CN105618667B - A kind of fire resisting casting sand - Google Patents

A kind of fire resisting casting sand Download PDF

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Publication number
CN105618667B
CN105618667B CN201511022200.8A CN201511022200A CN105618667B CN 105618667 B CN105618667 B CN 105618667B CN 201511022200 A CN201511022200 A CN 201511022200A CN 105618667 B CN105618667 B CN 105618667B
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sand
parts
mesh
content
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CN105618667A (en
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陈衍玲
刘全英
韩哲
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Shaoguan Sheng Fa Nonferrous Pioneer Metals Corp
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Shaoguan Sheng Fa Nonferrous Pioneer Metals Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C1/00Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds

Abstract

The invention discloses a kind of fire resisting casting sands, including roughing sand, function ingredients, and the roughing sand includes fresh sand and reclaimed sand, fresh sand includes 100-110 parts of silica sand, 6-10 parts of zircon sand, 10-15 parts of forsterite sand by weight, 5-7 parts of emergy, 3-5 parts of grog refractory, 3-5 parts of carbon sand;The function ingredients are the combustible containing carbon fiber, diatomite or attapulgite, production cost of the present invention is low, improve structural stability, thermal conductivity is good, and refractoriness height and anti acid alkali performance are good, increases gas permeability under the premise of guaranteeing sand bond, bleb defect is reduced, yield rate is increased.

Description

A kind of fire resisting casting sand
Technical field
The invention belongs to casting technology fields, more particularly, to a kind of fire resisting casting sand.
Background technique
In casting field, in broad terms, all materials for being used to manufacture casting mold (including sand core, coating etc.) are referred to as making Profile material.Casting mold used in Foundry Production has sand mold, metal mold, ceramic mould, gypsum mould, graphite mould etc., wherein it is most universal and Sand mold largely is used, worldwide, the 60%- of various casting mold production casting outputs is accounted for using the casting that sand mold produces 80%, 21 century calls " Green foundry ", and protection environment realizes that sustainable development is our fundamental state policy, Modeling Material pair The environmental protection of Foundry Works, green, cleanly production play an important role, and in sand casting and lost foam casting production, will arrange The discarded old sand of amplification quantity must bring huge pollution if not can be carried out regeneration treatment and recycling to natural environment It destroys, therefore develops a kind of environmentally friendly, of low pollution, the high Modeling Material of fire resistance has important meaning for current status Justice.
Summary of the invention
Based on the above technical problem, the invention discloses a kind of fire resisting casting sands, can efficiently obtain casting sand type, Refractoriness is high, and uses environment-friendly materials, protects environment and resource.
The complete technical solution of the present invention includes:
A kind of fire resisting casting sand, including roughing sand, the first function ingredients, the second function ingredients;
The roughing sand includes fresh sand and reclaimed sand, and the fresh sand and reclaimed sand mass ratio are (65-80): (35-20);
The fresh sand includes 100-110 parts of silica sand by weight, and 6-10 parts of zircon sand, 10-15 parts of forsterite sand, just Beautiful sand 5-7 parts, 3-5 parts of grog refractory, 3-5 parts of carbon sand;
Dioxide-containing silica is 90%-95% in the silica sand, and for aluminium oxide less than 5%, surplus is inevitably miscellaneous Matter, granularity are 140-180 mesh, and strict density is 1.75g/cm3 or more, average fineness 52-55;
Zirconia content is greater than 70% in zircon sand, and silica content is less than 28%, and titanium oxide content is less than 0.3%, oxidation Iron content is less than 0.12%, and for alumina content less than 0.2%, granularity is 240-280 mesh;
Content of magnesia is 48-55% in the olivine sand, and less than 45%, iron oxide content is less than silica content 8%, granularity is 240-280 mesh,
Alumina content is 99-99.5% in the emergy, and granularity is 140-180 mesh;
The grog refractory is the bauxite that mass ratio is 2:1 and gangue mixture, wherein aluminium oxide in bauxite Content is 75%, and refractoriness is greater than 1850 DEG C,
The carbon sand is graphite or coke, granularity are 160-200 mesh,
The regeneration fineness of sand is 180-240 mesh.
First function ingredients are the combustible containing carbon fiber, thin sawdust, agricultural crop straw, thin sawdust granularity For 160-200 mesh, crop branch fiber diameter is 4-6mm;
One to two kind of the second function ingredients diatomite or attapulgite, granularity are 80-120 mesh, account for roughing sand The 3-5% of gross mass.
The present invention compared with the prior art, using the silica sand of appropriate level as roughing sand principal component, reduces production cost, and Using partial size small zircon sand and olivine sand, the coefficient of expansion is small, improves structural stability, and thermal conductivity is good, and refractoriness is high, and Olivine sand also improves the anti acid alkali performance of molding sand, and grog refractory is loose, improves refractoriness, and handle convenient for knockout, adopts With reclaimed sand, be conducive to environmental protection and recycle, and fine grain reclaimed sand is conducive to improve mold quality, at the same using diatomite or The porous materials such as attapulgite reduce the usage amount of refractory material as molding sand material, make casting mold lighting, not only improve ring It protects, and using reasonable proportion, increases gas permeability under the premise of guaranteeing sand bond, reduce bleb defect, increase Yield rate is added.
Specific embodiment
The present invention will be further described With reference to embodiment.
A kind of fire resisting casting sand, including roughing sand, the first function ingredients, the second function ingredients, binder;
The roughing sand includes fresh sand and reclaimed sand, and the fresh sand and reclaimed sand mass ratio are (65-80): (35-20);
The fresh sand includes 100-110 parts of silica sand by weight, and 6-10 parts of zircon sand, 10-15 parts of forsterite sand, just Beautiful sand 5-7 parts, 3-5 parts of grog refractory, 3-5 parts of carbon sand;
Dioxide-containing silica is 90%-95% in the silica sand, and for aluminium oxide less than 5%, surplus is inevitably miscellaneous Matter, granularity are 140-180 mesh, and strict density is 1.75g/cm3 or more, average fineness 52-55;
Zirconia content is greater than 70% in zircon sand, and silica content is less than 28%, and titanium oxide content is less than 0.3%, oxidation Iron content is less than 0.12%, and for alumina content less than 0.2%, granularity is 240-280 mesh;
Content of magnesia is 48-55% in the olivine sand, and less than 45%, iron oxide content is less than silica content 8%, granularity is 240-280 mesh,
Alumina content is 99-99.5% in the emergy, and granularity is 140-180 mesh;
The grog refractory is the bauxite that mass ratio is 2:1 and gangue mixture, wherein aluminium oxide in bauxite Content is 75%, and refractoriness is greater than 1850 DEG C,
The carbon sand is graphite or coke, granularity are 160-200 mesh,
The regeneration fineness of sand is 180-240 mesh.
First function ingredients are the combustible containing carbon fiber, thin sawdust, agricultural crop straw, thin sawdust granularity For 160-200 mesh, crop branch fiber diameter is 4-6mm;
One to two kind of the second function ingredients diatomite or attapulgite, granularity are 80-120 mesh, account for roughing sand The 3-5% of gross mass,
The binder is the mixture of phenolic resin, vegetable oil, tower oil, polyvinyl alcohol, and volume ratio is (60-65): (4-6): (2:-3): (10-15).

Claims (1)

1. a kind of fire resisting casting sand, including roughing sand, the first function ingredients, the second function ingredients;
The roughing sand includes fresh sand and reclaimed sand, and the fresh sand and reclaimed sand mass ratio are (65-80): (35-20);
The fresh sand includes 100-110 parts of silica sand by weight, and 6-10 parts of zircon sand, 10-15 parts of forsterite sand, emergy 5-7 parts, 3-5 parts of grog refractory, 3-5 parts of carbon sand;
Dioxide-containing silica is 90%-95% in the silica sand, and for aluminium oxide less than 5%, surplus is inevitable impurity, grain Degree is 140-180 mesh, and strict density is 1.75g/cm3 or more, average fineness 52-55;
Zirconia content is greater than 70% in zircon sand, and silica content is less than 28%, and less than 0.3%, iron oxide contains titanium oxide content Amount is less than 0.12%, and for alumina content less than 0.2%, granularity is 240-280 mesh;
Content of magnesia is 48-55% in the forsterite sand, and less than 45%, iron oxide content is less than silica content 8%, granularity is 240-280 mesh,
Alumina content is 99-99.5% in the emergy, and granularity is 140-180 mesh;
The grog refractory is the bauxite that mass ratio is 2:1 and gangue mixture, wherein alumina content in bauxite It is 75%, refractoriness is greater than 1850 DEG C,
The carbon sand is graphite or coke, granularity are 160-200 mesh,
The regeneration fineness of sand is 180-240 mesh,
First function ingredients are the combustible containing carbon fiber;
Second function ingredients are one to two kind of diatomite or attapulgite, and granularity is 80-120 mesh, and it is total to account for roughing sand The 3-5% of quality, the combustible containing carbon fiber are at least one of thin sawdust and agricultural crop straw, described thin Sawdust granularity is 160-200 mesh, and the crop branch fiber diameter is 4-6mm.
CN201511022200.8A 2015-12-30 2015-12-30 A kind of fire resisting casting sand Active CN105618667B (en)

Priority Applications (1)

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Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201511022200.8A CN105618667B (en) 2015-12-30 2015-12-30 A kind of fire resisting casting sand
PCT/CN2016/107873 WO2017114074A1 (en) 2015-12-30 2016-11-30 Moulding sand for fire-resistant casting

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CN105618667A CN105618667A (en) 2016-06-01
CN105618667B true CN105618667B (en) 2018-12-14

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WO (1) WO2017114074A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105618667B (en) * 2015-12-30 2018-12-14 韶关市晟发有色金属有限公司 A kind of fire resisting casting sand
CN105436411B (en) * 2015-12-30 2018-08-17 青岛立准金属有限公司 A kind of high ventilative lost-foam casting method
CN105537516B (en) * 2015-12-30 2018-08-24 泊头市亚奇铸业有限公司 A kind of diesel engine casing sand mould casting method
CN105397020A (en) * 2015-12-30 2016-03-16 青岛博泰美联化工技术有限公司 Air permeable casting sand
CN105583354A (en) * 2015-12-30 2016-05-18 青岛博泰美联化工技术有限公司 Casting method for cast iron sand mold
CN105618668A (en) * 2015-12-30 2016-06-01 青岛博泰美联化工技术有限公司 High-strength foundry sand
CN105583365A (en) * 2015-12-30 2016-05-18 青岛博泰美联化工技术有限公司 Evaporative pattern casting method for diesel engine casing
CN105499497B (en) * 2015-12-30 2018-07-27 繁峙县中兴华徳联铸有限公司 A kind of V methods casting technique
CN105458158A (en) * 2015-12-30 2016-04-06 青岛博泰美联化工技术有限公司 Environment-friendly foundry molding sand composition
CN105537502A (en) * 2015-12-30 2016-05-04 青岛博泰美联化工技术有限公司 Sand casting method of diesel engine component
CN105880463A (en) * 2016-06-20 2016-08-24 安徽宜安精密机械零部件有限公司 Sand for precision casting and preparation process of sand for precision casting
CN106111883A (en) * 2016-08-18 2016-11-16 娄土岭 A kind of multi-function casting moulding sand and manufacture method thereof
CN109732037B (en) * 2019-03-04 2020-11-13 苏州轻金三维科技有限公司 Molding sand for three-dimensional printing and preparation method thereof

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JPH04147743A (en) * 1990-10-08 1992-05-21 Kobe Rikagaku Kogyo Kk Manufacture of mold or core
CN101293271A (en) * 2007-04-24 2008-10-29 沈阳汇亚通铸造材料有限责任公司 Method for making core with aeration ossification
CN102366811A (en) * 2011-10-10 2012-03-07 辛培兴 Preparation method of molding sand for gray iron casting
CN103521684A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Corundum-mullite modified molding sand and preparation method thereof
CN104999031A (en) * 2015-08-12 2015-10-28 宁波高新区多维时空科技有限公司 Rapid manufacturing method for sprayed and cured molding sand

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CN103495692A (en) * 2013-10-16 2014-01-08 合肥市田源精铸有限公司 Mud core moulding sand for casting and preparation method thereof
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CN105583365A (en) * 2015-12-30 2016-05-18 青岛博泰美联化工技术有限公司 Evaporative pattern casting method for diesel engine casing
CN105618668A (en) * 2015-12-30 2016-06-01 青岛博泰美联化工技术有限公司 High-strength foundry sand
CN105583354A (en) * 2015-12-30 2016-05-18 青岛博泰美联化工技术有限公司 Casting method for cast iron sand mold
CN105458158A (en) * 2015-12-30 2016-04-06 青岛博泰美联化工技术有限公司 Environment-friendly foundry molding sand composition
CN105397020A (en) * 2015-12-30 2016-03-16 青岛博泰美联化工技术有限公司 Air permeable casting sand
CN105537516B (en) * 2015-12-30 2018-08-24 泊头市亚奇铸业有限公司 A kind of diesel engine casing sand mould casting method
CN105436411B (en) * 2015-12-30 2018-08-17 青岛立准金属有限公司 A kind of high ventilative lost-foam casting method
CN105499497B (en) * 2015-12-30 2018-07-27 繁峙县中兴华徳联铸有限公司 A kind of V methods casting technique
CN105537502A (en) * 2015-12-30 2016-05-04 青岛博泰美联化工技术有限公司 Sand casting method of diesel engine component
CN105618667B (en) * 2015-12-30 2018-12-14 韶关市晟发有色金属有限公司 A kind of fire resisting casting sand

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JPH04147743A (en) * 1990-10-08 1992-05-21 Kobe Rikagaku Kogyo Kk Manufacture of mold or core
CN101293271A (en) * 2007-04-24 2008-10-29 沈阳汇亚通铸造材料有限责任公司 Method for making core with aeration ossification
CN102366811A (en) * 2011-10-10 2012-03-07 辛培兴 Preparation method of molding sand for gray iron casting
CN103521684A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Corundum-mullite modified molding sand and preparation method thereof
CN104999031A (en) * 2015-08-12 2015-10-28 宁波高新区多维时空科技有限公司 Rapid manufacturing method for sprayed and cured molding sand

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