PATENTSCOPE will be unavailable a few hours for maintenance reason on Monday 03.02.2020 at 10:00 AM CET
Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (IN201847023738) METHOD FOR PRODUCING REFRACTORY COMPOSITE PARTICLES AND FEEDER ELEMENTS FOR THE FOUNDRY INDUSTRY CORRESPONDING FEEDER ELEMENTS AND USES

Office : India
Application Number: 201847023738 Application Date: 26.06.2018
Publication Number: 201847023738 Publication Date: 06.07.2018
Publication Kind : A
Prior PCT appl.: Application Number:PCTEP2016079371 ; Publication Number: Click to see the data
IPC:
B22C 1/20
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
C
FOUNDRY MOULDING
1
Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
16
characterised by the use of binding agents; Mixtures of binding agents
20
of organic agents
Applicants: HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung
Inventors: LEHMANN, Sandra
RIEMANN, Klaus
ZIMMER, Nils
LIEBER, Hermann
HÜBERT,Jürgen
Priority Data: 10 2015 120 866.0 01.12.2015 DE
Title: (EN) METHOD FOR PRODUCING REFRACTORY COMPOSITE PARTICLES AND FEEDER ELEMENTS FOR THE FOUNDRY INDUSTRY CORRESPONDING FEEDER ELEMENTS AND USES
Abstract:
(EN) Described is a method for producing a feeder element for the foundry industry, comprising the following steps: (a) producing composite particles having a particle size of less than 2 mm, determined by sieving, in a matrix encapsulation method with the following steps: (a1) producing droplets of a suspension from at least the following starting materials: (i) one or more refractory substances selected from the group consisting of refractory solids and precursors of refractory solids, (ii) one or more density-reducing substances selected from the group consisting of lightweight fillers having a respective bulk density in the range from 10 to 350 g/L, expandants and pyrolysable fillers, (iii) as continuous phase, a solidifiable liquid, (a2) solidifying the solidifiable liquid, so that the droplets harden to hardened droplets and the refractory substance or substances and also the density-reducing substance or substances are encapsulated in the solidifying continuous phase, (a3) treating the hardened droplets, so that the said composite particles result, (b) mixing the composite particles produced in step (a) with a binder and also, optionally, further constituents to give a feeder composition, (c) shaping and curing the feeder composition to give a feeder element. Also described are the use of a matrix encapsulation method for producing composite particles, the use of sealed composite particles, a method for producing refractory composite particles, and the use thereof.
Also published as:
KR1020180090313EP3383565CN108602113US20180345356BR112018011078EA201891302
WO/2017/093371