An innovative method for forming balls from scrap rail heads

• Autorzy: Pater Z. , Tomczak J. , Bulzak T.

Identyfikatory

DOI

10.12913/22998624/64005

• Języki publikacji: EN

Abstrakty

EN

The paper describes a new method for forming grinding media balls from scrap rail heads. This forming method involves the following operations: cutting the rail head to the desired length combined with lateral pressing of the produced workpiece; flashless die forging and sizing of balls in a helical impression. The proposed method was verified by numerical simulation which involved the modeling of a forming process for producing 80 mm diameter balls. As a result of the modeling, it was possible to examine the changes in the workpiece shape during each forming operation, the variations in loads and torques, as well as the distribution of temperatures enabling performing another forming operation, i.e. quenching. The results confirm that the designed method can be used to produce balls.

Słowa kluczowe

EN

die forging; balls; 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: 2016
• Tom: Vol. 10, nr 31
• Strony: 151--157
• Opis fizyczny: Bibliogr. 15 poz., fig.

Twórcy

autor

Pater Z.

• Department of Mechanical Engineering, Lublin University of Technology, 36 Nadbystrzycka St., 20-618 Lublin, Poland

autor

Tomczak J.

• Department of Mechanical Engineering, Lublin University of Technology, 36 Nadbystrzycka St., 20-618 Lublin, Poland

autor

Bulzak T.

• Department of Mechanical Engineering, Lublin University of Technology, 36 Nadbystrzycka St., 20-618 Lublin, Poland

Bibliografia

• 1. Luty W.: Metaloznawstwo i obróbka cieplna stali łożyskowych. Wyd. WNT, Warszawa 1980.
• 2. Pater Z., Tomczak J.: Walcowanie śrubowe kul do młynów kulowych. Wyd. Politechniki Lubelskiej, Lublin 2012.
• 3. Pater Z., Tomczak J., Bartnicki J., Lovell M.R., Menezes P.L.: Experimental and numerical analysis of helical-wedge rolling process for producing steel balls. International Journal of Machine Tools & Manufacture, 67, 2013, 1-7.
• 4. Pater Z., Gontarz A., Weroński W.: Cross-wedge rolling of balls. Steel Research International. “Special edition: Metal Forming 2008”, 1, 2008, 369-374.
• 5. Pater Z.: Multi-wedge cross rolling of balls. Journal of Iron and Steel Research International, 20 (10), 2013, 46-50.
• 6. Pater Z.: New methods of steel ball rolling. International Journal of Materials & Product Technology, 47 (1/2/3/4), 2013, 12-22.
• 7. Pater Z.: Method for cross rolling of products in the shape of balls, in particular out of scrap railway rail heads. EU Patent nr EP2537605 B1, 2014.
• 8. Pater Z.: Method for transverse rolling of ball products, in particular out of scrap railway rail heads, using flat tools. EU Patent nr EP2540409 B1, 2014.
• 9. Pater Z., Tomczak J.: Sposób kształtowania kul. Zgłoszenie patentowe P.403989, 2013.
• 10. Pater Z., Tomczak J., Bulzak T.: Numerical analysis of the skew rolling process for main shafts, Metalurgija, 54 (4), 2015, 627-630.
• 11. Pater Z.: Analysis of the Helical-Wedge Rolling Process for Producing a Long Stepped Shaft. Key Engineering Materials, 622-623, 2014, 893-89.
• 12. Qiana D., Maoa H., Dengb J., Yue J.: Processing optimization for large spherical valve body based on FE simulation. Procedia Engineering, 81, 2014, 2481–2487.
• 13. Cao Q., Hua L., Quian D.: Finite element analysis of deformation characteristics in cold helical rolling of bearing steel-balls. Journal of Central South University, 22 (2), 2015, 1175-1183.
• 14. Qian D., Pan Y.: 3D coupled macro–microscopic finite element modelling and simulation for combined blank-forging and rolling process of alloy steel large ring. Computational Materials Science, 70, 2013, 24-36.
• 15. Berti G.A., Quagliato L., Monti M.: Set-up of radial-axial ring-rolling process: Process worksheet and ring geometry expansion prediction, International Journal of Mechanical Sciences, 99, 2015, 58–71.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.