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1. (US20180345356) METHOD FOR PRODUCING REFRACTORY COMPOSITE PARTICLES AND FEEDER ELEMENTS FOR THE FOUNDRY INDUSTRY, CORRESPONDING FEEDER ELEMENTS AND USES

Office : United States of America
Application Number: 15780838 Application Date: 01.12.2016
Publication Number: 20180345356 Publication Date: 06.12.2018
Publication Kind : A1
Prior PCT appl.: Application Number:PCTEP2016079371 ; Publication Number: Click to see the data
IPC:
B22C 1/22
B22C 9/08
B22D 7/10
B22C 1/02
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
22
of resins or rosins
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
C
FOUNDRY MOULDING
9
Moulds or cores; Moulding processes
08
Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
D
CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
7
Casting ingots
06
Ingot moulds or their manufacture
10
Hot tops therefor
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
02
characterised by additives for special purposes, e.g. indicators, breakdown additives
CPC:
B22C 1/02
B22C 1/2273
B22C 9/088
B22D 7/10
Applicants: HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG
Inventors: Sandra LEHMANN
Klaus RIEMANN
Nils ZIMMER
Hermann LIEBER
Jürgen HÜBERT
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: front page image
(EN)

A method for producing a feeder element is described. The method includes (a) producing composite particles having a particle size of less than 2 mm in a matrix encapsulation method with the following steps: (a1) producing droplets of a suspension from at least (i) one or more refractory substances, (ii) one or more of fillers having a 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 droplets with the refractory substance(s) and density-reducing substance(s) are encapsulated therein, (a3) treating the hardened droplets to form composite particles, (b) mixing the composite particles with a binder and, optionally, further constituents to give a feeder composition, (c) shaping and curing the feeder composition to give a feeder element. Also described are a method for producing refractory composite particles and the use of the composite particles.


Also published as:
IN201847023738KR1020180090313EP3383565CN108602113BR112018011078EA201891302
WO/2017/093371