CN105108035A - Low-thermal-expansion high-strength modified composite sodium silicate-bonded sand for steel casting and preparation method of modified composite sodium silicate-bonded sand - Google Patents

Low-thermal-expansion high-strength modified composite sodium silicate-bonded sand for steel casting and preparation method of modified composite sodium silicate-bonded sand Download PDF

Info

Publication number
CN105108035A
CN105108035A CN201510487962.9A CN201510487962A CN105108035A CN 105108035 A CN105108035 A CN 105108035A CN 201510487962 A CN201510487962 A CN 201510487962A CN 105108035 A CN105108035 A CN 105108035A
Authority
CN
China
Prior art keywords
sand
sodium silicate
water glass
strength
steel
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
Application number
CN201510487962.9A
Other languages
Chinese (zh)
Inventor
陈传松
陈小乐
Original Assignee
陈传松
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 陈传松 filed Critical 陈传松
Priority to CN201510487962.9A priority Critical patent/CN105108035A/en
Publication of CN105108035A publication Critical patent/CN105108035A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses low-thermal-expansion high-strength modified composite sodium silicate-bonded sand for steel casting. Used sand, quartz sand, active silica powder and the like with different grain diameters and different proportions are selected by the composite sand for serving as sand, and the good breathability and the good strength are achieved; during modeling, liquidity is good, the heated stability is good, and deformation is not prone to happening; and compared with a traditional sodium silicate binding agent, a modified sodium silicate binding agent has the higher strength, the higher collapsibility and the higher utilization rate, and the quality of the casting is effectively improved.

Description

A kind of steel-casting low thermal expansion high strength modification Compound Water glass sand and preparation method thereof
Technical field
The present invention relates to cast steel molding sand manufacturing technology field, particularly relate to a kind of steel-casting low thermal expansion high strength modification Compound Water glass sand and preparation method thereof.
Background technology
The quality of foundry goods is directly connected in the quality of the casting process Sand of steel part, molding sand is mainly mixed according to different ratios by Modeling Materials such as sand material, bonding agent and adminiclies, bonding agent is wherein the important Modeling Material of a class, the height of its comprehensive quality is directly connected to surface quality and the inherent quality of foundry goods, and current the most widely used bonding agent is mainly the inorganic adhesive of representative with water-glass sand and take furane resins as the resin adhesive of representative.
Use waterglass as the molding sand of bonding agent, there is the advantages such as equipment is simple, easy to operate, nonpoisonous and tasteless, cost is lower, but also there is a lot of shortcoming in it, obvious defect is mainly manifested in that intensity is low, collapsibility is poor, recycling is difficult, govern the application of water-glass sand, therefore a kind of efficient, low toxicity of necessary development, effectively improve the modified sodium silicate sand of casting quality, to adapt to industry demand, improve casting quality.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of steel-casting low thermal expansion high strength modification Compound Water glass sand and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of steel-casting low thermal expansion high strength modification Compound Water glass sand, this complex sand is prepared by the raw material of following weight portion: active micro silicon powder 4-5,80-100 order quartz sand 20-30, α-Al 2o 3micro mist 6-8,60-80 order old sand 35-40, nanometer silicon carbide 2-3, modified water glass bonding agent 2-3, neopelex 0.1-0.2, potassium silicate 0.1-0.2, water 12-15.
Described modified water glass bonding agent is made up of the raw material of following weight portion: the waterglass 15-20 of 55-60 Baume degrees, mesoporous nano-alumina 2-3, aluminium-magnesium silicate 0.2-0.3, carboxymethyl cellulose 0.2-0.3, solid content are Ludox 4-5, lithium tetraborate 0.1-0.2, methenamine 0.01-0.02, the glucose 1-2 of 20-25%; Its preparation method is: first drop in Ludox by mesoporous nano-alumina, the ultrasonic mesoporous nano-alumina that makes is dispersed in the solution, add waterglass more subsequently, continue dispersed with stirring 20-30min, mixed solution is heated to 50-60 DEG C, add other leftover materials one by one, be uniformly mixed 80-100min, to obtain final product.
The preparation method of described a kind of steel-casting low thermal expansion high strength modification Compound Water glass sand, described preparation method is: be first dissolved in the water by neopelex, nanometer silicon carbide is dropped in solution, ultrasonicly make it be uniformly dispersed, then progressively add old sand, quartz sand, active micro silicon powder, be uniformly mixed heated-air drying after 30-40min, remove moisture completely, add other leftover materials after cooling, continue to be uniformly mixed 4-5min, shake out after being blown into carbon dioxide solidification and get final product.
Advantage of the present invention is: select the old sand of different-grain diameter, different ratio, quartz sand, active micro silicon powder etc. as sand material, there is good gas permeability and intensity, good fluidity during moulding, by Heat stability is good, not yielding, and the more traditional waterglass bonding agent of the waterglass bonding agent of modification has higher intensity and collapsibility, utilization rate is higher, effectively raises the quality of foundry goods.
Detailed description of the invention
A kind of steel-casting low thermal expansion high strength modification Compound Water glass sand, it is prepared by the raw material of following weight portion: active micro silicon powder 4,80 order quartz sand 28, α-Al 2o 3micro mist 8,60 order old sand 38, nanometer silicon carbide 2.5, modified water glass bonding agent 2.5, neopelex 0.1, potassium silicate 0.1, water 12.
Described modified water glass bonding agent is made up of the raw material of following weight portion: the waterglass 18 of 55 Baume degrees, mesoporous nano-alumina 3, aluminium-magnesium silicate 0.3, carboxymethyl cellulose 0.2, solid content are Ludox 4.5, lithium tetraborate 0.2, methenamine 0.02, the glucose 1.5 of 20%; Its preparation method is: first drop in Ludox by mesoporous nano-alumina, the ultrasonic mesoporous nano-alumina that makes is dispersed in the solution, add waterglass more subsequently, continue dispersed with stirring 30min, mixed solution is heated to 50-60 DEG C, add other leftover materials one by one, be uniformly mixed 85min, to obtain final product.
Described modified sodium silicate sand preparation method is: be first dissolved in the water by neopelex, nanometer silicon carbide is dropped in solution, ultrasonicly it is made to be uniformly dispersed, then old sand, quartz sand, active micro silicon powder is progressively added, be uniformly mixed heated-air drying after 35min, remove moisture completely, after cooling, add other leftover materials, continue to be uniformly mixed 4min, shake out after being blown into carbon dioxide solidification and get final product.
The performance test results of the molding sand that the present embodiment prepares is:
Green compression strength: 0.18MPa; Air penetrability: 86%; Wet anti-intensity: the 442KPa of heat; Shatter index: 89%.The cast(ing) surface obtained is bright and clean, and the very little flawless of pore, yield rate reaches more than 90%.

Claims (3)

1. a steel-casting low thermal expansion high strength modification Compound Water glass sand, it is characterized in that, this complex sand is prepared by the raw material of following weight portion: active micro silicon powder 4-5,80-100 order quartz sand 20-30, α-Al 2o 3micro mist 6-8,60-80 order old sand 35-40, nanometer silicon carbide 2-3, modified water glass bonding agent 2-3, neopelex 0.1-0.2, potassium silicate 0.1-0.2, water 12-15.
2. a kind of steel-casting low thermal expansion high strength modification Compound Water glass sand as claimed in claim 1, it is characterized in that, described modified water glass bonding agent is made up of the raw material of following weight portion: the waterglass 15-20 of 55-60 Baume degrees, mesoporous nano-alumina 2-3, aluminium-magnesium silicate 0.2-0.3, carboxymethyl cellulose 0.2-0.3, solid content are Ludox 4-5, lithium tetraborate 0.1-0.2, methenamine 0.01-0.02, the glucose 1-2 of 20-25%; Its preparation method is: first drop in Ludox by mesoporous nano-alumina, the ultrasonic mesoporous nano-alumina that makes is dispersed in the solution, add waterglass more subsequently, continue dispersed with stirring 20-30min, mixed solution is heated to 50-60 DEG C, add other leftover materials one by one, be uniformly mixed 80-100min, to obtain final product.
3. the preparation method of a kind of steel-casting low thermal expansion high strength modification Compound Water glass sand as claimed in claim 1, it is characterized in that, described preparation method is: be first dissolved in the water by neopelex, nanometer silicon carbide is dropped in solution, ultrasonicly it is made to be uniformly dispersed, then old sand, quartz sand, active micro silicon powder is progressively added, be uniformly mixed heated-air drying after 30-40min, remove moisture completely, other leftover materials are added after cooling, continue to be uniformly mixed 4-5min, shake out after being blown into carbon dioxide solidification and get final product.
CN201510487962.9A 2015-08-11 2015-08-11 Low-thermal-expansion high-strength modified composite sodium silicate-bonded sand for steel casting and preparation method of modified composite sodium silicate-bonded sand Pending CN105108035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510487962.9A CN105108035A (en) 2015-08-11 2015-08-11 Low-thermal-expansion high-strength modified composite sodium silicate-bonded sand for steel casting and preparation method of modified composite sodium silicate-bonded sand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510487962.9A CN105108035A (en) 2015-08-11 2015-08-11 Low-thermal-expansion high-strength modified composite sodium silicate-bonded sand for steel casting and preparation method of modified composite sodium silicate-bonded sand

Publications (1)

Publication Number Publication Date
CN105108035A true CN105108035A (en) 2015-12-02

Family

ID=54656268

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510487962.9A Pending CN105108035A (en) 2015-08-11 2015-08-11 Low-thermal-expansion high-strength modified composite sodium silicate-bonded sand for steel casting and preparation method of modified composite sodium silicate-bonded sand

Country Status (1)

Country Link
CN (1) CN105108035A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105665614A (en) * 2016-02-17 2016-06-15 安徽索立德铸业有限公司 Casting sand for casting sand mold and preparing method of casting sand
CN105798224A (en) * 2016-04-06 2016-07-27 台州市椒江永固船舶螺旋桨厂 Sodium silicate-bonded sand and production technique thereof
CN106064227A (en) * 2016-05-26 2016-11-02 合肥市田源精铸有限公司 A kind of molding sand with high green compression strength and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1238249A (en) * 1999-05-26 1999-12-15 沈阳市铸造材料研究所 Modified water glass for casting and its preparing process
CN102366812A (en) * 2011-10-11 2012-03-07 许立新 Preparation method for sodium silicate sand used for casting
CN103056285A (en) * 2013-01-29 2013-04-24 东华大学 Sodium silicate silica sand anti-sticking additive for cast steel and application method of additive
CN103495693A (en) * 2013-10-16 2014-01-08 合肥市田源精铸有限公司 High-temperature-resisting easy collapse molding sand and preparation method thereof
CN103567356A (en) * 2013-10-11 2014-02-12 铜陵市经纬流体科技有限公司 Sodium silicate sand with high wet-compressive strength and preparation method thereof
CN104470652A (en) * 2012-04-26 2015-03-25 Ask化学品股份有限公司 Method for producing moulds and cores for metal casting and moulds and cores produced according to this method
CN104736270A (en) * 2012-10-19 2015-06-24 Ask化学品股份有限公司 Mould material mixtures on the basis of inorganic binders, and method for producing moulds and cores for metal casting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1238249A (en) * 1999-05-26 1999-12-15 沈阳市铸造材料研究所 Modified water glass for casting and its preparing process
CN102366812A (en) * 2011-10-11 2012-03-07 许立新 Preparation method for sodium silicate sand used for casting
CN104470652A (en) * 2012-04-26 2015-03-25 Ask化学品股份有限公司 Method for producing moulds and cores for metal casting and moulds and cores produced according to this method
CN104736270A (en) * 2012-10-19 2015-06-24 Ask化学品股份有限公司 Mould material mixtures on the basis of inorganic binders, and method for producing moulds and cores for metal casting
CN103056285A (en) * 2013-01-29 2013-04-24 东华大学 Sodium silicate silica sand anti-sticking additive for cast steel and application method of additive
CN103567356A (en) * 2013-10-11 2014-02-12 铜陵市经纬流体科技有限公司 Sodium silicate sand with high wet-compressive strength and preparation method thereof
CN103495693A (en) * 2013-10-16 2014-01-08 合肥市田源精铸有限公司 High-temperature-resisting easy collapse molding sand and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105665614A (en) * 2016-02-17 2016-06-15 安徽索立德铸业有限公司 Casting sand for casting sand mold and preparing method of casting sand
CN105665614B (en) * 2016-02-17 2018-07-06 安徽索立德铸业有限公司 A kind of sand casting casting model powder and preparation method thereof
CN105798224A (en) * 2016-04-06 2016-07-27 台州市椒江永固船舶螺旋桨厂 Sodium silicate-bonded sand and production technique thereof
CN106064227A (en) * 2016-05-26 2016-11-02 合肥市田源精铸有限公司 A kind of molding sand with high green compression strength and preparation method thereof

Similar Documents

Publication Publication Date Title
CN102380576B (en) Mixed casting molding sand and preparation method thereof
CN104117628B (en) A kind of graphite powder cast paint and preparation method thereof
JP6266584B2 (en) Use of organic acid metal salts as additives in casting mixtures.
CN104139154B (en) A kind of phenolic resins self-hardening sand and preparation method thereof
CN105436411B (en) A kind of high ventilative lost-foam casting method
CN104801655A (en) High-strength foundry casting sand and preparation method thereof
CN100503081C (en) Adhesive for casting mold, manufacturing core and method of manufacturing the same
CA3015239C (en) Curing agent for water glass molding and manufacturing method and use thereof
JP5418950B2 (en) Core sand or foundry sand, method for producing core sand or foundry sand, method for producing mold part, mold part, and method of using core sand or foundry sand
CN102407275B (en) Expendable pattern casting (EPC) molding shell paint for casting steel and preparation method thereof
CN106077498A (en) A kind of core manufacturing craft of diesel engine cylinder block
CN105618667A (en) Refractory casting sand
CN102933332B (en) Structure for casting production
CN101773980B (en) Alcohol group mould coating used for low-pressure casting of aluminum alloy sand mold and coating process thereof
CN100534670C (en) Fine casting method for super long lower pressure partition guide blade of turbine in stainless steel investment mold
CN106077421B (en) A kind of gravitational casting molding sand and its preparing process
CN103586395A (en) Molding sand for automatic production line and preparation method thereof
CN101947637A (en) Modified sodium silicate binder for cold core box and preparation thereof
CN103203432B (en) Cast steel wheel center mold and using method thereof
CN101486068A (en) Alcohol group zircon powder coating for large casting
CN102921878B (en) Precoated sand and preparation method thereof
CN105522112B (en) Magnesium alloy investment casting high collapsibility ceramic shell and preparation method thereof
CN102836961B (en) Lost foam coating for large casting and preparation method of lost foam coating
CN104259379B (en) For the defeated and dispersed toughener of sodium silicate sand
CN105499497A (en) V-method casting process

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20151202