CN106955966B - A kind of casting inorganic binder and preparation method thereof - Google Patents
A kind of casting inorganic binder and preparation method thereof Download PDFInfo
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- CN106955966B CN106955966B CN201710224871.5A CN201710224871A CN106955966B CN 106955966 B CN106955966 B CN 106955966B CN 201710224871 A CN201710224871 A CN 201710224871A CN 106955966 B CN106955966 B CN 106955966B
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- sodium
- inorganic binder
- silicate
- methyl
- oxide
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Classifications
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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
- 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
- B22C1/18—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 inorganic agents
- B22C1/186—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 inorganic agents contaming ammonium or metal silicates, silica sols
- B22C1/188—Alkali metal silicates
Abstract
The invention discloses a kind of casting inorganic binders and preparation method thereof, belong to casting sand binding material.The adhesive property of the casting inorganic binder is good, and stable system is environment-protecting and non-poisonous, it is from a wealth of sources, with preferable practical application, which is applied in Foundry Production, usage amount is few, intensity is high, mobility, moisture resistance, collapsibility etc. are had excellent performance, and improve casting quality, reduce production cost, regenerating used is easy, highly beneficial to operator and environment.
Description
Technical field
The present invention relates to casting sand binding materials, and in particular to a kind of casting inorganic binder and preparation method thereof.
Technical background
Moulding sand binder used in Foundry Production includes organic and inorganic at present, and organic binder is mostly resin
Polymer is cleaned to regenerating used from mulling moulding, casting, each link makes operator and environment in process of production
At pollution and injury, resinous polymer belongs to petroleum chemicals, and resource is non-renewable, and cost is high.Inorganic binder due to
Its environmental-protecting performance, resource are extensive, and the advantages such as at low cost can gradually replace resinae organic binder.But at present in Foundry Production
Generally using inorganic binder but there are intensity it is low, easy to aging, moisture resistance is poor, collapsibility is bad, regeneration is difficult the problems such as.
Therefore, it is necessary to develop the more superior inorganic binder of performance.
Summary of the invention
The purpose of the present invention provides a kind of casting inorganic binder and preparation method thereof in view of the above problems, adopts
With the good (relative humidity of tensile strength >=2.5MPa, moisture resistance for the inorganic binder molding sand that technical solution of the present invention is prepared
Under the conditions of 98%, before 24 hours degree decline be no more than 20%), collapsibility performance it is good (retained strength≤0.015MPa), be convenient for old sand
Reuse.
The present invention also provides casting inorganic binders described above and preparation method thereof.
A kind of casting inorganic binder, which includes the raw material of following parts by weight:
50~99 parts of silicate；
Methyl silicate or 0.1~10 part of methyl-silicone oil or sodium alkyl benzene sulfonate；
Sodium tripolyphosphate or 1~50 part of calgon.
As preferred: the inorganic binder includes the raw material of following parts by weight:
65~95 parts of silicate；
Methyl silicate or 0.5~5 part of methyl-silicone oil or sodium alkyl benzene sulfonate；
Sodium tripolyphosphate or 1~30 part of calgon.
Further preferred: the inorganic binder includes the raw material of following parts by weight:
70~90 parts of silicate；
Methyl silicate or 0.5~3 part of methyl-silicone oil or sodium alkyl benzene sulfonate；
Sodium tripolyphosphate or 10~25 parts of calgon.
In some preferred technical solutions: methyl silicate is sodium methyl silicate or potassium methyl silicate.
In some preferred technical solutions: silicate is sodium metasilicate or sodium potassium silicate.
A kind of casting preparation method of inorganic binder, it is characterised in that: it is 45 that this method, which is in temperature,
Be added in silicate under the conditions of~65 DEG C methyl silicate or methyl-silicone oil or sodium alkyl benzene sulfonate and sodium tripolyphosphate or
Calgon, until system is clarified.
In the preparation method of above-mentioned casting inorganic binder: methyl silicate is sodium methyl silicate or methane-siliconic acid
Potassium.
In the preparation method of above-mentioned casting inorganic binder: silicate is sodium metasilicate or sodium potassium silicate.
The present invention forms certain stereochemical structure gel skeleton by formula in a heated state, and it is solidifying that silicon after molding sand, phosphorus is made
Glue forms stable gel network framework under the action of curing agent (crosslinking agent), its adhesion strength, methane-siliconic acid is significantly greatly increased
The hydrophobic group of salt makes molding sand anti humility performance be able to very big improvement, and sodium tripolyphosphate is formed by glassy state after high temperature casting
Substance, while cooling because constriction coefficient differs greatly, the huge difference of internal stress causes the glass state material formed with silicate
Bonded bridge cracking, molding sand collapsibility are improved.
Beneficial effects of the present invention: the adhesive property of the casting inorganic binder is good, and stable system is environment-protecting and non-poisonous, comes
Source is extensive, has preferable practical application, which is applied in Foundry Production, and usage amount is few, and intensity is high,
Mobility, moisture resistance, collapsibility etc. are had excellent performance, and improve casting quality, reduce production cost, regenerating used is easy, to operation
Person and environment are highly beneficial.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, and but the scope of the present invention is not limited thereto:
Embodiment 1
The composition of the present embodiment inorganic binder is as follows:
Sodium metasilicate: 89g；Sodium methyl silicate: 1g, sodium tripolyphosphate: 10g
The preparation method of the present embodiment inorganic binder:
Step 1: sodium metasilicate 89g is taken to be added in reaction kettle by weight percentage, uniform stirring is simultaneously heated to 50 DEG C；
Step 2: taking sodium methyl silicate 1g and sodium tripolyphosphate 10g to be added in reaction kettle by weight percentage, stirring
Uniformly clarified to system.
30g inorganic binder is added in the 50/100 mesh normal sand of 1kg, and 4.5g organic ester curing agent is added, this is solid
Agent each component are as follows: glyceryl triacetate, diacetine, an acetin, ethylene acetate, one vinegar of ethylene glycol
One of acid esters, propene carbonate or its any several mixture.8 word sample of molding sand is made in mulling 2 minutes at normal temperature.It surveys
Obtain 24 hours tensile strength: 2.5MPa；Retained strength: 0.01MPa；Tensile strength under 98% environment of relative humidity: 2.1MPa.
Embodiment 2
The composition of the present embodiment inorganic binder is as follows:
Sodium potassium silicate: 72g；Potassium methyl silicate: 3g, calgon: 25g
The preparation method of the present embodiment inorganic binder:
Step 1: sodium potassium silicate 72g is taken to be added in reaction kettle by weight percentage, uniform stirring is simultaneously heated to 50 DEG C；
Step 2: taking potassium methyl silicate 3g and calgon 25g to be added in reaction kettle by weight percentage, stirring
Uniformly clarified to system.
20g inorganic binder is added in the 50/100 mesh normal sand of 1kg, and 6g crosslinking agent is added, the crosslinking agent each group
Divide content are as follows: silica 65%, aluminium oxide 20%, calcium oxide 6%, sodium oxide molybdena 2%, iron oxide 1%, potassium oxide 3%, oxidation
Zirconium 1%, zinc oxide 2%.8 word sample of molding sand is made in mulling 2 minutes at normal temperature.120s is blown with 150 DEG C of hot-airs, after cooling
Measure tensile strength: 3.5MPa；Retained strength: 0.01MPa；The lower 24 hours tensile strength of 98% environment of relative humidity: 3.0MPa.
Embodiment 3
The composition of the present embodiment inorganic binder is as follows:
Sodium metasilicate: 80g；Methyl-silicone oil: 1.5g, sodium tripolyphosphate: 18g
The preparation method of the present embodiment inorganic binder:
Step 1: sodium metasilicate 80g is taken to be added in reaction kettle by weight percentage, uniform stirring is simultaneously heated to 50 DEG C；
Step 2: taking methyl-silicone oil 1.5g, sodium tripolyphosphate 18g to be added in reaction kettle by weight percentage, and stirring is equal
It is even to system clarify.
20g inorganic binder is added in the 50/100 mesh normal sand of 1kg, and 6g crosslinking agent is added, the crosslinking agent each group
Divide content are as follows: silica 65%, aluminium oxide 20%, calcium oxide 6%, sodium oxide molybdena 2%, iron oxide 1%, potassium oxide 3%, oxidation
Zirconium 1%, zinc oxide 2%.8 word sample of molding sand is made in mulling 2 minutes at normal temperature.120s is blown with 150 DEG C of hot-airs, after cooling
Measure tensile strength: 3.6MPa；Retained strength: 0.02MPa；The lower 24 hours tensile strength of 98% environment of relative humidity: 3.2MPa
Embodiment 4
The composition of the present embodiment inorganic binder is as follows:
Sodium metasilicate: 72g；Sodium alkyl benzene sulfonate: 3g, sodium tripolyphosphate: 25g
The preparation method of the present embodiment inorganic binder:
Step 1: sodium metasilicate 72g is taken to be added in reaction kettle by weight percentage, uniform stirring is simultaneously heated to 50 DEG C；
Step 2: taking sodium alkyl benzene sulfonate 3g, sodium tripolyphosphate 25g to be added in reaction kettle by weight percentage, stirring
Uniformly clarified to system.
20g inorganic binder is added in the 50/100 mesh normal sand of 1kg, and 6g crosslinking agent is added, the crosslinking agent each group
Divide content are as follows: silica 65%, aluminium oxide 20%, calcium oxide 6%, sodium oxide molybdena 2%, iron oxide 1%, potassium oxide 3%, oxidation
Zirconium 1%, zinc oxide 2%.8 word sample of molding sand is made in mulling 2 minutes at normal temperature.120s is blown with 150 DEG C of hot-airs, after cooling
Measure tensile strength: 3.8MPa；Retained strength: 0.02MPa；The lower 24 hours tensile strength of 98% environment of relative humidity: 3.5MPa.
Claims (2)
1. the application method that inorganic binder is used in a kind of casting, it is characterised in that: the application method is the 50/100 of 1kg
20g inorganic binder is added in mesh normal sand, and 6g crosslinking agent is added, the crosslinking agent each component content are as follows: silica 65%,
Aluminium oxide 20%, calcium oxide 6%, sodium oxide molybdena 2%, iron oxide 1%, potassium oxide 3%, zirconium oxide 1%, zinc oxide 2%；Mulling 2 at normal temperature
Minute, 120s is blown with 150 DEG C of hot-airs；
The inorganic binder includes the raw material of following parts by weight:
Sodium metasilicate or 65 ~ 95 parts of sodium potassium silicate；
Methyl silicate or 0.5 ~ 5 part of methyl-silicone oil or sodium alkyl benzene sulfonate；
Sodium tripolyphosphate or 1 ~ 30 part of calgon；
The preparation method of the inorganic binder is that first is added in sodium metasilicate or sodium potassium silicate under the conditions of temperature is 45 ~ 65 DEG C
Base silicate or methyl-silicone oil or sodium alkyl benzene sulfonate and sodium tripolyphosphate or calgon, until system is clarified；
And the methyl silicate is sodium methyl silicate or potassium methyl silicate.
2. the application method that inorganic binder is used in casting according to claim 1, it is characterised in that: the inorganic binder packet
Include the raw material of following parts by weight:
Sodium metasilicate or 70 ~ 90 parts of sodium potassium silicate；
Methyl silicate or 0.5 ~ 3 part of methyl-silicone oil or sodium alkyl benzene sulfonate；
Sodium tripolyphosphate or 10 ~ 25 parts of calgon.
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| CN201710224871.5A CN106955966B (en) | 2017-04-07 | 2017-04-07 | A kind of casting inorganic binder and preparation method thereof |
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| CN201710224871.5A CN106955966B (en) | 2017-04-07 | 2017-04-07 | A kind of casting inorganic binder and preparation method thereof |
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| CN106955966B true CN106955966B (en) | 2019-05-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109822040B (en) * | 2017-11-23 | 2020-10-16 | 宁夏共享化工有限公司 | Two-component water hardening warm core box binder |
| CN109014018B (en) * | 2018-09-07 | 2019-12-31 | 太原逸峰源科技有限公司 | Inorganic adhesive and preparation and application methods thereof |
| CN110640078B (en) * | 2019-09-29 | 2021-02-02 | 佛山市高明利钢精密铸造有限公司 | Molding sand binder for casting |
| CN113814347A (en) * | 2020-06-19 | 2021-12-21 | 徐州东鑫铸造有限公司 | Binder for casting and preparation method thereof |
| CN112479529B (en) * | 2020-12-04 | 2023-12-05 | 湖北爱国环保技术开发有限公司 | Dry distillation process for treating oil sludge |
| CN114029446B (en) * | 2021-11-11 | 2024-01-12 | 山东旭光得瑞高新材料股份有限公司 | Wet casting clay molding sand capable of reducing pollution emission and preparation method thereof |
| CN114472796A (en) * | 2022-01-21 | 2022-05-13 | 中国第一汽车股份有限公司 | Modified inorganic binder sand with collapsibility and preparation method thereof |
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|---|---|---|---|---|
| CN1044607A (en) * | 1989-02-05 | 1990-08-15 | 包头市粮食油脂化工厂 | Binder for casting |
| CN102807336A (en) * | 2012-08-27 | 2012-12-05 | 重庆长江造型材料（集团）有限公司 | Silicate inorganic binder for casting and method for preparing silicate inorganic binder for casting |
| CN104475655A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Good plasticity mold core molding sand and preparation method thereof |
| CN104923717A (en) * | 2015-06-04 | 2015-09-23 | 宁夏共享化工有限公司 | Inorganic binder for nonferrous metal 3D sand mould printing and preparation method thereof |
| CN105127360A (en) * | 2014-12-16 | 2015-12-09 | 株式会社帝尔鄂世稳 | Inorganic binder composition for castings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4117514B2 (en) * | 1998-04-02 | 2008-07-16 | 日産自動車株式会社 | template |
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2017
- 2017-04-07 CN CN201710224871.5A patent/CN106955966B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044607A (en) * | 1989-02-05 | 1990-08-15 | 包头市粮食油脂化工厂 | Binder for casting |
| CN102807336A (en) * | 2012-08-27 | 2012-12-05 | 重庆长江造型材料（集团）有限公司 | Silicate inorganic binder for casting and method for preparing silicate inorganic binder for casting |
| CN104475655A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Good plasticity mold core molding sand and preparation method thereof |
| CN105127360A (en) * | 2014-12-16 | 2015-12-09 | 株式会社帝尔鄂世稳 | Inorganic binder composition for castings |
| CN104923717A (en) * | 2015-06-04 | 2015-09-23 | 宁夏共享化工有限公司 | Inorganic binder for nonferrous metal 3D sand mould printing and preparation method thereof |
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