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New type solidifying agent for furan self bardening resin

A furan self-hardening and curing agent technology, which is used in casting molds, cores, casting and molding equipment, etc., can solve the problems of increased sulfur content, increased brittleness, and increased costs in recycled sand, and achieves a simple preparation method and maintains The effect of curing speed and wide range of acid value

Inactive Publication Date: 2005-05-25
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In different seasons, the resin must be matched with different types of curing agents to achieve the required curing speed. Several curing agents cannot replace each other. Therefore, foundry manufacturers often have inventory of curing agents due to seasonal changes, thereby increasing the number of unsatisfactory curing agents. Necessary cost, in the same season, due to the difference in air temperature and the fluctuation of sand temperature, it also leads to a wide range of addition of a single curing agent, the general addition is 30%-70% of the resin, which not only increases The consumption and cost of the workshop site will lead to an increase in the sulfur content of the recycled sand and an increase in the brittleness of the mold (core) sand mold, making it difficult to achieve an ideal casting process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0011] Curing agent formulation and synthesis process for fast furan no-bake resin

[0012] Toluene: 2g Xylene: 6g Sulfuric acid: 50g Water: 8.9g Methanol: 3g Ethanol: 3g Adjuster: 0.1g.

[0013] Mix toluene and xylene, add sulfuric acid, react at a temperature of 110-135°C for 6 hours, cool to below 60°C, add a mixture of methanol and ethanol, react at a temperature of 60-65°C for 2 hours, then cool to below 40°C, add Water and regulator are mixed evenly and discharged.

[0014] Curing agent formulation and synthesis process for slow furan no-bake resin

[0015] Toluene: 10g Xylene: 12g Sulfuric acid: 10g Water: 49.5g Methanol: 14g Ethanol: 4g Conditioner: 0.5g

[0016] Mix toluene and xylene, add sulfuric acid, react at a temperature of 110-115°C for 6 hours, cool to below 50°C, add a mixture of methanol and ethanol, react at a temperature of 40-50°C for 2 hours, then cool to below 40°C, add Water and regulator are mixed evenly and discharged.

[0017] Curing agent for f...

example 2

[0021] Curing agent formulation and synthesis process for fast furan no-bake resin

[0022] Xylene: 7g Sulfuric acid: 50g Methanol: 42.2g Conditioner: 0.8g

[0023] After putting in xylene, add sulfuric acid, react at 115-125°C for 3.5 hours, cool to below 55°C and add methanol, react at 55-60°C for 1 hour, then cool to below 40°C, add modifier and mix evenly.

[0024] Curing agent formulation and synthesis process for slow furan no-bake resin

[0025] Xylene: 20g Sulfuric acid: 20g Water: 30g Methanol: 29.7g Adjuster: 0.3g.

[0026] Put in xylene, add sulfuric acid, react at a temperature of 110-115°C for 4 hours, cool to below 50°C, add methanol, react at a temperature of 40-50°C for 1 hour, then cool to below 40°C, add water, adjuster and mix evenly. material.

[0027] Curing agent for fast and slow two kinds of mixed furan no-bake resin

[0028] It is mechanically mixed with fast and slow curing agents for furan no-bake resin in a certain proportion in a container, and...

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PUM

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Abstract

A solidifying agent for the self-hardening furan resin contains toluene (0-5 wt.%) or (0-20 wt%), xylene (2-10) or (5-25), sulfuric acid (35-65) or (10-40), water (0-20) or (20-60), methanol (10-45) or (6-30), alcohol (0-9) or (0-6), and regulating agent (0.05-0.9) or (0.1-0.7) for fast-hardening or slow-hardening furan resin used for casting.

Description

Technical field [0001] The invention relates to a curing agent used in furan no-setting resin sand molding (core) technology, in particular to a curing agent for furan no-setting resin that can realize mutual mixing. technical background [0002] model Operating temperature Amount added GS04 25-35℃ 30-70% (accounting for resin volume) GS03 15-25℃ 30-70% (accounting for resin volume) GC08 Below 10℃ 30-70% (accounting for resin volume) GC09 5-15℃ 30-70% (accounting for resin volume) [0003] In different seasons, the resin must be matched with different types of curing agents to achieve the required curing speed. Several curing agents cannot replace each other. Therefore, foundry manufacturers often have inventory of curing agents due to seasonal changes, thereby increasing the number of unsatisfactory curing agents. Necessary cost, in the same season, due to the difference in air temperat...

Claims

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Application Information

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IPC IPC(8): B22C1/10B22C1/22
Inventor 祝建勋刘昭荐沈烈彬
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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