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A kind of pyroclastic rock alcohol-based casting coating and its preparation method

A pyroclastic rock and foundry coating technology, which is applied in foundry molding equipment, coatings, molds, etc., can solve the problems of inability to meet large-scale industrial production, single function of alcohol-based foundry coatings, and low resistance to metal scouring. , to achieve the effect of reducing the amount of defects, easy to promote, and low cost

Active Publication Date: 2016-08-24
湖州信倍连网络科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] However, alcohol-based casting coatings in the prior art have many defects, such as poor suspension stability, easy delamination during long-distance transportation and storage, poor high temperature resistance, low hardness, poor chemical stability, and low metal erosion resistance. , weak sand resistance, etc., make alcohol-based casting coatings have a single function and cannot meet large-scale industrial production

Method used

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Embodiment Construction

[0014] The pyroclastic rock alcohol-based casting coating is characterized in that it is made of the following raw materials in parts by weight: fluorite powder 44, floating beads 7, white corundum 56, organic bentonite 1, pyroclastic rock 18, silicon Sol 1.2, light calcium carbonate powder 2, heavy calcium carbonate powder 0.5, tributyl phosphate 2.2, rapeseed residue 14, phenolic resin 2, hexamethylenetetramine 5, ethanol 45, additive 3.

[0015] The auxiliary agent is made of the following raw materials in parts by weight: shell 23, sepiolite 39, zircon 57, silane coupling agent KH-570 3.4, dimethyl silicone oil 0.4, ferrocene 3.2, iron oxide powder 2 , coal tar 3, calcium lignosulfonate 0.3, nano-silicon carbide powder 0.3, calcium carbonate 2.3, polyvinyl alcohol 5, appropriate amount of water, the preparation method is to put shells, sepiolite and zircon into a calciner Calcined at 550-680°C for 2-3 hours, taken out, soaked in 8-12% hydrochloric acid solution for 4-5 hou...

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Abstract

The invention discloses a pyroclastic rock alcohol-based casting coating, which is characterized in that it is made of the following raw materials in parts by weight: fluorite powder 40-50, floating beads 5-8, white corundum 50-60, organic bentonite 1-8 2. Pyroclastic rock 18‑28, silica sol 1.2‑3.1, light calcium carbonate powder 2‑4, heavy calcium carbonate powder 0.5‑0.8, tributyl phosphate 1.2‑3.2, rapeseed residue 14‑17, phenolic resin 2‑4, hexamethylenetetramine 3‑5, ethanol 45‑60, additives 3‑6; the coating prepared by the present invention is low in cost and simple in process, can be stirred manually or mechanically, and is suitable for small-scale or Large-scale production is easy to promote, and the prepared coating has the advantages of high strength, high temperature resistance and good air permeability.

Description

technical field [0001] The invention relates to the field of casting coatings, in particular to a pyroclastic alcohol-based casting coating and a preparation method thereof. Background technique [0002] Foundry coatings refer to casting auxiliary materials that are used to coat the surface of the cavity or sand core to change their surface refractoriness, chemical stability, metal erosion resistance, sand sticking resistance, etc. It is composed of various properties. It is a dispersion system composed of high-quality materials, and its composition mainly includes refractory materials, suspending agents, carriers, binders and special additives. When acting on castings, it is required that the coating has good process performance, work performance, quality stability and application reproducibility. Prevent defects such as cracking, trachoma, and white iron formation caused by excessive local cooling of casting products. There are many kinds of casting coatings, which can b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
Inventor 黄浩
Owner 湖州信倍连网络科技有限公司
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