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Benshan green clay type molding sand used for pressure plate casting and a preparing method thereof

A Benshan green clay and pressure plate technology, which is applied to casting molding equipment, casting molds, cores, etc., can solve the problems affecting the quality of castings and poor comprehensive performance, so as to ensure comprehensive performance and quality stability, excellent performance, and improved The effect of surface quality

Inactive Publication Date: 2016-09-28
繁昌县琪鑫铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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 molding sand used for platen casting in the market has the disadvantage of poor comprehensive performance, which affects the quality of castings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A Benshan green clay molding sand for plate casting, made of the following raw materials in weight (kg): Benshan green clay 24, zircon powder 15, olivine sand 28, anorthite 16, granite waste 12, gum tragacanth Powder 8, refining slag 7, pearl stone 9, polyvinyl alcohol 6, magnesium chloride 4, sodium dichromate 3, improver 110;

[0015] The preparation method of the modifier is as follows: a. Take the following raw materials by weight (kg): polyacrylamide 22, polyethylene glycol 17, calcium lignosulfonate 15, acetylated distarch adipate 7, konjac Powder 25, yellow dextrin 20, methyl acrylate 50, butyl methacrylate 34, liquid rosin resin 12, sodium dodecylbenzene sulfonate 2.5, Tween 60 1.5, ammonium persulfate 0.3, sodium bisulfite 0.15 ; 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 75°C, stir for 40 minutes, cool down to 50°C, and add liquid rosin resin ...

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Abstract

Benshan green clay type molding sand used for pressure plate casting and a preparing method thereof are disclosed. The molding sand is prepared from 21-29 parts by weight of Benshan green clay, 11-17 parts by weight of zircon powder, 24-32 parts by weight of olivine sand, 12-18 parts by weight of anorthite, 10-15 parts by weight of granite waste, 6-12 parts by weight of gum tragacanth powder, 5-10 parts by weight of refining slag, 7-13 parts by weight of perlite, 4-8 parts by weight of poly(vinyl alcohol), 3-5 parts by weight of magnesium chloride, 2-4 parts by weight of sodium dichromate and 100-120 parts by weight of a modifier. The Benshan green clay and the gum tragacanth powder, the poly(vinyl alcohol), the magnesium chloride, and the like are matched with each other and adopted as an adhesive, and therefore the prepared molding sand is excellent in adhesiveness and is excellent in plasticity, fire resistance and gas permeability. The molding sand is simple and easily available in components, simple in preparing method and low in cost, is an environmental friendly product with excellent properties, and can be widely used in the field of pressure plate casting.

Description

technical field [0001] The invention relates to Benshan green mud molding sand used for platen casting 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 of molding sand are getting higher and higher. Currently, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/00B22C1/02B22C1/16
CPCB22C1/00B22C1/02B22C1/167
Inventor 赵光明
Owner 繁昌县琪鑫铸造有限公司
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