High-temperature-resistant casting coating and preparation method thereof

Abstract

The invention discloses a high-temperature-resistant casting coating and a preparation method thereof. The high-temperature-resistant casting coating is prepared from components in parts by weight asfollows: 15-22 parts of methanol, 1-3 parts of xylene, 20-30 parts of allyl alcohol, 3-8 parts of neoprene latex, 5-10 parts of stearamide, 6-12 parts of methacrylate, 2-5 parts of lauryl sodium sulfate, 32-50 parts of bauxite clinker, 6-10 parts of zircon powder, 6-12 parts of sodium bentonite, 3-6 parts of ceramic fiber, 1-2 parts of aluminum sulfate, 5-8 parts of sepiolite, 3-9 parts of attapulgite, 1-3 parts of polyvinyl butyral, 3-5 parts of dibutyltin dilaurate, 0.6-1.5 parts of fatty alcohol-polyoxyethylene ether, 3-7 parts of silica sol and 2-5 parts of a binder. The high-temperature-resistant casting coating has high wear resistance, high adhesiveness and good breathability in a high-temperature environment, so that a casting has smooth surface and is free of surface folding.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a high temperature resistant casting coating and a preparation method thereof. Background technique [0002] Foundry coatings refer to casting auxiliary materials used to coat the surface of cavity or sand core to change their surface refractoriness, chemical stability, metal erosion resistance, sand sticking resistance and other properties. Thereby, the foundry process production of foundry coating is very important, and the high temperature resistance performance of the foundry coating of prior art is relatively poor, can only be suitable for the production of the small parts that high temperature treatment time is shorter, then can't adapt to the production of large-scale casting; In addition, because Casting coatings have poor chemical stability and insufficient hardness, so they are prone to scour grooves. Contents of the invention [0003] The purpose of the present inv...

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Problems solved by technology

Thereby, the foundry process production of foundry coating is very important, and the high temperature resistance performance of the foundry coating of prior art is relatively poor, can only be suitable for the production of the small parts that high temperature treatment time is shorter, then can't adapt to the production of large-scale casting; In addition, because Poor chemical stability and insufficient hardness of foundry coatings, so they are prone to scour grooves