CN103495693A - High-temperature-resisting easy collapse molding sand and preparation method thereof - Google Patents

High-temperature-resisting easy collapse molding sand and preparation method thereof Download PDF

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Publication number
CN103495693A
CN103495693A CN201310481175.4A CN201310481175A CN103495693A CN 103495693 A CN103495693 A CN 103495693A CN 201310481175 A CN201310481175 A CN 201310481175A CN 103495693 A CN103495693 A CN 103495693A
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parts
powder
sand
molding sand
calcining
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CN201310481175.4A
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Chinese (zh)
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孙爱琴
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HEFEI TENVER PRECISION CASTING CO Ltd
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HEFEI TENVER PRECISION CASTING CO Ltd
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Priority to CN201310481175.4A priority Critical patent/CN103495693A/en
Publication of CN103495693A publication Critical patent/CN103495693A/en
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Abstract

High-temperature-resisting easy collapse molding sand is made from, by weight, 240-280 parts of quartz sand, 50-55 parts of lightweight calcium carbonate powder, 20-30 parts of hollow ceramic microspheres, 10-15 parts of hollow glass microspheres, 40-55 parts of aluminum silicate powder, 25-30 parts of titanium dioxide, 35-40 parts of fluorite nano-powder, 30-40 parts of gypsum whisker, 60-70 parts of expanded perlite, 10-15 parts of talcum powder, 2-4 parts of sodium metasilicate, 1-2 parts of glucose powder, 1-2 parts of urea, 1-2 parts of chlorinated paraffin, and a proper amount of water. The materials such as the hollow ceramic microspheres and the hollow glass microspheres are used, so that the molding sand is fine in breathability and fluidity; meanwhile, the lightweight calcium carbonate, the glucose, the urea and the like are used, so that the molding sand is fine in high temperature collapsibility, high dry strength of sand molds, high in wet bonding power, excellent in sticking resistance and applicable to various hardening manners; drying time after CO2 hardening is shortened, and reuse rate of used sand can be increased significantly.

Description

A kind of high temperature resistant easy defeated and dispersed molding sand and preparation method thereof
Technical field
The present invention relates to a kind of casting field, relate in particular to a kind of high temperature resistant easy defeated and dispersed molding sand and preparation method thereof.
Background technology
Molding sand is to be used for the material of moulding in casting.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 the 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 the casting process coal dust firing, decompose and produce toxic gas and pollute.
Molding sand, by binding agent difference 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 caused because of the poor quality of molding sand accounts for 30~50% of the total waste product of foundry goods.Usually 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, gas permeability preferably, the molding sand hole sees through the ability of gas.5, high collapsibility, weigh 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 high temperature resistant easy defeated and dispersed molding sand and preparation method thereof, this molding sand has the high temperature collapsibility, dry strength is high, the characteristics of strong, the anti-scab of wet cohesive force.
Technical scheme of the present invention is as follows:
A kind of high temperature resistant easy defeated and dispersed molding sand is characterized in that being made by the raw material of following weight portion: quartz sand 240-280, precipitated calcium carbonate powder 50-55, ceramic microspheres 20-30, hollow glass microballoon 10-15, aluminium silicate powder 40-45, titanium dioxide 25-30, nanometer fluorite powder 35-40, crystal whisker of gypsum 30-40, expanded perlite 60-70, talcum powder 10-15, sodium metasilicate 2-4, powdered glucose 1-2, urea 1-2, chlorinated paraffin wax 1-2, water are appropriate;
The preparation method of described high temperature resistant easy defeated and dispersed molding sand, it is characterized in that comprising the following steps: quartz sand, precipitated calcium carbonate powder are put into to 450-470 ℃ of calcining furnace calcining 4-5 hour, then, take out, be ground into 250-400 order powder, then add chlorinated paraffin wax, talcum powder, suitable quantity of water, dispersed with stirring, pugging, send into calcining 4-5 hour in 1440-1480 ℃ of calcining furnace, taking-up is crushed to the 50-100 order, obtains the calcining material; Aluminium silicate powder, titanium dioxide, nanometer fluorite powder, expanded perlite, sodium metasilicate, powdered glucose, urea are mixed, grinding distribution 30-45 minute, after obtaining the 100-150 powder material, mix, then add water wet mixing 10-15 minute that is equivalent to compound weight 3-5% and get final product with calcining material, other residual components.
Beneficial effect of the present invention
Molding sand of the present invention has been used the raw materials such as ceramic microspheres, hollow glass microballoon, titanium dioxide, nanometer fluorite powder, crystal whisker of gypsum, expanded perlite, make molding sand there is good gas permeability, mobility, be combined with precipitated calcium carbonate, glucose, urea etc. simultaneously, make molding sand there is good high temperature collapsibility, the sand mold dry strength is high, wet cohesive force is strong, have excellent anti-scab ability, can adapt to multiple sclerosis mode, shortened CO 2drying time after sclerosis, can significantly improve the reclamation of return sand rate.
The specific embodiment
A kind of high temperature resistant easy defeated and dispersed molding sand, by the raw material of following weight portion (kilogram), made: quartz sand 270, precipitated calcium carbonate powder 52, ceramic microspheres 25, hollow glass microballoon 13, aluminium silicate powder 43, titanium dioxide 27, nanometer fluorite powder 36, crystal whisker of gypsum 35, expanded perlite 65, talcum powder 13, sodium metasilicate 3, powdered glucose 1.5, urea 1.5, chlorinated paraffin wax 1.5, water are appropriate;
The preparation method of described high temperature resistant easy defeated and dispersed molding sand, comprise the following steps: quartz sand, precipitated calcium carbonate powder are put into to 460 ℃ of calcining furnace calcinings 4 hours, then, take out, be ground into 330 order powder, then add chlorinated paraffin wax, talcum powder, suitable quantity of water, dispersed with stirring, pugging, send in 1460 ℃ of calcining furnaces and calcine 4.6 hours, taking-up is crushed to 70 orders, obtains the calcining material; Aluminium silicate powder, titanium dioxide, nanometer fluorite powder, expanded perlite, sodium metasilicate, powdered glucose, urea are mixed, grinding distribution 38 minutes, after obtaining 130 powder materials, with calcining material, other residual components, mix, then add the water wet mixing 13 minutes that is equivalent to compound weight 4% and get final product.
The processing performance of the molding sand that the present invention makes:
Green compression strength: 0.120Mpa, air penetrability: 127%, hot green tensile strength: 401Kpa, shatter index: 87%.

Claims (2)

1. a high temperature resistant easy defeated and dispersed molding sand is characterized in that being made by the raw material of following weight portion: quartz sand 240-280, precipitated calcium carbonate powder 50-55, ceramic microspheres 20-30, hollow glass microballoon 10-15, aluminium silicate powder 40-45, titanium dioxide 25-30, nanometer fluorite powder 35-40, crystal whisker of gypsum 30-40, expanded perlite 60-70, talcum powder 10-15, sodium metasilicate 2-4, powdered glucose 1-2, urea 1-2, chlorinated paraffin wax 1-2, water are appropriate.
2. the preparation method of high temperature resistant easy defeated and dispersed molding sand according to claim 1, it is characterized in that comprising the following steps: quartz sand, precipitated calcium carbonate powder are put into to 450-470 ℃ of calcining furnace calcining 4-5 hour, then, take out, be ground into 250-400 order powder, then add chlorinated paraffin wax, talcum powder, suitable quantity of water, dispersed with stirring, pugging, send into calcining 4-5 hour in 1440-1480 ℃ of calcining furnace, taking-up is crushed to the 50-100 order, obtains the calcining material; Aluminium silicate powder, titanium dioxide, nanometer fluorite powder, expanded perlite, sodium metasilicate, powdered glucose, urea are mixed, grinding distribution 30-45 minute, after obtaining the 100-150 powder material, mix, then add water wet mixing 10-15 minute that is equivalent to compound weight 3-5% and get final product with calcining material, other residual components.
CN201310481175.4A 2013-10-16 2013-10-16 High-temperature-resisting easy collapse molding sand and preparation method thereof Pending CN103495693A (en)

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Cited By (29)

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CN104057012A (en) * 2014-05-28 2014-09-24 安徽鑫润新型材料有限公司 High-plasticity molding sand and preparation method thereof
CN104057016A (en) * 2014-05-28 2014-09-24 安徽鑫润新型材料有限公司 High-permeability molding sand and preparation method thereof
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
CN104084521A (en) * 2014-06-13 2014-10-08 吴江市液铸液压件铸造有限公司 Additive for casting moulding sand and preparation method and application method thereof
CN104525839A (en) * 2014-12-01 2015-04-22 繁昌县恒鑫汽车零部件有限公司 Waste quartz glass heat-resisting casting molding sand and preparation method thereof
CN104841850A (en) * 2015-04-25 2015-08-19 青阳县三联铸业有限责任公司 High temperature resistant molding sand and preparation method thereof
CN104841853A (en) * 2015-05-07 2015-08-19 马鞍山市恒毅机械制造有限公司 Fast-radiating easy-to-collapse casting sand and preparation method thereof
CN105081201A (en) * 2015-08-14 2015-11-25 郭伟 High-lubricity modified composite sodium silicate-bonded sand for steel casting and preparation method of high-lubricity modified composite sodium silicate-bonded sand
CN105108036A (en) * 2015-08-11 2015-12-02 陈传松 High-permeability light modified composite water glass sand for steel casting and preparation method of high-permeability light modified composite water glass sand
CN105108035A (en) * 2015-08-11 2015-12-02 陈传松 Low-thermal-expansion high-strength modified composite sodium silicate-bonded sand for steel casting and preparation method of modified composite sodium silicate-bonded sand
CN105108034A (en) * 2015-08-11 2015-12-02 陈传松 Easy-to-collapse magnetic modified composite sodium silicate sand for steel casting and preparation method for easy-to-collapse magnetic modified composite sodium silicate
CN105108037A (en) * 2015-08-14 2015-12-02 郭伟 High-fluidity modified composite water glass sand for steel castings and preparation method thereof
CN105108041A (en) * 2015-08-11 2015-12-02 陈传松 High strength modified compound sodium silicate sand containing graphite fluoride for steel casting and preparation method thereof
CN105108038A (en) * 2015-08-14 2015-12-02 郭伟 High-collapsibility hydrotalcite modified composite sodium silicate-bonded sand for steel casting and preparation method of composite sodium silicate-bonded sand
CN105108042A (en) * 2015-08-11 2015-12-02 陈传松 High-thermal-conductivity easily-demolded modified composite water-glass sand for steel castings and preparation method thereof
CN105108039A (en) * 2015-08-14 2015-12-02 郭伟 High-temperature anti-sticking modified composite water glass sand for steel castings and preparation method thereof
CN105108040A (en) * 2015-08-14 2015-12-02 郭伟 Low-hot-shrinkage-rate modified compound sodium silicate sand for steel castings and preparation method thereof
CN105903887A (en) * 2016-05-26 2016-08-31 合肥市田源精铸有限公司 High-performance green sand
CN105903890A (en) * 2016-05-26 2016-08-31 合肥市田源精铸有限公司 Easily-collapsing green sand
CN106001390A (en) * 2016-07-29 2016-10-12 无锡市三峰仪器设备有限公司 Casting sand for resisting thermal stress damage
CN106040961A (en) * 2016-06-03 2016-10-26 苏州福德龙水产养殖有限公司 High-strength and high-temperature-resistance 3D printing clay green sand material 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
CN106270366A (en) * 2016-08-26 2017-01-04 蚌埠市北晨微型机床厂 A kind of high temperature resistant moulding sand for casting
CN106590690A (en) * 2016-12-30 2017-04-26 深圳市泽青源科技开发服务有限公司 Fungus-based biomass fireproof material with bagasse as main material and preparation method thereof
CN107282864A (en) * 2017-08-15 2017-10-24 合肥正明机械有限公司 A kind of molding sand of cast nonferrous alloy
CN107649642A (en) * 2017-10-27 2018-02-02 湖州正德轻工机械有限公司 A kind of inexpensive molding sand
CN107671233A (en) * 2017-09-30 2018-02-09 江苏闽江矿业有限公司 A kind of casting molding sand
CN107671234A (en) * 2017-09-30 2018-02-09 江苏闽江矿业有限公司 A kind of moulding sand for casting formula
CN109365741A (en) * 2018-12-20 2019-02-22 青岛连山铸造有限公司 A kind of preparation method casting coupler body molding sand

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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
CN104057016A (en) * 2014-05-28 2014-09-24 安徽鑫润新型材料有限公司 High-permeability molding sand and preparation method thereof
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
CN104057012A (en) * 2014-05-28 2014-09-24 安徽鑫润新型材料有限公司 High-plasticity molding sand and preparation method thereof
CN104084521A (en) * 2014-06-13 2014-10-08 吴江市液铸液压件铸造有限公司 Additive for casting moulding sand and preparation method and application method thereof
CN104084521B (en) * 2014-06-13 2017-01-11 吴江市液铸液压件铸造有限公司 Additive for casting moulding sand and preparation method and application method thereof
CN104525839A (en) * 2014-12-01 2015-04-22 繁昌县恒鑫汽车零部件有限公司 Waste quartz glass heat-resisting casting molding sand and preparation method thereof
CN104841850A (en) * 2015-04-25 2015-08-19 青阳县三联铸业有限责任公司 High temperature resistant molding sand and preparation method thereof
CN104841853A (en) * 2015-05-07 2015-08-19 马鞍山市恒毅机械制造有限公司 Fast-radiating easy-to-collapse casting sand and preparation method thereof
CN105108036A (en) * 2015-08-11 2015-12-02 陈传松 High-permeability light modified composite water glass sand for steel casting and preparation method of high-permeability light modified composite water glass sand
CN105108035A (en) * 2015-08-11 2015-12-02 陈传松 Low-thermal-expansion high-strength modified composite sodium silicate-bonded sand for steel casting and preparation method of modified composite sodium silicate-bonded sand
CN105108041A (en) * 2015-08-11 2015-12-02 陈传松 High strength modified compound sodium silicate sand containing graphite fluoride for steel casting and preparation method thereof
CN105108042A (en) * 2015-08-11 2015-12-02 陈传松 High-thermal-conductivity easily-demolded modified composite water-glass sand for steel castings and preparation method thereof
CN105108034A (en) * 2015-08-11 2015-12-02 陈传松 Easy-to-collapse magnetic modified composite sodium silicate sand for steel casting and preparation method for easy-to-collapse magnetic modified composite sodium silicate
CN105081201A (en) * 2015-08-14 2015-11-25 郭伟 High-lubricity modified composite sodium silicate-bonded sand for steel casting and preparation method of high-lubricity modified composite sodium silicate-bonded sand
CN105108038A (en) * 2015-08-14 2015-12-02 郭伟 High-collapsibility hydrotalcite modified composite sodium silicate-bonded sand for steel casting and preparation method of composite sodium silicate-bonded sand
CN105108039A (en) * 2015-08-14 2015-12-02 郭伟 High-temperature anti-sticking modified composite water glass sand for steel castings and preparation method thereof
CN105108037A (en) * 2015-08-14 2015-12-02 郭伟 High-fluidity modified composite water glass sand for steel castings and preparation method thereof
CN105108040A (en) * 2015-08-14 2015-12-02 郭伟 Low-hot-shrinkage-rate modified compound sodium silicate sand for steel castings and preparation method thereof
CN105903890A (en) * 2016-05-26 2016-08-31 合肥市田源精铸有限公司 Easily-collapsing green sand
CN105903887A (en) * 2016-05-26 2016-08-31 合肥市田源精铸有限公司 High-performance green sand
CN106040961A (en) * 2016-06-03 2016-10-26 苏州福德龙水产养殖有限公司 High-strength and high-temperature-resistance 3D printing clay green sand material and preparation method thereof
CN108530102A (en) * 2016-06-03 2018-09-14 苏州福德龙水产养殖有限公司 A kind of high-strength high temperature-resistant 3D printing clay green-sand material and preparation method thereof
CN106001390A (en) * 2016-07-29 2016-10-12 无锡市三峰仪器设备有限公司 Casting sand for resisting thermal stress damage
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
CN106270366A (en) * 2016-08-26 2017-01-04 蚌埠市北晨微型机床厂 A kind of high temperature resistant moulding sand for casting
CN106590690A (en) * 2016-12-30 2017-04-26 深圳市泽青源科技开发服务有限公司 Fungus-based biomass fireproof material with bagasse as main material and preparation method thereof
CN107282864A (en) * 2017-08-15 2017-10-24 合肥正明机械有限公司 A kind of molding sand of cast nonferrous alloy
CN107671233A (en) * 2017-09-30 2018-02-09 江苏闽江矿业有限公司 A kind of casting molding sand
CN107671234A (en) * 2017-09-30 2018-02-09 江苏闽江矿业有限公司 A kind of moulding sand for casting formula
CN107649642A (en) * 2017-10-27 2018-02-02 湖州正德轻工机械有限公司 A kind of inexpensive molding sand
CN109365741A (en) * 2018-12-20 2019-02-22 青岛连山铸造有限公司 A kind of preparation method casting coupler body molding sand

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Application publication date: 20140108