Method for preparing high-adhesiveness solid-mold casting coating material

A solid casting and adhesion technology, which is applied in casting molding equipment, coatings, casting molds, etc., can solve the problems of inability to apply manual brushing, inability to adapt to production, poor high temperature resistance, etc., and achieve good suspension and touch The effects of denaturation, low production cost, and high anti-sand sticking ability

Inactive Publication Date: 2013-05-15
常州市大华环宇机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The high temperature resistance of the casting coating in the prior art is relatively poor, and it can only be suitable for the production of small parts (within 200kg) with short high temperature treatment time, and cannot adapt to the production of large castings (within 20 tons) and small batches of manual operations
It has high temperature resistance and can be applied to the production process of large castings, but its manufacturing cost is high, and it cannot be applied to manual painting. The paint is black, which is easy to cause black pollution in the working environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A method for preparing a high-adhesive solid mold coating, which consists of the following components in parts by weight (kg): 65 parts of high alumina bauxite clinker, 7 parts of sepiolite powder, 12 parts of corundum powder, and 12 parts of water glass , 4 parts of tree ash, 2 parts of lignosulfonic acid, 0.8 parts of sodium carboxymethyl cellulose, 5 parts of starch paste, 0.4 parts of sodium benzoate, 2 parts of nano ceramic powder, 0.8 parts of iron oxide red powder, 3 parts of olivine powder , 2 parts of hollow glass microspheres, 55 parts of water, the preparation method comprises the following steps:

[0015] 1) Soak sepiolite powder with 10-15% sulfuric acid for 3-4 hours, wash with deionized water, then soak with 10-12% sodium hydroxide solution for 3-4 hours, then wash with deionized water until neutral, then Calcined at 500-530°C for 2-3 hours, crushed into modified sepiolite powder;

[0016] 2) Mix the modified sepiolite powder obtained in the above steps ...

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Abstract

The invention discloses a method for preparing a high-adhesiveness solid-mold casting coating material. According to the method, the high-adhesiveness solid-mold casting coating material is prepared from the following ingredients in parts by weight: 65-75 parts of bauxite chamotte, 5-7 parts of meerschaum powder, 10-12 parts of corundum powder, 10-12 parts of water glass, 4-6 parts of water glass, 1-2 parts of lignosulfonic acid, 0.8-1.5 parts of sodium carboxymethyl cellulose, 5-7 parts of starch paste, 0.4-0.6 part of sodium benzoate, 1-2 parts of nanoscale ceramic powder, 0.5-0.8 part of red ferric oxide powder, 2-3 parts of olivine powder, 2-3 parts of hollow glass beads and 25-35 parts of water. The solid-mold casting coating material prepared by the method has strong wear resistance, high adhesiveness and excellent gas permeability and quick-drying performance in both a high-temperature environment and a low-temperature environment, thereby meeting the production requirements of large-sized cast parts.

Description

technical field [0001] The invention relates to the field of casting, in particular to a preparation method of a high-adhesive full mold casting paint. Background technique [0002] The solid casting coating is a dispersion system composed of a variety of materials with different properties. Its composition mainly includes refractory materials, binders, carriers, water glass and special additives. The coating needs to have good process performance, work performance and quality. Stability and application reproducibility. The solid casting paint is coated on the outer surface of the foam plastic model, and the molding can only be poured after the paint is dry. Foamed plastics are airtight, have a low heat distortion temperature (about 70°C), and have poor affinity for water; foamed plastics are heated and melted, and after gasification, there are many liquid residues and a large amount of gas generation. If these gases and liquid residues cannot be discharged in time , the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 夏坤财
Owner 常州市大华环宇机械制造有限公司
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