Influence of the reclaim addition to the moulding sand matrix obtained in the ALPHASET technology on the emission of gases - comparison with moulding sand with furfuryl resin
PBN-AR
Instytucja
Wydział Odlewnictwa (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Archives of Foundry Engineering
ISSN
1897-3310
EISSN
2299-2944
Wydawca
Polish Academy of Sciences. Commission of Foundry Engineering
DOI
Rok publikacji
2015
Numer zeszytu
1
Strony od-do
121--125
Numer tomu
15
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.4
Słowa kluczowe
EN
ecology
innovatory materials
modern technologies
Streszczenia
Język
EN
Treść
This study focuses on the ALPHASET process of mould making (Ester-Cured Alkaline Phenolic No-Bake). The cross – linking of alkaline phenolic resole resin by adding at least one kind of organic esters is the secondary popular system (after the technology of molding sands with furfuryl resins) with the advantages including low odour, virtually no smoke, easy to stripping, good finishing, low veining, minimal erosion, and very good hot strength. The phenolic resoles used in the system are prepared typically by reacting 30-55% formaldehyde solution with less phenol using a strong alkali catalyst, such as sodium hydroxide or potassium hydroxide at the temperatures of below 110<sup>o</sup>C (pH > 7). After removing parts of water this yields a thermal set phenolic resin solution with solid content 50-70%. In order to significantly increase strength and to improve the moisture and humidity resistance of sand mould, it is necessary to mix a little silence solution addition with resin binder (about 0.1 – 0.3% based on the amount of resin binder).
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:089515