Sintered strippable light-colored casting coating and preparation method thereof

A casting coating and peeling technology, which is used in casting molding equipment, coatings, molds, etc., can solve the problems that limit the wide application of low-cost light-colored sintering and peeling coatings, the narrow range of sintering and peeling, and the changing temperature range of coating sintering. Small and other problems, to achieve excellent sintering peeling, good sintering peeling performance, avoid the effect of missing coating

Active Publication Date: 2014-06-25
广东省铸力铸材科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a kind of wide applica

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In this embodiment, calculated by mass parts, the components of the coating are: 70 parts of zirconium-containing composite silicate powder, 20 parts of bauxite powder, 6 parts of talcum powder, 4 parts of ferric oxide powder, 3 parts of lithium-based rectorite powder, 3 parts of tap water, 2 parts of phenolic resin, 0.5 parts of rosin, 1 part of polyvinyl butyral, 0.1 part of calcium stearate, 10 parts of methanol, and 45 parts of ethanol.

[0032] The preparation steps of this coating are:

[0033] (1) Add tap water and suspending agent to the batching tank A, stir and soak fully, activate for more than 24 hours, then add an appropriate amount of organic solvent and circulate the colloid mill in the colloid mill for 2 to 3 minutes; or put a certain amount of tap water and suspending agent in the wheel Stir and roll in the mill for activation for more than 2 hours, then let it stand for more than 24 hours, then add an appropriate amount of organic solvent to circulate ...

Embodiment 2

[0039] In this embodiment, calculated in parts by mass, the components of the coating are: 80 parts of zirconium-containing composite silicate mineral powder, 20 parts of zircon powder, 4 parts of lithium-based bentonite powder, 3 parts of tap water, 1 part of phenolic resin 1 part of rosin, 0.5 part of polyvinyl butyral, 0.3 part of calcium stearate, and 55 parts of ethanol.

[0040] The preparation steps of the coating are the same as in Example 1.

[0041] In this embodiment, the coating is light white and has good sintering peeling performance. When producing large and medium-sized steel castings, the area ratio of the coating peeling off automatically in pieces after cooling out of the box is greater than 90%.

Embodiment 3

[0043] In this example, calculated in parts by mass, the components of the paint are: 85 parts of zirconium-containing composite silicate mineral powder, 15 parts of bauxite powder, 5 parts of lithium-based attapulgite powder, 4 parts of tap water, phenolic 3 parts of resin, 0.2 part of rosin, 0.2 part of polyvinyl butyral, 0.3 part of calcium stearate, 65 parts of methanol.

[0044] The preparation steps of the coating are the same as in Example 1.

[0045] In this embodiment, the coating is light white, and the sintering peeling performance is good. When the small and medium-sized steel castings are produced, the area ratio of the coating peeling off automatically after cooling out of the box is greater than 85%.

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Abstract

The invention discloses and provides a sintered strippable light-colored casting coating which is wide in application range, pollution-free, low in cost and good in sintering stripping performance and stability, and a preparation method thereof. The coating provided by the invention completely does not contain graphite powder; composite zirconium-containing silicate mineral powder is adopted as a main fireproof base material and a suspending agent, a bonding agent, a de-foaming agent and the like are added at the same time; the raw materials are low in price and sufficient in source; the coating is excellent in sintering stripping performance, sand bonding resistance and suspension stability, unlikely to generate deposits in long-term storage and transportation processes, low in production cost and free of environmental pollution, and can be used for producing various cast steel parts and various cast iron and non-ferrous cast parts; especially the sintering stripping performance of the coating is wide in adaptability and breaks through the limitation of narrow adaptation range of the sintering stripping performance ubiquitous in a conventional sintered strippable coating. The coating is applied in the technical field of casting coatings.

Description

technical field [0001] The invention relates to a casting coating, in particular to a sintering-peeling light-colored alcohol-based casting coating and a preparation method thereof. Background technique [0002] Casting coatings are commonly used modeling materials to prevent defects such as sand sticking and sand inclusions on the surface of castings, reduce the surface roughness of castings, and reduce the workload of cleaning the surface of castings. It has various technical effects and good comprehensive economic benefits. [0003] At present, ordinary cast iron coatings in China generally use microcrystalline graphite powder and flake graphite powder as basic refractory materials. Graphite powder has high refractoriness and low price, which can effectively prevent sand sticking defects caused by metal penetration. However, the graphite powder coating is black, which seriously pollutes the working environment and deteriorates working conditions during preparation and u...

Claims

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Application Information

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IPC IPC(8): B22C3/00
Inventor 冯胜山谢树忠刘春晶张传波梁家豪高运华李方义徐幼喜
Owner 广东省铸力铸材科技有限公司
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