Cutting performance and coated tool wear mechanisms in laser-assisted milling K24 nickel-based superalloy

Kong, Xianghao; Yang, Lijun; Zhang, Hongzhi; Wang, Yang

doi:10.1007/s00170-014-6606-9

Cited by 36 publications

(22 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They claimed that the use of cryogenic cooling resulted in improving tool life but did not result in a reduction in forces. Kong et al [12] studied the effect of workpiece heating instead of cooling on machinability and showed that laser heating during milling of a Ni-based alloy significantly reduced VB and various force values. However, despite of the well-recognised importance of forces and the progression of tool deterioration as parts of the assessment of machinability, more closely correlating the two was not attempted in these two studies of investigating the effect of thermal condition during milling on machinability.…”

Section: Introductionmentioning

confidence: 99%

Progression of tool deterioration and related cutting force during milling of 718Plus superalloy using cemented tungsten carbide tools

Razak

Chen

Pasang

2016

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Understanding how tool deterioration affects total force (F) during milling of Ni-based superalloys is important for the improvement of machinability of the alloys and serves to clarify whether and how an F-based method for monitoring tool deterioration is possible. In this study, a series of milling experiments have been conducted on 718Plus Ni-based alloy using cemented tungsten carbide tool inserts. F was monitored, and the conventional flank wear (VB max ) to represent insert deterioration was measured. As would be expected, the general trend of how F increased as the number of milling pass (N pass ) increased agreed with the general trend of increasing VB max as N pass increased. But the F-VB max plot has shown a rather poor F-VB max relationship. This was the results of the different modes of tool deterioration affecting VB max differently, but VB max did not represent fully the true cutting edge of the deteriorating tool insert. Chipping and breakage of the inserts confined in the cutting edge area, resulting in the significant blunting of the edge, caused a high rate of F increase as VB max increased. Fracturing along the flank face of thin pieces effectively increased VB max without increasing the cutting edge area and without further blunting the edge, thus no increase in F was required. That the high rate, meaning high ΔF/ ΔVB max , results from the effect of edge deterioration/ blunting on reducing the effective rake angle and thus increasing F is suggested and discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Progression of tool deterioration and related cutting force during milling of 718Plus superalloy using cemented tungsten carbide tools

Razak

Chen

Pasang

2016

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Novak et al [11] noticed several advantages of PEM over conventional machining, including improvement of surface roughness, lower cutting forces, and extended tool life. Kong et al [12] carried out the experiments to evaluate the wear behavior of different commercially available coated tools with preheat technology. Vagnorius [13] showed that, when used properly, high-pressure cooling can help to increase the productivity in machining of heat-resistant alloys with ceramic tools.…”

Section: Introductionmentioning

confidence: 99%

Employing preheating- and cooling-assisted technologies in machining of Inconel 718 with ceramic cutting tools: towards reducing tool wear and improving surface integrity

Zhuang

Zhang

Zhu

et al. 2015

Int J Adv Manuf Technol

View full text Add to dashboard Cite

This paper is motivated by the fact that machining of Inconel 718 involves rapid tool wear and poor surface integrity. We investigate the performance of ceramic cutting inserts in turning of Inconel 718 by virtue of two different assisted machining conditions, plasma preheating-and cryogenic cooling-assisted technologies. The plasma nozzle placed in front of the cutting zone is used to soften the materials before machining. The liquid nitrogen flow located in the cutting area is used to reduce the cutting temperatures in the contact area. The cutting experiments are set for reducing tool wear and improving surface integrity, including surface roughness and micro-hardness beneath workpiece surface. With these two assisted techniques, the tool wear including flank wear and notch wear and the surface microstructure including surface roughness and micro-hardness are assessed and compared with conventional machining. Tool wear reduction and surface integrity improvement can be obtained with these two assisted technologies in turning of Inconel 718 with ceramic cutting inserts. The main causation of notch wear of the ceramic cutting inserts may be the hardened layer beneath the surface. By comparing these two assisted cutting techniques with opposite effects on the cutting tool and workpiece, it has been found that the surface roughness is reduced by 50 %, the micro-hardness is smaller, and the tool life is extended up to more than 40 % over conventional machining.

show abstract

“…It can be observed that the LAMM recorded the lowest value of force components at all tested conditions. Kong et al [34] reported that laser-assisted machining successfully demonstrated the reduction of cutting force by around 30%-70% over the conventional machining process. Because the heat generated by cutting and the lasers approached the melting point, and thus reduced the shear resistances.…”

Section: Cutting Forcementioning

confidence: 99%

“…However, Kong et al [34] investigated the effectiveness of coating material on laser-assisted milling of K24 nickel-based alloy. The amounts of average flank wear increases for both conventional machining and LAM with increasing cutting times are shown in Figure 16.…”

Section: Tool Wearmentioning

confidence: 99%

Thermal-Assisted Machining of Nickel-based Alloy

Rahim¹,

Warap²,

Mohid³

2015

Superalloys

View full text Add to dashboard Cite

Nickel-based alloy can be found in different industrial applications especially in aircraft engines and hot end components of various types of gas turbines with its high strength, strong corrosion resistance and excellent thermal fatigue properties and thermal stability compared to conventional materials. However, nickel-based alloy is one of the extremely difficult-to-cut materials. During the machining process, the interaction between the tool and the workpiece causes severe plastic deformation and intense friction at the tool-workpiece interface. Because of the increasing demands in industries, any improvement of conventional machining processes or any other deployment of additional technique is directly related to higher productivity.Thermal-assisted machining (TAM) has become an effective alternative to the conventional machining of these difficult-to-cut materials. Various types of heating methods and the beneficial effects on machining of nickel-based alloys are discussed in this chapter. Finally, TAM was proven as an efficient technique to increase the machinability of nickel-based alloys in terms of tool life, surface roughness and cutting force.

show abstract

Cutting performance and coated tool wear mechanisms in laser-assisted milling K24 nickel-based superalloy

Cited by 36 publications

References 37 publications

Progression of tool deterioration and related cutting force during milling of 718Plus superalloy using cemented tungsten carbide tools

Progression of tool deterioration and related cutting force during milling of 718Plus superalloy using cemented tungsten carbide tools

Employing preheating- and cooling-assisted technologies in machining of Inconel 718 with ceramic cutting tools: towards reducing tool wear and improving surface integrity

Thermal-Assisted Machining of Nickel-based Alloy

Contact Info

Product

Resources

About