Mould material mixtures on the basis of inorganic binders, and method for producing moulds and cores for metal casting

A technology of inorganic binders and mold materials, which is applied in the direction of manufacturing tools, casting molding equipment, cores, etc., and can solve the problems of inorganic binders losing meaning

Active Publication Date: 2015-06-24
ASK CHEM LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic binders found their most widespread use during the 1950s and 1960s, but quickly lost their significance with the advent of modern organic binders

Method used

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  • Mould material mixtures on the basis of inorganic binders, and method for producing moulds and cores for metal casting
  • Mould material mixtures on the basis of inorganic binders, and method for producing moulds and cores for metal casting
  • Mould material mixtures on the basis of inorganic binders, and method for producing moulds and cores for metal casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0104] 1. Heat curing

[0105] 1.1. Experiment 1: With the addition of particulate amorphous SiO 2 The strength and core weight vary with the type of

[0106] 1.1.1 Preparation of mold mixture

[0107] 1.1.1.1 Addition of SiO 2

[0108] The quartz sand was placed in the bowl of a Hobart mixer (model HSM 10). While stirring, the binder was subsequently added, the binder mixed intensively with the sand for 1 minute in each case. The types of sand, binders used and the amounts of each added are shown in Table 1.

[0109] 1.1.1.2 Add SiO 2

[0110] Follow the procedure of 1.1.1.1, except that after the binder is added to the mold material mixture, the particulate amorphous SiO 2 , and mix this also for 1 minute. Granular Amorphous SiO 2 The type and amount added are shown in Table 1.

[0111] Table 1 (Experiment 1) Composition of mold material mixture

[0112]

[0113]

[0114] a) alkali metal water glass; molar modulus about 2.1; solids content about 35% by we...

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Abstract

The invention relates to mould material mixtures on the basis of inorganic binders, for producing moulds and cores for metal casting. Said mixtures consist of at least one refractory mould base material, an inorganic binder and amorphous silicon dioxide as an additive. The invention also relates to a method for producing moulds and cores using said mould material mixtures.

Description

technical field [0001] The invention relates to mold material mixtures based on inorganic binders for the manufacture of molds and cores for metal casting, which mold material mixtures consist of at least one refractory basic mold material, an inorganic binder and particulate amorphous silica as an additive. The invention also relates to a method for producing molds and cores using said mold material mixture. Background technique [0002] A casting mold basically consists of a mold or die and a core representing the inverse shape of the casting to be manufactured. The core and mold consist of a refractory material such as quartz sand and a suitable binder which imparts sufficient mechanical strength to the casting after removal from the mould. The refractory mold base material is preferably present in free-flowing form so that it can be filled into a suitable mold cavity and compressed therein. The binder creates a strong cohesion between the particles of the base materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/18
CPCB22C1/18B22C9/12B22C1/181B22C1/186B22C9/02
Inventor D·巴特尔斯H·德特斯A·吉尼耶克D·科赫H·林柯M·奥贝尔莱特O·施密特C·瓦伦霍尔斯特
Owner ASK CHEM LP
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