Alcohol-based coating for sand casting production of large steel casting and preparation method of alcohol-based coating

A technology of sand casting and steel castings, which is applied in the direction of casting molding equipment, coatings, casting molds, etc., and can solve the problems of suspension, shear thinning, thixotropy, leveling, and easy occurrence of coatings. Bubbles, poor anti-sticking sand performance and other problems, to achieve the effect of improving anti-sticking sand performance, improving leveling, and improving high-temperature bonding strength

Inactive Publication Date: 2021-02-09
卢永光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of alcohol-based paint and preparation method for sand casting production of large-scale steel castings, to solve the problem of high temperature resistance, poor anti-sticking sand performance and low peeling performance of casting paint in the prior art, and the problem of paint application It does not show excellent technical effects in terms of suspension, shear thinning, thixotropy, leveling, etc., and problems such as foaming and delamination are prone to occur during the use of the coating

Method used

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  • Alcohol-based coating for sand casting production of large steel casting and preparation method of alcohol-based coating
  • Alcohol-based coating for sand casting production of large steel casting and preparation method of alcohol-based coating
  • Alcohol-based coating for sand casting production of large steel casting and preparation method of alcohol-based coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] An alcohol-based paint used for sand casting production of large steel castings, the composition is as follows in parts by mass:

[0058]

[0059] The fineness of the refractory powder is 325 mesh, and the refractory powder includes corundum powder and bauxite powder, and the mass ratio of the corundum powder to bauxite powder is 29:71.

[0060] The binder includes phenolic resin powder and rosin powder, and the mass ratio of the phenolic resin powder to the rosin powder is 2.5:1.

[0061] Described curing agent is urotropine.

[0062] The high-efficiency suspending agent component includes polyvinyl butyral ester.

[0063] The auxiliary agent A is iron oxide powder.

[0064] The auxiliary agent B is surfactant Tween 80.

[0065] A preparation method for an alcohol-based coating produced by sand casting of large steel castings, the steps comprising:

[0066] (1) Weigh the raw materials in proportion: put the refractory powder, binder, high-efficiency suspending a...

Embodiment 2

[0073] An alcohol-based paint used for sand casting production of large steel castings, the composition is as follows in parts by mass:

[0074]

[0075] The fineness of the refractory powder is 325 mesh, and the refractory powder includes corundum powder and bauxite powder, and the mass ratio of the corundum powder to bauxite powder is 23:68.

[0076] The binder includes phenolic resin powder and rosin powder, and the mass ratio of the phenolic resin powder to the rosin powder is 3:1.

[0077] Described curing agent is urotropine.

[0078] The high-efficiency suspending agent component includes polyvinyl butyral ester.

[0079] The auxiliary agent A is iron oxide powder.

[0080] The auxiliary agent B is surfactant Tween 80.

[0081] A preparation method for an alcohol-based coating produced by sand casting of large steel castings, the steps comprising:

[0082] (1) Weigh the raw materials in proportion: put the refractory powder, binder, high-efficiency suspending agent...

Embodiment 3

[0089] An alcohol-based paint used for sand casting production of large steel castings, the composition is as follows in parts by mass:

[0090]

[0091] The fineness of the refractory powder is 325 mesh, and the refractory powder includes corundum powder and bauxite powder, and the mass ratio of the corundum powder to bauxite powder is 20:62.

[0092] The binder includes phenolic resin powder and rosin powder, and the mass ratio of the phenolic resin powder to the rosin powder is 3:1.5.

[0093] Described curing agent is urotropine.

[0094] The high-efficiency suspending agent component includes polyvinyl butyral ester.

[0095] The auxiliary agent A is iron oxide powder.

[0096] The auxiliary agent B is surfactant Tween 80.

[0097] A preparation method for an alcohol-based coating produced by sand casting of large steel castings, the steps comprising:

[0098] (1) Weigh the raw materials in proportion: put the refractory powder, binder, high-efficiency suspending a...

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Abstract

The invention discloses an alcohol-based coating for sand casting production of a large steel casting and a preparation method of the alcohol-based coating. A formula comprises the following components of refractory powder, a binder, a high-efficiency suspending agent, a curing agent, an auxiliary agent A, an auxiliary agent B and methanol, and a high-quality casting paint is obtained through mixing, stirring, colloid milling and other treatment. The paint has the advantages of excellent high temperature resistance, excellent sand burning resistance, favorable paint layer stripping performanceand obvious cost benefit. When the coating is applied, the coating has excellent technical effects in the aspects of suspension, shear thinning, thixotropy, leveling property and the like, and the coating is not liable to blister and delaminate in the use process.

Description

technical field [0001] The invention relates to the technical field of casting coatings, in particular to a sand casting coating. Background technique [0002] Sodium silicate sand mold and resin sand mold casting are environmentally friendly. Cast carbon steel and most low alloy steel castings can be obtained by the sand casting method described above. Steel castings made by the above process generally use spraying, brushing, etc. to apply paint to the sand mold to isolate molten steel and sand mold. However, the coatings of the prior art are poor in high temperature resistance, sand sticking resistance, and low peeling performance, and cannot well meet the requirements of the sand casting process; etc. did not show excellent technical effects, and the phenomenon of foaming and delamination is prone to occur during the use of the coating, which leads to poor anti-sticking sand effect of large castings and affects the quality of castings. Therefore, how to provide an alco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00B22C1/22B22C1/10B22C1/02
CPCB22C3/00B22C1/2253B22C1/2293B22C1/10B22C1/02
Inventor 卢永光
Owner 卢永光
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