High speed machining of near-beta titanium Ti-5553 alloy under various cooling and lubrication conditions

Taşçıoğlu, Emre; Gharibi, Armin; Kaynak, Yusuf

doi:10.1007/s00170-019-03291-3

Cited by 47 publications

(20 citation statements)

References 37 publications

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“…Although there are benefits from using coolants and lubrication during machining in terms of chip evacuation [ 39 ], reduced thermal distortion and tool wear [ 40 ], minimum quantity lubrication (MQL) and dry machining are preferred these days as they are more environmentally friendly and reduce the overall machining costs [ 41 , 42 ]. Dry machining has the benefit of decreasing power consumption because the high cutting temperature generated can help by slightly softening the target material in the pre-cut area, reducing its hardness and the required cutting force.…”

Section: Introductionmentioning

confidence: 99%

Precision Hard Turning of Ti6Al4V Using Polycrystalline Diamond Inserts: Surface Quality, Cutting Temperature and Productivity in Conventional and High-Speed Machining

et al. 2020

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This article presents the results of an experimental investigation into the machinability of Ti6Al4V alloy during hard turning, including both conventional and high-speed machining, using polycrystalline diamond (PCD) inserts. A central composite design of experiment procedure was followed to examine the effects of variable process parameters; feed rate, cutting speed and depth of cut (each at five levels) and their interaction effects on surface roughness and cutting temperature as process responses. The results revealed that cutting temperature increased with increasing cutting speed and decreasing feed rate in both conventional and high-speed machining. It was found that high-speed machining showed an average increase in cutting temperature of 65% compared with conventional machining. Nevertheless, high-speed machining showed better performance in terms of lower surface roughness despite using higher feed rates compared to conventional machining. High-speed machining of Ti6Al4V showed an improvement in surface roughness of 11% compared with conventional machining, with a 207% increase in metal removal rate (MRR) which offered the opportunity to increase productivity. Finally, an inverse relationship was verified between generated cutting temperature and surface roughness. This was attributed mainly to the high cutting temperature generated, softening, and decreasing strength of the material in the vicinity of the cutting zone which in turn enabled smoother machining and reduced surface roughness.

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Section: Introductionmentioning

confidence: 99%

Precision Hard Turning of Ti6Al4V Using Polycrystalline Diamond Inserts: Surface Quality, Cutting Temperature and Productivity in Conventional and High-Speed Machining

et al. 2020

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“…Doprowadzenie chłodziwa pod wysokim ciśnieniem zapewnia więc największą trwałość ostrza, a na drugim miejscu jest chłodzenie kriogeniczne. Smarowanie minimalne (MQL) jest w tym przypadku nieefektywne [40,41].…”

Section: Chłodzenie Pod Wysokim Ciśnieniemunclassified

New developments in cooling techniques for machining superalloys

Jemielniak¹

2021

Mechanik

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The paper presents an update of the recent literature on advances in cooling techniques for machining of difficult to machine materials such as nickel and titanium-based alloys used in aero-engine and aerostructure applications. The review covers: cryogenic machining, minimum quantity lubrication, the combination of MQL and cryogenic cooling, and high-pressure lubricoolant supply. Examples of applications in industrial processes are also given.

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“…Besides optimizing the process parameters and tool properties to prevent high temperature generated by machining titanium alloys, some researchers tended to utilize other techniques such as hybrid machining [19] and cooling system [20]. Liu et al [21], studied turning of Ti6Al4V alloys using cool air gun cooling system which showed lower values of cutting temperature compared with dry condition.…”

Section: Introductionmentioning

confidence: 99%

Relative performance of coated ceramic and CBN inserts in hard turning of Ti6Al4V alloy

Abdelnasser

Barakat

Elsanabary

et al. 2020

Port-Said Engineering Research Journal

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Characteristics of cutting insert are key factors for the reliability of machining of difficult-to-cut materials such as Ti6Al4V alloy. Therefore, in this paper a comparison between the performance of two different materials, ceramic insert coated by (Al2O3+TiNC) and CBN, when turning Ti6Al4V alloy in dry environment. Effect of process parameters, feed rate, cutting speed and depth of cut, and their interactions on measured cutting temperature were examined for both inserts. Taguchi method was utilized to design of experiments (L9) and the results were analyzed by analysis of variance (ANOVA). From the results, CBN insert showed a good behavior for heat dissipation during machining compared with coated ceramic insert with a reduction in cutting temperature by 28%. Moreover, it was found that cutting temperature increased by increase in cutting speed and depth of cut and decrease in feed rate when using the two types of insert. In addition, it was observed that cutting temperature was affected by varying process parameters when machining by CBN insert more than the case of coated ceramic tool. The significant parameter affected cutting temperature in the case of CBN was feed rate followed by cutting speed. While at coated ceramic insert, the most significant parameters effect on cutting temperature was cutting speed.

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High speed machining of near-beta titanium Ti-5553 alloy under various cooling and lubrication conditions

Cited by 47 publications

References 37 publications

Precision Hard Turning of Ti6Al4V Using Polycrystalline Diamond Inserts: Surface Quality, Cutting Temperature and Productivity in Conventional and High-Speed Machining

Precision Hard Turning of Ti6Al4V Using Polycrystalline Diamond Inserts: Surface Quality, Cutting Temperature and Productivity in Conventional and High-Speed Machining

New developments in cooling techniques for machining superalloys

Relative performance of coated ceramic and CBN inserts in hard turning of Ti6Al4V alloy

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