CN103909210A - Preparation method for sand core material for casting copper part - Google Patents
Preparation method for sand core material for casting copper part Download PDFInfo
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- CN103909210A CN103909210A CN201410134675.5A CN201410134675A CN103909210A CN 103909210 A CN103909210 A CN 103909210A CN 201410134675 A CN201410134675 A CN 201410134675A CN 103909210 A CN103909210 A CN 103909210A
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Abstract
The invention discloses a preparation method for a sand core material for casting a copper part. According to the method, resin which is used as a main component of a binding agent is modified urea resin with low price. According to the preparation method, the cost of the binding agent is about 45% of a binding agent of furan resin or adopts 40% of a binding agent of phenolic resin, so that the sand core material for casting the copper part, which is prepared by the method, has the advantage of low cost; furthermore, the sand core material has good collapsibility, a sand core is manufactured by the sand core material prepared by the method, and the one-time sand shaking time of a casting can be shortened for 10-15 minutes so that the production efficiency is improved.
Description
Patent application of the present invention is that name is called " copper part foundry sand core material and preparation method thereof ", and the applying date is 2012/05/25, the divisional application that application number is 201210167907.8.
Technical field
The present invention relates to field of metal casting technology, especially the preparation method of copper part foundry sand core material.
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 preparation method of the good copper part of collapsibility foundry sand core material.
To achieve these goals, the present invention adopts following technical scheme:
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 wherein, adhesive is mainly made up of the component of following weight ratio:
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, leave standstill after 1-15 minute, obtain the second mixture;
Four, above-mentioned the first mixture and above-mentioned the second mixture are evenly mixed, leave standstill and just obtain foundry sand core material after 1-1.5 minute.
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, the preparation method of copper part foundry sand core material of the present invention, select as the resin of adhesive main component 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 the copper part foundry sand core material that the inventive method prepares 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, learn according to test of many times, 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, the core material that adopts the inventive method to prepare, and the company that can be every year saves core production cost more than approximately 300,000 yuan.The core that the core material for preparing by the inventive method is manufactured, 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.
Detailed description of the invention
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 made up of the component of following weight ratio:
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, adhesive mainly forms (percentage of following each component is to calculate taking the total amount of adhesive as radix) by the component of following weight ratio:
Two, by above-mentioned modified urea-formaldehyde resin with above-mentioned water mixes and stir (or above-mentioned modified urea-formaldehyde resin is soaked 48 hours in above-mentioned water) by mixer, then add above-mentioned dose, then can stir by mixer, obtain the first mixture;
Three, in above-mentioned extra large sand, add above-mentioned curing agent, mix, leave standstill after 1-15 minute, obtain the second mixture;
Four, above-mentioned the first mixture and above-mentioned the second mixture are mixed, stir, leave standstill and just obtain foundry sand core material after 1-1.5 minute.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 with the modified urea-formaldehyde resin that acrylate or vinyl acetate carry out modification be all the commercially available conventional industrial chemicals of Chemical market.Wherein, the modified urea-formaldehyde resin that carries out modification with acrylate or vinyl acetate, can improve its toughness, has 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, owing to thering is stronger toughness as the modified urea-formaldehyde resin of adhesive main component, 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. the preparation method of copper part foundry sand core material, is characterized in that: realize 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 wherein, adhesive is mainly made up of the component of following weight ratio:
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 reinforcing agent, then stirring, obtaining the first mixture;
Three, in above-mentioned extra large sand, add above-mentioned curing agent, mix, leave standstill after 1-15 minute, obtain the second mixture;
Four, above-mentioned the first mixture and above-mentioned the second mixture are evenly mixed, leave standstill and just obtain foundry sand core material after 1-1.5 minute.
2. the preparation method of 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. the preparation method of 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. the preparation method of 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 (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 |
|---|---|---|---|
| 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 |
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 |
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| CN103909210A true CN103909210A (en) | 2014-07-09 |
| CN103909210B 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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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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| CN103909210B (en) | 2020-10-27 |
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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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