Reparation of damaged forging dies by hard facing (HF) technology

• Autorzy: Lazic V. , Arsic D. , Nikolic R. R. , Aleksandrovic S. , Milosavljevic D. , Djordjevic M. , Cukic R.
• Języki publikacji: EN

Abstrakty

EN

The forging dies are in exploitation exposed to elevated temperatures and variable impact loads, both compressive and shear. Steels for manufacturing of these tools must endure those loads while maintaining mechanical properties and being resistant to wear and thermal fatigue. For those reasons, the alloyed steels are used for making the forging dies, though they have less weldability, because alloying increases proneness to hardening. Any reparatory hard facing (HF) of the damaged dies would require the specially adjusted technology to the particular piece. In this paper reparatory hard facing of dies used for forging pieces in the automobile industry is considered. Prior to reparatory hard facing of the real tools, numerous experimental hard facings on models were performed. All the model hard facings were done on the same steels which were used for production of the real forging dies. To define the optimal hard facing technology one needs to derive the optimal combination of the adequate heat treatment(s), to select the proper filler metals and the welding procedure. The established optimal HF technology was applied to real forging dies whose service life was further monitored in conditions of exploitation.

Słowa kluczowe

EN

forging dies; hard facing (HF); filler metals (FM); hardness; microstructure

PL

matryce kuźnicze; napawanie; spoiwa; twardość; mikrostruktura

• Wydawca: Oficyna Wydawnicza Stowarzyszenia Menedżerów Jakości i Produkcji
• Czasopismo: Production Engineering Archives
• Rocznik: 2015
• Tom: Vol. 6, No. 1
• Strony: 26--29
• Opis fizyczny: Bibliogr. 15 poz. rys., tab.

Twórcy

autor

Lazic V.

• Faculty of Engineering, University of Kragujevac, Serbia

autor

Arsic D.

• Faculty of Engineering, University of Kragujevac, Serbia

autor

Nikolic R. R.

• Faculty of Engineering, University of Kragujevac, Serbia Research center
• University of Žilina, Univerzitna 1, 010 26 Žilina, Slovakia

autor

Aleksandrovic S.

• Faculty of Engineering, University of Kragujevac, Serbia

autor

Milosavljevic D.

• Faculty of Engineering, University of Kragujevac, Serbia

autor

Djordjevic M.

• Faculty of Engineering, University of Kragujevac, Serbia

autor

Cukic R.

• Faculty of Engineering, University of Kragujevac, Serbia

Bibliografia

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• 10. Marković S., Milović LJ., Marinković A., Lazović T., 2011 Tribological Aspect of Selecting Filler Metal for Repair Surfacing of Gears by Hard facing, "Structural Integrity and Life", 11, pp. 127-130.
• 11. Lazić V., M. Mutavdžić, D. Milosavljević, S. Aleksandrović, B. Nedeljković, P. Marinković, R. Čukić. 2011 Selection of the most appropriate technology of reparatory hard facing of working parts on universal construction machinery. "Tribology in Industry", 33/1, pp. 18-27.
• 12. Lazić V., Ivanović I., Sedmak A, Rudolf R., Lazić M., Radaković Y. 2013 Numerical Analysis of temperature field during hard facing process and comparison with experimental results. "Thermal science" 17/1, pp. S113-S120.
• 13. Mutavdžić M., Čukić R., Jovanović M., Milosavljević D., Lazić V. 2008 Model investigations of the filler metals for regeneration of the damaged parts of the construction mechanization. "Tribology in Industry", 30/3, pp. 3-9.
• 14. Mutavdžić M., Lazić V., Milosavljević D., Aleksandrović D., Nikolić R., Čukić R., Bogdanović G. 2012 Determination of the optimal tempering temperature in hard facing of the forging dies. "Materials Engineering" 19, pp. 95-103.
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