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A kind of liquid curing agent for phosphate binder and its application

A binder and phosphate technology, applied in the field of molding materials, can solve the problems of low strength, poor stability, and difficulty in automatic feeding control.

Active Publication Date: 2020-04-24
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to develop a kind of liquid solidifying agent that is used for phosphate binder, to replace existing powdery solidifying agent at present, solve powdery solidifying agent in the preparation sand mold (core) process automatic feeding control difficulty is big, Easy to raise dust, sand mold (core) demoulding time is long, low strength, poor stability and other technical problems

Method used

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  • A kind of liquid curing agent for phosphate binder and its application
  • A kind of liquid curing agent for phosphate binder and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0022] 1) Weigh 100g of tap water and 40g of citric acid for later use;

[0023] 2) Add 40g of citric acid and 100g of water in 1) into the reactor, start the agitator, and discharge after stirring evenly to obtain a colorless and transparent citric acid aqueous solution;

[0024] 3) Take 6g of silane coupling agent for subsequent use;

[0025] 4) Take by weighing 1000g of former sand, 25g of phosphate binder, 7g of citric acid aqueous solution for subsequent use;

[0026] 5) Mix the weighed citric acid aqueous solution and the phosphate binder evenly for subsequent use;

[0027] 6) Stir and mix the silane coupling agent and the raw sand in the sand mixer until uniform, then continue to add the mixed solution of the phosphate binder and citric acid aqueous solution obtained in step 5) and mix the sand until uniform and then produce sand (adding without stopping during the process).

[0028] 7) Fill sand into the "8" sample mold, blow in compressed air for 3 minutes, take th...

Embodiment 2

[0030] 1) Weigh 100g of tap water and 62.5g of citric acid for later use;

[0031] 2) 62.5g of citric acid and 100g of water in 1) are added in the reaction kettle, start the agitator, and discharge after stirring evenly to obtain a colorless and transparent citric acid aqueous solution;

[0032] 3) Take 8g of silane coupling agent for subsequent use;

[0033] 4) Take by weighing 1000g of former sand, 25g of phosphate binder, 6.5g of citric acid aqueous solution for subsequent use;

[0034] 5) Mix the weighed citric acid aqueous solution and the phosphate binder evenly for subsequent use;

[0035] 6) Stir and mix the silane coupling agent and the raw sand in the sand mixer until uniform, then continue to add the mixed solution of the phosphate binder and citric acid aqueous solution obtained in step 5) and mix the sand until uniform and then produce sand (adding non-stop during the process);

[0036] 7) Fill sand into the "8" sample mold, blow in compressed air for 2 minute...

Embodiment 3

[0038] 1) Weigh 100g of tap water and 21.43g of citric acid for later use;

[0039] 2) Add 21.43g of citric acid and 100g of water in 1) into the reaction kettle, start the stirrer, and discharge after stirring;

[0040] 3) Take 7g of silane coupling agent for subsequent use;

[0041] 4) Take by weighing 1000g of former sand, 25g of phosphate binder, 8.5g of citric acid aqueous solution for subsequent use;

[0042] 5) Mix the weighed citric acid aqueous solution and the binder evenly for subsequent use;

[0043] 6) Stir and mix the silane coupling agent and the raw sand in the sand mixer until uniform, then continue to add the mixed solution of phosphate binder and citric acid aqueous solution to mix the sand until uniform, and then produce sand (do not stop during the feeding process) );

[0044] 7) Fill sand into the "8" sample mold, blow in compressed air for 7 minutes, and take the mold.

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Abstract

The invention discloses a liquid curing agent for a phosphate bonding agent and application thereof. The curing agent comprises two components, wherein 45.16%-55.17% of silane coupling agent serves asthe component I; 44.83%-54.84% of the component II comprising water and citric acid, and the component II, the citric acid accounts for 9.68%-17.24%, and the water accounts for 27.59%-45.16%. The liquid curing agent disclosed by the invention is wide in ram material source, low in cost and simple in preparation and application process. The liquid curing agent is long in using time when used for self-hardening sand production and short in demolding time and is used for bowing hardening of cold core boxes. The adopted compressed air is low in cost, environment-friendly and free of pollution.

Description

technical field [0001] The invention relates to the field of modeling (core) materials in the foundry industry, in particular to a liquid curing agent for phosphate binders and a preparation method and use method thereof. Background technique [0002] The foundry industry is an industry with high energy consumption and high pollution. The energy consumption of the foundry industry accounts for about 1 / 3 of the total energy consumption of the machinery industry. At present, although the output of my country's foundry industry ranks first in the world, the pollution control technology and facilities are relatively backward, and the discharge of three wastes is ten times that of some industrialized countries. A large part of the waste gas pollution comes from the heat of organic resin binders. It is understood that under the new policy and new environment, traditional foundry enterprises are facing the pain of transformation and upgrading, and many enterprises are actively seek...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C1/18
CPCB22C1/185
Inventor 夏露任彦臻张友寿
Owner HUBEI UNIV OF TECH
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