CN102989995B - Sand core material used for casting copper part - Google Patents
Sand core material used for casting copper part Download PDFInfo
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- CN102989995B CN102989995B CN201210167907.8A CN201210167907A CN102989995B CN 102989995 B CN102989995 B CN 102989995B CN 201210167907 A CN201210167907 A CN 201210167907A CN 102989995 B CN102989995 B CN 102989995B
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- China
- Prior art keywords
- core material
- sand core
- adhesive
- copper part
- mentioned
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011162 core material Substances 0.000 title claims abstract description 34
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000005266 casting Methods 0.000 title abstract description 6
- 239000000853 adhesive Substances 0.000 claims abstract description 22
- 230000001070 adhesive effect Effects 0.000 claims abstract description 22
- 239000004576 sand Substances 0.000 claims abstract description 15
- 239000012744 reinforcing agent Substances 0.000 claims description 18
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical class OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 10
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 10
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 5
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 5
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- 235000019698 starch Nutrition 0.000 claims description 5
- 239000008107 starch Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 6
- 239000011347 resin Substances 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 5
- 229920001568 phenolic resin Polymers 0.000 abstract description 4
- 239000005011 phenolic resin Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract 1
- 229920001807 Urea-formaldehyde Polymers 0.000 abstract 1
- 239000007849 furan resin Substances 0.000 abstract 1
- 150000003672 ureas Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- -1 dicyanodiamine Chemical compound 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001113 umbilicus Anatomy 0.000 description 1
Abstract
The invention discloses a sand core material used for casting a copper part and a preparation method thereof. Resin taken as a main component of adhesive adopts cheaper modified urea resin, and the cost of the adhesive in the invention is about 45% of the cost of the adhesive adopting furan resin or 40% of the cost of the adhesive adopting phenolic resin, so that the sand core material used for casting disclosed by the invention has the advantage of low cost. Besides, the sand core material disclosed by the invention has better collapsibility, and single sand shaking time of a cast can be shortened for 10-15 minutes when the sand core material disclosed by the invention is used for manufacturing a sand core, so that the production efficiency is improved.
Description
Technical field
The present invention relates to field of metal casting technology, especially copper part foundry sand core material and preparation method thereof.
Background technology
At present, in copper casting industry, most water-insoluble furane resins, additive, the curing agent etc. of using of core material are as adhesive, and the use phenolic resins also having is as adhesive.All there is following shortcoming in water-insoluble furane resins and phenolic resins: 1, cost is higher; 2, collapsibility is poor, and it is longer that foundry goods shakes the sand time, causes production efficiency lower.In addition, water-insoluble furane resins also can give out penetrating odor in production process, affect plant working environment.
Summary of the invention
The object of this invention is to provide a kind of cost lower, the good copper part of collapsibility foundry sand core material and preparation method thereof.
To achieve these goals, the present invention adopts following technical scheme:
Copper part foundry sand core material, the adhesive that is mainly extra large sand 2-3wt% by 40-140 object sea sand and consumption is prepared from; Wherein, adhesive is mainly comprised of the component of following weight ratio:
Modified urea-formaldehyde resin 55-60%
Water 25-28%
Curing agent 10-12%
Reinforcing agent 3.8-5.6%.
Above-mentioned curing agent adopts diethylenetriamine (DETA), ethylenediamine, hexamethylene diamine or dicyanodiamine.
Above-mentioned reinforcing agent adopts silane adhesion reinforcing agent, polyacrylamide or starch conversion reinforcing agent.
The preparation method of copper part foundry sand core material, realizes as follows:
One, get the raw materials ready: take respectively according to the above ratio above-mentioned extra large sand, modified urea-formaldehyde resin, water, curing agent and reinforcing agent;
Two, above-mentioned modified urea-formaldehyde resin and above-mentioned water mixed and stirred, then adding above-mentioned dose, then stirring, obtaining the first mixture;
Three, in above-mentioned extra large sand, add above-mentioned curing agent, mix, after standing 1-15 minute, obtain the second mixture;
Four, above-mentioned the first mixture and above-mentioned the second mixture are evenly mixed, after standing 1-1.5 minute, just obtain foundry sand core material.
Above-mentioned curing agent adopts diethylenetriamine (DETA), ethylenediamine, hexamethylene diamine or dicyanodiamine.
Above-mentioned reinforcing agent adopts silane adhesion reinforcing agent, polyacrylamide or starch conversion reinforcing agent.
Above-mentioned modified urea-formaldehyde resin system's employing acrylate or vinyl acetate carry out modification.
Adopt after such scheme, copper part foundry sand core material of the present invention, as the resin of adhesive main component, selected the modified urea-formaldehyde resin that price is lower, in the present invention, the cost of adhesive be about adopt furane resins adhesive 45%, or adopt phenolic resins adhesive 40%, thereby make copper part foundry sand core material of the present invention there is lower-cost advantage.
On the other hand, in the present invention, modified urea-formaldehyde resin as adhesive main component is higher in the casting temperature part of the body cavity below the umbilicus, housing the bladder, kidneys and bowels rate of copper part, thereby make core material there is good collapsibility, according to test of many times, learn, the core of manufacturing by core material of the present invention, foundry goods single shakes the sand time and can shorten 10-15 minute, thereby enhances productivity.
Production scale with applicant is calculated, and adopts core material of the present invention, and the company that can be every year saves core production cost more than approximately 300,000 yuan.The core of manufacturing by core material of the present invention, foundry goods single shakes the sand time and can shorten 10-15 minute, has improved production efficiency, and the economic benefit of generation is considerable especially.
The specific embodiment
Copper part foundry sand core material of the present invention, the adhesive that is mainly extra large sand 2-3wt% by 40-140 object sea sand and consumption is prepared from; Wherein, adhesive is mainly comprised of the component of following weight ratio:
Modified urea-formaldehyde resin 55-60%
Water 25-28%
Curing agent 10-12%
Reinforcing agent 3.8-5.6%.
The preparation method of copper part foundry sand core material, realizes as follows:
One, get the raw materials ready: prepare respectively 40-140 object sea sand and adhesive, the consumption of adhesive is the 2-3wt% of extra large sand consumption, and adhesive mainly forms (percentage of following each component be take the total amount of adhesive calculate as radix) by the component of following weight ratio:
Modified urea-formaldehyde resin 55-60%
Water 25-28%
Curing agent 10-12%
Reinforcing agent 3.8-5.6%
Two, by above-mentioned modified urea-formaldehyde resin with above-mentioned water mixes and by mixer stir (or above-mentioned modified urea-formaldehyde resin is soaked 48 hours in above-mentioned water), add again above-mentioned dose, can stir by mixer again, obtain the first mixture;
Three, in above-mentioned extra large sand, add above-mentioned curing agent, mix, after standing 1-15 minute, obtain the second mixture;
Four, above-mentioned the first mixture and above-mentioned the second mixture are mixed, stir, after standing 1-1.5 minute, just obtain foundry sand core material.The core material preparing should be finished in 1 hour.
In the present invention, curing agent adopts diethylenetriamine (DETA), ethylenediamine, hexamethylene diamine or dicyanodiamine; Reinforcing agent adopts silane adhesion reinforcing agent, polyacrylamide or starch conversion reinforcing agent; Modified urea-formaldehyde resin carries out modification with acrylate or vinyl acetate.Herein, diethylenetriamine (DETA), ethylenediamine, hexamethylene diamine, dicyanodiamine, silane adhesion reinforcing agent, polyacrylamide, starch conversion reinforcing agent and be all the commercially available conventional industrial chemicals of Chemical market with the modified urea-formaldehyde resin that acrylate or vinyl acetate carry out modification.Wherein, the modified urea-formaldehyde resin that carries out modification with acrylate or vinyl acetate, can improve its toughness, improved resistance to ag(e)ing (see the modification of the Lauxite of the happy grade of Pan Yu, come from < < < < glass fibre > > the 4th phase P18-P20 in 2004).
In the present invention, because the modified urea-formaldehyde resin as adhesive main component has stronger toughness, make also there is with the core of core material manufacture of the present invention the feature that intensity is higher, thereby the spoilage that makes core is lower, surface smoothness good, more smooth bright and clean with the produced core cavity of this core, be difficult for producing pore, casting yield can improve 1-2%.
Claims (4)
1. copper part foundry sand core material, is characterized in that: the adhesive that is mainly extra large sand 2-3wt% by 40-140 object sea sand and consumption is prepared from; Wherein, adhesive is mainly comprised of the component of following weight ratio:
2. copper part foundry sand core material according to claim 1, is characterized in that: above-mentioned curing agent adopts diethylenetriamine (DETA), ethylenediamine, hexamethylene diamine or dicyanodiamine.
3. copper part foundry sand core material according to claim 1, is characterized in that: above-mentioned reinforcing agent adopts silane adhesion reinforcing agent, polyacrylamide or starch conversion reinforcing agent.
4. copper part foundry sand core material according to claim 1, is characterized in that: above-mentioned modified urea-formaldehyde resin is to adopt acrylate or vinyl acetate to carry out modification.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134675.5A CN103909210B (en) | 2012-05-25 | 2012-05-25 | Preparation method of sand core material for casting copper parts |
| CN201210167907.8A CN102989995B (en) | 2012-05-25 | 2012-05-25 | Sand core material used for casting copper part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210167907.8A CN102989995B (en) | 2012-05-25 | 2012-05-25 | Sand core material used for casting copper part |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410134675.5A Division CN103909210B (en) | 2012-05-25 | 2012-05-25 | Preparation method of sand core material for casting copper parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102989995A CN102989995A (en) | 2013-03-27 |
| CN102989995B true CN102989995B (en) | 2014-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210167907.8A Active CN102989995B (en) | 2012-05-25 | 2012-05-25 | Sand core material used for casting copper part |
Country Status (1)
| Country | Link |
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| CN (1) | CN102989995B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586400A (en) * | 2013-10-31 | 2014-02-19 | 吴江市液铸液压件铸造有限公司 | Preparation process of furan resin sand |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5566742A (en) * | 1994-04-13 | 1996-10-22 | Nemoto; Masaru | Casting method using core made of synthetic resin, core made of synthetic resin, and cast product |
| JP3557430B2 (en) * | 1993-04-22 | 2004-08-25 | フォセコ インターナショナル リミテッド | Metal casting mold, metal casting method, and molded article of refractory composition used therefor |
| CN101012360A (en) * | 2007-02-01 | 2007-08-08 | 厦门大学 | Artwork with modified urea-formaldehyde resin as adhesive and preparing method thereof |
| CN102000777A (en) * | 2010-12-21 | 2011-04-06 | 潍柴动力股份有限公司 | Core sand mixing process, heated core box core-making process and sand core prepared therefrom |
| CN102039375A (en) * | 2010-11-20 | 2011-05-04 | 沈阳工业大学 | Method for quickly manufacturing high-temperature alloy hollow blade casting |
| CN102229791A (en) * | 2011-06-14 | 2011-11-02 | 王喆 | Environment-friendly type urea-formaldehyde resin adhesive and production method thereof |
-
2012
- 2012-05-25 CN CN201210167907.8A patent/CN102989995B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3557430B2 (en) * | 1993-04-22 | 2004-08-25 | フォセコ インターナショナル リミテッド | Metal casting mold, metal casting method, and molded article of refractory composition used therefor |
| US5566742A (en) * | 1994-04-13 | 1996-10-22 | Nemoto; Masaru | Casting method using core made of synthetic resin, core made of synthetic resin, and cast product |
| CN101012360A (en) * | 2007-02-01 | 2007-08-08 | 厦门大学 | Artwork with modified urea-formaldehyde resin as adhesive and preparing method thereof |
| CN102039375A (en) * | 2010-11-20 | 2011-05-04 | 沈阳工业大学 | Method for quickly manufacturing high-temperature alloy hollow blade casting |
| CN102000777A (en) * | 2010-12-21 | 2011-04-06 | 潍柴动力股份有限公司 | Core sand mixing process, heated core box core-making process and sand core prepared therefrom |
| CN102229791A (en) * | 2011-06-14 | 2011-11-02 | 王喆 | Environment-friendly type urea-formaldehyde resin adhesive and production method thereof |
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| CN102989995A (en) | 2013-03-27 |
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| CB03 | Change of inventor or designer information |
Inventor after: Zheng Huozong Inventor after: Jue Fuwen Inventor after: Li Jianmin Inventor after: Pei Jun Inventor before: Wang Chunxiang Inventor before: Wang Zhijun Inventor before: Zheng Huozong Inventor before: Xiang Changbin |
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Free format text: CORRECT: INVENTOR; FROM: WANG CHUNXIANG WANG ZHIJUN ZHENG HUOZONG XIANG CHANGBIN TO: ZHENG HUOZONG QUE FUWEN LI JIANMIN PEI JUN |
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