Investigation of new method of large ingots forging based on upsetting of workpieces with ledges

Марков, Олег; Khvashchynskyi, Anton; Musorin, Anton; Markova, Marina A.; Shapoval, Alexander; Hrudkina, Natalia

doi:10.1007/s00170-022-09989-1

Cited by 15 publications

(4 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To overcome this limitation, in recent years, studies of new SPD processes have been conducted in various directions. One of such directions is the development of new deformation schemes of massive workpieces processing during forging [10][11][12], the key feature of which is an increased level of metal processing due to shear and alternating strains. Another direction of research is the development of new deformation schemes for long-length workpieces.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Efficiency of Roll Profiles and Technological Schemes of Deformation of Asymmetric Rolling in Relief Rolls of C11000 Copper Alloy by FEM Simulation

Panin,

Esbolat,

Arbuz

et al. 2024

Modelling and Simulation in Engineering

View full text Add to dashboard Cite

In this paper, finite element simulation of asymmetric rolling in relief rolls of C11000 copper alloy in order to analyze the effectiveness of possible roll profiles and technological schemes of deformation was performed. The scientific innovation of this work lies in determining the patterns of development of stress-strain state parameters for various configurations of rolls, as well as determining the effectiveness of metal processing using various technological schemes. It was found that the use of trapezoidal relief makes it possible to increase the level of metal processing by almost 5 times compared with the use of radial relief. Comparison of technological schemes of deformation showed that deformation with 180° workpiece turning between passes significantly reduces the influence of the asymmetry factor. Deformation without changing the workpiece position between the passes has the opposite effect, and such a scheme significantly increases the influence of the asymmetry factor. Deformation with a transverse workpiece shift for the relief period between passes has the effect of a “golden mean.” The conducted laboratory experiment for lead billet showed that the shape change of lead billet during computer simulation has a high level of convergence with real conditions. At each stage of deformation, the difference in the geometric parameters of the workpiece between the model and the experiment did not exceed 3-5%. When deforming a copper billet, the maximum difference level was 8%, which is the result of the low rigidity of the rolling cage with smooth rolls.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation of the Efficiency of Roll Profiles and Technological Schemes of Deformation of Asymmetric Rolling in Relief Rolls of C11000 Copper Alloy by FEM Simulation

Panin,

Esbolat,

Arbuz

et al. 2024

Modelling and Simulation in Engineering

View full text Add to dashboard Cite

show abstract

“…In addition to the considered SPD processes, which make it possible to obtain small-sized blanks, severe plastic deformation processes are actively developing, which make it possible to process massive blanks. These methods are based on the intensification of shear and alternating strains in forging processes [12][13][14][15][16]. As a result, the initial billets in the form of ingots receive a high level of processing, which leads to intensive grinding of grain throughout the cross section.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modeling of ECAP-Linex Combined Process of Severe Plastic Deformation

Panin

Volokitina

Volokitin

et al. 2023

Modelling and Simulation in Engineering

View full text Add to dashboard Cite

The paper presents theoretical studies of a new deformation process combining the stages of equal-channel angular pressing (ECAP) and the “Linex” scheme. For correct finite element modeling of the process, a technique with sequential input for the calculation of conveyor links is presented. To analyze the efficiency of metal processing, the main parameters of the stress–strain state are considered: equivalent strain, equivalent stress, and average hydrostatic pressure, as well as the deformation force on the main elements of the combined process: pulley, matrix, and conveyor link. To analyze the resulting deformation forces, the stages of pressing in a matrix and compression by a chain conveyor were separately considered. Equations for determining the forces acting on the drive pulley, ECA matrix, and the chain element link were obtained. Comparison of values showed that the force values in the calculation and simulation have a high level of convergence. In all three considered details, the difference value did not exceed 10%. The variational modeling allowed to determine the optimal values of the main technological and geometric parameters of the process.

show abstract

“…In addition to the considered SPD processes, which make it possible to obtain small-sized blanks, severe plastic deformation processes are actively developing to enable the processing of massive blanks. These methods are based on the intensification of shear and alternating strains in forging processes [12][13][14][15][16]. As a result, the initial billets in the form of ingots receive a high level of processing leading to intensive grain refinement throughout the cross-section.…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of the force parameters of the ECAP-Linex combined process

2023

IJEM

View full text Add to dashboard Cite

The paper presents theoretical studies of a new deformation process combining the stages of equalchannel angular pressing (ECAP) and the Linex scheme. To analyse the resulting deformation forces, the stages of pressing in a matrix and compression by a chain conveyor are separately considered. Equations were provided for determining the forces acting on the drive pulley, ECA matrix, and chain element link. A trial calculation and comparative analysis with the previously known rolling-ECAP process showed that the new ECAP-Linex process allows for a stable deformation process with lower forces and a smaller channel junction angle in the matrix. The values obtained by equations are verified with computer simulation using the finite element method in the Deform program. A comparison of values showed that the force values in the calculation and simulation have a high level of convergence. For all three considered parameters, the difference value did not exceed 3%.

show abstract

Investigation of new method of large ingots forging based on upsetting of workpieces with ledges

Cited by 15 publications

References 35 publications

Investigation of the Efficiency of Roll Profiles and Technological Schemes of Deformation of Asymmetric Rolling in Relief Rolls of C11000 Copper Alloy by FEM Simulation

Investigation of the Efficiency of Roll Profiles and Technological Schemes of Deformation of Asymmetric Rolling in Relief Rolls of C11000 Copper Alloy by FEM Simulation

Finite Element Modeling of ECAP-Linex Combined Process of Severe Plastic Deformation

Theoretical study of the force parameters of the ECAP-Linex combined process

Contact Info

Product

Resources

About