Analysis of Two Schemes of Cold Forging of a Hollow Ball

• Autorzy: Samołyk Grzegorz , Winiarski Grzegorz

Identyfikatory

DOI

10.12913/22998624/168572

• Języki publikacji: EN

Abstrakty

EN

The paper discusses the cold forging process of a hollow ball made of aluminum alloy. The forging is carried out in dies with a closed cavity, and the billet is shaped like a tube. Two forging schemes are considered. The first scheme is the primary way of forming from a tubular billet, in which the wall deforms freely and is subject to buckling. The second scheme involves the use of an additional tool in the form of a deformable insert consisting of two rings to counteract the uncontrolled deformation of the billet wall. Experimental and theoretical analysis was carried out to compare the progression of forging shape, strain, forging force and stress.

Słowa kluczowe

EN

cold forging; hollowed balls; deformable insert; strain and stress; FEM

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2023
• Tom: Vol. 17, no 4
• Strony: 53--60
• Opis fizyczny: Bibliogr. 12 poz., fig.

Twórcy

autor

Samołyk Grzegorz

• Mechanical Engineering Faculty, Lublin University of Technology, ul. Nadbystrzycka 36, 20-618 Lublin, Poland

• https://orcid.org/0000-0003-0604-5587

autor

Winiarski Grzegorz

• Mechanical Engineering Faculty, Lublin University of Technology, ul. Nadbystrzycka 36, 20-618 Lublin, Poland

• https://orcid.org/0000-0001-5286-6285

Bibliografia

• 1. Bulzak T., Tomczak J., Pater Z., Majerski K. A Comparative Study of Helical and Cross-Wedge Rolling Processes for Producing Ball Studs. Materials 2019; 12(18): 1–11.
• 2. Samołyk G., Winiarski G., Gontarz A. A cold forging process for producing thin-walled hollow balls from tube using a plastic insert. International Journal of Advanced Manufacturing Technology 2020; 108: 1429–1446.
• 3. Bulzak T., Majerski K., Tomczak J., Pater Z., Wójcik Ł. Warm skew rolling of bearing steel balls using multiple impression tools. CIRP Journal of Manufacturing Science and Technology 2022; 38: 288–298.
• 4. Wójcik Ł., Pater Z., Bulzak T., Tomczak J., Lis K. A Comparative Analysis of the Physical Modelling of Two Methods of Balls Separation. Materials 2021; 14(23): 1–20.
• 5. Skrochocki D., Tomczak J. Numerical simulationof rotary compression process of hollow balls. Strength of Materials 2016; 48(4): 583–591.
• 6. Tomczak J., Pater Z., Bulzak T.A theoretical and experimental analysis of rotary compression of hollow forging formed over a mandrel. Strength of Materials 2017; 49(4): 555–564.
• 7. Samołyk G., Winiarski G. Selected aspects of a cold forging process for hollow balls. International Journal of Advanced Manufacturing Technology 2022; 119 (3–4): 2479–2494.
• 8. Augustin C., Hungerbach W. History and Produc- tion of Hollow Spheres. Multifunctional Metallic Hollow Sphere Structure 2009; EM: 5–30.
• 9. Graf M., Härtel S., Binotsch C., Awiszus B. Forging of lightweight hybrid metallic-plastic components. Procedia Engineering 2017; 184: 497–505.
• 10. Wang L., Li M., Zhao L., Guo Y. Research on a wrinkle-free forming method using low-melting alloy for sheet metal. International Journal of Advanced Manufacturing Technology 2018; 99(9–12): 3065–3075.
• 11. Alhussainy F., Sheikh M., Hadi M. Behaviour of small diameter steel tubes under axial compression. Structures 2017; 11: 155–163.
• 12. Rots J.G., Hoogenboom P.C., van der Meer F.P., Borgart I. Local Buckling Analysis of Thin-Wall Shell Structures. Master Thesis Project 2015; Delft University of Technology: 1–137.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).