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- Title
ELECTROSLAG SURFACING OF PARTS, MADE OF HIGH-CHROME CAST IRON, USING CAST IRON SHOT.
- Authors
KUSKOV, Yu. M.; BOGAJCHUK, I. L.; CHERNYAK, Ya. P.; EVDOKIMOV, A. I.
- Abstract
A lot of parts, used in machine building, metallurgy, mining and other industry branches and subjected to different types of wear in service, are manufactured of high-chrome cast irons. After base service the worn-out parts of this type are not subjected to restoration in practice by the known methods of arc surfacing. The present work deals with the possibility of restoration of worn-out parts, manufactured of high-chrome cast iron, using the technology of electroslag surfacing, developed at the E.O. Paton Electric Welding Institute. The peculiar feature of this technology is the application of a special device in surfacing, namely a current-carrying mould, allowing surfacing using a discrete filler material (shot). Here, the capability of «soft» and uniform heating of surface and layer being deposited by a slag, typical of various known methods of electroslag surfacing, the present technology provides a feasibility to produce a fine-grain deposited metal. This contributes to restoration of parts providing high service characteristics. Using the present technology, the experimental restoration electroslag surfacing of high-chrome cast iron layer on worn-out zones of plates of chamber of shotblast unit of «Bduhuis» company and blades of shotblast unit of «Carlo Banfi» company, made of high-chrome cast iron, were carried out. As a surfacing filler material the shot was used of the following chemical composition, wt.%: 2.5 C, 26.2 Cr, 0.7 Si, 0.7 Mn, 1.3 Ni, 0.9 Mo. It was found that the technology of electroslag surfacing using discrete surfacing materials in the form of shot of high-chrome cast iron allows manufacturing quality bimetal products with an optimum combination of deposited metal of high-hard carbides and ductile matrix in the structure.
- Subjects
ELECTROSLAG process; E.O. Paton Electric Welding Institute (Kiev, Ukraine); METALLIC surfaces; BIOCHEMISTRY; BIMETALLIC catalysts; CARBIDES; DUCTILE fractures
- Publication
Paton Welding Journal, 2013, Issue 8, p46
- ISSN
0957-798X
- Publication type
Article