KSHP. OMD №9-2013

Vorontsov A.L., Karpov S.M., Stupnikov V.P.

Strain State of a Blank at Plane Extrusion with Non-coaxial Arrangement of Punch and Die.
Part 3. Taking hardening into account

Solution of the task of determination of strain state of a blank at plane extrusion of U-shaped carriers with non-coaxial arrangement of a punch and a die is presented.
Key words: extrusion; non-coaxial arrangement of a punch and a die; plane strain state; cumulative deformations; strengthening.

Radkevich M.M., Fomin D.Yu.

Calculation of Stamping Force for Forged Pieces of Elongated Shape when Selecting the Equipment

Finite element modeling has been conducted with the use of Simufact (MSC. Superforge) software package for the open stamping process of forged workpieces manufactured from 45 and 45X steel using crank hot-stamping machines (CHSM) within the temperature range of 800–1200 ?С. Comparative analysis of the modeling results combined with the calculation results of formulas of the common stamping force for CHSM provided the review of formulas adjustment options enabling the optimization of primary stamping equipment selection.
Keywords: open stamping; long forged workpiece; stamping force; finite element modeling.

Protsiv Yu.V., Protsiv I.Yu.

Features of Manufacturing Rolling Welded Ring Blanks and Calculation of their Parameters

Technological features examination of manufacturing rolling welded ring blanks out of profiled preforms. Developed a method of calculating blanks main sizes. The article demonstrates both economic and qualitative advantages of rolling welded ring blanks as against common welded ring blanks.
Keywords: welded ring blanks; rolling; degree of strain; macrostructure; microstructure; mechanical properties.

Kochetkov A.V., Gnit'ko V.B., Ermolaev V.I., Ermolaeva V.V.

Characteristics of the Bending with Stretching Process Implementation in Aircraft Building

Study on the characteristics of the bending with stretching process implementation in aircraft building. The study demonstrates the efficiency of using materials-processing robots for bending with stretching.
Keywords: bending with stretching; aircraft building; forming.

Poksevatkin M.I., Treschyotkin E.V., Skoryh S.Yu.

Algorithmization of Closed Stamping of Products without Stamping Bevels

A method of closed stamping of products without stamping bevels has been developed and a design algorithm for the current products manufacturing method has been proposed.
Keywords: stamping bevel; closed stamping; forged workpiece; metal discard; forged workpiece cost price; design algorithm.

Lomberg B.S., Bubnov M.V., Bakradze M.M., Arbina V.P.

Manufacturing forged disks for gas turbine engines using heat-resistant alloy

A technology of manufacturing forged disks has been developed with the use of computer simulation for trendsetting gas turbine engines and plants built with the high-alloy heat-resistant nickel composition. The technology has been tested in production conditions.
Keywords: heat-resistant alloy; ingot homogenizing; computer simulation; disks stamping.

Shinkarenko O.M., Korchak E.S.

Calculation of Crank Press-forging Machines Activation Systems

Case study on the friction clutches and brakes design characteristics of crank press-forging machines (PFM) activation systems. The study outlines a method of systems calculation and main parameters selection. It also cites practical advices on how to use the calculation results when designing PFM of various rated forces.
Keywords: crank press-forging machines; clutch; brake; pads; fillers.

Stepanov B.A., Soubich V.N., Shestakov N.A.

Purpose-designed Screw Press for Stamping Axisymmetric Forged Products with Torsion

Design examination of the screw press equipped with a rotating die holder used for stamping with torsion. Press design characteristics enabling optimal stamping modes have been defined. Calculations of upsetting circular disks with torsion have been accomplished.
Keywords: upsetting with torsion; screw press; screw thrust bearing; compound flywheel.

Markov O.E., Zhbankov Ya.G., Shvets A.A.

The Effect of Short Ingots Profiling on Stress-strain State and Axial Defects Elimination when Forging Plates

Plates forging patterns implementing prerequisite preforms profiling with the wedge dies have been studied using finite element modeling. The study revealed forging patterns enabling even strain distribution, highest compression stress in the axial area of preforms and axial defects elimination.
Keywords: forging; axial defects; dies; finite element modeling; degree of strain; stress.

Vlasov A.V., Dmitrieva A.Ya.

Defining Optimal Parameters of Preforms Hardening Process when Applying Cold Radial Forging and a Rhombic Tool

The article proposes a method of predicting mechanical properties of preforms after the cold radial forging treatment, based on the modeling of the forging process. It outlines the calculation results of a rhombic tool optimal parameters and technologic modes of cold radial forging, allowing the production of forged preforms with higher mechanical properties.
Keywords: radial forging; modeling; prediction of mechanical properties; rhombic die; regression model.

Pankratov D.M., Valiev A.M., Shibakov R.V.

Method of Designing a Single-use Deforming Tool for the Reclamation of Parts worn Elements by Piercing

Study on the main stages in designing a single-use deforming tool applied for the reclamation of parts worn elements allowing for the peculiarities of metal flow at piercing.
Keywords: parts reclamation; punch; piercing; annular gap; permanent connection.