Molding sand and preparation method
A technology of molding sand and zircon sand, which is applied to casting molding equipment, casting molds, cores, etc., can solve the problems of not meeting the strict requirements of nearly perfect appearance, reducing the work efficiency of making artistic castings, wasting manpower and material resources, etc., and achieving High production efficiency, short production cycle, and the effect of improving product quality
Active Publication Date: 2006-12-06
武汉重工铸锻有限责任公司
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AI Technical Summary
Problems solved by technology
[0002] Due to the particularity of the shape of artistic casting products, ordinary water glass sand is often used in traditional crafts to make casting sand. Although ordinary water glass sand has the advantages of simple preparation, low cost, convenient operation, and easy molding, it also has shortcomings: First, the strength Castings that are not enough to make super-large artistic castings; secondly, the most important item for artistic castings—the surface quality, cannot meet the demanding requirements of its almost perfect appearance
Moreover, castings made of this sand require a lot of rest work in the later stage, which greatly reduces the work efficiency of making artistic castings, and at the same time prolongs the production cycle to a large extent, wasting a lot of manpower and material resources.
Method used
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Experimental program
Comparison scheme
Effect test
example 1
[0012] Example 1. Zircon sand, zircon sand weight 0.3% zircon powder, 0.6% graphite powder were mixed with a sand mixer for 5 seconds, and then wet mixed with 7% water glass for 15 seconds to obtain molding sand.
example 2
[0013] Example 2. Zircon sand, zircon sand weight 0.4% zircon powder, 0.7% graphite powder were mixed with a sand mixer for 6 seconds, and then wet mixed with 7% water glass for 16 seconds to obtain molding sand.
example 3
[0014] Example 3. Zircon sand, zircon sand weight 0.6% zircon powder, 1.0% graphite powder were mixed with a sand mixer for 8 seconds, and then wet mixed with 7% water glass for 18 seconds to obtain molding sand.
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A moulding sand is prepared from zircon sand (or powder), graphite powder and water glass through proportionally and sequentially mixing. Its advantages are high surface quality of casting mould and high refractory performance.
Description
technical field [0001] The invention relates to a special casting surface sand in the foundry industry and a preparation method thereof, in particular to a modeling material and a preparation method of artistic castings with high requirements on surface quality and complicated surface decorations. Background technique [0002] Due to the particularity of the shape of artistic casting products, ordinary water glass sand is often used in traditional crafts to make casting sand. Although ordinary water glass sand has the advantages of simple preparation, low cost, convenient operation, and easy molding, it also has shortcomings: First, the strength Castings that are not enough to make super-large artistic castings; secondly, the most important aspect of artistic castings—the surface quality, cannot meet the demanding requirements of its almost perfect appearance. Moreover, the castings made of this sand require a lot of rest work in the later stage, ...
Claims
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Inventor 杜忠维蔡双林丁大庆刘秀芬程国清张昕
Owner 武汉重工铸锻有限责任公司