CN103495697A - Anti-adhesive saw-dust molding sand and preparation method thereof - Google Patents

Anti-adhesive saw-dust molding sand and preparation method thereof Download PDF

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Publication number
CN103495697A
CN103495697A CN201310481205.1A CN201310481205A CN103495697A CN 103495697 A CN103495697 A CN 103495697A CN 201310481205 A CN201310481205 A CN 201310481205A CN 103495697 A CN103495697 A CN 103495697A
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China
Prior art keywords
parts
molding sand
soil
saw
sand
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Pending
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CN201310481205.1A
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Chinese (zh)
Inventor
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 CN201310481205.1A priority Critical patent/CN103495697A/en
Publication of CN103495697A publication Critical patent/CN103495697A/en
Pending legal-status Critical Current

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Abstract

An anti-adhesive saw-dust molding sand is characterized in that the anti-adhesive saw-dust molding sand is prepared by, by weight, 200-220 parts of quartz sand, 30-35 parts of bentonite, 40-45 parts of Datong soil, 30-35 parts of saw dust, 10-15 parts of rice husk meal, 30-35 parts of fangzi soil, 18-25 parts of Longyan soil, 15-20 parts of corn flour, 5-6 parts of silane coupling agents KH550, 2-3 parts of ammonium dihydrogen phosphate, 3-4 parts of cotton seed oil and the certain amount of water. By using the quartz sand and the bentonite and the like to calcinate, calcinate at high temperature and combine and dispersing and grinding the fangzi soil and the like, the molding sand has excellent smoothness, cohesiveness, toughness and plasticity, and cohesiveness of the molding sand is improved by grinding the saw dust, the rice husk meal and the silane coupling agents KH550. By using the saw dust, the corn flour and the like, high-temperature collapsibility is improved, and the molding sand is pollution-free and low in cost. Besides, the molding sand is anti-adhesive to cast pieces, causes few peeling of the cast pieces and is good in economic benefits.

Description

Antiseized molding sand of a kind of saw processing wood chip and preparation method thereof
Technical field
The present invention relates to a kind of casting field, relate in particular to antiseized molding sand of a kind of saw processing wood chip 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 antiseized molding sand of a kind of saw processing wood chip and preparation method thereof, this molding sand has the characteristics of high gas permeability, collapsibility, antistick characteristic.
Technical scheme of the present invention is as follows:
The antiseized molding sand of a kind of saw processing wood chip is characterized in that being made by the raw material of following weight portion: quartz sand 200-220, bentonite 30-35, the soil 40-45 of Datong District, saw processing wood chip 30-35, rice husk meal 10-15, prescription soil 30-35, Longyan clay 18-25, corn flour 15-20, Silane coupling agent KH550 5-6, ammonium dihydrogen phosphate (ADP) 2-3, cottonseed oil 3-4, water are appropriate;
The preparation method of the antiseized molding sand of described saw processing wood chip, it is characterized in that comprising the following steps: quartz sand, bentonite, Datong District's soil are mixed and puts into 530-570 ℃ of calcining furnace calcining 3-4 hour, then, take out, be ground into 200-400 order powder, then add prescription soil, Longyan clay, ammonium dihydrogen phosphate (ADP), cottonseed oil, suitable quantity of water, dispersed with stirring, pugging, send into calcining 4-5 hour in 1420-1440 ℃ of calcining furnace, taking-up is crushed to the 50-100 order, obtains the calcining material; To saw processing wood chip, rice husk meal, Silane coupling agent KH550 mixing, grind 20-30 minute, then mix with other residual components, and add water wet mixing 10-15 minute that is equivalent to compound weight 3-5% and get final product.
Beneficial effect of the present invention
The present invention has used quartz sand, bentonite etc., add the dispersion grindings such as prescription soil through calcining, high-temperature calcination, combination, make molding sand there is excellent smoothness, caking property, toughness, plasticity, use saw processing wood chip, rice husk meal, Silane coupling agent KH550 to grind simultaneously, increased the caking property of molding sand; Saw processing wood chip, corn flour etc. by use, increased the high temperature collapsibility, free from environmental pollution, cost is low; The non-caked foundry goods of molding sand of the present invention, the sand buckle phenomenon is few, has improved economic benefit.
The specific embodiment
The antiseized molding sand of a kind of saw processing wood chip, by the raw material of following weight portion (kilogram), made: it is appropriate that quartz sand 210, bentonite 33, Datong District's soil 43, saw are processed wood chip 33, rice husk meal 13, prescription soil 33, Longyan clay 22, corn flour 18, Silane coupling agent KH550 5, ammonium dihydrogen phosphate (ADP) 2.5, cottonseed oil 3.5, water;
The preparation method of the antiseized molding sand of described saw processing wood chip, comprise the following steps: quartz sand, bentonite, Datong District's soil are mixed and puts into 550 ℃ of calcining furnace calcinings 3.5 hours, then, take out, be ground into 300 order powder, then add prescription soil, Longyan clay, ammonium dihydrogen phosphate (ADP), cottonseed oil, suitable quantity of water, dispersed with stirring, pugging, send in 1430 ℃ of calcining furnaces and calcine 4.5 hours, taking-up is crushed to 70 orders, obtains the calcining material; To saw processing wood chip, rice husk meal, Silane coupling agent KH550 mixing, grind 25 minutes, then mix with other residual components, and add the water wet mixing 13 minutes that is equivalent to compound weight 5% and get final product.
The processing performance of the molding sand that the present invention makes:
Green compression strength: 0.144Mpa, air penetrability: 122%, hot green tensile strength: 458Kpa, shatter index: 89%.

Claims (2)

1. the antiseized molding sand of saw processing wood chip is characterized in that being made by the raw material of following weight portion: quartz sand 200-220, bentonite 30-35, the soil 40-45 of Datong District, saw processing wood chip 30-35, rice husk meal 10-15, prescription soil 30-35, Longyan clay 18-25, corn flour 15-20, Silane coupling agent KH550 5-6, ammonium dihydrogen phosphate (ADP) 2-3, cottonseed oil 3-4, water are appropriate.
2. the preparation method that saw is processed the antiseized molding sand of wood chip according to claim 1, it is characterized in that comprising the following steps: quartz sand, bentonite, Datong District's soil are mixed and puts into 530-570 ℃ of calcining furnace calcining 3-4 hour, then, take out, be ground into 200-400 order powder, then add prescription soil, Longyan clay, ammonium dihydrogen phosphate (ADP), cottonseed oil, suitable quantity of water, dispersed with stirring, pugging, send into calcining 4-5 hour in 1420-1440 ℃ of calcining furnace, taking-up is crushed to the 50-100 order, obtains the calcining material; To saw processing wood chip, rice husk meal, Silane coupling agent KH550 mixing, grind 20-30 minute, then mix with other residual components, and add water wet mixing 10-15 minute that is equivalent to compound weight 3-5% and get final product.
CN201310481205.1A 2013-10-16 2013-10-16 Anti-adhesive saw-dust molding sand and preparation method thereof Pending CN103495697A (en)

Priority Applications (1)

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CN201310481205.1A CN103495697A (en) 2013-10-16 2013-10-16 Anti-adhesive saw-dust molding sand and preparation method thereof

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Application Number Priority Date Filing Date Title
CN201310481205.1A CN103495697A (en) 2013-10-16 2013-10-16 Anti-adhesive saw-dust molding sand and preparation method thereof

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CN103495697A true CN103495697A (en) 2014-01-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106513565A (en) * 2016-12-26 2017-03-22 安庆迪力机械铸造有限公司 Foundry molding sand
CN112517834A (en) * 2020-11-19 2021-03-19 深圳市硬橙实业有限公司 Mixture for forming holes in casting molding and hole forming process

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1032127A (en) * 1987-04-04 1989-04-05 天津市南开区铸造涂料厂 Composite type binding material for casting
CN101797625A (en) * 2010-03-12 2010-08-11 厦门大学 Method for improving strength of molding sand
CN102284674A (en) * 2011-08-24 2011-12-21 无锡华冶钢铁有限公司 Anti-sticking cast molding sand
CN103042158A (en) * 2012-12-25 2013-04-17 马鞍山市万鑫铸造有限公司 High crush-resistance moulding sand and preparation method thereof
CN103042155A (en) * 2012-12-25 2013-04-17 马鞍山市万鑫铸造有限公司 Plant ash contained moulding sand and preparation method thereof
CN103042161A (en) * 2012-12-25 2013-04-17 马鞍山市万鑫铸造有限公司 Quartz sand contained moulding sand and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN1032127A (en) * 1987-04-04 1989-04-05 天津市南开区铸造涂料厂 Composite type binding material for casting
CN101797625A (en) * 2010-03-12 2010-08-11 厦门大学 Method for improving strength of molding sand
CN102284674A (en) * 2011-08-24 2011-12-21 无锡华冶钢铁有限公司 Anti-sticking cast molding sand
CN103042158A (en) * 2012-12-25 2013-04-17 马鞍山市万鑫铸造有限公司 High crush-resistance moulding sand and preparation method thereof
CN103042155A (en) * 2012-12-25 2013-04-17 马鞍山市万鑫铸造有限公司 Plant ash contained moulding sand and preparation method thereof
CN103042161A (en) * 2012-12-25 2013-04-17 马鞍山市万鑫铸造有限公司 Quartz sand contained moulding sand and preparation method thereof

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Title
杜西灵等: "《铸造技术与应用案例》", 31 October 2009 *
耿浩然等: "《实用铸件重力成型技术》", 31 October 2003 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106513565A (en) * 2016-12-26 2017-03-22 安庆迪力机械铸造有限公司 Foundry molding sand
CN112517834A (en) * 2020-11-19 2021-03-19 深圳市硬橙实业有限公司 Mixture for forming holes in casting molding and hole forming process

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Application publication date: 20140108

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