CN105964928A - Potassium titanate whisker-reinforced water-soluble mold core and preparation method thereof - Google Patents
Potassium titanate whisker-reinforced water-soluble mold core and preparation method thereof Download PDFInfo
- Publication number
- CN105964928A CN105964928A CN201610090134.6A CN201610090134A CN105964928A CN 105964928 A CN105964928 A CN 105964928A CN 201610090134 A CN201610090134 A CN 201610090134A CN 105964928 A CN105964928 A CN 105964928A
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- China
- Prior art keywords
- water
- parts
- potassium titanate
- crystal whisker
- soluble
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/105—Salt cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/167—Mixtures of inorganic and organic binding agents
Abstract
The invention discloses a potassium titanate whisker-reinforced water-soluble mold core. The water-soluble mold core comprises the following raw materials in parts by weight: 40-50 parts of kaolin, 5-10 parts of potassium titanate whisker, 3-5 parts of hydroxyapatite, 1-2 parts of sodium hexametaphosphate, 0.3-0.5 parts of propylene glycol alginate, 5-10 parts of sodium chloride, 5-10 parts of soluble glass, 0.1-0.15 parts of aluminium isopropoxide, 1-2 parts of hydroxypropyl methyl cellulose, and 10-15 parts of a bonding auxiliary agent. The water-soluble mold core has the advantages of good intensity, size stability, low hygroscopicity, good heat resisting property, small expansion coefficient, difficult generation of cracks and defects, good water soluble collapsibility, easy cleaning, environment protection, and high practical value.
Description
Technical field
The present invention relates to casting technology field, particularly relate to a kind of potassium titanate crystal whisker and strengthen water-soluble core and preparation method thereof.
Background technology
There is a large amount of component in process industry, its inwall is thin-wall complicated structure, and partial lumen is almost closed, and have is connected.At present conventional resin core, the collapsibility performance such as metal-cored are poor, and casting pouring rear interior cavity is difficult to clean up, and affects fineness and the dimensional accuracy of foundry goods inner surface, it is impossible to meet the demand of this type of cast casting.Therefore, high performance water-soluble core is developed the most necessary.
Water-soluble core refers to water-soluble material as binding agent and adds filler, the core then made by different molding modes such as cast, compacting sintering molding.After casting pouring, this core can dissolve defeated and dispersed in water, reaches to clear up the effect of core.Water-soluble core has does not gets angry, it is possible to decrease the feature such as casting defect, easy removing, does not damage foundry goods during cleaning, is particularly suited for complicated inner cavity and the foundry goods in bending duct.Further, water-soluble core is easily recycled, energy-conserving and environment-protective, is a kind of relatively advanced core-making technique, has good application prospect.At present, the combination property of water-soluble core is the best, remains the defects such as cracking poor at core strength, yielding, water-soluble collapsibility be undesirable, therefore limits it and extensively apply.Potassium titanate crystal whisker has excellent rigidity, crocking resistance and crack resistance, by reasonably adding and processing, can be effectively improved the performance of water-soluble core.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of high intensity, the potassium titanate crystal whisker of low moisture absorption strengthen water-soluble core and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of potassium titanate crystal whisker strengthens water-soluble core, and it is to be prepared by the raw material of following weight parts:
Kaolin 40-50, potassium titanate crystal whisker 5-10, hydroxyapatite 3-5, sodium hexameta phosphate 1-2, propylene glycol alginate 0.3-0.5, sodium chloride 5-10, waterglass 5-10, aluminum isopropylate. 0.1-0.15, hydroxypropyl methyl cellulose 1-2, adhesive aid 10-15；
Described adhesive aid is prepared by the raw materials in: guar gum 3-5, acrylic acid 0.5-1, alkenyl succinic anhydride 0.3-0.5, Ammonium persulfate. 0.01-0.015, calcium lignosulfonate 1-2, Silane coupling reagent KH-570 0.1-0.2, water 40-60；The preparation method of adhesive aid is that guar gum, alkenyl succinic anhydride and calcium lignosulfonate are added to the water 80-90 DEG C of stirring 1-2h, is subsequently adding remaining raw material 60-70 DEG C, 1000-1500r/min stirs 1-2h, after cooling and get final product.
A kind of potassium titanate crystal whisker strengthens the preparation method of water-soluble core, comprises the following steps:
(1) raw material is weighed by weight, first by Kaolin, potassium titanate crystal whisker and sodium hexameta phosphate co-ground 1-2h, more jointly add batch mixer mixed at high speed 10-15min with waterglass, sodium chloride, then sinter 1-2h in 600-700 DEG C, it is ground to 200-300 mesh after cooling, obtains component A；
(2) aluminum isopropylate. is added in the water of 60-80 times of weight, pH be adjusted to 3-4 and stir 2-4h in 85-95 DEG C, then temperature be adjusted to 40-60 DEG C and add remaining raw material stirring 1-2h, after cooling, obtaining B component；
(3) component A and B component are added mixed at high speed 10-20min after batch mixer, then it is loaded in mould compacting, treats its curing and demolding, at 200-250 DEG C, dry 12-24h, finally according to needs, its profile is carried out machining, obtain potassium titanate crystal whisker and strengthen water-soluble core.
The invention have the advantage that
The present invention is by guar gum, alkenyl succinic anhydride, acrylic acid, compounding and the molding of reaction prepared adhesive aid, beneficially core between calcium lignosulfonate and Silane coupling reagent KH-570, and can be effectively improved tensile property and the resistance to water soak of core；Simultaneously by the interpolation of the raw materials such as potassium titanate crystal whisker, the water-soluble core prepared is made to have good intensity, dimensional stability and agent of low hygroscopicity, heat-resist, the coefficient of expansion is little, is not susceptible to cracking, defect, and water-soluble collapsibility is good, being prone to remove, environmental protection, practical value is high.
Detailed description of the invention
A kind of potassium titanate crystal whisker strengthens water-soluble core, and it is to be prepared by the raw material of following weight parts:
Kaolin 40, potassium titanate crystal whisker 5, hydroxyapatite 3, sodium hexameta phosphate 1, propylene glycol alginate 0.3, sodium chloride 5, waterglass 5, aluminum isopropylate. 0.1, hydroxypropyl methyl cellulose 1, adhesive aid 10；
Described adhesive aid is prepared by the raw materials in: guar gum 3, acrylic acid 0.5, alkenyl succinic anhydride 0.3, Ammonium persulfate. 0.01, calcium lignosulfonate 1, Silane coupling reagent KH-570 0.1, water 40；The preparation method of adhesive aid is that guar gum, alkenyl succinic anhydride and calcium lignosulfonate are added to the water 80 DEG C of stirring 1h, is subsequently adding remaining raw material 60 DEG C, 1000r/min stirs 1h, after cooling and get final product.
A kind of potassium titanate crystal whisker strengthens the preparation method of water-soluble core, comprises the following steps:
(1) weigh raw material by weight, first by Kaolin, potassium titanate crystal whisker and sodium hexameta phosphate co-ground 1h, more jointly add batch mixer mixed at high speed 10min with waterglass, sodium chloride, then sinter 1h in 600 DEG C, be ground to 200 mesh after cooling, obtain component A；
(2) aluminum isopropylate. is added in the water of 60 times of weight, pH be adjusted to 3 and stir 2h in 85 DEG C, then temperature be adjusted to 40 DEG C and add remaining raw material stirring 1h, after cooling, obtaining B component；
(3) component A and B component are added mixed at high speed 10min after batch mixer, be then loaded in mould compacting, treat its curing and demolding, at 200 DEG C, dry 12h, finally according to needs, its profile is carried out machining, obtain potassium titanate crystal whisker and strengthen water-soluble core.
Through inspection, above-mentioned prepared water-soluble core performance is as follows:
Tensile strength: 7.3MPa；
Collapsibility performance: complete defeated and dispersed time≤10min in water；
Anti-moisture absorption property: place 24h under conditions of air humidity 80%, tensile strength reduces by 4.2%.
Claims (2)
1. a potassium titanate crystal whisker strengthens water-soluble core, it is characterised in that it is to be prepared by the raw material of following weight parts:
Kaolin 40-50, potassium titanate crystal whisker 5-10, hydroxyapatite 3-5, sodium hexameta phosphate 1-2, propylene glycol alginate 0.3-0.5, sodium chloride 5-10, waterglass 5-10, aluminum isopropylate. 0.1-0.15, hydroxypropyl methyl cellulose 1-2, adhesive aid 10-15；
Described adhesive aid is prepared by the raw materials in: guar gum 3-5, acrylic acid 0.5-1, alkenyl succinic anhydride 0.3-0.5, Ammonium persulfate. 0.01-0.015, calcium lignosulfonate 1-2, Silane coupling reagent KH-570 0.1-0.2, water 40-60；The preparation method of adhesive aid is that guar gum, alkenyl succinic anhydride and calcium lignosulfonate are added to the water 80-90 DEG C of stirring 1-2h, is subsequently adding remaining raw material 60-70 DEG C, 1000-1500r/min stirs 1-2h, after cooling and get final product.
A kind of potassium titanate crystal whisker the most according to claim 1 strengthens the preparation method of water-soluble core, it is characterised in that comprise the following steps:
(1) raw material is weighed by weight, first by Kaolin, potassium titanate crystal whisker and sodium hexameta phosphate co-ground 1-2h, more jointly add batch mixer mixed at high speed 10-15min with waterglass, sodium chloride, then sinter 1-2h in 600-700 DEG C, it is ground to 200-300 mesh after cooling, obtains component A；
(2) aluminum isopropylate. is added in the water of 60-80 times of weight, pH be adjusted to 3-4 and stir 2-4h in 85-95 DEG C, then temperature be adjusted to 40-60 DEG C and add remaining raw material stirring 1-2h, after cooling, obtaining B component；
(3) component A and B component are added mixed at high speed 10-20min after batch mixer, then it is loaded in mould compacting, treats its curing and demolding, at 200-250 DEG C, dry 12-24h, finally according to needs, its profile is carried out machining, obtain potassium titanate crystal whisker and strengthen water-soluble core.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610090134.6A CN105964928A (en) | 2016-02-18 | 2016-02-18 | Potassium titanate whisker-reinforced water-soluble mold core and preparation method thereof |
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| CN201610090134.6A CN105964928A (en) | 2016-02-18 | 2016-02-18 | Potassium titanate whisker-reinforced water-soluble mold core and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112079648A (en) * | 2020-09-02 | 2020-12-15 | 上海交通大学 | Easy-collapsibility ceramic core for precision casting and preparation method thereof |
| WO2020254220A1 (en) * | 2019-06-17 | 2020-12-24 | HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung | Additive mixture for moulding material mixtures for the production of water-glass-bonded casting moulds and casting cores |
| CN112439874A (en) * | 2020-10-10 | 2021-03-05 | 上海交通大学 | Ceramic shell material for precision casting of high-temperature alloy casting and preparation method thereof |
| CN112979333A (en) * | 2021-03-31 | 2021-06-18 | 上海联泰科技股份有限公司 | 3D printing preparation method of potassium titanate whisker reinforced silicon-based ceramic core |
Citations (6)
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| CN1172709A (en) * | 1996-02-29 | 1998-02-11 | 博登化学公司 | Binders for cores and molds |
| CN101073819A (en) * | 2007-06-22 | 2007-11-21 | 华中科技大学 | Soluble salt element for high-pressure casting |
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| CN101947637A (en) * | 2010-08-18 | 2011-01-19 | 沈阳汇亚通铸造材料有限责任公司 | Modified sodium silicate binder for cold core box and preparation 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 |
| CN103588490A (en) * | 2013-10-11 | 2014-02-19 | 铜陵市经纬流体科技有限公司 | Anti-moisture absorption CO2 gas blowing hardened water glass sand and preparation method thereof |
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2016
- 2016-02-18 CN CN201610090134.6A patent/CN105964928A/en active Pending
Patent Citations (6)
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| CN1172709A (en) * | 1996-02-29 | 1998-02-11 | 博登化学公司 | Binders for cores and molds |
| CN101073819A (en) * | 2007-06-22 | 2007-11-21 | 华中科技大学 | Soluble salt element for high-pressure casting |
| CN101869963A (en) * | 2010-07-06 | 2010-10-27 | 湖南江滨机器（集团）有限责任公司 | Foundry water-soluble composite salt core material, salt core preparation method and prepared salt core |
| CN101947637A (en) * | 2010-08-18 | 2011-01-19 | 沈阳汇亚通铸造材料有限责任公司 | Modified sodium silicate binder for cold core box and preparation 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 |
| CN103588490A (en) * | 2013-10-11 | 2014-02-19 | 铜陵市经纬流体科技有限公司 | Anti-moisture absorption CO2 gas blowing hardened water glass sand and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020254220A1 (en) * | 2019-06-17 | 2020-12-24 | HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung | Additive mixture for moulding material mixtures for the production of water-glass-bonded casting moulds and casting cores |
| CN112079648A (en) * | 2020-09-02 | 2020-12-15 | 上海交通大学 | Easy-collapsibility ceramic core for precision casting and preparation method thereof |
| CN112439874A (en) * | 2020-10-10 | 2021-03-05 | 上海交通大学 | Ceramic shell material for precision casting of high-temperature alloy casting and preparation method thereof |
| CN112979333A (en) * | 2021-03-31 | 2021-06-18 | 上海联泰科技股份有限公司 | 3D printing preparation method of potassium titanate whisker reinforced silicon-based ceramic core |
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Application publication date: 20160928 |