Experimental evaluation and FE simulation of thermal conditions at tool surface during cooling and deformation phases in hot forging operations

Bariani, Paolo Francesco; Berti, Guido; Negro, T. Dal; Masiero, Stefano

doi:10.1016/s0007-8506(07)61503-0

Cited by 22 publications

(9 citation statements)

References 14 publications

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“…8. Bariani et al [21] have also studied cooling and lubrication efficiency in hot forging by combined experimental and numerical analysis determining optimum geometric configuration of spraying system and minimum quantity coolant.…”

Section: Warm and Hot Forgingmentioning

confidence: 99%

Environmentally benign tribo-systems for metal forming

et al. 2010

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The growing awareness of environmental issues and the requirements to establish solutions diminishing the impact on working environment as well as external environment has initiated ever increasing efforts to develop new, environmentally benign tribological systems for metal forming. The present paper gives an overview of these efforts substituting environmentally hazardous lubricants in cold, warm and hot forging as well as sheet forming and punching/blanking by new, less harmful lubricants and furthermore describes other more generic measures directed towards the same goal such as development of anti-seizure tool materials and coatings and application of structured workpiece and tool surfaces.

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Section: Warm and Hot Forgingmentioning

confidence: 99%

Environmentally benign tribo-systems for metal forming

et al. 2010

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“…2 (right). This geometry was chosen as the thickness variations in the final section, the consequent distributions of contact pressure and sliding velocity at the interface, and the high surface extension involved are typical of actual industrial processes [21]. The Ti-6Al-4V billets were 30 mm diameter and 50 mm long cylinders.…”

Section: Methodsmentioning

confidence: 99%

Phase evolution in hot forging of dual phase titanium alloys: Experiments and numerical analysis

Bruschi

Buffa

Ducato

et al. 2015

Journal of Manufacturing Processes

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“…The forging of a blade airfoil section was chosen as an ideal case because of the thickness variations in the final section, the consequent distributions of contact pressure and sliding velocity at the interface, and the high surface extension involved that is typical of industrial forging processes [10]. To properly calibrate the FE model, a variety of material testing and physical simulation experiments coupled with inverse analysis techniques was carried out: among them (1) single-step hot compression tests to generate rheological data in the range of temperatures and strain rates typical of the hot forging process, (2) hot ring compression tests to identify the friction factor, (3) hot forging laboratory experiments conducted under plane-strain conditions at various press stiffnesses to record the temperature field inside the dies during forging and cooling stages, and (4) inverse analysis runs to identify the variation of the heat transfer coefficient at the die-workpiece interface from the above mentioned lab experiments (an example of interface temperatures values is reported on the left part of Fig.…”

Section: Models Implemented Into Fe and Critical Aspects In Materials mentioning

confidence: 99%

Critical issues in the simulation of hot forming operations

Bariani

Bruschi

Ghiotti

2010

Prod. Eng. Res. Devel.

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The paper deals with the correlations that can be established in the numerical simulation of manufacturing process chains among the process parameters, micro- structure evolution, and properties of the final product. With the focus on process chains applied to bulk and sheet metal parts where deformation is carried out in hot working conditions, the paper illustrates through three application cases the role that the analysis of the microstructure evolution plays in the process chains simulations and, in particular, in enhancing the capabilities of the models that are currently implemented in commercial FE codes for predicting the properties of the final part

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Experimental evaluation and FE simulation of thermal conditions at tool surface during cooling and deformation phases in hot forging operations

Cited by 22 publications

References 14 publications

Environmentally benign tribo-systems for metal forming

Environmentally benign tribo-systems for metal forming

Phase evolution in hot forging of dual phase titanium alloys: Experiments and numerical analysis

Critical issues in the simulation of hot forming operations

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