CN105964926A - Modified nacrite water-soluble mold core and preparation method thereof - Google Patents
Modified nacrite water-soluble mold core and preparation method thereof Download PDFInfo
- Publication number
- CN105964926A CN105964926A CN201610090090.7A CN201610090090A CN105964926A CN 105964926 A CN105964926 A CN 105964926A CN 201610090090 A CN201610090090 A CN 201610090090A CN 105964926 A CN105964926 A CN 105964926A
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- water
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- nacrite
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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
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- 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
-
- 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
-
- 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
- B22C1/20—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 of organic agents
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a modified nacrite water-soluble mold core. The water-soluble mold core comprises the following raw materials in parts by weight: 40-60 parts of nacrite, 5-10 parts of talcum powder, 2-4 parts of nano titanium dioxide, 0.3-0.5 parts of polyvinyl butyral, 0.5-1 part of polyoxyethylene castor oil, 5-10 parts of sodium chloride, 5-10 parts of water glass, 1-2 parts of mannitol, 0.1-0.15 parts of aluminium isopropoxide, and 10-15 parts of a bonding auxiliary agent. The water-soluble mold core has the advantages of good intensity, stability, low hygroscopicity, 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 modified pearl potter's clay 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.Nacrite has good fire resistance and stability, by reasonably modification, adds and processes, 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 modified pearl potter's clay water-soluble core and preparation method thereof of low moisture absorption.
The present invention is achieved by the following technical solutions:
A kind of modified pearl potter's clay water-soluble core, it is to be prepared by the raw material of following weight parts:
Nacrite 40-60, Pulvis Talci 5-10, nano titanium oxide 2-4, polyvinyl butyral resin 0.3-0.5, castor oil polyoxyethylene ether 0.5-1, sodium chloride 5-10, waterglass 5-10, mannitol 1-2, aluminum isopropylate. 0.1-0.15, 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.
The preparation method of a kind of modified pearl potter's clay water-soluble core, comprises the following steps:
(1) raw material is weighed by weight, first nacrite, nano titanium oxide, polyvinyl butyral resin and Oleum Ricini polyvinylether are added and appropriate dehydrated alcohol stirs 0.5-1h, obtain modified pearl potter's clay after drying, batch mixer mixed at high speed 10-15min is jointly added with Pulvis Talci, waterglass, sodium chloride, then 1-2h is sintered 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 modified pearl potter's clay 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 modified pearl potter's clay, making the water-soluble core prepared have good intensity, stability and agent of low hygroscopicity, resistance to elevated temperatures is good, is not susceptible to cracking, defect, and water-soluble collapsibility is good, it is easy to remove, environmental protection, and practical value is high.
Detailed description of the invention
A kind of modified pearl potter's clay water-soluble core, it is to be prepared by the raw material of following weight parts:
Nacrite 40, Pulvis Talci 5, nano titanium oxide 2, polyvinyl butyral resin 0.3, castor oil polyoxyethylene ether 0.5, sodium chloride 5, waterglass 5, mannitol 1, aluminum isopropylate. 0.1, 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.
The preparation method of a kind of modified pearl potter's clay water-soluble core, comprises the following steps:
(1) raw material is weighed by weight, first nacrite, nano titanium oxide, polyvinyl butyral resin and Oleum Ricini polyvinylether are added and appropriate dehydrated alcohol stirs 0.5h, obtain modified pearl potter's clay after drying, batch mixer mixed at high speed 10min is jointly added with Pulvis Talci, waterglass, sodium chloride, then 1h is sintered in 600 DEG C, it is ground to 200 mesh after cooling, obtains 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 modified pearl potter's clay water-soluble core.
Through inspection, above-mentioned prepared water-soluble core performance is as follows:
Tensile strength: 6.8MPa；
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 4.4%.
Claims (2)
1. a modified pearl potter's clay water-soluble core, it is characterised in that it is to be prepared by the raw material of following weight parts:
Nacrite 40-60, Pulvis Talci 5-10, nano titanium oxide 2-4, polyvinyl butyral resin 0.3-0.5, castor oil polyoxyethylene ether 0.5-1, sodium chloride 5-10, waterglass 5-10, mannitol 1-2, aluminum isopropylate. 0.1-0.15, 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.
The preparation method of a kind of modified pearl potter's clay water-soluble core the most according to claim 1, it is characterised in that comprise the following steps:
(1) raw material is weighed by weight, first nacrite, nano titanium oxide, polyvinyl butyral resin and Oleum Ricini polyvinylether are added and appropriate dehydrated alcohol stirs 0.5-1h, obtain modified pearl potter's clay after drying, batch mixer mixed at high speed 10-15min is jointly added with Pulvis Talci, waterglass, sodium chloride, then 1-2h is sintered 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 modified pearl potter's clay water-soluble core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090090.7A CN105964926A (en) | 2016-02-18 | 2016-02-18 | Modified nacrite water-soluble mold core and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610090090.7A CN105964926A (en) | 2016-02-18 | 2016-02-18 | Modified nacrite water-soluble mold core and preparation method thereof |
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| CN105964926A true CN105964926A (en) | 2016-09-28 |
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| CN201610090090.7A Pending CN105964926A (en) | 2016-02-18 | 2016-02-18 | Modified nacrite water-soluble mold core and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114671677A (en) * | 2022-04-11 | 2022-06-28 | 河北新玻尔瓷业有限公司 | Energy-saving high-hardness ceramic tile and production process thereof |
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| CN102786295A (en) * | 2012-08-06 | 2012-11-21 | 江苏大学 | Water-soluble ceramic core and preparation method thereof |
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| CN103601474A (en) * | 2013-10-24 | 2014-02-26 | 江苏大学 | Water-soluble ceramic core for high-temperature alloy monocrystal blades and preparation method of core |
| CN104493081A (en) * | 2014-12-09 | 2015-04-08 | 南京航空航天大学 | Wax injection mold for investment casting of hollow turbine blades and method for rapidly manufacturing wax injection mold |
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-
2016
- 2016-02-18 CN CN201610090090.7A patent/CN105964926A/en active Pending
Patent Citations (6)
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| CN102786295A (en) * | 2012-08-06 | 2012-11-21 | 江苏大学 | Water-soluble ceramic core and preparation method thereof |
| CN102877374A (en) * | 2012-09-25 | 2013-01-16 | 蚌埠凤凰滤清器有限责任公司 | Polytetrafluoroethylene fiber flame retardant filter paper |
| CN103601474A (en) * | 2013-10-24 | 2014-02-26 | 江苏大学 | Water-soluble ceramic core for high-temperature alloy monocrystal blades and preparation method of core |
| CN104493081A (en) * | 2014-12-09 | 2015-04-08 | 南京航空航天大学 | Wax injection mold for investment casting of hollow turbine blades and method for rapidly manufacturing wax injection mold |
| CN104801656A (en) * | 2015-04-01 | 2015-07-29 | 江守仲 | Highly fire-resistant foundry sand for steel casting and preparation method of highly fire-resistant foundry sand |
| CN105005105A (en) * | 2015-07-13 | 2015-10-28 | 安徽天堂唯高塑业科技有限公司 | Glass bead for engineering-grade reflective film and preparation method thereof |
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| 叶久新、文晓涵编著: "《熔模精铸工艺指南》", 30 June 2006 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114671677A (en) * | 2022-04-11 | 2022-06-28 | 河北新玻尔瓷业有限公司 | Energy-saving high-hardness ceramic tile and production process thereof |
| CN114671677B (en) * | 2022-04-11 | 2023-04-18 | 河北新玻尔瓷业有限公司 | Energy-saving high-hardness ceramic tile and production process thereof |
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Application publication date: 20160928 |
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