CN103521690A - Easily-collapsible mud core molding sand and preparation method thereof - Google Patents
Easily-collapsible mud core molding sand and preparation method thereof Download PDFInfo
- Publication number
- CN103521690A CN103521690A CN201310481215.5A CN201310481215A CN103521690A CN 103521690 A CN103521690 A CN 103521690A CN 201310481215 A CN201310481215 A CN 201310481215A CN 103521690 A CN103521690 A CN 103521690A
- Authority
- CN
- China
- Prior art keywords
- parts
- sand
- molding sand
- mud core
- collapsible
- Prior art date
- 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.)
- Pending
Links
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses easily-collapsible mud core molding sand. The easily-collapsible mud core molding sand is prepared from the following raw materials in parts by weight: 200-240 parts of chromite sand, 20-25 parts of sepiolite, 50-56 parts of kaolin powder, 2-5 parts of steel fibers, 20-25 parts of sawdust, 10-15 parts of gypsum powder, 2-3 parts of quick lime, 10-14 parts of corn meal powder, 3-5 parts of furan resin, 1-2 parts of benzenesulfonic acid, 5-7 parts of ethyl acetate and an appropriate amount of water. According to the easily-collapsible mud core molding sand disclosed by the invention, the chromite sand, the sepiolite, the kaolin and the like are roasted and roasted at a high temperature dispersing and grinding of added gypsum powder and the like are combined, so that the molding sand not only has excellent smoothness, gas permeability, cohesiveness, toughness and plasticity, but also has cohesiveness resistance; the steel fibers are used to increase strength of the molding sand; the sawdust is used to increase collapsibility and environment is not polluted. High polymer resin is used as a binding agent, so that the easily-collapsible mud core molding sand is easily collapsible at the high temperature. Besides, the molding sand disclosed by the invention is suitable for facing sand and mud core sand of a large cast steel piece.
Description
Technical field
The present invention relates to a kind of casting field, relate in particular to a kind of easy defeated and dispersed mud core molding sand and preparation method thereof.
Background technology
Molding sand is in casting, to be used for the material of moulding.Molding sand is generally mixed according to a certain percentage by Modeling Materials such as Foundry sand, moulding sand binder and additional things, also available natural silica sand argillaceous, the sand formulation Sand particle diameter that common cast aluminium is used is too large or too little, molding sand material footpath is too large, although gas permeability is better, aloxite part surface ratio is more coarse, fineness is bad, molding sand material footpath is too little, causes sand mold gas permeability bad, and aluminium casting has pore to produce.Domestic and international widely used coal dust clay green-sand, generally by the mixed system of roughing sand, binding agent, coal dust additive etc. and water, formed, there is certain anti-scab effect and the cost of material is low, production efficiency is high, but its consumption is large, discharge is serious, at casting process coal dust firing, decompose and produce toxic gas and pollute.
Molding sand is different by binding agent used, can be divided into clay-bonded sand, water-glass sand, cement bonded sand, quartz sand etc., and that with clay-bonded sand, water-glass sand and quartz sand, uses is maximum.The effect of molding sand in Foundry Production is very important, and the casting wasted product causing because of the poor quality of molding sand accounts for 30～50% of the total waste product of foundry goods.Conventionally to the requirement of molding sand, be: 1, there is higher intensity and heat endurance, to bear the effect of various external force and high temperature.2, good mobility, the ability that molding sand mutually moves between sand grains under external force or Action of Gravity Field own.3, certain plasticity, molding sand is out of shape under external force, can keep the ability of the shape that gives after external force is removed.4, good gas permeability, molding sand hole sees through the ability of gas.5, high collapsibility, weighs up again grittiness, and after casting solidification, whether molding sand easily destroys, the performance of whether easily removing from foundry goods.
Current casting field development rapidly, higher for the performance requirement of steel-casting and ironcasting, thereby require further to promote the performance of molding sand.
Summary of the invention
The object of the present invention is to provide a kind of easy defeated and dispersed mud core molding sand and preparation method thereof, this molding sand has high strength, easy defeated and dispersed, feature that plasticity is good.
Technical scheme of the present invention is as follows:
A defeated and dispersed mud core molding sand, is characterized in that being made by the raw material of following weight portion: chromite sand 200-240, sepiolite 20-25, kaolin powder 50-56, steel fibre 2-5, wood chip 20-25, land plaster 10-15, quick lime 2-3, corn flour 10-14, furane resins 3-5, benzene sulfonic acid 1-2, ethyl acetate 5-7, water are appropriate;
The preparation method of described easy defeated and dispersed mud core molding sand, it is characterized in that comprising the following steps: chromite sand, sepiolite, kaolin powder mixed powder are broken into 100-200 order powder, then add land plaster, quick lime, corn flour, suitable quantity of water, dispersed with stirring, pugging, send in 1440-1460 ℃ of calcining furnace and calcine 4-5 hour, take out and be crushed to 50-100 order, obtain calcining material; Steel fibre, wood chip, ethyl acetate are mixed, grind 20-30 minute, then mix 10-15 minute with other residual components and get final product.
Beneficial effect of the present invention
The present invention has used chromite sand, sepiolite, kaolin etc., through high-temperature calcination, in conjunction with adding the dispersion grinding such as land plaster, makes molding sand not only have excellent smoothness, gas permeability, caking property, toughness, plasticity, also has antistick characteristic; By using steel fibre, increased sand bond; By using wood chip, increased collapsibility, and free from environmental pollution, the present invention uses macromolecule resin as binding agent, and high temperature is easily defeated and dispersed.Molding sand of the present invention is suitable for the facing sand of large-scale steel-casting, loam core sand.
The specific embodiment
A defeated and dispersed mud core molding sand, by following weight portion (kilogram) raw material make: chromite sand 220, sepiolite 22, kaolin powder 53, steel fibre 4, wood chip 23, land plaster 14, quick lime 2.5, corn flour 13, furane resins 4, benzene sulfonic acid 1.5, ethyl acetate 6, water are appropriate;
The preparation method of described easy defeated and dispersed mud core molding sand, comprise the following steps: chromite sand, sepiolite, kaolin powder mixed powder are broken into 300 order powder, then add land plaster, quick lime, corn flour, suitable quantity of water, dispersed with stirring, pugging, send in 1450 ℃ of calcining furnaces and calcine 4.5 hours, take out and be crushed to 80 orders, obtain calcining material; Steel fibre, wood chip, ethyl acetate are mixed, grind 25 minutes, then mix 13 minutes with other residual components and get final product.
The processing performance of the molding sand that the present invention makes:
Green compression strength: 0.121Mpa, air penetrability: 131%, hot green tensile strength: 423Kpa, shatter index: 87%.
Claims (2)
1. an easy defeated and dispersed mud core molding sand, is characterized in that being made by the raw material of following weight portion: chromite sand 200-240, sepiolite 20-25, kaolin powder 50-56, steel fibre 2-5, wood chip 20-25, land plaster 10-15, quick lime 2-3, corn flour 10-14, furane resins 3-5, benzene sulfonic acid 1-2, ethyl acetate 5-7, water are appropriate.
2. the preparation method of easy defeated and dispersed mud core molding sand according to claim 1, it is characterized in that comprising the following steps: chromite sand, sepiolite, kaolin powder mixed powder are broken into 100-200 order powder, then add land plaster, quick lime, corn flour, suitable quantity of water, dispersed with stirring, pugging, send in 1440-1460 ℃ of calcining furnace and calcine 4-5 hour, take out and be crushed to 50-100 order, obtain calcining material; Steel fibre, wood chip, ethyl acetate are mixed, grind 20-30 minute, then mix 10-15 minute with other residual components and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481215.5A CN103521690A (en) | 2013-10-16 | 2013-10-16 | Easily-collapsible mud core molding sand and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310481215.5A CN103521690A (en) | 2013-10-16 | 2013-10-16 | Easily-collapsible mud core molding sand and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103521690A true CN103521690A (en) | 2014-01-22 |
Family
ID=49924245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310481215.5A Pending CN103521690A (en) | 2013-10-16 | 2013-10-16 | Easily-collapsible mud core molding sand and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103521690A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057011A (en) * | 2014-05-28 | 2014-09-24 | 安徽鑫润新型材料有限公司 | Casting molding sand for loam core and preparation method of casting molding sand |
| CN104162626A (en) * | 2014-08-20 | 2014-11-26 | 合肥江淮铸造有限责任公司 | Easily shaped molding sand and preparation method thereof |
| CN104174809A (en) * | 2014-08-22 | 2014-12-03 | 合肥江淮铸造有限责任公司 | Recyclable casting molding sand with good air permeability and preparation method of sand |
| CN104475658A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Middle-small cast iron molding sand and preparation method thereof |
| CN104475656A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-caking foundry molding sand and preparation method thereof |
| CN104475650A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-adhesion cast molding sand and preparation method thereof |
| CN104475648A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Resin molding sand with characteristics of high heat-resistance and gas permeability, and preparation method thereof |
| CN106077431A (en) * | 2016-07-29 | 2016-11-09 | 无锡市三峰仪器设备有限公司 | A kind of moulding sand for casting of molding sand experimental apparatus |
| CN107096872A (en) * | 2017-07-08 | 2017-08-29 | 安徽雪雨洁具有限公司 | Defeated and dispersed auxiliary agent is used in a kind of tap casting sand core processing |
| CN107262663A (en) * | 2017-06-26 | 2017-10-20 | 安徽安顺硅基玻璃原料有限公司 | A kind of molding sand containing silica sand and preparation method thereof |
| CN113976817A (en) * | 2021-08-14 | 2022-01-28 | 曲阜市铸造材料厂 | Preparation method of mixed binder for green sand |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284674A (en) * | 2011-08-24 | 2011-12-21 | 无锡华冶钢铁有限公司 | Anti-sticking cast molding sand |
| CN102728777A (en) * | 2012-06-08 | 2012-10-17 | 繁昌县琦祥铸造厂 | Multicomponent mixed casting molding sand and preparation method thereof |
| CN102728776A (en) * | 2012-06-08 | 2012-10-17 | 繁昌县琦祥铸造厂 | Low-cost environment-friendly molding sand and preparation method thereof |
| CN102814461A (en) * | 2012-08-20 | 2012-12-12 | 合肥江淮铸造有限责任公司 | Molding sand for casting |
| CN103056283A (en) * | 2012-12-25 | 2013-04-24 | 马鞍山市万鑫铸造有限公司 | Molding sand containing halloysite and preparation method thereof |
| CN103302230A (en) * | 2012-03-14 | 2013-09-18 | 武安市文祥合金制造有限公司 | Special sand proportiom for casting |
-
2013
- 2013-10-16 CN CN201310481215.5A patent/CN103521690A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284674A (en) * | 2011-08-24 | 2011-12-21 | 无锡华冶钢铁有限公司 | Anti-sticking cast molding sand |
| CN103302230A (en) * | 2012-03-14 | 2013-09-18 | 武安市文祥合金制造有限公司 | Special sand proportiom for casting |
| CN102728777A (en) * | 2012-06-08 | 2012-10-17 | 繁昌县琦祥铸造厂 | Multicomponent mixed casting molding sand and preparation method thereof |
| CN102728776A (en) * | 2012-06-08 | 2012-10-17 | 繁昌县琦祥铸造厂 | Low-cost environment-friendly molding sand and preparation method thereof |
| CN102814461A (en) * | 2012-08-20 | 2012-12-12 | 合肥江淮铸造有限责任公司 | Molding sand for casting |
| CN103056283A (en) * | 2012-12-25 | 2013-04-24 | 马鞍山市万鑫铸造有限公司 | Molding sand containing halloysite and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 杜西灵等: "《铸造技术与应用案例》", 31 October 2009, 机械工业出版社 * |
| 耿浩然等: "《实用铸件重力成型技术》", 31 October 2003, 化学工业出版社 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057011A (en) * | 2014-05-28 | 2014-09-24 | 安徽鑫润新型材料有限公司 | Casting molding sand for loam core and preparation method of casting molding sand |
| CN104057011B (en) * | 2014-05-28 | 2016-08-24 | 安徽鑫润新型材料有限公司 | A kind of loam core casting sand and preparation method thereof |
| CN104162626A (en) * | 2014-08-20 | 2014-11-26 | 合肥江淮铸造有限责任公司 | Easily shaped molding sand and preparation method thereof |
| CN104174809B (en) * | 2014-08-22 | 2016-07-06 | 合肥江淮铸造有限责任公司 | A kind of recyclable good permeability casting sand and preparation method thereof |
| CN104174809A (en) * | 2014-08-22 | 2014-12-03 | 合肥江淮铸造有限责任公司 | Recyclable casting molding sand with good air permeability and preparation method of sand |
| CN104475658A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Middle-small cast iron molding sand and preparation method thereof |
| CN104475648A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Resin molding sand with characteristics of high heat-resistance and gas permeability, and preparation method thereof |
| CN104475650A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-adhesion cast molding sand and preparation method thereof |
| CN104475648B (en) * | 2014-11-03 | 2016-08-17 | 芜湖市创源新材料有限公司 | A kind of high heat-resisting permeable resin molding sand and preparation method thereof |
| CN104475656A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-caking foundry molding sand and preparation method thereof |
| CN106077431A (en) * | 2016-07-29 | 2016-11-09 | 无锡市三峰仪器设备有限公司 | A kind of moulding sand for casting of molding sand experimental apparatus |
| CN107262663A (en) * | 2017-06-26 | 2017-10-20 | 安徽安顺硅基玻璃原料有限公司 | A kind of molding sand containing silica sand and preparation method thereof |
| CN107096872A (en) * | 2017-07-08 | 2017-08-29 | 安徽雪雨洁具有限公司 | Defeated and dispersed auxiliary agent is used in a kind of tap casting sand core processing |
| CN113976817A (en) * | 2021-08-14 | 2022-01-28 | 曲阜市铸造材料厂 | Preparation method of mixed binder for green sand |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103521690A (en) | Easily-collapsible mud core molding sand and preparation method thereof | |
| CN104057018B (en) | A kind of moulding sand for casting and preparation method thereof | |
| CN103521681A (en) | Molding sand and preparation method thereof | |
| CN104057013B (en) | A kind of environmental protection casting sand and preparation method thereof | |
| CN103495693A (en) | High-temperature-resisting easy collapse molding sand and preparation method thereof | |
| CN104057014B (en) | A kind of molding sand for casting gray iron and preparation method thereof | |
| CN103586395A (en) | Molding sand for automatic production line and preparation method thereof | |
| CN103586399A (en) | Molding sand capable of quick air permeation and heat dissipation and preparation method thereof | |
| CN103521678A (en) | Molding sand capable of increasing brightness of castings and preparation method thereof | |
| CN103521684A (en) | Corundum-mullite modified molding sand and preparation method thereof | |
| CN103495692A (en) | Mud core moulding sand for casting and preparation method thereof | |
| CN104057017A (en) | Molding sand for large-size cast piece and preparation method thereof | |
| CN103495698A (en) | High-strength moulding sand and preparation method thereof | |
| CN103495695A (en) | Chilled mud-core molding sand manufactured from chromite sand and method for manufacturing chilled mud-core molding sand | |
| CN103521693A (en) | High-efficiency chilling molding sand and preparation method thereof | |
| CN103521689A (en) | Molding sand for recycling old sand and preparation method thereof | |
| CN103521691A (en) | Modified bentonite molding sand and preparation method thereof | |
| CN103521695A (en) | Molding sand for casting iron balls and preparation method of molding sand | |
| CN104057012A (en) | High-plasticity molding sand and preparation method thereof | |
| CN103586396A (en) | Molding sand for non-ferrous castings and preparation method thereof | |
| CN103495694A (en) | Yellow-soil foundry sand and preparation method thereof | |
| CN104057015A (en) | Casting molding sand for non-ferrous metal and preparation method of casting molding sand | |
| CN103521677A (en) | Mud-core molding sand and preparation method thereof | |
| CN103498061A (en) | High-aluminium bauxite cast-moulding sand and preparation method thereof | |
| CN103521696A (en) | Molding sand for pressure plate casting and preparation method of molding sand |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140122 |
|
| RJ01 | Rejection of invention patent application after publication |