Foundry Coatings - ReviewPages 45-53
Gergana Milanova Abstract:
The main purpose of this publication is to present the founding stages of
the foundry industry and its fundamental importance to the engineering
sector. The second focus is to examine the technology of casting in sand
molds and more specifically those based on no-bake process(chemically
hardening). The auxiliary materials used for the production of sand molds
and their importance for the quality of the final part-casting are examined
in detail. Special attention is paid to refractory coatings, and in particular
those with graphite filler, because of their wide application. The main
chemical parameters are presented and the need to study their geometric
and tribological characteristics and their influence on the quality of
manufactured castings is emphasized. Until now, the author of the
publication has studied the micro hardness, roughness, friability and gas
permeability of refractory coatings, for which parameters no previous
information on similar tests has been found. The research carried out was
financed under phd project No. 222ПД0005-05 – TU Sofia, Bulgaria. Keywords: Foundry, Metalcasting, Sand moulds, No-bake process, Graphite, Coatings, Refractory
|
PDF 