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Core-shell particles for use as filler for feeder compositions

A particle, core-shell technology applied in the field of core-shell particles used as fillers for riser materials

Pending Publication Date: 2019-03-15
HUTTENES ALBERTUS CHEM WERKE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this usually does not have the required properties in order to achieve good thermal insulation properties in the finished riser

Method used

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  • Core-shell particles for use as filler for feeder compositions
  • Core-shell particles for use as filler for feeder compositions
  • Core-shell particles for use as filler for feeder compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] In a mixer of type BOSCH Profi 67, 664 g of foamed glass Liaver (standard particle size 0.1 mm to 0.3 mm; Liaver GmbH & Co. KG) were charged as carrier material and filled with 72 g of cold box binder (Hüttenes-Albertus AG). : benzyl ether resin based on Activator 6324 / Gas Resin 7241, the ratio of Activator 6324:Gas Resin 7241 is 1:1) wets evenly. 136 g of calcined kaolin (d50 value=1.4 μm, d10 value=0.4 μm, d90 value=7 μm) were added and the whole was mixed homogeneously. Finally, to harden the adhesive, approximately 0.5 mL of tert-amylamine was added. After a few seconds, the formed core-shell particles exist as loose material for further use.

Embodiment 2

[0105] In a mixer of type BOSCH Profi 67, 640 g of foamed glass Liaver (standard particle size 0.25 mm to 0.5 mm; Liaver GmbH & Co. KG) was charged as carrier material and filled with 72 g of cold box adhesive (Hüttenes-Albertus AG). : benzyl ether resin based on Activator 6324 / Gas Resin 7241, the ratio of Activator 6324:Gas Resin 7241 is 1:1) wets evenly. 160 g of calcined kaolin (d50 value=1.4 μm, d10 value=0.4 μm, d90 value=7 μm) were added and the whole was mixed homogeneously. Finally, to harden the adhesive, approximately 0.5 mL of tert-amylamine was added. After a few seconds, the formed core-shell particles exist as loose material for further use.

Embodiment 3

[0107] In a mixer of type BOSCH Profi 67, 664 g of Poraver foam glass (standard particle size 0.1-0.3; Dennert Poraver AG) was charged as carrier material and filled with 72 g of cold box binder (Hüttenes-Albertus company: based on activated The benzyl ether resin of agent 6324 / gas resin 7241, the ratio of activator 6324:gas resin 7241 is 1:1) wets evenly. 136 g of calcined kaolin (d50 value=1.4 μm, d10 value=0.4 μm, d90 value=7 μm) were added and the whole was mixed homogeneously. Finally, to harden the adhesive, approximately 0.5 mL of tert-amylamine was added. After a few seconds, the formed core-shell particles exist as loose material for further use.

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Abstract

The invention relates to core-shell particles for use as a filler for feeder compositions for producing feeders, comprising: (a) a core, which has one or more cavities and a wall enclosing said cavities, the core (a) having an average diameter within the range from 0.15 to 0.45 mm; (b) a shell enclosing the core and consisting of or comprising (b1) particles comprising or consisting of a materialfrom the group consisting of calcined kaolin or cordierite, the particles (b1) having a d10 value of at least 0.05 [Mu]m and a d90 value of at most 45 [Mu]m; and (b2) a binder which binds the particles (b1) to each other and to the core (a).

Description

technical field [0001] The invention relates to a core-shell particle for use as a filler for riser materials for the manufacture of risers, a corresponding pourable filling material comprising a plurality of Core-shell particles, a method for producing core-shell particles according to the invention or pourable filler materials according to the invention, corresponding riser materials and corresponding risers and corresponding applications. Further subjects of the invention emerge from the following description and the appended claims. Background technique [0002] The term "riser" within the scope of the present application includes not only riser housings, riser sleeves and riser caps, but also thermal pads. [0003] During the production of metal molded parts in a foundry, liquid metal is filled into molds and solidified there. The solidification process is associated with a reduction in the volume of the metal, so risers, ie open or closed spaces in or at the casting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/00
CPCB22C1/00B22C1/02B22C9/088B22C1/18B22C9/08
Inventor 桑德拉·莱曼克劳斯·里曼尼尔斯·齐默尔赫尔曼·利伯于尔根·许贝特
Owner HUTTENES ALBERTUS CHEM WERKE
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