A new process for the forming of a triangular flange in hollow shafts from Ti6Al4V alloy

• Autorzy: Winiarski, G. , Gontarz, A. , Pater, Z.
• Języki publikacji: EN

Abstrakty

EN

This paper presents an innovative process of metal forming of a hollow shaft with a flange of triangular rosette shape. The analyzed part is used in helicopters as drive transmission shaft. This product has to be a monolith; hence, it is inadmissible to connect the flange with a tube. Due to the lack of alternative methods of this part manufacturing, shafts are made by means of machining from full bar, which generates material loss exceeding 90%. The proposed method of the flange metal forming considerably lowers material and labor consumption and guarantees better resistance properties in comparison with shafts made by means of machining. The presented way is based on billet's end expanding freely protruding from a split die. Numerical analysis of the forming process of a shaft from titanium alloy Ti6Al4V was conducted in software DEFORM-3D. On the basis of the analysis results tools were designed for the process experimental verification. Stand tests were made on a three-slide forging press. The results of theoretical and experimental research are convergent and confirm the rightness of the proposed method.

Słowa kluczowe

PL

obróbka plastyczna; stop tytanu; wał napędowy

EN

flanging; hollowed parts; titanium alloy; FEM

• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2015
• Tom: Vol. 15, no. 4
• Strony: 911--916
• Opis fizyczny: Bibliogr. 10 poz., rys., wykr.

Twórcy

autor

Winiarski, G.

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

autor

Gontarz, A.

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

autor

Pater, Z.

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

Bibliografia

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• [2] R. Balendra, Y. Qin, Injection forging: engineering and research, Journal of Materials Processing Technology 145 (2004) 189–206.
• [3] Y. Ma, Y. Qin, R. Balendra, Upper-bound analysis of the pressure-assisted injection forging of thick-walled tubular components with hollow flanges, International Journal of Mechanical Sciences 48 (2006) 1172–1185.
• [4] Y. Qin, R. Balendra, Optimisation of the lubrication for the extrusion of solid and tubular components by injection forging, Journal of Materials Processing Technology 135 (2003) 219–227.
• [5] M.L. Alves, B.P.P. Almeida, P.A.R. Rosa, P.A.F. Martins, End forming of thin-walled tubes, Journal of Materials Processing Technology 177 (2006) 183–187.
• [6] S. Thiruvarudchelvan, M.J. Tan, Collar drawing using a urethane pad, Journal of Materials Processing Technology 147 (2004) 139–144.
• [7] S. Thiruvarudchelvan, M.J. Tan, Investigations into collar drawing using urethane pads, Journal of Materials Processing Technology 191 (2007) 87–91.
• [8] Z. Pater, J. Tomczak, A. Gontarz, Sposób wytwarzania kołnierzy czołowych w kształcie trójramiennej rozety, Biu letyn Urzędu Pat entowego 41 (8) (2013) 11 (in Polish).
• [9] A. Gontarz, Z. Pater, A. Tofil, Numerical analysis of unconventional forging process of hollowed shaft from Ti– 6Al–4V alloy, Journal of Shanghai Jiaotong University (Science) 16 (2) (2011) 157–161.
• [10] A. Tofil, Theoretical and experimental analysis of splitting process without waste of pipe billets from Ti6Al4V alloy, Steel Research International (2012) 59–62 (nr Spec. Ed.).

Identyfikatory

DOI

10.1016/j.acme.2015.01.001