEMD-based feature analysis

2021 ◽  
Vol 2044 (1) ◽  
pp. 012085
Author(s):  
Delong Dong ◽  
Taoyuan Li ◽  
Xiangyu Wang ◽  
Yang Qiao ◽  
Peiquan Guo
Keyword(s):  
Tool Wear ◽  
Wear Mechanism ◽  
Inconel 718 ◽  
Feature Analysis ◽  
Tool Wear Mechanism

Evaluation of Thermal Effects in Turning Processes: Numerical and Experimental Approach

2019 ◽  
Author(s):  
Aruna Prabha Kolluri ◽  
Srinivasa Prasad Balla ◽  
Satya Prasad Paruchuru
Keyword(s):  
Finite Element ◽  
Temperature Distribution ◽  
Tool Wear ◽  
Wear Mechanism ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Tool Material ◽  
Maximum Error ◽  
Tool Wear Mechanism ◽  
Coated Carbide

Abstract The 3D Finite element method (FEM) is an efficient tool to predict the variables in the cutting process, which is otherwise challenging to obtain with the experimental methods alone. The present study combines both experimental findings and finite element simulation outcomes to investigate the effect of tool material on output process variables, such as vibrations, cutting temperature distribution and tool wear mechanism. Machining of popular aerospace materials like Ti-6Al-4V and Al7075 turned with coated and uncoated tools are part of the investigation. The authors choose the orthogonal test, measured vibrations and cutting temperatures and used FE simulations to carry out the subsequent validations. This study includes the influence of the predicted heat flux and temperature distribution on the tool wear mechanism. The main aim of this study is to investigate the performance quality of uncoated and coated carbide tools along with its thermal aspects. Comparison of experiment and simulation outcomes shows good agreement with a maximum error of 9.02%. It has been noted that the increase of cutting temperature is proportional to its cutting speed. As the cutting speed increases, it is observed that vibration parameter and flank wear value also increases. Overall, coated carbide turning insert tool is the best method for metal turning with higher rotational speeds of the spindle.

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