CN1180002A - Carbon dioxide hardening resin sand - Google Patents
Carbon dioxide hardening resin sand Download PDFInfo
- Publication number
- CN1180002A CN1180002A CN 97100462 CN97100462A CN1180002A CN 1180002 A CN1180002 A CN 1180002A CN 97100462 CN97100462 CN 97100462 CN 97100462 A CN97100462 A CN 97100462A CN 1180002 A CN1180002 A CN 1180002A
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- Prior art keywords
- sand
- resin
- bonded sand
- resin sand
- carbon dioxide
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Abstract
The present invention relates to a CO2 hardening resin-bonded sand, including silica sand and sodium polyacrylate resin. Said resin-bonded sand possesses the CO2 quick hardening effect of sodium silicate bonded sand in the foundry production, and the retained strength of said invented resin-bonded sand, so that the cleaning process is easily implemented. Said invented resin-bonded sand doesn't produce any harmful gas in the whole production course of making core and pouring, and doesn't contaminate environment.
Description
The present invention relates to a kind of Foundry Production Modeling Material, particularly a kind of carbon dioxide hardening resin sand.
Resin sand belongs to moulding with the more emerging kind of sand, and along with the variety classes of used binding agent is also many, the most general is with phenolic resins, and Lauxite, furane resins are the resin sand of binding agent.Foreign patent application J61144235 is a kind of moulding sand binder, and the moulding sand binder of this invention is made up of phenolic resins, furane resins exactly, though adopted Ca (OH) in its invention
2But need to handle complex manufacturing through organic ester.It is slow to use its setting rate of resin sand that this binding agent makes, and does not satisfy the needs of quick core shooting technology, and produces the pernicious gas contaminated environment when cast.Chinese patent application GK85100367 is an acrylic acid series copolymer resin sand binding agent, the used moulding sand binder of this invention is acrylic acid multielement copolymerized resin, adopt more than ten kind of unsaturated acids or ester to carry out multi-component copolymer, the needed raw material kind is many, complicated process of preparation, the cost height is unsuitable for large-scale production and application.
For obtaining a kind of fast automatic type (core) production line (introducing automatic core shooter abroad) of penetrating that is applicable to, to the new type resin sand of moulding with the new demand of sand, its raw material sources are extensive exactly in the present invention, low price, easy to use, setting rate is fast, and free from environmental pollution.
The invention provides a kind of carbon dioxide hardening resin sand, comprise quartz sand, the consisting of of this resin sand:
Quartz sand: 92.0--94.0% (weight)
Polyacrylic resin: 4.0--5.5% (weight)
Calcium hydroxide: 2.0--3.0% (weight)
Gross weight is absolutely.
The mixing technique of this resin sand is; The quartz sand adding calcium hydroxide mixed system one minute, added polyacrylic resin again and mixed system one minute, and shaking out is product.
Resin sand of the present invention has the CO of water-glass sand in Foundry Production
2Quick solidification effect, after core shooter was penetrated sand automatically, air blowing 1--3 minute molding sand just can reach the requirement of strength of automatic demoulding.Retained strength after the resin sand cast of the present invention is also lower than ordinary resin sand, and very easily sand removal is handled, and resin sand of the present invention is poured into a mould and do not produced any pernicious gas in whole production processes in coremaking, and is free from environmental pollution, for ordinary resin sand does not possess.
Its characteristic technical indicator contrast is as follows:
| Index name | Unit | Water-glass sand | Ordinary resin sand | Carbon dioxide hardening resin sand |
| Setting rate | min | ????3 | ????30--60 | ????1--3 |
| Gas forming amount | ml/g | ????14-16 | ????15--17 | ????12--13 |
| 800 ℃ of collapsibilities | MPa | ????＞0.7 | ????＜0.2 | ????＜0.1 |
| Environmental pollution | Do not have | Have | Do not have |
Embodiment one:
Selected quartz sand 100g, polyacrylic resin 5.0g, calcium hydroxide 2.5g.
Get selected quartz sand 100g and added the mixed system of calcium hydroxide 2.5g one minute, add polyacrylic acid soda-base grease 5.0g then, mixed system one minute again, shake out, packing is product.
Embodiment two:
Get selected quartz sand 100g, polyacrylic resin 4.9g, calcium hydroxide 2.3g.
Above-mentioned prescription is by mixing technique the mix system identical with embodiment one.
Embodiment three:
Selected quartz sand 100g, polyacrylic resin 5.1g, calcium hydroxide 2.6g.
Above-mentioned prescription is by mixing technique the mix system identical with embodiment one, two.
Claims (1)
1. a carbon dioxide hardening resin sand comprises quartz sand, it is characterized in that: the consisting of of this resin sand:
Quartz sand: 92.0--94.0% (weight)
Polyacrylic resin: 4.0--5.5% (weight)
Calcium hydroxide: 2.0--3.0% (weight)
Gross weight is absolutely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100462A CN1044578C (en) | 1997-02-17 | 1997-02-17 | Carbon dioxide hardening resin sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97100462A CN1044578C (en) | 1997-02-17 | 1997-02-17 | Carbon dioxide hardening resin sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1180002A true CN1180002A (en) | 1998-04-29 |
| CN1044578C CN1044578C (en) | 1999-08-11 |
Family
ID=5165066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97100462A Expired - Fee Related CN1044578C (en) | 1997-02-17 | 1997-02-17 | Carbon dioxide hardening resin sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044578C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934348A (en) * | 2010-09-30 | 2011-01-05 | 黄九连 | Surface sand for precise casting and preparation thereof |
| CN103028703A (en) * | 2011-09-30 | 2013-04-10 | 齐齐哈尔轨道交通装备有限责任公司 | Carbon dioxide hardened cold box coremaking method, and car coupler body core manufacturing method |
| CN114799038A (en) * | 2022-05-26 | 2022-07-29 | 南阳仁创砂业科技有限公司 | Easily-collapsible precoated sand and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1011492B (en) * | 1987-06-06 | 1991-02-06 | 上海杨思胶粘厂 | Polyvinyl formal adhesive for casting |
| SU1664450A1 (en) * | 1989-08-07 | 1991-07-23 | Мариупольский металлургический институт | Binder for heat-setting foundry moulds and cores |
| CN1109806A (en) * | 1995-03-15 | 1995-10-11 | 张庆友 | Moulding sand adhesive for casting |
-
1997
- 1997-02-17 CN CN97100462A patent/CN1044578C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934348A (en) * | 2010-09-30 | 2011-01-05 | 黄九连 | Surface sand for precise casting and preparation thereof |
| CN101934348B (en) * | 2010-09-30 | 2013-03-13 | 黄九连 | Surface sand for precise casting and preparation thereof |
| CN103028703A (en) * | 2011-09-30 | 2013-04-10 | 齐齐哈尔轨道交通装备有限责任公司 | Carbon dioxide hardened cold box coremaking method, and car coupler body core manufacturing method |
| CN103028703B (en) * | 2011-09-30 | 2015-04-08 | 齐齐哈尔轨道交通装备有限责任公司 | Carbon dioxide hardened cold box coremaking method, and car coupler body core manufacturing method |
| CN114799038A (en) * | 2022-05-26 | 2022-07-29 | 南阳仁创砂业科技有限公司 | Easily-collapsible precoated sand and preparation method thereof |
| CN114799038B (en) * | 2022-05-26 | 2023-11-10 | 南阳仁创砂业科技有限公司 | Easily-collapsable precoated sand and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044578C (en) | 1999-08-11 |
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| C14 | Grant of patent or utility model | ||
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