Bronze Sealing Rings Defects and Ways of its Elimination; Applied Mechanics and Materials; Vol. 379 : Innovation materials and manufacturing technologies, economic aspects in enterprises

Bronze Sealing Rings Defects and Ways of its Elimination; Applied Mechanics and Materials; Vol. 379 : Innovation materials and manufacturing technologies, economic aspects in enterprises

Bibliographic Details
Parent link:Applied Mechanics and Materials: Scientific Journal
Vol. 379 : Innovation materials and manufacturing technologies, economic aspects in enterprises.— 2013.— [P. 82-86]
Main Author: Martyushev N. V. Nikita Vladimirovich
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра материаловедения и технологии металлов (МТМ)
Other Authors: Pashkov E. N. Evgeny Nikolaevich
Summary:Title screen
In the article data about application nanopowder on a structure of coatings of the form are submitted at a casting of lead-tin bronzes. Elimination of gas porosity on a surface bronze cast preparations of high pressure compressors piston rings was the primary goal of such application protectively-dividing coverings. For experimental works mark of multicomponent bronze has been chosen. Its structure includes tin, lead, zinc and nickel. Casting from this bronze received a method of centrifugal molding. Influence of a structure of used protective - separating coating of a foundry core on a surface smoothness was probeed. Was compared action of coatings of a following composition: anti-burning-in coating (a blend of a low dispersible powder of chromium oxide with calcinated vegetable oil); anti-burning-in material ASPF-2/RgU (on the basis a low dispersible powder of graphite and the calcinated vegetable oil); the patent № 2297300 (blend of a ultradispersible powder of dioxide of zirconium with inpowderrial oil. Molding without use of coverings leads porosity depth to 4-5 mm and to a marriage significant amount (to 50 %). Use ASPF-2/RgU completely eliminates welding casting to a casting mold, but porosity on a surface remains. Application of coverings of a casting mold containing in quality of a filler ultradisperse powders oxide metals with low heat conductivity allows in to lower much a roughness and to eliminate gas porosity on a cast surface from lead-tin bronze. A gas time of a surface still remains, but them becomes much less and their form changes. Depth of defects doesn't exceed 1-1,5 mm that doesn't fall outside the limits the admission.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2013
Subjects:
электронный ресурс
труды учёных ТПУ
Online Access:http://dx.doi.org/10.4028/www.scientific.net/AMM.379.82
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=638618

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