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Moulding material mixture, moulds and cores made therefrom, and method of making the same

一种模制材料、混合物的技术，应用在型芯、制造工具、铸造成型设备等方向，能够解决不能达到PU冷芯盒粘合剂强度水平、胺有毒、不愉快气味等问题

Active Publication Date: 2020-03-03
ASK CHEM LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this PU-based adhesive has the disadvantage that the amines used as hardening catalysts are toxic and give off a characteristic, unpleasant odor
[0010] If the strength of the PU cold box adhesive is compared with the CO 2 A comparison of the strength of hardened resole phenolic resins shows that the latter cannot reach the level of strength of PU cold box adhesives, and thus its use is basically limited to simple, solid cores

Method used

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  • Moulding material mixture, moulds and cores made therefrom, and method of making the same
  • Moulding material mixture, moulds and cores made therefrom, and method of making the same
  • Moulding material mixture, moulds and cores made therefrom, and method of making the same

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Experimental program
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Embodiment Construction

[0074] 1. Preparation of Molding Material Mixture

[0075] 1.1 No addition of amorphous SiO 2 Condition

[0076] The quartz sand was added to the bowl of a Hobart company (model HSM 10) mixer. Subsequently, the binder was added with stirring and mixed vigorously with the sand for 1 minute. The types of sand, binders and corresponding additions used are listed in Table 1. Amounts are stated in parts by weight (GT).

[0077] 1.2 Adding amorphous SiO 2 Case

[0078] The difference from the method described in 1.1 is that first the granular amorphous SiO 2 Mix for 1 minute, and then add the binder. Amorphous SiO 2 The type and amount of addition are listed in Table 1.

[0079] Table 1

[0080]

[0081]

[0082] 2. Fabrication of Specimen

[0083] Transfer part of the molding material mixture prepared according to 1.1 and 1.2 to Gieβerei-maschinen AG, Filsen, in the storage room of the H1 core shooter. Store remaining mold material mixture in a carefully sealed ...

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Abstract

The subject of the invention is a molding material mixture for the production of molds and cores for metal castings, the molding material mixture comprising at least one refractory material, a binder based on resole resin and silica. Furthermore, the invention relates to a multi-component system and a method for producing molds and cores by using the molding material mixture as well as molds and cores for metal castings produced according to this method.

Description

technical field [0001] The invention relates to a molding material mixture for producing molds and cores for metal castings, the molding material mixture comprising at least one refractory material, a binder based on resole resin and amorphous silica. Furthermore, the invention relates to a method for producing molds and cores using the molding material mixture and molds and cores for metal castings produced according to this method with hardening of the molding material mixture. Background technique [0002] A foundry mold basically consists of a mold or die and a core, which is the female mold of the casting to be made. These molds and cores generally consist here of a refractory material, such as quartz sand, and a suitable binder which gives the casting mold sufficient mechanical strength after removal from the forming tool. The refractory molding base material is preferably present in loose form, so that after mixing with the binder, the molding base material can be fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/10B22C1/22B22C9/02
CPCB22C1/10B22C1/2253B22C9/02B22C9/123C04B35/14
Inventor 约尔格·克施根克里斯蒂安·普里贝皮埃尔-亨利·瓦斯莱
Owner ASK CHEM LP