... [19] Kim , S. J. , Lee , T. , and Hwang , J. K. , 2020 , “ High-Strength Bolt Manufactured by an Extrusion-Based Forming Process Using Twinning-Induced Plasticity Steel ,” J. Manuf. Processes , 59 , pp. 33 – 42 . 10.1016/j.jmapro.2020.09.043 [20] Eom , J. G. , Son , Y...

... in the formed product. Two process routes are proposed: (1) chip formation by free-machining (FM), with a post-machining, light drawing reduction (<20%) to achieve desired finish and (2) constrained chip formation by large strain extrusion machining (LSEM). Using commercially pure aluminum conductor alloys...

...Gracious Ngaile; Daniel Santiago Rodrigues Forging and extrusion tools are often subjected to a combination of cyclic thermo-mechanical, chemical, and tribological loads. Strategies for minimizing these loads are critical for preventing premature tool failure and increasing productivity. A die...

.... , and Hwang , Y. , 2015 , “ Generation of a Fine Grain Layer in the Vicinity of Frictional Interfaces in Direct Extrusion of AZ31 Alloy ,” ASME J. Manuf. Sci. Eng. , 137 ( 5 ), p. 051003 . 10.1115/1.4030267 [17] Alexandrov , S. , Kuo , C. , and Jeng , Y. , 2018 , “ An Accurate...

...Ilhan Yu; Samantha Grindrod; Roland Chen Tubular structures of the hydrogel are used in a variety of applications such as delivering nutrient supplies for 3D cell culturing. The wall thickness of the tube determines the delivery rate. In this study, we used the coaxial extrusion process...

... formation in constrained cutting can occur in two different deformation modes, i.e., simple shear and complex extrusion, depending on the constrained level. Constrained cutting in the simple shear regime can reduce strain, reduce cutting force and energy, and improve surface finish compared to free cutting...

...Luigi De Pari, Jr.; Wojciech Z. Misiolek In order to simulate copper extrusion more closely to industrial practices and to analyze the roots of the complicated issue of tube eccentricity, the material properties and the extrusion conditions were simulated using the finite element modeling ( fem...

... ) and analyzed. First, the number of nodes per sections is found, based on a vector identifying the extrusion direction of the profile and a tolerance value identifying the maximum distance between nodes in a section. To find the number of nodes that every section contains, the first node in the given direction...

... severe deformation should have more pronounced benefits from EAF. In this research, Equal channel angular extrusion (ECAE) was used to induce severe plastic deformation into the material. Subsequent EAF compression experiments with the ECAE specimens and as-received material with comparable grain sizes...

...Nooman Ben Khalifa; A. Erman Tekkaya A new innovative direct extrusion process, helical profile extrusion (HPE) is presented, which increases the flexibility of aluminum profile manufacturing processes. The application fields of such profiles can be seen in screw rotors for compressors and pumps...

...H. Haghighat; P. Amjadian In this paper, plane strain extrusion through arbitrarily curved dies is investigated analytically, numerically, and experimentally. Two kinematically admissible velocity fields based on assuming proportional angles, angular velocity field, and proportional distances from...

...Xiyue Zhao; Robert G. Landers; Ming C. Leu Freeze-form extrusion fabrication is an additive manufacturing process that extrudes high solids loading aqueous ceramic pastes in a layer-by-layer fashion below the paste freezing temperature for component fabrication. Due to effects, such as the air...

... plastic deformation (SPD) processes is called the equal channel angular extrusion (ECAE). Although a large amount of studies, which deal with experimental analysis of processed parts exist, few studies dealing with the force required to perform the process have been developed. In this study, an analytical...

...S. S. Akhtar; A. F. M. Arif; B. S. Yilbas The service life of tooling plays an important part in the economics of the extrusion process. A number of causes are considered responsible for initiating damage to the dies before its designated life is reached. Apart from other factors such as die design...

...B. Aour; F. Zaïri; M. Naït-Abdelaziz; J. M. Gloaguen; J. M. Lefebvre Equal channel angular extrusion (ECAE) is a relatively novel forming process to modify microstructure via severe plastic deformation without modification of the sample cross section. In this study, an optimized design of die...

...Jyhwen Wang; Ritesh Shah; Yu-Hsuan Huang; Der-Form Chang Deformable coated materials hold promises for numerous new technologies. In this research, extrusion of polymer coated metal rods was investigated. Analytical models based on upper bound method were developed to evaluate axisymmetric conical...

... that the friction conditions obtained from comparisons of experimental results and numerical models show a size effect related to the overall dimensions of the extruded part, assuming material response is homogeneous. Another interesting observation was made when extrusion experiments were performed to produce...

...Gang Liu; Jie Zhou; Jurek Duszczyk At present, a fundamental knowledge of the thermal and mechanical interactions occurring during the extrusion of magnesium is lacking. This acts as a serious technological barrier to the cost-effective manufacturing of lightweight magnesium alloy profiles...

... is dominated by the so-called size effects, e.g., material property and frictional behavior variations at small length scales. In extrusion experiments performed to produce submillimeter-sized pins having a base diameter of 0.76 mm and an extruded diameter of 0.57 mm , the extruded pins exhibited a curving...

..., reactor beds, and car bodies. Many of these applications demand high levels of quality (e.g., R a < 0.1 μ m ) and functional performance. Among the LM processes, extrusion-based processes can potentially offer high production rates together with lower setup and operating costs. Yet process failures...