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Inorganic binding agent for casting and preparation method thereof

A technology of inorganic binder and liquid binder, which is applied in the direction of casting molding equipment, casting molds, manufacturing tools, etc., can solve the problems of poor fluidity and anti-adsorption of molding sand, achieve good bonding performance, improve fluidity, Enhanced anti-adsorption effect

Active Publication Date: 2018-09-28
CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an inorganic binder for foundry and its preparation method, to solve the problem of poor fluidity and adsorption resistance of the molding sand prepared with the existing inorganic binder

Method used

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  • Inorganic binding agent for casting and preparation method thereof
  • Inorganic binding agent for casting and preparation method thereof

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Embodiment 1

[0026] This embodiment discloses an inorganic binder for casting, including a liquid binder and a solid binder used together, and the mass ratio of the liquid binder to the solid binder is liquid binder: solid binder Binder=80:33.52; the liquid binder includes the following raw materials in parts by mass: 800 parts of phosphoric acid, 32 parts of boric acid, 117.5 parts of aluminum hydroxide, 40 parts of citric acid, 7 parts of magnesium oxide, 175.5 parts of water, C4K 3.5 parts, Z02 1.3 parts; the solid binder includes the following raw materials in mass parts: 16 parts of boric acid, 10 parts of fine powder, 2 parts of zinc oxide, 2 parts of aluminum oxide, 1 part of magnesium oxide, 0.5 parts of graphite, 0.5 parts of polyvinyl alcohol share. Among them, C4K is a sulfonate compound, and Z02 is a polyphosphate compound.

[0027] This embodiment also discloses a preparation method of an inorganic binder for casting, comprising the following steps:

[0028] (1) Weighing raw...

Embodiment 2

[0032] This embodiment discloses an inorganic binder for casting, including a liquid binder and a solid binder used together, and the mass ratio of the liquid binder to the solid binder is liquid binder: solid binder Binder=80:33.52; the liquid binder includes the following raw materials in parts by mass: 800 parts of phosphoric acid, 32 parts of boric acid, 117.5 parts of aluminum hydroxide, 40 parts of citric acid, 7 parts of magnesium oxide, 175.5 parts of water, C4K 3.5 parts, Z02 1.3 parts; the solid binder includes the following raw materials in parts by mass: 16 parts of boric acid, 10 parts of fine powder, 2 parts of zinc oxide, 2 parts of aluminum oxide, and 0.5 part of graphite. Among them, C4K is a sulfonate compound, and Z02 is a polyphosphate compound.

[0033] This embodiment also discloses a preparation method of an inorganic binder for casting, comprising the following steps:

[0034] (1) Weighing raw materials: The liquid binder includes the following raw mat...

Embodiment 3

[0038] This embodiment discloses an inorganic binder for casting, including a liquid binder and a solid binder used together, and the mass ratio of the liquid binder to the solid binder is liquid binder: solid binder Binder=80:33.52; the liquid binder includes the following raw materials in parts by mass: 800 parts of phosphoric acid, 32 parts of boric acid, 117.5 parts of aluminum hydroxide, 40 parts of citric acid, 7 parts of magnesium oxide, 175.5 parts of water; solid The binder includes the following raw materials in parts by mass: 16 parts of boric acid, 10 parts of fine powder, 2 parts of zinc oxide, 2 parts of aluminum oxide, 1 part of magnesium oxide, 0.5 part of graphite, and 0.5 part of polyvinyl alcohol.

[0039] This embodiment also discloses a preparation method of an inorganic binder for casting, comprising the following steps:

[0040] (1) Weigh raw materials: the liquid binder includes the following raw materials in parts by mass: 800 parts of phosphoric acid,...

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Abstract

The invention belongs to the technical field of casting sand binding materials, and particularly discloses an inorganic binding agent for casting and a preparation method of the inorganic binding agent. The inorganic binding agent for casting comprises a liquid binding agent and a solid binding agent which are cooperated for use. The mass ratio of he liquid binding agent to the solid binding agentis 50-100:20-50. The liquid binding agent is prepared from, by mass, 705-900 parts of phosphoric acid, 25-35 parts of boric acid, 100-150 parts of aluminum hydroxide, 32-45 parts of citric acid, 3-8parts of magnesium oxide, 50-250 parts of water, 0-5 parts of C4K and 0-3 parts of Z02, and the solid binding agent is prepared from, by mass, 15-20 parts of boric acid, 10-15 parts of micro powder, 1.3-2.5 parts of zinc oxide, 1.3-2.5 parts of aluminum oxide, 0.6-1.3 parts of magnesium oxide, 0.2-0.6 part of graphite and 0.2-0.6 part of polyvinyl alcohol. By using the technical scheme, the problem that sand obtained through an existing inorganic binding agent is poor in mobility and adsorption resistance can be solved.

Description

technical field [0001] The invention belongs to the technical field of foundry sand bonding materials, and in particular relates to an inorganic bonding agent for casting and a preparation method thereof. Background technique [0002] Binders for foundry can be roughly divided into organic binders and inorganic binders. The organic resin sand is seriously polluted, and irritating gas is released during the pouring process. Castings produced using organic resins can develop burrs, porosity and are prone to cracks. In foreign countries, natural clay and inorganic water glass are widely used green binders without harmful substances, but water glass has poor collapsibility, and the regeneration of old sand requires a lot of energy, and the overall cost is high. As a promising casting material, phosphate binder has the advantages of no pollution to the environment, high strength, good collapsibility, etc. It has been studied in many countries. In recent years, my country has a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/18
Inventor 熊帆熊鹰罗维松
Owner CHONGQING CHANGJIANG RIVER MOLDING MATERIAL GRP
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