Effect of Tool Geometry, Feed Rate, and Rotational Speed of Thermal Friction Drilling Process on AISI 304 Stainless Steel

El-Bahloul, Sara A.; El-Shourbagy, Hazem E.; El-Midany, T. T.

doi:10.21608/bfemu.2020.99343

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…Threads have widespread utilization in many mechanical joining applications, and such a combination of drilling and tapping operations can be easily automated in work lines. In the manufacturing process there are usually two methods used to create the inner threads [27,[30][31][32][33][34][35]:…”

Section: Friction Drilling Methodsmentioning

confidence: 99%

New Findings in the Field of Thermal Drilling of Aluminum Alloys

et al. 2020

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This paper explores the joining of materials by a new progressive method of thermal drilling. Many types of joints are utilized in industrial production, especially in the automotive industry, which requires the joining of different types of materials with different thicknesses. For these needs, it will be appropriate to apply the joining method of thermal drilling technology. The used material, its mechanical properties, and the preparation of the joint by assembly and disassembly operations play an equally important role. By using new friction technologies, we can reduce production time, increase joint quality, offer automation in certain types of operations, save economic costs, and protect the environment. In this contribution, the authors present the results of their scientific research work focused on an investigation, comparison and testing of thermal drilling effects on the behavior of aluminum alloys (AlMgSi). The holes, collars and bushings formed by the drilling method were subjected to visual shape evaluation. Based on the evaluation of the samples, the quality of the evaluated joints was assessed. The best shape and strength properties at higher speeds of the drilling machine were obtained at 3400 rpm. The results of the methods of macroscopy and microscopy investigations, as well as the results of the methods of scanning electron microscope (SEM) and energy dispersive X-ray (EDS), are presented in this contribution.

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Section: Friction Drilling Methodsmentioning

confidence: 99%

New Findings in the Field of Thermal Drilling of Aluminum Alloys

et al. 2020

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Parameters affecting the quality of friction drilled holes and formed thread in austenitic stainless steel AISI 304

Bassiouny

Al-Makky

Youssef

2023

Int J Adv Manuf Technol

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The main purpose of this research paper is to improve the quality of the friction-drilled holes and formed thread by investigating the influence of the input working parameters that have not been investigated yet on the quality of the produced bores. Due to lack of research related to the hardness macro- and microstructure of formed threads, experiments were conducted to investigate these important issues. Finally, a tension test was performed to compare the performance of the form tapped thread with the conventionally cut thread. The experiments were conducted on difficult-to-cut material AISI 304 stainless steel workpieces with (2 and 3 mm) wall thicknesses. Tungsten carbide friction drills with diameters (Ø9.2, Ø7.3, and Ø4.5 mm) were used to perform the experiments. The effects of the ratio of workpiece thickness (t) to tool diameter (dT), rotational speed (N), and feed speed (f) on the hole diametral oversize (U), cylindricity error, and collar height were studied. The analysis of variance (ANOVA) showed that the t/d ratio was the most significant factor affecting the mean cylindricity error and the collar height. By comparing the performance of the three tools, it was noticeable that the friction drill Ø7.3 realized better results in terms of mean hole diametral oversize and mean cylindricity error. The elevated temperature associated with high plastic deformation during the processes resulting in fine grains with high hardness values were observed at the heat-affected zone. The longer effective thread length of the formed thread realized higher strength values than the cut thread. Graphical abstract

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Effect of Tool Geometry, Feed Rate, and Rotational Speed of Thermal Friction Drilling Process on AISI 304 Stainless Steel

Cited by 2 publications

References 8 publications

New Findings in the Field of Thermal Drilling of Aluminum Alloys

New Findings in the Field of Thermal Drilling of Aluminum Alloys

Parameters affecting the quality of friction drilled holes and formed thread in austenitic stainless steel AISI 304

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