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公开(公告)号:EP3727722A1
公开(公告)日:2020-10-28
申请号:EP18826293.5
申请日:2018-12-18
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公开(公告)号:EP3630701A1
公开(公告)日:2020-04-08
申请号:EP18728150.6
申请日:2018-05-30
发明人: LEHMANN, Sandra , RIEMANN, Klaus , ZIMMER, Nils , LIEBER, Hermann , HÜBERT, Jürgen , SOLA, Fabio , MUSHARDT, Heike
IPC分类号: C04B28/24
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公开(公告)号:EP3439811A1
公开(公告)日:2019-02-13
申请号:EP17718493.4
申请日:2017-04-10
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公开(公告)号:EP3419777A1
公开(公告)日:2019-01-02
申请号:EP17709369.7
申请日:2017-02-17
发明人: LADÉGOURDIE, Gérard , LEHMANN, Sandra , LIEBER, Hermann , RIEMANN, Klaus , ZIMMER, Nils , HÜBERT, Jürgen , DÖRSCHEL, Markus , DONNER, Bernd , NITSCH, Ursula
IPC分类号: B22C1/20
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公开(公告)号:EP3846952A1
公开(公告)日:2021-07-14
申请号:EP19765446.0
申请日:2019-09-05
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公开(公告)号:EP3630702A1
公开(公告)日:2020-04-08
申请号:EP18728151.4
申请日:2018-05-30
发明人: LEHMANN, Sandra , RIEMANN, Klaus , ZIMMER, Nils , SOLA, Fabio , GÖTZ, Andreas
IPC分类号: C04B30/00
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公开(公告)号:EP3383565A1
公开(公告)日:2018-10-10
申请号:EP16804802.3
申请日:2016-12-01
IPC分类号: B22C1/20
CPC分类号: B22C1/2273 , B22C1/02 , B22C1/20 , B22C9/088 , B22D7/10
摘要: Disclosed is a method for producing a feeder element for the foundry industry, comprising the following steps: (a) producing composite particles which have a grain size of less than 2 mm, determined by means of screening, in a matrix encapsulation method, comprising the following steps: (a1) producing drops of a suspension from at least the following start materials: (i) one or more refractory substances chosen from the group consisting of refractory solids and precursors for refractory solids, (ii) one or more density-reducing substances chosen from the group consisting of light-weight fillers which have a respective bulk density in the range of 10 to 350 g/l, blowing agents and pyrolyzable fillers, (iii) a solidifiable fluid as continuous phase; (a2) solidifying the solidifiable fluid so that the drops harden to form hardened drops, and the refractory substance(s) and the density-reducing substance(s) are encapsulated in the hardening continuous phase; (a3) treating the hardened drops so that said composite particles result; (b) mixing the composite particles produced in step (a) with a binding agent and, optionally, further components to form a feeder mass; (c) shaping and curing of the feeder mass to form a feeder element. In addition, disclosed is the use of a matrix encapsulation method for producing composite particles and the use of sealed composite particles and a method for producing refractory composite particles and the use of same.
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