Machining of tough polyethylene pipe material: surface roughness and cutting temperature optimization

Hamlaoui, Nacira; Azzouz, Salaheddine; Chaoui, Kamel; Azari, Z.; Yallese, Mohamed Athmane

doi:10.1007/s00170-017-0275-4

Cited by 22 publications

(32 citation statements)

References 32 publications

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“…However, the percentage contributions depicted that the feed rate was the most significant contributor towards the surface roughness (31.31%), followed by the depth of cut (22.06%), and finally, the spindle speed (17.30%). These results agreed with the literature (Hamlaoui et al, 2017).…”

Section: Anovasupporting

confidence: 94%

CNC Milling of Medical-Grade PMMA

Wambua

Mwema

Buddi³

et al. 2022

International Journal of Manufacturing, Materials, and Mechanical Engineering

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This study evaluates CNC milling parameters (spindle speed, depth of cut, and feed rate) on medical-grade PMMA. A single objective analysis conducted showed that the optimal material removal rate (MRR) occurs at a spindle speed of 1250 rpm, a depth of cut of 1.2 mm, and a feed rate of 350 mm/min. The ANOVA showed that feed rate is the most significant factor towards the MRR, and spindle speed (11.83%) is the least contributing. The optimal surface roughness (Ra) occurred at spindle speed of 500 rpm, depth of cut of 1.2 mm, and feed rate of 200 mm/min. The milling factors were insignificant. A regression analysis for prediction was also conducted. Further, a multi-objective optimization was conducted using the Grey Relational Analysis. It showed that the best trade-off between the MRR and the Ra could be obtained from a combination of 1250 rpm (spindle speed), 1.2 mm (depth of cut), and 350 mm/min (feed rate). The depth of cut was the largest contributor towards the grey relational grade (54.48%), followed by the feed rate (10.36%), and finally, the spindle speed (4.28%).

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Section: Anovasupporting

confidence: 94%

CNC Milling of Medical-Grade PMMA

Wambua

Mwema

Buddi³

et al. 2022

International Journal of Manufacturing, Materials, and Mechanical Engineering

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“…44,45 In our case, the CHELLALA ® DOT 3 synthetic brake oil distributed by NAFTAL Co. (Algeria) is employed as an aging environment. 46 The selected specimens are totally immersed in sufficient oil and the conditioning containers are kept tight-closed for 7 days 22,40,47…”

Section: Pipe Materials and Experimental Methodsmentioning

confidence: 99%

Compatibility study of high density polyethylene grade 80 gas pipe with synthetic polyglycol-based brake oil

Alimi,

Chaoui

2024

Journal of Elastomers & Plastics

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High Density Polyethylene (HDPE) is one attractive technical option for the transportation and distribution of natural gas and hydrocarbons given the advantages in long-term mechanical strength, lifespan, maintenance costs and resistance to chemical aging. This study investigates the compatibility of extruded pipe material from copolymerized HDPE-80 with DOT 3 brake fluid. Machined standard specimens from inner (IL) and outer (OL) pipe layers are aged in commercial synthetic polyglycol-based oil for 7 days at laboratory conditions. The percent mass changes are +2.2% and +1.9% respectively for IL and OL pipe surfaces. These results are in the same range of published sorption data for other oils and fuels. Stress-strain parameters (E, σ y, σ CD, σ f, ε y, Δ ε CD, ε f) and fracture work are established and thoroughly discussed for both pipe sides. For IL, the reduction of E, σ y and ε f are respectively 28.0%, 13.9% and 22.7%, while for OL they are 22.6%, 7.7% and 25.1%. Globally, it is concluded that strength properties degradation in DOT 3 oil is more important for IL compared to OL. There is an important loss of ductility for both pipe sides. Ageing caused IL crystallinity ( Xc) to increase while OL showed inverse results probably because of frozen anti-oxidants in the outer surface layers following water quenching during extrusion. Before and after ageing, the as-received OL is found to be more resilient to oxidation than corresponding IL, as higher OIT parameters are also shown in the case of crude oil compatibility investigations. DOT 3 brake oil seem to accelerate the degradation of HDPE-80 thermal stability with a higher intensity for IL.

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“…It is sometimes called "alkathene" or "polythene" when used for HDPE pipes with a high strength-to-density ratio. The Polyamides or Nylon class is one of the major engineering and high-performance thermoplastics classes because of its good balance of properties [28]. Polyamides contain repeating amide linkages (-CO-NH-), as shown in Figure 2b; they are formed by condensing identical units, copolymers, for different units.…”

Section: Materials and Measurement Methodsmentioning

confidence: 99%

“…M. Kaddeche et al [27] evaluated the surface roughness, cutting pressures, and temperatures during the turning of two grades of high density polyethylene (HDPE-100 and HDPE-80) extruded pipes and ANOVA was performed to establish predictive models. In addition, Hamlaoui et al [28] experimentally investigated the influence of cutting speed, feed rate, and depth of cut on surface roughness and cutting temperature during the turning of tough polyethylene pipe material HDPE-100 using a Taguchi (L27) orthogonal array. A predictive model was established between input and output parameters via the RSM.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Optimization of Turning Polymers Using RSM, GA, Hybrid FFD-GA, and MOGA Methods

et al. 2022

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The machining of polymers has become widely common in several components of industry 4.0 technology, i.e., mechanical and structural components and chemical and medical instruments, due to their unique characteristics such as: being strong and light-weight with high stiffness, chemical resistance, and heat and electricity insolation. Along with their properties, there is a need to attain a higher quality surface finish of machined parts. Therefore, this research concerns an experimental and analytical study dealing with the effect of process parameters on process performance during the turning two different types of polymers: high-density polyethylene (HDPE) and unreinforced polyamide (PA6). Firstly, the machining output responses (surface roughness (Ra), material removal rate (MRR), and chip formation (λc)) are experimentally investigated by varying cutting speed (vc), feed rate (f), and depth of cut (d) using the full factorial design of experiments (FFD). The second step concerns the statistical analysis of the input parameters’ effect on the output responses based on the analysis of variance and 3D response surface plots. The last step is the application of the RSM desirability function, genetic algorithm (GA), and hybrid FFD-GA techniques to determine the optimum cutting conditions of each output response. The lowest surface roughness for HDPE was obtained at vc = 50 m/min, f = 0.01 mm/rev, and d = 1.47 mm and for PA6 it was obtained at vc = 50 m/min, f = 0.01 mm/rev, and d = 1 mm. The highest material removal rate was obtained at vc = 150 m/min, f = 0.01 mm/rev, and d = 1.5 mm for both materials. At f = 0.01 mm/rev, d = 1.5 mm, and vc = 100 for HDPE, and vc = 77 m/min for PA6, the largest chip thickness ratios were obtained. Finally, the multi-objective genetic algorithm (MOGA) methodology was used and compared.

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Machining of tough polyethylene pipe material: surface roughness and cutting temperature optimization

Cited by 22 publications

References 32 publications

CNC Milling of Medical-Grade PMMA

CNC Milling of Medical-Grade PMMA

Compatibility study of high density polyethylene grade 80 gas pipe with synthetic polyglycol-based brake oil

Experimental Investigation and Optimization of Turning Polymers Using RSM, GA, Hybrid FFD-GA, and MOGA Methods

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