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Definition of refractory paint:
Generally refers to mold coatings, coatings developed specifically for the casting industry. The use of casting paint in the casting industry has had a certain impact, but there are still many casting and forging manufacturers have not yet realized that it has an important impact on the quality of products such as casting parts, especially the surface air tightness, stiffness and roughness of castings.
The practical function of refractory coatings in casting production
Our team of R & D and production of casting coatings has been deeply engaged in the domestic casting industry for many years, and earlier engaged in R & D and production of casting coatings, the main core materials are zirconium powder, corundum powder, magnesium olivine powder, magnesia powder, bauxite powder, graphite powder, talc powder, etc.
In practical applications, casting parts can have the following effects:
1, refractory coating as a layer between the mold and the casting, has a significant anti-sand effect.
Casting sand is divided into mechanical sand and chemical sand.
Mechanical sand adhesion is mainly caused by the gap caused by the chemical reaction between the surface high temperature and the contact surface of the cast in the process of casting at high temperature to condensation, resulting in the penetration or adhesion of sand chips.
2, reduce the surface roughness of casting parts, improve smoothness.
3, strengthen the sand surface.
4, maintain the metal shape and control the casting solidification process.
5, add the corresponding elements, through the penetration method to adjust the casting surface alloy properties.
Performance indicators of refractory coatings:
1. Density 1.6-1.9. Some zirconium powder main material coating can reach 3-4.
2. Suspension.
3. PH value.
4. Permeability.
5, leveling and flowability.
6, casting coating thickness and adhesion.
7, drying cracking resistance, scouring resistance to melting water.
The above Hubei Anaijie provides!
