Theoretical Modelling of Metallurgical Defect Closing-Up Processes During Forming a Forging

Banaszek, G.; Berski, S.; Dyja, H.; Kawałek, A.

doi:10.1016/s1006-706x(13)60165-x

Cited by 17 publications

(14 citation statements)

References 4 publications

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“…The first stage of engineering a technological forging process is the proper selection of shape and dimension parameters of the dies. The geometric shape and dimensions of the die forging tools were selected based on a literature study for the purposes of the research paper subject and previous studies conducted at the Department of Plastic Working and Safety Engineering of the Czestochowa University of Technology [ 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”

Section: Open Die Forging and Shaped Die Forging Toolsmentioning

confidence: 99%

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Analysis of the Open Die Forging Process of the AZ91 Magnesium Alloy

et al. 2020

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The paper presents the results of numerical modelling of the forging process of magnesium alloy ingots on a hydraulic press with the use of flat and shaped anvils. The use of shaped (rhombic-trapezoid) anvils will affect the uniform distribution of temperature and strain intensity in the entire volume of the forging, causing a number of forging passes, which in consequence will reduce the costs of the blank manufacturing process. However, higher values of the strain intensity were obtained during the deformation of the material in flat anvils. The purpose of the research was to propose assumptions for forging technology of producing a blank from AZ91 alloy with the use of flat and shaped anvils. Numerical examination for AZ91 magnesium alloy was carried out using the Forge®NxT commercial software. The rheological properties of the investigated alloy were determined on the basis of uniaxial compression tests carried out in the Gleeble 3800 metallurgical simulation system. The numerical analysis of the process of forging AZ91 alloy ingots on a press was conducted in the temperature range of 200–400 °C and at several forging passes.

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Section: Open Die Forging and Shaped Die Forging Toolsmentioning

confidence: 99%

“…Main process parameters of the forging operation were selected based on our previous research and source literature [ 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. The upper anvil speed was adopted at V = 8 mm/s, while the lower anvil was stationary.…”

Section: Open Die Forging and Shaped Die Forging Toolsmentioning

confidence: 99%

Analysis of the Open Die Forging Process of the AZ91 Magnesium Alloy

et al. 2020

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“…Use of FEM in metal forming is gaining considerable attention because of the various advantages like less cost of material, a large number of trials in shorter duration and more accuracy. There are many commercially available applications to predict the deformation and other process parameters in metal forming like DEFORM 3D, ANSYS, AFDEX, FORGE, STATISTICA, FEM, Monte Carlo method and many other methods [2]- [6]. There are many factors present in the rolling process which can be simulated and optimized.…”

Section: Introductionmentioning

confidence: 99%

Optimize the Rolling Process Parameters for Material AA1100 using Metal Forming Simulation

2018

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Abstract. Metal forming plays a very important role in the manufacturing. Simulation of manufacturing process aids in the improvement of quality, reduce energy and resource consumption and helps in visualization of the process. The design of experiment helps in optimization of the parameters in any processes. In this paper, Taguchi optimization technique is used to predict the best results for the given inputs such as roller diameter, friction value, velocity of the rollers and percentage reduction to the forming process and get the optimized values for spread, hardness, effective stress, power required, strain rate and torque using the manufacturing simulation software. It is found that the important parameter is percentage reduction affecting the effective stress. Optimal parameters with desirability value of 0.87 have been obtained.

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“…Upsetting and cogging in flat dies is conducted in conditions of non-uniform flow of metal throughout the height of deformed preforms due to the presence of friction forces at the contact surface of the deformed metal with tool [6,7]. Deformation with small reduction helps to preserve the structure of the initial ingot in zones of constrained deformation adjoining to the contact surface of the deformed metal with tool.…”

Section: Introductionmentioning

confidence: 99%

“…intensification the process of developing technological forging operations (cogging) requires information about the stress-strain state (SSS) of the preform material, of semifinished products and forgings, as well as information about the dies system response of appropriate configuration -deformed preform to change the technological parameters [7,9,10] .…”

Section: Introductionmentioning

confidence: 99%

The Influence of Technological Conditions of the Process of Cogging in Flat Dies on the Quality of Two-Phase Titanium Alloys

Dyja

Тukibay

Mashekov

2016

Archives of Metallurgy and Materials

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To create a rational technology of cogging process and to determinate the optimal values of the angles of tilt and single reduction the stress-strain state (SSS) of the blank during cogging in the flat dies was analyzed. By using the finite element method and program MSC.SuperForge quantitative data are obtained and the basic patterns of distribution of SSS, the temperature during the simulation of tilting in flat dies with different angles of tilting and the amount of reduction were established. Sustainable experimental-industrial technology of forging of two-phase titanium alloys was developed and tested.

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Theoretical Modelling of Metallurgical Defect Closing-Up Processes During Forming a Forging

Cited by 17 publications

References 4 publications

Analysis of the Open Die Forging Process of the AZ91 Magnesium Alloy

Analysis of the Open Die Forging Process of the AZ91 Magnesium Alloy

Optimize the Rolling Process Parameters for Material AA1100 using Metal Forming Simulation

The Influence of Technological Conditions of the Process of Cogging in Flat Dies on the Quality of Two-Phase Titanium Alloys

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