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Casting sand mixing auxiliary material

A sand auxiliary material and raw material technology, which is applied in the direction of casting molding equipment, casting molds, manufacturing tools, etc., can solve the problems of unfavorable transportation and storage of liquid, unfavorable health and work, and pungent smell, so as to improve the smoothness and improve defects , Improve the effect of hot and wet tensile strength

Inactive Publication Date: 2011-09-21
XINCAI DONGBANG FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the foundry industry, foundry sand matching plays a very important role in the casting quality of castings. However, traditional foundry sand matching auxiliary materials can no longer meet the needs of casting quality, such as synthetic fat oil and tung oil. During the casting process, air and gas are easily generated. Insurmountable defects such as subcutaneous air and air, in addition, both are liquids that are not conducive to transportation and storage, and have a pungent smell, making people easy to breathe, which is not conducive to health and work; for this reason, people have been seeking an ideal technical solutions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A foundry sand preparation auxiliary material, which includes: adding the following raw materials into a reactor for stirring and mixing, and heating to 95°C-105°C for 1.5 hours, then pouring out the mixed material in the reactor and processing it into powder , that is, casting sand matching auxiliary materials;

[0010] In parts by weight, the raw materials include: 200 parts of modified starch, 1 part of stove sugar, 1 part of glycerin, 4 parts of sodium hydroxide, 8 parts of wood powder, 10 parts of casting coal powder, 4 parts of iron oxide, carboxymethyl 2 parts of starch and 10 parts of water; among them, one or more selected plant flours are added into the starch reaction kettle, and heated to 135 ° C ~ 145 ° C for 1.5 hours, and then, the starch reaction kettle After the material is poured out and dried, it is subjected to aqueous acidification treatment, dried and pulverized into powder to obtain the modified starch.

[0011] When in use, the washed sand, wate...

Embodiment 2

[0013] A foundry sand preparation auxiliary material, which includes: adding the following raw materials into a reactor for stirring and mixing, and heating to 90°C to 110°C for 2 hours, then pouring out the mixed material in the reactor and processing it into a powder , that is, casting sand matching auxiliary materials;

[0014] In parts by weight, the raw materials include: 210 parts of modified starch, 1.2 parts of stove sugar, 1.2 parts of glycerin, 5 parts of sodium hydroxide, 10 parts of wood powder, 12 parts of casting coal powder, 5 parts of iron oxide, carboxymethyl 3 parts of starch and 12 parts of water; among them, one or more selected plant flours are added into the starch reactor, and heated to 140 ° C ~ 150 ° C for 2 hours, and then, the starch reactor After the material is poured out and dried, it is subjected to aqueous acidification treatment, dried and pulverized into powder to obtain the modified starch.

Embodiment 3

[0016] A foundry sand preparation auxiliary material, which includes: adding the following raw materials into a reactor for stirring and mixing, and heating to 100°C to 110°C for 1 hour, then pouring out the mixed materials in the reactor and processing them into powder , that is, casting sand matching auxiliary materials;

[0017] In parts by weight, the raw materials include: 180 parts of modified starch, 0.8 parts of stove sugar, 1 part of glycerin, 3.5 parts of sodium hydroxide, 7 parts of wood powder, 11 parts of casting coal powder, 4 parts of iron oxide, carboxymethyl 3 parts of starch and 9 parts of water; among them, one or more selected plant flours are added into the starch reactor, and heated to 130°C-140°C for 2.5 hours, and then, the starch reactor After the material is poured out and dried, it is subjected to aqueous acidification treatment, dried and pulverized into powder to obtain the modified starch.

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Abstract

The invention provides a casting sand mixing auxiliary material. The casting sand mixing auxiliary material is prepared by the following steps of: adding the following raw materials into a reaction kettle to stir and mix and heating the mixed materials to 100 DEG C for 1.5 hours; and then pouring the mixed materials in the reaction kettle out and processing the mixed materials into powder, namelythe casting sand mixing auxiliary material. The raw materials comprises the following components in part by weight: 200 parts of modified starch, 1 part of malt sugar, 1 part of glycerol, 4 parts of sodium hydroxide, 8 parts of woodmeal, 10 parts of cast pulverized coal, 4 parts of ferric oxide, 2 parts of carboxymethyl starch and 10 parts of water. The modified starch is prepared by the following steps of: adding one or more vegetable flour into a starch reaction kettle and heating the vegetable flour to 140 DEG C for 1.5 hours; pouring the materials in the starch reaction kettle out and drying the materials through spinning; performing water-based acidizing treatment on the materials; drying and pulverizing the materials into powder to obtain the modified starch. The casting sand mixingauxiliary material has the advantages of good casting effect, no toxicity, no harm and no pollution.

Description

technical field [0001] The invention relates to a foundry sand mixing auxiliary material, which belongs to the field of foundry materials. Background technique [0002] In the foundry industry, foundry sand matching plays a very important role in the casting quality of castings. However, traditional foundry sand matching auxiliary materials can no longer meet the needs of casting quality, such as synthetic fat oil and tung oil. During the casting process, air and gas are easily generated. Insurmountable defects such as subcutaneous air and air, in addition, both are liquids that are not conducive to transportation and storage, and have a pungent smell, making people easy to breathe, which is not conducive to health and work; for this reason, people have been seeking an ideal technical solutions. Contents of the invention [0003] The invention aims at the deficiencies of the prior art, and provides a casting sand mixing auxiliary material with good casting effect, no pois...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/02
Inventor 林春俊
Owner XINCAI DONGBANG FOUNDRY
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