Moisture absorption resistance iron cast precoated sand

Abstract

The invention discloses moisture absorption resistance iron cast precoated sand, which comprises base sand, a binder, hexamethylenetetramine, calcium stearate, organosilane KH-550, and an additive A, wherein the base sand comprises, by weight, 60 parts of iron ore sand, 48 parts of corundum sand, 4 parts of calcium peroxide, 3 parts of asphalt, and loess coated particles, and 23 parts by weight of loess, 3 parts by weight of sodium dihydrogen phosphate and a proper amount of water are subjected to wet mixing to form aggregate, and then are subjected to calcination and crushing to obtain the loess coated particles. The moisture absorption resistance iron cast precoated sand has the following characteristics that: moisture absorption resistance is good, roughness is low, high temperature resistance is provided, and sand sticking on a cast is not easily generated.

Description

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AI Technical Summary

Benefits of technology

This patented technology provides improved properties for making coatings that have good thermal insulation or durable bond between different layers like metal plates without causing damage during use. These improvements include reducing surface roughness caused when there's nozzles used to deliver liquid material onto the surfaces being treated (such as molten steel), increasing flexibility at low temperatures while maintaining strong binding force against other elements such as aluminum alloys, enhancing coolant flow through the space around them, prevention from rustiness due to moisture ingress, reduction of impurities within the melting process, reduced volatility of certain chemical compounds involved in manufacturing processes, increased efficiency in producing refractory metals, etc., resulting in more cost savings over existing methods.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving thermal insulation properties for casting products made from such materials due to their ability to absorb water vapor generated when molten metal comes into contact with them without causing damage.