Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Kukhar Volodymyr"'
Improvement of upsetting process of four-beam workpieces based on computerized and physical modeling
Autor:
Markov Oleg E., Kukhar Volodymyr V., Zlygoriev Vitalii N., Shapoval Alexander A., Khvashchynskyi Anton S., Zhytnikov Roman U.
Publikováno v:
FME Transactions, Vol 48, Iss 4, Pp 946-953 (2020)
The method of upsetting of large ingots has been investigated in this work. The proposed method consists in upsetting of profiled workpieces with concave faces. An angle of the concave faces was 150°. A relative depth of the concave faces has been v
Externí odkaz:
https://doaj.org/article/27452430e5d04e98a5a195c4f5cdf415
Publikováno v:
E3S Web of Conferences, Vol 280, p 07017 (2021)
The process of thermo-mechanically controlled rolling in the conditions of Steckel mill of Ferriera Valsider plant was developed for the first time for hot-rolled coils in the sizes of 12 mm × 1510 mm from steel of X65 grade for further production o
Externí odkaz:
https://doaj.org/article/7af52d4ba3fb478c8c313c17c7c036e4
Publikováno v:
E3S Web of Conferences, Vol 284, p 06005 (2021)
The paper’s authors researched the defects correction for RSt 34-2 (1.0034) steel wire, obtained as result of its overheating at 1140...1160 °C. Instead of the re-heat treatment method, the authors proposed five cold drawing, annealing and overhea
Externí odkaz:
https://doaj.org/article/c3f539de37ec4f65b1332b64da02c7c7
Publikováno v:
E3S Web of Conferences, Vol 234, p 00079 (2021)
The paper implements a method for analyzing the stress-strain state of rectangular hollow sections (RHS) by finite-element modeling (FEM) of tests for three-point bending and torsion. Design schemes, 3-D solid-state and deformable models have been de
Externí odkaz:
https://doaj.org/article/937e619d1ca14caa9f060694fc8eeb48
Publikováno v:
E3S Web of Conferences, Vol 164, p 14004 (2020)
Research was conducted to determine the effect of lubricants on stress and strain in the contact of metal surfaces. Experiments were carried out on the introduction of a fixed and moving indenter in contact with a dry and lubricated surface.The steel
Externí odkaz:
https://doaj.org/article/577a4649ab2641cd9d8147350ee5e2be
Publikováno v:
E3S Web of Conferences, Vol 135, p 01002 (2019)
The authors presented in the article an analytical model of superplastic forming of spherical shells by pressure of the gas (gaseous phase) created upon sublimation of sublimate agent. Sublimate was placed in a hermetic cavity between the workpiece a
Externí odkaz:
https://doaj.org/article/d8a1a4c34af540aa8e32c1f1b5beb82e
Publikováno v:
E3S Web of Conferences, Vol 135, p 01066 (2019)
A significant factor, which leads to the discrepancy of the final sizes of the bent sheet parts to their drawings is the springing of the sheet blank during bending. At the same time, the springing during multi-pass bending is not sufficiently studie
Externí odkaz:
https://doaj.org/article/dd9e5e58048c407090c5d102ead57bd8
Publikováno v:
E3S Web of Conferences, Vol 110, p 01048 (2019)
Tests on the dependence of glues shear strength on: gluing temperature, keeping time before testing, cooling environment, surface roughness, surface conditions, temperature and time of drying on air and in drying oven were carried out to select prope
Externí odkaz:
https://doaj.org/article/5e1181fdbd3947c2bd4bec4d337a6cbc
Publikováno v:
E3S Web of Conferences, Vol 110, p 01001 (2019)
The review of cold rolling mills used for the production of tinplate and thin tinplate in the world is presented. World tinplate production is characterized by the desire to reduce the thickness of its steel base. In connection with the variety of ti
Externí odkaz:
https://doaj.org/article/916e6289e7bb4d12af9f8b06b386aa7c
Publikováno v:
MATEC Web of Conferences, Vol 239, p 06006 (2018)
The article is devoted to superplastic forming of non-uniformly heated sheet blanks from aluminum alloy AMg6M. To create an uneven temperature field over the surface of the blank, coatings made of sublimated substances were used from at temperatures
Externí odkaz:
https://doaj.org/article/6d20e4b3369a44ada9cf2a28baa670b5