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Composition for casting material and preparation method thereof

A composition and composite powder technology, which is applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of high gas generation, easy peeling of casting coating and casting body, etc., achieve small gas generation, improve peelability, Good dispersion effect

Active Publication Date: 2021-09-03
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a composition for casting materials and its preparation method, which solves the problems that the existing casting coatings have high gas generation and the casting coatings and casting bodies are easy to peel off.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Modified bentonite composite powder 22%, modified Al 2 o 3 Composite powder 10%, LiAl(SiO 3 ) 2 / Li 2 O·Al 2 o 3 4SiO2 2 19% magnesium oxide powder, 1.2% magnesium oxide powder, 4% water-soluble alkyd resin, 0.6% iron-carbon-chromium ferroalloy powder (FeCr67C6.0), 18% water and the rest of Al 2 o 3 2SiO2 2 2H 2 O powder is carried out batching and mixing to obtain the composition for casting material; Wherein, the preparation method of modified bentonite composite powder comprises: press Al(ClO 3 ) 3 , The proportion of bentonite is 5.6:100, the bentonite is ground to 100 mesh, and Al(ClO 3 ) 3 Mix, then add water according to the solid-liquid weight ratio of 4:7, stir evenly, then add Al(ClO 3 ) 3 , 1.3% sodium carbonate of bentonite mixture weight, then stirring time 28min, after 90 ℃ insulation 14h, filter, dry (90 ℃, 1.8h), obtain Al(ClO 3 ) 3 Modified bentonite composites. The composite was ground to 300 mesh. Modified Al 2 o 3 The preparation ...

Embodiment 2

[0023] According to the method of Example 1, the difference is that 25% of modified bentonite composite powder, modified Al 2 o 3 Composite powder 13%, LiAl(SiO 3 ) 2 / Li 2 O·Al 2 o 3 4SiO2 2 21% magnesium oxide powder, 1.5% magnesium oxide powder, 6% water-soluble alkyd resin, 0.9% iron-carbon-chromium ferroalloy powder (FeCr67C6.0), 20% water and the rest of Al 2 o 3 2SiO2 2 2H 2 The O powder is batched and mixed to obtain a composition for casting materials.

Embodiment 3

[0025] According to the method of Example 1, the difference is that 27% of modified bentonite composite powder, modified Al 2 o 3 Composite powder 15%, LiAl(SiO 3 ) 2 / Li 2 O·Al 2 o 3 4SiO2 2 23% magnesium oxide powder, 1.8% magnesium oxide powder, 8% water-soluble alkyd resin, 1.1% iron-carbon-chromium ferroalloy powder (FeCr67C6.0), 21% water and the rest of Al 2 o 3 2SiO2 2 2H 2 The O powder is batched and mixed to obtain a composition for casting materials.

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Abstract

The invention discloses a composition for a casting material and a preparation method thereof. The composition for the casting material comprises modified bentonite composite powder, modified Al2O3 composite powder, LiAl(SiO3)2 / Li2O. Al2O3.4SiO2 powder, magnesium oxide powder, water-soluble alkyd resin, iron-carbon-chromium-iron alloy powder, Al2O3.2SiO2.2H2O powder and water. The problems that the gas evolution amount of an existing casting coating is high, and the casting coating and a casting body are prone to being stripped are solved.

Description

technical field [0001] The invention relates to the field of inorganic materials, in particular to a composition for casting materials and a preparation method thereof. Background technique [0002] The application of stainless steel castings is more and more extensive. The quality of stainless steel castings is closely related to the coating in the casting process. The casting coating determines the quality of the stainless steel surface. There are many shortcomings in the existing casting coatings: 1. It is easy to form low melting point compounds. Sticky sand; 2. The adhesion of the coating is poor; 3. The coating is easy to foam and crack after burning and drying; 3. The leveling property is not good, the coating uniformity is poor, and delamination occurs in a short time, and the refractory aggregate is easy to harden. For example, the Chinese patent with the patent number CN201611176016.3 provides a casting coating for extra-large stainless steel castings and its prep...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 张椿英高乐乐
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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