New! View global litigation for patent families

CN105414461A - High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand - Google Patents

High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand Download PDF

Info

Publication number
CN105414461A
CN105414461A CN 201510833818 CN201510833818A CN105414461A CN 105414461 A CN105414461 A CN 105414461A CN 201510833818 CN201510833818 CN 201510833818 CN 201510833818 A CN201510833818 A CN 201510833818A CN 105414461 A CN105414461 A CN 105414461A
Authority
CN
Grant status
Application
Patent type
Prior art keywords
sand
silicate
high
sodium
modified
Prior art date
Application number
CN 201510833818
Other languages
Chinese (zh)
Inventor
吴寿涛
Original Assignee
铜陵市经纬流体科技有限公司
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

Links

Abstract

The invention discloses high-permeability compact composite modified sodium silicate-bonded sand for pump valve castings. Compared with a conventional modified sodium silicate adhesive, a modified sodium silicate adhesive in the sodium silicate-bonded sand is more excellent in normal-temperature wet strength, the thixotropy and rheological property are better, and the reaction binding activity is high; in addition, environmental friendliness is achieved, and the use amount is smaller; furthermore, cordierite, nano-zirconia and the like in raw materials have the advantages of being low in coefficient of thermal expansion, good in chemical stability and the like, and accordingly the dimension stability and the structural compactness of the molding sand can be improved; meanwhile, the good permeability is achieved, nano calcium fluoride carried by bentonite is dispersed in the sand, the lubricating effect and the reinforcing effect are achieved, and a non-stick impermeable layer can be formed, so that the sand is prevented from adhering to the castings. The composite modified sodium silicate-bonded sand is excellent in comprehensive performance, not prone to absorbing moisture, high in strength, good in heat stability, high in casting accuracy and fast to scatter and clean, and casting requirements of high-accuracy pump valve castings can be met.

Description

一种泵阀铸件用高透气紧实复合改性水玻璃砂及其制备方法 One kind of tight valve cast composite modified silicate sand with high gas permeability and preparation method

技术领域 FIELD

[0001]本发明涉及水玻璃砂技术领域,尤其涉及一种栗阀铸件用高透气紧实复合改性水玻璃砂及其制备方法。 [0001] The present invention relates to a technical field silicate sand, more particularly to a valve Li cast composite modified silicate sand compaction and preparation method for high gas permeability.

背景技术 Background technique

[0002]型砂主要是由砂料、粘接剂以及辅助物等根据不同的比例混合制成的一类在铸造中用来造型的材料,根据使用的粘接剂不同,可分为粘土砂、水玻璃砂、树脂砂等等,其中水玻璃砂具有强度高、成本低、工艺简单、污染小等优点,被广泛使用。 [0002] The molding sand is mainly composed of abrasive, adhesive and the like in accordance with a class of auxiliary material for molding during casting made different proportions, depending on the adhesive used, it can be divided into clay sand, silicate sand, resin sand, etc., wherein the sodium silicate sand having a high strength, low cost, simple process, low pollution, etc., are widely used.

[0003]栗、阀门铸件具有壁薄、形状复杂等特点,在铸造过程中对型砂的质量要求尤为严格,型砂的质量也是关系到铸件质量的重要因素,水玻璃型砂虽然存在显著的优点,同时也存在很多缺点,明显的缺陷主要表现在常温强度低、溃散性差、旧砂再生困难,如不对其进行改性处理,很难提高栗阀铸件的质量。 [0003] Li, valve casting having a thin wall, complex shapes, etc., an important factor during casting of the molding sand quality requirements are particularly strict, quality sand is also related to the casting mass, a significant advantage of sodium silicate bonded sand, although present, while there are many disadvantages, mainly obvious defects at low temperature strength, poor collapsibility, sand reclamation difficult, if not subjected to modification, the valve is difficult to improve the quality of castings Li.

发明内容 SUMMARY

[0004]本发明目的就是为了弥补已有技术的缺陷,提供一种栗阀铸件用高透气紧实复合改性水玻璃砂及其制备方法。 [0004] The object of the present invention is to make up for the deficiencies of the prior art, there is provided a valve Li cast composite modified silicate sand compaction and preparation method for high gas permeability.

[0005]本发明是通过以下技术方案实现的: [0005] The present invention is achieved by the following technical solutions:

一种栗阀铸件用高透气紧实复合改性水玻璃砂,该水玻璃砂由以下重量份的原料制备得到:40_50目招研!土砂40-50、80_100目堇青石粉30-40、纳米氧化错3-5、60_80目莫来石粉10-12、海藻酸钙0.4-0.5、改性水玻璃粘接剂1.5-2、石墨粉1-2、膨润土2-3、氯化胆碱0.Ι-Ο.2, 纳米氟化钙0.4-0.5、50%乙醇水溶液8-10、硅烷偶联剂0.1-0.2。 Li one kind of valve casting with high permeability sand compaction modified silicate compound, sodium silicate sand which was prepared by the following weight material: 40_50 mesh strokes RESEARCH earth and sand 40-50,80_100 30-40 mesh cordierite powder, nano! 3-5,60_80 wrong oxide powder 10-12 mesh mullite, calcium alginate 0.4-0.5, 1.5-2 modified silicate adhesive, graphite 1-2, 2-3 bentonite, 0 choline chloride. Ι-Ο.2, nano calcium fluoride 0.4-0.5,50 8-10% aqueous ethanol solution, a silane coupling agent 0.1-0.2.

[0006]所述的改性水玻璃粘接剂由以下重量份的原料制成:40-50波美度的水玻璃Κ-ΐ 5、硅酸镁铝0.1-0.2、细菌纤维素2-3、季铵盐离子液体6-8;其改性制备方法为:先将细菌纤维素投入季铵盐离子液体中,加热至40-50°C,搅拌混合2-3h,随后加入其它剩余物料,继续搅拌混合40-50min,即得。 [0006] The modified silicate of the adhesive prepared from the following raw materials by weight: 40-50 Baume water glass Κ-ΐ 5, 0.1 to 0.2 magnesium aluminum silicate, bacterial cellulose 2-3 , quaternary ammonium ionic liquids 6-8; modified preparation method thereof: bacterial cellulose into first molten salts heated to 40-50 ° C, stirred for 2-3h mixed, followed by addition of the other remaining materials, stirring was continued mixing 40-50min, to obtain.

[0007]所述的一种栗阀铸件用高透气紧实复合改性水玻璃砂的制备方法为: [0007] A method for preparing said Li valve castings of high permeability sand compaction modified silicate compound is:

(1)先将纳米氟化钙、硅烷偶联剂加入乙醇水溶液中,超声搅拌分散40-50min,得纳米氟化钙分散液备用,随后加入膨润土,搅拌混合2-3h,搅拌结束后将混合物料倒入蒸发器中,在70-80°C环境中干燥处理,完全除去溶剂,随后将所得物料研磨破碎,得100-200目粉体备用; (1) First nano calcium fluoride, a silane coupling agent was added an aqueous solution of ethanol, the ultrasonic dispersion was stirred for 40-50min, to obtain dispersion of nano-calcium fluoride backup, followed by the addition of bentonite, 2-3h stirring and mixing, the mixture was stirred ends feed into the evaporator, dried at 70-80 ° C environment, the solvent was completely removed, and then crushing the resulting material triturated to give powder standby 100-200 mesh;

(2 )按照铝矾土砂、堇青石粉、莫来石粉、纳米氧化锆、石墨粉的取料顺序进行混料,搅拌混合40-50min后,加入步骤(1)所得物料,继续搅拌混合30_40min,最后再加入改性水玻璃粘接剂及其它剩余物料,搅拌混合均匀后吹入二氧化碳气体固化后出砂即得。 (2) The bauxite sand, cordierite powder and mullite powder, nano-zirconium oxide, graphite reclaimer is sequentially mixing, stirring and mixing after 40-50min, added in step (1) the material obtained, stirring was continued for mixing 30_40min, then add modified silicate adhesive and the other remaining materials, after mixing evenly blown into the carbon dioxide gas to obtain a cured sand.

[0008]本发明制备的改性水玻璃粘接剂较之常规的改性水玻璃粘接剂具有更为优良的常温湿态强度,触变性和流变性更好,反应粘结活性高,且绿色环保,用量更少;此外,原料中的堇青石、纳米氧化锆等材料热膨胀系数低、化学稳定性好等优点,可提高型砂的尺寸稳定性和结构紧实度,同时具备良好的透气性,而经膨润土负载的纳米氟化钙分散于砂料中有润滑、增强的功效,并可形成不沾防渗层,防止铸件粘砂;这种复合改性水玻璃砂综合性能优良,不易吸湿,强度高,热稳定性好,浇注精度高,溃散清理快,可满足高精度栗阀铸件的浇注要求。 [0008] The modified silicate adhesive preparation of the present invention over conventional modified silicate adhesive has more excellent constant temperature and humidity state strength, better thixotropy and rheology, high reactivity binding activity, and green, an amount less; in addition, the raw material of cordierite, zirconia nano material with a low coefficient of thermal expansion, chemical stability, etc., can improve the dimensional stability and tightness of the structure of sand, along with good permeability , while the nano-calcium fluoride loaded bentonite was dispersed in a sand feed lubrication, enhanced efficacy, and can form non-stick impermeable layer, to prevent sticking sand casting; this compound modified silicate sand excellent comprehensive performance, not hygroscopic , high strength, good thermal stability, high precision casting, cleaning collapsing fast, high accuracy to meet the cast castings Li valve.

具体实施方式 detailed description

[0009]该实施例的水玻璃砂由以下重量份的原料制备得到:40目铝矾土砂40、80目堇青石粉30、纳米氧化锆3、60目莫来石粉10、海藻酸钙0.4、改性水玻璃粘接剂1.5、石墨粉1、膨润土2、氯化胆碱0.1、纳米氟化钙0.4、50%乙醇水溶液8、硅烷偶联剂0.1。 [0009] Example embodiments of the silicate sand obtained material was prepared by the following weight: sand 40 mesh bauxite 40,80 cordierite powder 30 mesh, 3.60 nanozirconia 10 mesh mullite powder, calcium alginate 0.4, 1.5 modified silicate adhesive, a graphite powder, bentonite 2, 0.1 choline chloride, calcium fluoride nano 8 0.4,50% aqueous ethanol, 0.1 a silane coupling agent.

[0010]其中改性水玻璃粘接剂由以下重量份的原料制成:40波美度的水玻璃12、硅酸镁铝0.1、细菌纤维素2、季铵盐离子液体6;其改性制备方法为:先将细菌纤维素投入季铵盐离子液体中,加热至40°C,搅拌混合2h,随后加入其它剩余物料,继续搅拌混合40min,即得。 [0010] wherein the modified silicate adhesive is prepared from the following raw materials by weight: water glass of 40 degree Baume 12 0.1 magnesium aluminum silicate, BC 2, 6 molten salts; its modified preparation method: bacterial cellulose into first molten salts heated to 40 ° C, mixed by stirring 2h, the other remaining materials subsequently added, mixing stirring was continued for 40min, that is.

[0011]该实施例水玻璃砂的制备方法为: [0011] The preparation method as in Example silicate sand embodiment:

(1)先将纳米氟化钙、硅烷偶联剂加入乙醇水溶液中,超声搅拌分散40min,得纳米氟化钙分散液备用,随后加入膨润土,搅拌混合2h,搅拌结束后将混合物料倒入蒸发器中,在70°〇环境中干燥处理,完全除去溶剂,随后将所得物料研磨破碎,得100目粉体备用; (1) First nano calcium fluoride, a silane coupling agent was added an aqueous solution of ethanol, the ultrasonic dispersion was stirred for 40min, to obtain a dispersion of nano calcium fluoride standby, bentonite is added, followed by mixing with stirring 2h, after completion of the stirring mixture was charged into an evaporator reactor, dried at 70 ° square environment, the solvent was completely removed, and then crushing the resulting material triturated to give a powder of 100 mesh for later use;

(2 )按照铝矾土砂、堇青石粉、莫来石粉、纳米氧化锆、石墨粉的取料顺序进行混料,搅拌混合40min后,加入步骤(1)所得物料,继续搅拌混合30min,最后再加入改性水玻璃粘接剂及其它剩余物料,搅拌混合均匀后吹入二氧化碳气体固化后出砂即得。 (2) The bauxite sand, cordierite powder and mullite powder, nano-zirconium oxide, graphite reclaimer is sequentially mixing, stirring and mixing after 40min, was added in step (1) resulting material, mixing continued stirring 30min, and finally addition of modified sodium silicate adhesive and the other remaining materials after blowing carbon dioxide gas curable sand stirred to obtain uniform mixing.

[0012]将本实施例型砂制备成Φ 50 X 50mm的圆柱形试样进行性能测试结果为: [0012] The present embodiment sand prepared Φ 50 X 50mm cylindrical specimens in a performance test results:

抗拉强度:2.58Pa ;抗压强度:4.67MPa ;透气性:75;吸湿性< 1.0%;残留强度(800°C) Tensile strength: 2.58Pa; Compressive strength: 4.67MPa; air permeability: 75; moisture <1.0%; residual strength (800 ° C)

0.28MPa:回用率2 85%。 0.28MPa: recycling rate of 285%. 得到的铸件光洁致密,成品率达到95%以上。 Resulting casting smooth dense, more than 95% yield.

Claims (3)

  1. 1.一种栗阀铸件用高透气紧实复合改性水玻璃砂,其特征在于,该水玻璃砂由以下重量份的原料制备得到:40-50目铝矾土砂40-50、80-100目堇青石粉30-40、纳米氧化锆3_5、60-80目莫来石粉10-12、海藻酸钙0.4-0.5、改性水玻璃粘接剂1.5-2、石墨粉1-2、膨润土2-3、氯化胆碱0.1-0.2、纳米氟化钙0.4-0.5、50%乙醇水溶液8_10、硅烷偶联剂0.1-0.2。 A valve casting with high air permeability Li compaction sand modified silicate compound, wherein the sodium silicate sand obtained material was prepared by the following weight: sand 40-50 mesh bauxite 40-50,80-100 cordierite powder 30-40 mesh, nanozirconia 3_5,60-80 10-12 mesh mullite powder, calcium alginate 0.4-0.5, 1.5-2 modified silicate adhesive, graphite 1-2, bentonite 2 -3, 0.1-0.2 choline chloride, calcium fluoride nano 0.4-0.5,50 8_10% aqueous ethanol, a silane coupling agent 0.1-0.2.
  2. 2.如权利要求1所述的一种栗阀铸件用高透气紧实复合改性水玻璃砂,其特征在于,所述的改性水玻璃粘接剂由以下重量份的原料制成:40-50波美度的水玻璃12-15、硅酸镁铝0.1-0.2、细菌纤维素2-3、季铵盐离子液体6-8 ;其改性制备方法为:先将细菌纤维素投入季钱盐离子液体中,加热至40-50°C,搅拌混合2-3h,随后加入其它剩余物料,继续搅拌混合40_50min,即得。 2. An Li valve casting with high air-permeable composite modified silicate sand compaction according to claim 1, wherein said modified sodium silicate adhesive is prepared from the following raw materials by weight: 40 -50 12-15 Baume sodium silicate, magnesium aluminum silicate 0.1-0.2, bacterial cellulose 2-3, 6-8 quaternary ammonium ionic liquid; the preparation method is modified: first input quaternary bacterial cellulose money ionic liquid, heated to 40-50 ° C, stirring and mixing 2-3h, the other remaining materials subsequently added, mixing continued stirring 40_50min, i.e., too.
  3. 3.如权利要求1所述的一种栗阀铸件用高透气紧实复合改性水玻璃砂的制备方法,其特征在于,所述的制备方法为: (1)先将纳米氟化钙、硅烷偶联剂加入乙醇水溶液中,超声搅拌分散40-50min,得纳米氟化钙分散液备用,随后加入膨润土,搅拌混合2-3h,搅拌结束后将混合物料倒入蒸发器中,在70-80°C环境中干燥处理,完全除去溶剂,随后将所得物料研磨破碎,得100-200目粉体备用; (2)按照铝矾土砂、堇青石粉、莫来石粉、纳米氧化锆、石墨粉的取料顺序进行混料,搅拌混合40-50min后,加入步骤(1)所得物料,继续搅拌混合30_40min,最后再加入改性水玻璃粘接剂及其它剩余物料,搅拌混合均匀后吹入二氧化碳气体固化后出砂即得。 3. A valve as claimed in one kind of Li cast the preparation of a silicate sand with highly air-permeable composite compaction-modified, characterized in that the preparation process is: Ca (1) First fluorinated nanometers, the silane coupling agent was added an aqueous solution of ethanol, the ultrasonic dispersion was stirred for 40-50min, to obtain dispersion of nano-calcium fluoride standby, bentonite is added, followed by stirring and mixing 2-3h, after completion of the stirring mixture was charged into an evaporator at 70 80 ° C environment, the drying process, the solvent was completely removed, and then crushing the resulting material triturated to give powder of 100-200 mesh standby; (2) according to bauxite sand, cordierite powder and mullite powder, nano zirconia, graphite powder after reclaiming order mixing, stirring and mixing 40-50min, added in step (1) the material obtained, stirring was continued for mixing 30_40min, then add modified silicate adhesive and the other remaining materials, mixing evenly after blowing carbon dioxide after gas to obtain a cured sand.
CN 201510833818 2015-11-25 2015-11-25 High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand CN105414461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201510833818 CN105414461A (en) 2015-11-25 2015-11-25 High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201510833818 CN105414461A (en) 2015-11-25 2015-11-25 High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand

Publications (1)

Publication Number Publication Date
CN105414461A true true CN105414461A (en) 2016-03-23

Family

ID=55493245

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201510833818 CN105414461A (en) 2015-11-25 2015-11-25 High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand

Country Status (1)

Country Link
CN (1) CN105414461A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002099027A2 (en) * 2001-06-05 2002-12-12 Ecolab, Inc. Solid cleaning composition including stabilized active oxygen component
CN1666828A (en) * 2005-01-18 2005-09-14 湖北工业大学 Anti-seepage burnon casting paint made from alcohol base or aqueous sand powder
CN101554643A (en) * 2009-05-15 2009-10-14 扬州五亭桥缸套有限公司 Centrifugal casting coating for cylinder liners and preparation method thereof
CN101885035A (en) * 2010-06-23 2010-11-17 深圳市景鼎现代科技有限公司 Formula of water glass modifying additive and production process and using method thereof
CN103302236A (en) * 2013-06-20 2013-09-18 湖北工业大学 Alcohol-based non-zirconium composite refractory aggregate spray paint for wet cast steel and preparation method thereof
CN103521692A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand for casting aluminum and preparation method thereof
CN103586399A (en) * 2013-10-16 2014-02-19 昌利锻造有限公司 Molding sand capable of quick air permeation and heat dissipation and preparation method thereof
CN104259380A (en) * 2014-10-25 2015-01-07 哈尔滨理工大学 Composite modified water glass sand with high collapsibility and preparation method thereof
CN104557062A (en) * 2013-10-16 2015-04-29 太原科技大学 Spinel casting sand and preparation method thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002099027A2 (en) * 2001-06-05 2002-12-12 Ecolab, Inc. Solid cleaning composition including stabilized active oxygen component
CN1666828A (en) * 2005-01-18 2005-09-14 湖北工业大学 Anti-seepage burnon casting paint made from alcohol base or aqueous sand powder
CN101554643A (en) * 2009-05-15 2009-10-14 扬州五亭桥缸套有限公司 Centrifugal casting coating for cylinder liners and preparation method thereof
CN101885035A (en) * 2010-06-23 2010-11-17 深圳市景鼎现代科技有限公司 Formula of water glass modifying additive and production process and using method thereof
CN103302236A (en) * 2013-06-20 2013-09-18 湖北工业大学 Alcohol-based non-zirconium composite refractory aggregate spray paint for wet cast steel and preparation method thereof
CN103521692A (en) * 2013-10-16 2014-01-22 合肥市田源精铸有限公司 Molding sand for casting aluminum and preparation method thereof
CN103586399A (en) * 2013-10-16 2014-02-19 昌利锻造有限公司 Molding sand capable of quick air permeation and heat dissipation and preparation method thereof
CN104557062A (en) * 2013-10-16 2015-04-29 太原科技大学 Spinel casting sand and preparation method thereof
CN104259380A (en) * 2014-10-25 2015-01-07 哈尔滨理工大学 Composite modified water glass sand with high collapsibility and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李远才、董选普: "《铸造造型材料实用手册》", 30 June 2015 *
李远才: "《铸造涂料及应用》", 31 July 2007 *

Similar Documents

Publication Publication Date Title
CN103664073A (en) Autoclaved aerated concrete block prepared by use of yellow river sands and preparation method thereof
CN102603355A (en) Basic group geopolymer porous material
CN103641393A (en) Steam-press air-entrainment concrete self-heat conserving building block by using sand of Yellow River and preparation method
CN103521681A (en) Molding sand and preparation method thereof
CN103495693A (en) High-temperature-resisting easy collapse molding sand and preparation method thereof
CN102020473A (en) Wet refractory mortar and preparation method thereof
CN104801655A (en) High-strength foundry casting sand and preparation method thereof
CN103708788A (en) Composite thermal insulation mortar
CN103396077A (en) Crack-resistant thermal insulation mortar
CN101885035A (en) Formula of water glass modifying additive and production process and using method thereof
CN103449765A (en) Preparation method of anti-corrosion aerated brick
CN101805203A (en) Heat-preserving composite foam concrete and preparation method thereof
CN103739264A (en) Hydrophobic desulfurization gypsum based EPS (Expandable Polystyrene) heat preservation mortar
CN103521684A (en) Corundum-mullite modified molding sand and preparation method thereof
CN103042155A (en) Plant ash contained moulding sand and preparation method thereof
CN103058623A (en) Foamed water glass expanded perlite thermal insulating board
CN102584176A (en) Method for preparing ceramic wall and floor tile by utilizing construction waste
CN102786295A (en) Water-soluble ceramic core and preparation method thereof
CN101696586A (en) Natural volcanic ash autoclaved aerated concrete block and preparation method thereof
CN103601524A (en) Fibre reinforced coal ash based geopolymer foam material and preparation method thereof
CN103521690A (en) Easily-collapsible mud core molding sand and preparation method thereof
CN101229574A (en) Method of preparing water-soluble mold core
CN102351478A (en) Inorganic particle foam concrete composite insulation board
CN103086657A (en) Interface-enhanced anti-crack mortar and production technology thereof
CN102260093A (en) One kind of a chemical foaming foam concrete Preparation Method

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination