CN102069140B - Novel film coating sand - Google Patents

Novel film coating sand Download PDF

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Publication number
CN102069140B
CN102069140B CN2011100390865A CN201110039086A CN102069140B CN 102069140 B CN102069140 B CN 102069140B CN 2011100390865 A CN2011100390865 A CN 2011100390865A CN 201110039086 A CN201110039086 A CN 201110039086A CN 102069140 B CN102069140 B CN 102069140B
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Prior art keywords
sand
percent
film coating
iron
coating sand
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CN102069140A (en
Inventor
田中青
张启奎
杨双杰
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XIXIA ZHONGDE AUTOMOBILE PARTS CO Ltd
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XIXIA ZHONGDE AUTOMOBILE PARTS CO Ltd
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Abstract

The invention discloses film coating sand, which comprises the following components in percentage by weight: 2.0 to 2.1 percent of resin, 0.03 to 0.05 percent of coupling agent, 0.2 to 0.32 percent of urotropine, 0.1 to 0.15 percent of calcium stearate, 0.08 to 0.1 percent of iron oxide red, 6 to 8 percent of iron sand and the balance of silica sand. Compared with the conventional film coating sand, the film coating sand has the performance of delaying the gas forming velocity by 3 to 5 seconds and inhibiting the generation of nitrogen besides the performance of the conventional film coating sand, can effectively reduce nitrogen pores generated on castings, and greatly improves the yield of high-nickel austenitic ductile iron castings.

Description

A kind of precoated sand
Technical field
The present invention relates to the making of precoated sand, especially make the low anti-nitrogen precoated sand of getting angry.
Background technology
Along with the progress of science and technology, the development of society; The consumer is increasingly high to the quality requirement of product, and corresponding high-end product can not meet the demands with common raw material, falls behind gradually, eliminates; And then through the prescription, technology adjustment improve raw-material serviceability; Be used to produce high-end product, this material of high-nickel austenite magnesium iron is because the particularity of its material (flowability is poor, setting temperature is high, be prone to produce nitrogen pore etc.) uses the foundry goods of conventional this kind of precoated sand making core production material can cause a lot of insurmountable defectives; Therefore just must improve the performance of precoated sand, it is satisfied the demands.
Make core with precoated sand, have the production efficiency height, characteristics such as coremaking is convenient, core up time length; Arriving widely in casting used, but its weak point is also arranged, and be bigger such as its gas forming amount; Be prone to produce nitrogen pore; When especially core was used to produce the high-nickel austenite magnesium iron, pin hole, nitrogen pore defective were a lot, adjust other process meanses and also produce little effect.
Summary of the invention
The present invention is intended to overcome the deficiency of above prior art, provides a kind of foundry goods that can effectively prevent to produce the novel precoated sand of nitrogen pore.
Technical solution problem of the present invention adopts following technical scheme:
A kind of novel precoated sand, each component proportioning by weight is following: resin 2.1%, coupling agent 0.05%, methenamine 0.25%, calcium stearate 0.126%, iron oxide red 0.08%, iron sand 8%, surplus are silica sand.
Beneficial effect of the present invention is following: compare with conventional precoated sand; This precoated sand also has the raising rate of delaying 3-5S except that the performance with conventional precoated sand, suppress the performance of nitrogen gas generation; Can effectively reduce foundry goods and produce nitrogen pore, improve the yield rate of high-nickel austenite iron casting greatly.
The specific embodiment
Embodiment 1
A kind of novel precoated sand, each component proportioning by weight is following:
Resin 2.1%, coupling agent 0.05%, methenamine 0.25%, calcium stearate 0.126%, iron oxide red 0.08%, iron sand 8%.
Embodiment 2
A kind of novel precoated sand, each component proportioning by weight is following:
Resin 2.0%, coupling agent 0.03%, methenamine 0.2%, calcium stearate 0.15%, iron oxide red 0.1%, iron sand 7%, surplus are silica sand.
Embodiment 3
A kind of novel precoated sand, each component proportioning by weight is following:
Resin 2.0%, coupling agent 0.04%, methenamine 0.3%, calcium stearate 0.13%, iron oxide red 0.09%, iron sand 6%, surplus are silica sand.

Claims (1)

1. a precoated sand is characterized in that, each component proportioning by weight is following: resin 2.1%, coupling agent 0.05%, methenamine 0.25%, calcium stearate 0.126%, iron oxide red 0.08%, iron sand 8%, surplus are silica sand.
CN2011100390865A 2011-02-16 2011-02-16 Novel film coating sand Active CN102069140B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100390865A CN102069140B (en) 2011-02-16 2011-02-16 Novel film coating sand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100390865A CN102069140B (en) 2011-02-16 2011-02-16 Novel film coating sand

Publications (2)

Publication Number Publication Date
CN102069140A CN102069140A (en) 2011-05-25
CN102069140B true CN102069140B (en) 2012-03-28

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Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102343415B (en) * 2011-09-29 2013-02-20 南昌航空大学 Casting coated sand suitable for selective laser sintering forming and manufacturing method thereof
CN102503201B (en) * 2011-10-21 2013-04-24 李国辉 Pre-coated sand, preparation method thereof and composite water permeable brick
CN102688977B (en) * 2012-06-12 2014-09-03 西峡县众德汽车部件有限公司 High-strength core-preparing precoated sand and preparation process thereof
CN103567389A (en) * 2012-07-30 2014-02-12 大连远景铸造有限公司 Technology for manufacturing mold core by using steel molding sand
CN103272996A (en) * 2013-04-16 2013-09-04 繁昌县恒鑫汽车零部件有限公司 Sand sticking-resistant precoated sand
CN103272998A (en) * 2013-04-16 2013-09-04 繁昌县恒鑫汽车零部件有限公司 Low-expansion precoated sand
CN103231008A (en) * 2013-04-16 2013-08-07 繁昌县恒鑫汽车零部件有限公司 High temperature resistance precoated sand
CN103231007A (en) * 2013-04-16 2013-08-07 繁昌县恒鑫汽车零部件有限公司 Moisture absorption resistance iron cast precoated sand
CN103272997A (en) * 2013-04-16 2013-09-04 繁昌县恒鑫汽车零部件有限公司 Precoated sand for iron casting
CN103231010A (en) * 2013-04-16 2013-08-07 繁昌县恒鑫汽车零部件有限公司 Easy-collapsibility type precoated sand
CN103567362A (en) * 2013-10-11 2014-02-12 铜陵市经纬流体科技有限公司 Pre-coated sand with high strength and low gas evolution rate and preparation method thereof
CN104209450B (en) * 2014-09-04 2016-06-15 西峡县西泵特种铸造有限公司 A kind of extraordinary precoated sand of high alloy material foundry goods
CN104668443A (en) * 2015-02-04 2015-06-03 繁昌县金科机电科技有限公司 Casting precoated sand added with titanium dioxide and preparation method of casting precoated sand
CN105328113A (en) * 2015-11-02 2016-02-17 沈阳金安铸造材料有限公司 Pre-coated sand used for casting and production method of pre-coated sand
CN105750476B (en) * 2016-04-28 2018-12-07 庆铃汽车(集团)有限公司 A kind of extraordinary precoated sand of anti-aliquation and preparation method thereof
CN107755624A (en) * 2016-08-23 2018-03-06 抚顺市盛鑫覆膜砂制造有限公司 A kind of precoated sand
CN106040964A (en) * 2016-08-23 2016-10-26 蚌埠精科机床制造有限公司 Preparation method of clay resin self-hardening machine-tool foundry sand
CN107913976A (en) * 2016-10-09 2018-04-17 抚顺市鑫盛挖掘机配件制造有限公司 Precoated sand shell production various specifications crane, the technique of crawler of excavator plate
CN106563765A (en) * 2016-11-03 2017-04-19 重庆长江造型材料(集团)股份有限公司 Low-ammonia environment-friendly resin coated sand
CN106563766A (en) * 2016-11-03 2017-04-19 重庆长江造型材料(集团)股份有限公司 Process for preparing low-ammonia environmentally-friendly resin precoated sand
CN107096868B (en) * 2017-05-03 2019-03-26 西安工程大学 A kind of high fire resistance precoated sand of highly-breathable and preparation method thereof
CN107096874B (en) * 2017-05-03 2019-06-21 西安工程大学 A kind of highly-breathable alcohol radical lost foam paint and preparation method thereof
CN108127074A (en) * 2017-12-22 2018-06-08 常州市长江铸工材料有限公司 Low flue gas precoated sand of a kind of cracking resistance and preparation method thereof
CN108213324B (en) * 2018-02-11 2020-07-03 常州中车汽车零部件有限公司 High-precision casting precoated sand and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1083752A (en) * 1993-08-31 1994-03-16 秦升益 A kind of compound technology for filming sand
CN1526491A (en) * 2003-03-05 2004-09-08 罗丙太 Composite precoated sand and its prepn process
CN1175947C (en) * 2000-06-13 2004-11-17 秦升益 Preparation process of heat resisting film-coating sand
CN101927318A (en) * 2010-09-03 2010-12-29 吴江市液铸液压件铸造有限公司 High strength precoated sand
CN101934346A (en) * 2010-09-02 2011-01-05 吴江市液铸液压件铸造有限公司 Pre-coated sand

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1083752A (en) * 1993-08-31 1994-03-16 秦升益 A kind of compound technology for filming sand
CN1175947C (en) * 2000-06-13 2004-11-17 秦升益 Preparation process of heat resisting film-coating sand
CN1526491A (en) * 2003-03-05 2004-09-08 罗丙太 Composite precoated sand and its prepn process
CN101934346A (en) * 2010-09-02 2011-01-05 吴江市液铸液压件铸造有限公司 Pre-coated sand
CN101927318A (en) * 2010-09-03 2010-12-29 吴江市液铸液压件铸造有限公司 High strength precoated sand

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