CN103909210B - Preparation method of sand core material for casting copper parts - Google Patents
Preparation method of sand core material for casting copper parts Download PDFInfo
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- CN103909210B CN103909210B CN201410134675.5A CN201410134675A CN103909210B CN 103909210 B CN103909210 B CN 103909210B CN 201410134675 A CN201410134675 A CN 201410134675A CN 103909210 B CN103909210 B CN 103909210B
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Abstract
The invention discloses a preparation method of a sand core material for copper casting, wherein in the method, a resin used as a main component of a binder is a modified urea-formaldehyde resin with lower price, and in the invention, the cost of the binder is about 45% of that of a binder adopting furan resin or 40% of that of a binder adopting phenolic resin, so that the sand core material for casting prepared by the method has the advantage of lower cost. On the other hand, the sand core material has better collapsibility, so that the sand core manufactured by the sand core material prepared by the method can shorten the single sand shaking time of a casting by 10-15 minutes, thereby improving the production efficiency.
Description
The patent application of the invention is a divisional application entitled "sand core material for casting copper parts and a preparation method thereof", with the application date of 2012/05/25 and the application number of 201210167907.8.
Technical Field
The invention relates to the field of metal casting, in particular to a preparation method of a sand core material for copper part casting.
Background
At present, in the copper casting industry, most of sand core materials use water-insoluble furan resins, additives, curing agents and the like as binders, and some of the sand core materials use phenolic resins as binders. Both the water-insoluble furan resin and the phenol resin have the following disadvantages: 1. the cost is high; 2. the collapsibility is poor, the sand shaking time of the casting is long, and the production efficiency is low. In addition, the water-insoluble furan resin can emit pungent odor in the production process, and the workshop operation environment is affected.
Disclosure of Invention
The invention aims to provide a preparation method of a sand core material for casting copper parts, which is low in cost and good in collapsibility.
In order to achieve the purpose, the invention adopts the following technical scheme:
the preparation method of the sand core material for casting the copper part is realized by the following steps:
firstly, preparing materials: respectively preparing 40-140 meshes of sea sand and a binder, wherein the binder accounts for 2-3wt% of the sea sand, and the binder mainly comprises the following components in percentage by weight:
respectively weighing the sea sand, the modified urea-formaldehyde resin, the water, the curing agent and the reinforcing agent according to the proportion;
mixing the modified urea-formaldehyde resin and the water together, uniformly stirring, adding the reinforcing agent, and uniformly stirring to obtain a first mixture;
thirdly, adding the curing agent into the sea sand, uniformly mixing, and standing for 1-15 minutes to obtain a second mixture;
and fourthly, uniformly mixing the first mixture and the second mixture together, and standing for 1-1.5 minutes to obtain the sand core material for casting.
The curing agent adopts Diethylenetriamine (DETA), ethylenediamine, hexamethylenediamine or dicyanodiamine.
The reinforcing agent adopts silane bonding reinforcing agent, polyacrylamide or starch modification reinforcing agent.
The modified urea-formaldehyde resin is modified by acrylic ester or vinyl acetate.
After the scheme is adopted, the resin serving as the main component of the adhesive is the low-price modified urea-formaldehyde resin, and the cost of the adhesive is about 45% of that of the adhesive adopting furan resin or 40% of that of the adhesive adopting phenolic resin, so that the sand core material for casting the copper part prepared by the method has the advantage of low cost.
On the other hand, the modified urea-formaldehyde resin as the main component of the binder has higher coking rate at the casting temperature of the copper part, so that the sand core material has better collapsibility, and multiple tests show that the sand core manufactured by the sand core material can shorten the sand shaking time of a casting piece by 10-15 minutes, thereby improving the production efficiency.
The sand core material prepared by the method can save the production cost of the sand core for a company by more than 30 ten thousand yuan per year according to the production scale of the applicant. The sand core made of the sand core material prepared by the method can shorten the single sand shaking time of a casting by 10-15 minutes, improve the production efficiency and generate considerable economic benefit.
Detailed Description
The sand core material for casting the copper part is mainly prepared from sea sand of 40-140 meshes and a bonding agent with the dosage of 2-3wt% of the sea sand; wherein, the adhesive mainly comprises the following components by weight ratio:
the preparation method of the sand core material for casting the copper part is realized by the following steps:
firstly, preparing materials: respectively preparing 40-140 meshes of sea sand and a binder, wherein the binder is 2-3wt% of the sea sand, and the binder mainly comprises the following components in percentage by weight (the percentage of each component is calculated by taking the total amount of the binder as a base):
mixing the modified urea-formaldehyde resin and the water together, uniformly stirring the mixture by a stirrer (or soaking the modified urea-formaldehyde resin in the water for 48 hours), adding the reinforcing agent, and uniformly stirring the mixture by the stirrer to obtain a first mixture;
thirdly, adding the curing agent into the sea sand, uniformly mixing, and standing for 1-15 minutes to obtain a second mixture;
and fourthly, mixing the first mixture and the second mixture together, uniformly stirring, and standing for 1-1.5 minutes to obtain the sand core material for casting. The formulated sand core material should be used up within 1 hour.
In the invention, the curing agent adopts Diethylenetriamine (DETA), ethylenediamine, hexamethylenediamine or dicyanodiamine; the reinforcing agent is a silane bonding reinforcing agent, polyacrylamide or starch modification reinforcing agent; the modified urea-formaldehyde resin is modified by acrylate or vinyl acetate. Here, Diethylenetriamine (DETA), ethylenediamine, hexamethylenediamine, dicyanodiamine, silane adhesion enhancer, polyacrylamide, starch modification enhancer and modified urea resin modified with acrylate or vinyl acetate are conventional chemical raw materials available in chemical markets. The modified urea-formaldehyde resin modified with acrylate or vinyl acetate has improved toughness and aging resistance (see the modification of urea-formaldehyde resin such as pentopaz, from "glass fiber" 2004, stage 4, P18-P20).
In the invention, because the modified urea-formaldehyde resin as the main component of the adhesive has stronger toughness, the sand core manufactured by the sand core material also has the characteristic of higher strength, thereby the damage rate of the sand core is lower, the surface smoothness is good, the inner cavity of the casting manufactured by the sand core is smoother and cleaner, air holes are not easy to generate, and the casting yield can be improved by 1-2%.
Claims (4)
1. The preparation method of the sand core material for casting the copper part is characterized by comprising the following steps of: the method is realized by the following steps:
firstly, preparing materials: respectively preparing 40-140 meshes of sea sand and a binder, wherein the binder accounts for 2-3wt% of the sea sand, and the binder mainly comprises the following components in percentage by weight:
respectively weighing the sea sand, the modified urea-formaldehyde resin, the water, the curing agent and the reinforcing agent according to the proportion;
mixing the modified urea-formaldehyde resin and the water together, uniformly stirring, adding the reinforcing agent, and uniformly stirring to obtain a first mixture;
thirdly, adding the curing agent into the sea sand, uniformly mixing, and standing for 1-15 minutes to obtain a second mixture;
and fourthly, uniformly mixing the first mixture and the second mixture together, and standing for 1-1.5 minutes to obtain the sand core material for casting.
2. The method for preparing a sand core material for casting copper parts as claimed in claim 1, wherein: the curing agent adopts Diethylenetriamine (DETA), ethylenediamine, hexamethylenediamine or dicyanodiamine.
3. The method for preparing a sand core material for casting copper parts as claimed in claim 1, wherein: the reinforcing agent adopts silane bonding reinforcing agent, polyacrylamide or starch modification reinforcing agent.
4. The method for preparing a sand core material for casting copper parts as claimed in claim 1, wherein: the modified urea-formaldehyde resin is modified by acrylic ester or vinyl acetate.
Priority Applications (1)
| 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 |
Applications Claiming Priority (2)
| 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 |
| CN201410134675.5A CN103909210B (en) | 2012-05-25 | 2012-05-25 | Preparation method of sand core material for casting copper parts |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210167907.8A Division CN102989995B (en) | 2012-05-25 | 2012-05-25 | Sand core material used for casting copper part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103909210A CN103909210A (en) | 2014-07-09 |
| CN103909210B true CN103909210B (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410134675.5A Active CN103909210B (en) | 2012-05-25 | 2012-05-25 | Preparation method of sand core material for casting copper parts |
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| CN (1) | CN103909210B (en) |
Citations (7)
| 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 |
| CN1314257A (en) * | 2001-04-16 | 2001-09-26 | 赵庆华 | Sand-plastic handicraft and its producing technique |
| 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 CN201410134675.5A patent/CN103909210B/en active Active
Patent Citations (7)
| 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 |
| CN1314257A (en) * | 2001-04-16 | 2001-09-26 | 赵庆华 | Sand-plastic handicraft and its producing technique |
| 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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| CN103909210A (en) | 2014-07-09 |
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Inventor after: Wang Chunxiang Inventor after: Xiang Changbin Inventor after: Zheng Huozong Inventor before: Wang Chunxiang Inventor before: Zheng Huozong Inventor before: Pei Jun |
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Free format text: CORRECT: INVENTOR; FROM: WANG CHUNXIANG ZHENG HUOZONG PEI JUN TO: WANG CHUNXIANG XIANG CHANGBIN ZHENG HUOZONG |
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Effective date of registration: 20211101 Granted publication date: 20201027 |
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