scholarly journals Backward extrusion of pipe workpieces from non-ferrous alloys with a cone-shaped punch

2021 ◽  
pp. 57-60
Author(s):  
A. A. Pasynkov ◽  
V. I. Tregubov ◽  
O. I. Boriskin
Keyword(s):  
Ferrous Alloys ◽  
Backward Extrusion

Gigacycle fatigue of ferrous alloys

1999 ◽  
Vol 22 (8) ◽  
pp. 667-672 ◽  
Author(s):  
Wang ◽  
Berard ◽  
Dubarre ◽  
Baudry ◽  
Rathery ◽  
...  
Keyword(s):  
Ferrous Alloys

Dimensionamiento de un horno de fundición por inducción electromagnética y cálculo de los parámetros eléctricos

2019 ◽  
pp. 1-15
Author(s):  
Arnulfo Pérez-Pérez ◽  
Jorge Sergio Téllez-Martínez ◽  
Gregorio Hortelano-Capetillo ◽  
Jesús Israel Barraza-Fierro
Keyword(s):  
Induction Heating ◽  
Power Supply ◽  
Electromagnetic Induction ◽  
Cast Steel ◽  
Electrical Power ◽  
Heating System ◽  
Heating Time ◽  
Ferrous Alloys ◽  
Electromagnetic Induction Heating ◽  
Induction Heating System

In this work, the dimensions of a furnace for melting of ferrous alloys were determined. The furnace has an electromagnetic induction heating system. In addition, the parameters of electrical power supply such as frequency and power were calculated. A 5kg cast steel mass with a density of 7.81 kg / dm3 was proposed. This corresponds to a crucible volume of 0.641 dm3. The frequency was obtained from tables, which take into account the diameter of the crucible, and its value was 1 KHz. The energy consumption was determined with the heat required to bring the steel to the temperature of 1740 K, the energy losses through the walls, bottom and top of the crucible. This value was divided between the heating time (30 minutes) and resulted in a power of 4.5 KW. The development of the calculations shows that the induction heating is an efficient process and allows a fast melting of ferrous alloys.

Estimation of square die backward extrusion forces of bar stock

2020 ◽  
pp. 462-465
Author(s):  
A.A. Pasynkov ◽  
S.N. Larin ◽  
G.A. Nuzhdin
Keyword(s):  
Backward Extrusion ◽  
Nite Element ◽  
Die Extrusion ◽  
Element Method

Тhe results for estimation of the square die extrusion forces of cylindrical billets are presented. The study is performed on the basis of the fi nite element method. The results obtained during the simulation are analyzed statistically. Regression dependences for forces are obtained, with the help of which reverse extrusion studies are performed.

scholarly journals Parameters Selection for Electropolishing Process of Products Made of Copper and Its Alloys

2017 ◽  
Vol 62 (3) ◽  
pp. 1443-1447 ◽  
Author(s):  
T. Maciąg ◽  
J. Wieczorek ◽  
B. Węcki
Keyword(s):  
Vital Role ◽  
Surface Geometry ◽  
Electric Industry ◽  
Ferrous Alloys ◽  
Mechanical Working ◽  
Medical Apparatus ◽  
Mechanical Preparation ◽  
Optimal Current ◽  
Surface Microgeometry ◽  
Time Required

AbstractElectropolishing is electrochemical method used in metal working that has a vital role in production of medical apparatus, in food or electric industry. The purpose of this paper is to determine optimal current parameters and time required for conducting electropolishing process from the perspective of changes of surface microgeometry. Furthermore, effect of different types of mechanical working used before electropolishing on final surface state was evaluated by observation in changes of topography. Research was conducted on electrolytic copper and brass. Analysis of surface geometry and its parameters (Ra, Sa) was used as criterion describing efficiency of chemical electropolishing. Results of the experiment allow for current parameter optimization of electrochemical polishing process for selected non-ferrous alloys with preliminary mechanical preparation of the surface.

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