scholarly journals Influence of the inicial porous preform shape on the deformed state evolution and force parameters of the forging process in a semi-closed die

2020 ◽  
Vol 88 (1) ◽  
pp. 49-57
Author(s):  
G. Bagliuk ◽  
S. Kyryliuk
Keyword(s):  
Forging Process ◽  
Porous Preform ◽  
State Evolution ◽  
Deformed State ◽  
Preform Shape

Orbital Forging of a Ti6Al4V Alloy Jaw Coupling Sleeve

2014 ◽  
Vol 622-623 ◽  
pp. 1228-1234
Author(s):  
Grzegorz Samołyk
Keyword(s):  
Titanium Alloy ◽  
Numerical Investigation ◽  
Fem Simulation ◽  
Final Part ◽  
Optimal Conditions ◽  
Agricultural Industry ◽  
Forging Process ◽  
Hollow Part ◽  
Preform Shape ◽  
Orbital Forging

The paper presents selected results of a numerical investigation of the orbital forging process for producing a hollow part. This part is a jaw coupling sleeve made of titanium alloy, widely used in the agricultural industry. The FEM simulation was performed based on the following assumptions: (i) the orbital forging process is conducted under hot conditions using an industrial press of MCOF type and (ii) the final part is formed from a special hollow preform. The preform shape was selected such to ensure optimal conditions of the orbital forging process. The aim of the investigation was to identify phenomena which occur during the orbital forging process. The results obtained are thoroughly examined and described.

Application of a Forming Limit Concept to the Design of Powder Preforms for Forging

1975 ◽  
Vol 97 (2) ◽  
pp. 121-125 ◽  
Author(s):  
C. L. Downey ◽  
H. A. Kuhn
Keyword(s):  
Lateral Flow ◽  
Full Density ◽  
Forming Limit ◽  
Preform Design ◽  
Design Technique ◽  
Cold Forming ◽  
Limit Concept ◽  
Forging Process ◽  
Metallurgical Structure ◽  
Preform Shape

The soundness of the metallurgical structure and the associated strength of a forged powder preform material increase with increasing lateral flow during the forging process. Unconstrained lateral flow, however, enhances the possibility of fracture during deformation. In this paper, a preform design technique is presented that provides the preform shape and dimensions for forging a part to full density with a sound metallurgical structure but without fracture. The basis of the approach is a forming limit concept developed previously for cold forming processes. Application of the technique is demonstrated through design of the preform for forging a pulley blank consisting of a flange, rim and hub.

Study of the strained-deformed state of a nonunion fracture model of the distal femoral metaepiphysis in different variants of its fixation

2011 ◽  
Vol 0 (4) ◽  
pp. 72
Author(s):  
Grigoriy Golka ◽  
Anton Bilostotskiy ◽  
Igor Subbota ◽  
Valeriy Sukhoveckiy ◽  
Oleg Fadeev
Keyword(s):  
Fracture Model ◽  
Deformed State

MANUFACTURE INVESTIGATION OF CARTRIDGE WITH BOTTOM-MOST PART FLANGE BY DIRECT EXTRUSION WITH COUNTERPUNCH. REPORT 13. DETERMINATION OF DEFORMED STATE UNDER STRAITENED EXTRUSION IN FOURTH CENTRAL AREA OF PLASTIC DEFORMATION

2020 ◽  
Vol 0 (4) ◽  
pp. 43-51
Author(s):  
A. L. Vorontsov ◽  
◽  
I. A. Nikiforov ◽  
Keyword(s):  
Plastic Deformation ◽  
Plastic Flow ◽  
Central Area ◽  
Direct Extrusion ◽  
Deformed State ◽  
Cumulative Deformation ◽  
The Given ◽  
General Method

Formulae have been obtained that are necessary to calculate cumulative deformation in the process of straitened extrusion in the central area closed to the working end of the counterpunch. The general method of plastic flow proposed by A. L. Vorontsov was used. The obtained formulae allow one to determine the deformed state of a billet in any point of the given area. The formulae should be used to take into account the strengthening of the extruded material.

FEATURES OF THE STRESSED-DEFORMED STATE OF THE SIDE BREEDS IN THE ASSESSMENT OF THE OPERATIONAL STATE OF MINING OPERATIONS

2019 ◽  
pp. 53-64 ◽  
Author(s):  
Vladimir Gogo ◽  
◽  
Alexander Kipko ◽  
Nikolay Vlasenko ◽  
Yuliia Simonova ◽  
...  
Keyword(s):  
Mining Operations ◽  
Deformed State

Reflection of a longitudinal travelling wave from the notch in a rod plunged into viscous liquid

2010 ◽  
Vol 7 ◽  
pp. 129-142
Author(s):  
M.A. Ilgamov ◽  
A.G. Khakimov
Keyword(s):  
Inverse Problem ◽  
Viscous Liquid ◽  
Travelling Wave ◽  
Observation Point ◽  
Reflected Waves ◽  
Damping Characteristics ◽  
Deformed State ◽  
Using Data ◽  
Surrounding Liquid

The article investigates the reflection of a longitudinal damped travelling wave from the transverse notch and its movement along an infinite rod plunged into viscous liquid. The simplest model for the stress deformed state in the notch zone is applied. The solution is found to depend on the parameters of the liquid and damping characteristics in the material of the rod and the surrounding liquid. The solution to the inverse problem makes it possible to define the coordinate of the notch and the parameter that contains its depth and length using data on both the incident and reflected waves at the observation point.

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