Formula of clay sand
A clay-sand and formula technology, applied in casting molding equipment, molds, cores, etc., can solve problems such as pores on the surface of castings, unclear edges and corners of castings, loss of production enterprises, and scrapping.
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[0007] The present invention is further described in detail in conjunction with the examples, and according to the above-mentioned analysis, check the actual effect situation: determine two groups of formulas and carry out experiments with the data range of the new formula.
[0008] The first group: yellow sand 18%, green sand 10%, high temperature cement 4.0%, quartz sand 4.5%, recycled sand (secondary sand) 55%, coal powder 4%, bentonite 4%, alkali powder 0.5%.
[0009] The second group: yellow sand 20%, green sand 10%, high temperature cement 5%, recycled sand 50%, coal powder 4%, bentonite 3.5%, alkali powder 0.5%.
[0010] Moisture content description: The water content of the two groups of formulas is measured based on 100% of the components and values of each group, and 6 measurement units of water are added.
[0011] After stirring the two groups of formula materials evenly according to the usual process, use the determined two casting products with high requirements...
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