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Clay green sand applied to carbon steel castings and preparation method of clay green sand

A technology of green sand and castings, applied in the direction of casting molding equipment, molds, cores, etc., can solve the problems of affecting the quality of castings, poor comprehensive performance, etc., and achieve comprehensive performance and quality stability, good plasticity, and reasonable formula Effect

Inactive Publication Date: 2016-05-04
WUHU JINMAO FLUID TECH CO LTD
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous development of casting technology, the performance requirements for molding sand are getting higher and higher. At present, the mo

Method used

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Embodiment Construction

[0014] A kind of clay green sand for carbon steel castings, made of the following raw materials in weight (kg): illite 17, papermaking sludge 23, alum ore tailings 16, magnesia 25, waporite 7, siltstone 12, clay 13. Lapis Lazuli 18, Urea 4.5, Potassium Dihydrogen Phosphate 7, Sodium Alginate 5, Improver 130;

[0015] The preparation method of the modifier is as follows: a. Take the following raw materials by weight (kg): polyacrylamide 24, polyethylene glycol 20, calcium lignosulfonate 17, acetylated distarch adipate 9, konjac Powder 27, yellow dextrin 23, methyl acrylate 52, butyl methacrylate 38, liquid rosin resin 14, sodium dodecylbenzenesulfonate 3, Tween 601.5, ammonium persulfate 0.3, sodium bisulfite 0.2; b. Mix konjac powder, yellow dextrin, and acetylated distarch adipate evenly, add water equivalent to 4 times the amount of the mixture, heat in a water bath to 80°C, stir for 35min, cool down to 45°C, add liquid rosin resin, Sodium dodecylbenzenesulfonate and Tween ...

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Abstract

The invention discloses clay green sand applied to carbon steel castings and a preparation method of the clay green sand. The clay green sand is prepared from the following raw materials in parts by weight: 13-21 parts of illite, 18-26 parts of paper sludge, 14-19 parts of vanadium mineral tailings, 22-28 parts of magnesia, 5-10 parts of datolite, 8-16 parts of siltstone, 10-15 parts of clay, 15-20 parts of lapis lazuli, 3-6 parts of urea, 6-9 parts of monopotassium phosphate, 4-7 parts of sodium alginate, and 120-140 parts of an improver. Through the raw material including vanadium mineral tailings, datolite, siltstone, lapis lazuli and the like, the heat resistance, breathability and strength of the sand are improved, and through the raw material including paper sludge, clay, urea, monopotassium phosphate, sodium alginate and the like, the mobility, dispersibility and plasticity of the sand are improved. The sand has excellent comprehensive performance, has the characteristics of good breathability, mobility, dispersibility, heat resistance and plasticity, high strength and the like, and is applicable to carbon steel castings.

Description

technical field [0001] The invention relates to clay green molding sand for carbon steel castings and a preparation method thereof, belonging to the technical field of molding sand. Background technique [0002] Molding sand is the most important molding material in the sand casting process. It is generally made by mixing molding materials such as foundry sand, molding sand binder and auxiliary additives in a certain proportion. Natural silica sand containing clay can also be used. The role of molding sand in foundry production is extremely important. The quality of molding sand directly affects the appearance quality of castings and the casting defects such as sand holes, pores, and sand inclusions in castings. The casting waste caused by poor quality of molding sand accounts for about 10% of the total casting waste. 30-50% of. With the continuous development of casting technology, the performance requirements for molding sand are getting higher and higher. At present, the...

Claims

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Application Information

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IPC IPC(8): B22C1/02B22C1/00
CPCB22C1/02B22C1/00
Inventor 孙述全孙雄高峰
Owner WUHU JINMAO FLUID TECH CO LTD
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