CN105964930A - Modified sea-tangle powder water-soluble mold core and preparation method thereof - Google Patents
Modified sea-tangle powder water-soluble mold core and preparation method thereof Download PDFInfo
- Publication number
- CN105964930A CN105964930A CN201610090141.6A CN201610090141A CN105964930A CN 105964930 A CN105964930 A CN 105964930A CN 201610090141 A CN201610090141 A CN 201610090141A CN 105964930 A CN105964930 A CN 105964930A
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- water
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- kelp powder
- added
- 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
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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)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a modified sea-tangle powder water-soluble mold core. The water-soluble mold core comprises the following raw materials in parts by weight: 10-15 parts of sea-tangle powder, 3-5 parts of silica sol, 0.1-0.2 parts of polydimethylsiloxane, 0.1-0.2 parts of sodium dodecanesulphonate, 30-40 parts of kaolin, 5-10 parts of calcium chloride, 5-10 parts of soluble glass, 0.1-0.15 parts of aluminium isopropoxide, 1-2 parts of glycerin, 0.1-0.2 parts of sodium benzoate, 0.5-1 part of fluorine ester, 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, good bonding property, strong impact resistance, and wide application scope.
Description
Technical field
The present invention relates to casting technology field, particularly relate to a kind of Modified kelp powder 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, and adhesive property is the best, and compressive property is poor, therefore limits it and extensively applies.
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, low moisture absorption, Modified kelp powder water-soluble core that adhesion strength is high and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of Modified kelp powder water-soluble core, it is to be prepared by the raw material of following weight parts:
Kelp Powder 10-15, Ludox 3-5, polydimethylsiloxane 0.1-0.2, dodecyl sodium sulfate 0.1-0.2, Kaolin 30-40, calcium chloride 5-10, waterglass 5-10, aluminum isopropylate. 0.1-0.15, glycerol 1-2, sodium benzoate 0.1-0.2, fluorine element fat 0.5-1, 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 kelp powder water-soluble core, comprises the following steps:
(1) raw material is weighed by weight, first Kelp Powder is added in the water of 5-10 times of weight and stir, it is subsequently adding Ludox, polydimethylsiloxane and dodecyl sodium sulfate 60-80 DEG C stirring 1-2h, Modified kelp powder is obtained after filtering and be dried completely, then 1-2h is sintered in 600-700 DEG C after Kaolin, waterglass, calcium chloride are added jointly batch mixer mixed at high speed 10-15min, mix with Modified kelp powder and fluorine element fat after cooling and be ground to 200-300 mesh, obtaining 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 kelp powder 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;The adhesive property of material is improved by Modified kelp powder, add remaining raw material to carry out compounding and processing simultaneously, the water-soluble core prepared has good intensity, stability and agent of low hygroscopicity, it is not susceptible to cracking, defect, water-soluble collapsibility is good, adhesive property is good, and shock resistance is strong, applied widely.
Detailed description of the invention
A kind of Modified kelp powder water-soluble core, it is to be prepared by the raw material of following weight parts:
Kelp Powder 10, Ludox 3, polydimethylsiloxane 0.1, dodecyl sodium sulfate 0.1, Kaolin 30, calcium chloride 5, waterglass 5, aluminum isopropylate. 0.1, glycerol 1, sodium benzoate 0.1, fluorine element fat 0.5, 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 kelp powder water-soluble core, comprises the following steps:
(1) raw material is weighed by weight, first Kelp Powder is added in the water of 5 times of weight and stir, it is subsequently adding Ludox, polydimethylsiloxane and dodecyl sodium sulfate 60 DEG C stirring 1h, Modified kelp powder is obtained after filtering and be dried completely, then 1h is sintered in 600 DEG C after Kaolin, waterglass, calcium chloride are added jointly batch mixer mixed at high speed 10min, mix with Modified kelp powder and fluorine element fat after cooling and be ground to 200 mesh, obtaining 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 kelp powder water-soluble core.
Through inspection, above-mentioned prepared water-soluble core performance is as follows:
Tensile strength: 5.6MPa;
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 5.8%.
Claims (2)
1. a Modified kelp powder water-soluble core, it is characterised in that it is to be prepared by the raw material of following weight parts:
Kelp Powder 10-15, Ludox 3-5, polydimethylsiloxane 0.1-0.2, dodecyl sodium sulfate 0.1-0.2, Kaolin 30-40, calcium chloride 5-10, waterglass 5-10, aluminum isopropylate. 0.1-0.15, glycerol 1-2, sodium benzoate 0.1-0.2, fluorine element fat 0.5-1, 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 kelp powder 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 Kelp Powder is added in the water of 5-10 times of weight and stir, it is subsequently adding Ludox, polydimethylsiloxane and dodecyl sodium sulfate 60-80 DEG C stirring 1-2h, Modified kelp powder is obtained after filtering and be dried completely, then 1-2h is sintered in 600-700 DEG C after Kaolin, waterglass, calcium chloride are added jointly batch mixer mixed at high speed 10-15min, mix with Modified kelp powder and fluorine element fat after cooling and be ground to 200-300 mesh, obtaining 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 kelp powder water-soluble core.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107282881A (en) * | 2017-06-30 | 2017-10-24 | 南昌航空大学 | A kind of water-soluble sand mould casting method of rapid solidification |
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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 |
CN102266907A (en) * | 2011-08-02 | 2011-12-07 | 贵州安吉航空精密铸造有限责任公司 | Method for improving gas-exhaust unblocked degree of mold core |
CN104801655A (en) * | 2015-04-01 | 2015-07-29 | 江守仲 | High-strength foundry casting sand and preparation method thereof |
-
2016
- 2016-02-18 CN CN201610090141.6A patent/CN105964930A/en active Pending
Patent Citations (4)
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CN101130677A (en) * | 2006-08-24 | 2008-02-27 | 罗门哈斯公司 | Curable composition |
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 |
CN102266907A (en) * | 2011-08-02 | 2011-12-07 | 贵州安吉航空精密铸造有限责任公司 | Method for improving gas-exhaust unblocked degree of mold core |
CN104801655A (en) * | 2015-04-01 | 2015-07-29 | 江守仲 | High-strength foundry casting sand and preparation method thereof |
Non-Patent Citations (2)
Title |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107282881A (en) * | 2017-06-30 | 2017-10-24 | 南昌航空大学 | A kind of water-soluble sand mould casting method of rapid solidification |
CN107282881B (en) * | 2017-06-30 | 2019-07-12 | 南昌航空大学 | It is a kind of quickly to solidify water-soluble sand mould casting method |
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Application publication date: 20160928 |