An investigation of the effects of cutting parameters and graphite reinforcement on quality characteristics during the drilling of Al/10B 4 C composites

Eki̇ci̇, Ergün; Motorcu, Ali Rıza; Uzun, Gültekin

doi:10.1016/j.measurement.2016.10.041

Cited by 37 publications

(13 citation statements)

References 25 publications

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“…To achieve an acceptable value for adj-R 2 , several factors were eliminated: A 3 , A 2 B, A 2 C, AB, and B. Thus, R 2 was 91.40%, adj-R 2 was 81.09%, and adj-R 2 was close to 80%, so it can be considered suitable in machining processes [36]. Table 9 describes the ANOVA results for torques; at a confidence level of 95%, there are two significant factors, A and A 2 , and a significant interaction ABC.…”

Section: Reinforced Polyamide Pa66-gf30mentioning

confidence: 99%

A Multi-Response Optimization of Thrust Forces, Torques, and the Power of Tapping Operations by Cooling Air in Reinforced and Unreinforced Polyamide PA66

2018

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Abstract:The use of cooling air during machining is an environmentally conscious procedure, and its applicability to different processes is a research priority. We studied tapping operations, an important operation in the assembly process, using cooling air with unreinforced polyamide (PA66) and polyamide reinforced with glass fiber (PA66-GF30). These materials are widely used in industry, but their behavior with respect to tapping has not been studied. We analyze the outcomes regarding the thrust force, torque, and power at cutting speeds between 15 and 60 m/min. The experimental tests were executed using cooling air at 22 • C, 2 • C, and −18 • C in dry conditions. The M12 × 1.75 mm taps were high-speed steel, with cobalt as the base material and coatings of TiN and AlCrN. To identify the more influential factors, an analysis of variance was performed, along with multi-response optimization to identify the desirability values. This optimization shows that the optimum for PA66can be found in environments close to 3 • C, while the optimum for PA66-GF30 is found at the minimal temperature studied (−18 • C). Thus, cooling air can be considered an adequate procedure for tapping operations, to increase the sustainability of the manufacturing processes.

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Section: Reinforced Polyamide Pa66-gf30mentioning

confidence: 99%

A Multi-Response Optimization of Thrust Forces, Torques, and the Power of Tapping Operations by Cooling Air in Reinforced and Unreinforced Polyamide PA66

2018

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Section: Resultsmentioning

confidence: 99%

“…38,41 It has been revealed in the literature studies that BUE is formed on the cutting edge with the effect of low hardness and high ductility properties in alloys containing high aluminum content. [42][43][44][45][46] It was determined that the addition of 0.6 wt. % Mg to Al-9Si-0.1Sr alloy reduced the F by 8.151% and the Ra by 46.774%.…”

Section: Structural and Mechanical Properties Of The Alloysmentioning

confidence: 99%

Experimental research on machinability characteristics of Al-9Si alloy: Effect of Sr and Mg additives

Hekìmoğlu

Bayraktar

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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In this study, the effects of strontium (Sr) and magnesium (Mg) elements in certain rates added to Al-9Si alloy manufactured using permanent mold casting technique on the structural, mechanical, and machinability properties of these alloys were investigated. While microstructural images of the alloys were obtained with an optical microscope, hardness, tensile strength, and elongation to fracture were determined by conventional methods. The resultant cutting force ( F) and average surface roughness ( Ra) were measured as experimental outputs in the turning process. It was observed that Al-9Si alloy comprised of α-Al, eutectic Al-Si, β, and primary Si phases. The addition of Sr to the Al-9Si alloy led to the formation of the Al4Sr phase and the transformation of the β phase into the δ phase. The addition of Mg to Al-9Si-0.1Sr alloy caused the δ phase to transform into the π phase. The hardness of the tested alloy increased significantly with the Mg addition. The yield strength and tensile strength of them increased with both Sr and Mg additions. On the other hand, elongation to fracture value of the Al-9Si alloy increased with Sr addition while it decreased with the Mg addition. The F and Ra values obtained from the Al-9Si alloy increased with Sr addition in the turning process while decreased with Mg addition. The results obtained from turning tests were discussed based on the mechanical properties of alloys.

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“…Ekici et al [21] examined the impact of process variables on thrust force, surface roughness, dimensional accuracy and burr height properties while drilling Al/10B 4 C and Al/ 10B 4 C/5Gr composites with uncoated carbide twist drills under dry cutting conditions at 3 distinct speeds and feed rates. Using ANOVA, the percentage proportion of the process variables to the product quality was calculated, and statistical linear equations were constructed to estimate the quality properties.…”

Section: Introductionmentioning

confidence: 99%

Optimization of machining parameters in drilling of LM6/B₄C/Fly ash hybrid composites

Prakash

Rubi²,

Sivaprakasam³

et al. 2022

Manufacturing Rev.

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Metal matrix composites (MMCs), innovative replacements for traditional materials, are currently achieving a growing trend in engineering and research for operations like aviation, nuclear power, and automotive. Machining of MMCs makes it challenging to get good dimensional accuracy, surface finish and lower tool wear. Drilling is a necessary and immensely useful tool for component assembly in the manufacturing sector. As a result, optimization of drilling process variables is unavoidable. The fundamental purpose of this study is to use the stir casting technique to manufacture LM6/B4C/Fly ash composites with 3, 6 and 9 wt.% of second phase materials. Taguchi's design of experiments strategy was used to drill with three levels of feed rate (F), spindle speed (S), drill material (D) and percentage of reinforcement (R) as input process parameters. Optimization of drilling variables for attaining lower surface roughness (SR) and burr height (BH) using single objective approach. The optimum process variable achieved for surface roughness is F1S3D3R2, i.e., 50 mm/min, 3000 rpm, TiN-coated drill bit and 6 wt.% of reinforcements (B4C and Fly-ash) and for burr height is F1S3D3R3, i.e., 50 mm/min, 3000 rpm, TiN-coated drill bit and 9 wt.% of reinforcements.

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An investigation of the effects of cutting parameters and graphite reinforcement on quality characteristics during the drilling of Al/10B 4 C composites

Cited by 37 publications

References 25 publications

A Multi-Response Optimization of Thrust Forces, Torques, and the Power of Tapping Operations by Cooling Air in Reinforced and Unreinforced Polyamide PA66

A Multi-Response Optimization of Thrust Forces, Torques, and the Power of Tapping Operations by Cooling Air in Reinforced and Unreinforced Polyamide PA66

Experimental research on machinability characteristics of Al-9Si alloy: Effect of Sr and Mg additives

Optimization of machining parameters in drilling of LM6/B₄C/Fly ash hybrid composites

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An investigation of the effects of cutting parameters and graphite reinforcement on quality characteristics during the drilling of Al/10B 4 C composites

Cited by 37 publications

References 25 publications

A Multi-Response Optimization of Thrust Forces, Torques, and the Power of Tapping Operations by Cooling Air in Reinforced and Unreinforced Polyamide PA66

A Multi-Response Optimization of Thrust Forces, Torques, and the Power of Tapping Operations by Cooling Air in Reinforced and Unreinforced Polyamide PA66

Experimental research on machinability characteristics of Al-9Si alloy: Effect of Sr and Mg additives

Optimization of machining parameters in drilling of LM6/B4C/Fly ash hybrid composites

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Optimization of machining parameters in drilling of LM6/B₄C/Fly ash hybrid composites