CN104942218A - High-strength molding sand for large steel casting - Google Patents
High-strength molding sand for large steel casting Download PDFInfo
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- CN104942218A CN104942218A CN201510310792.7A CN201510310792A CN104942218A CN 104942218 A CN104942218 A CN 104942218A CN 201510310792 A CN201510310792 A CN 201510310792A CN 104942218 A CN104942218 A CN 104942218A
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- molding sand
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Abstract
The invention discloses high-strength molding sand for a large steel casting. Quartz sand is used as a base material; clay is a main material; an auxiliary material comprises raw materials of vermiculite, dodecylbenzene sulfonic acid, zinc dialkyl dithiophosphate, floating beads, aluminum sesquioxide, hydrogenated rosin and the like; and the product is obtained through steps of crushing, stirring, pelleting, preheating, sintering, grinding and the like. According to the high-strength molding sand, the strength and the heat resistance of molding sand particles are improved; the molding sand can be prevented from caking, and the recycling difficulty is reduced; the surface of the casting is smooth, so that sand shakeout can be avoided easily; at the same time, the preparation technology of the high-strength molding sand is simple and feasible, the product collapsibility is excellent, and the particle size is suitable; and the cohesiveness, the plasticity, the breathability, the mobility and the dispersibility are excellent.
Description
Technical field
The present invention relates to casting field, be specifically related to a kind of Large Steel foundry goods high strength molding sand.
Background technology
The subject matter that current molding sand exists has: 1, particle size difficulty controls, if molding sand particle diameter is too large, although gas permeability is better, cast(ing) surface is more coarse, and fineness is bad; If molding sand material footpath is too little, cause mo ld void bad, foundry goods has pore to produce.2, dispel the heat bad, chill effect is poor, and shrinkage porosite, shrinkage cavity phenomenon easily appear in intricate casting inside.3, dispersed, mobility is bad, easily caking, dusting beans.4, knockout is serious, and scrappage is high.5, special molding sand is lacked for different types of foundry goods.
Conventional clay molding sand mainly exists not easy to be recycled, and poor air permeability, mobility are bad, dispersiveness is bad, collapsibility is poor, it is bad to dispel the heat, environmental pollution is serious shortcoming.
In view of the defect existed in above prior art, be necessary existing apparatus to improve further, make it have more standby practicality, could realistic service condition.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the object of this invention is to provide. a kind of Large Steel foundry goods high strength molding sand.
The present invention takes following technical scheme to realize: a kind of Large Steel foundry goods high strength molding sand, and employing quartz sand is base-material, and clay is major ingredient, and the raw material that auxiliary material comprises following weight portion is prepared from:
Vermiculite 20-40 part, DBSA 5-7 part
Zinc dialkyl dithiophosphate 10-14 part, drift pearl 2-5 part
Alundum (Al2O3) 3-6 part, Foral 1-3 part
Flexibilizer PPB-8101 15-18 part, stabilizing agent RWS 0.01-0.15 part
Coupling agent 0.1-0.3 part, phenolic resins 10-20 part
HoCu
22-4 part,
nucleator 0.1-0.3 part
Cobalt oxide 6-8 part, sodium pyrophosphate 10-14 part
4 bromide 3-4 part, mullite crystal whisker 10-25 part.
The raw material that auxiliary material of the present invention comprises following weight portion is prepared from:
Vermiculite 30 parts, DBSA 6 parts
Zinc dialkyl dithiophosphate 10-14 part, drift 4 parts, pearl
Alundum (Al2O3) 4 parts, Foral 2 parts
Flexibilizer PPB-8101 17 parts, stabilizing agent RWS 0.12 part
Coupling agent 0.15 part, 15 parts, phenolic resins
HoCu
23 parts,
nucleator 0.2 part
Cobalt oxide 7 parts, sodium pyrophosphate 12 parts
4 bromide 3 parts, mullite crystal whisker 15 parts.
Preparation technology of the present invention, it comprises the following steps preparation: pulverizing, stirring, granulation, preheating, sintering, grinding, shaping.
The present invention has following beneficial effect in sum: the present invention adopts quartz sand to be base-material, clay is major ingredient, accessory package is containing vermiculite, DBSA, zinc dialkyl dithiophosphate, drift pearl, alundum (Al2O3), the raw materials such as Foral, add intensity and the heat resistance of molding sand particle, can prevent molding sand from luming, reduce the difficulty reclaimed, cast(ing) surface is smooth, not easily knockout, simultaneously, preparation is simple in the present invention, product collapsibility is good, particle size is suitable, caking property is good, plasticity is good, good permeability, good fluidity, good dispersion etc.
Detailed description of the invention
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the present invention further.
The present invention takes following technical scheme to realize: a kind of Large Steel foundry goods high strength molding sand, and employing quartz sand is base-material, and clay is major ingredient, and the raw material that auxiliary material comprises following weight portion is prepared from:
Vermiculite 20-40 part, DBSA 5-7 part
Zinc dialkyl dithiophosphate 10-14 part, drift pearl 2-5 part
Alundum (Al2O3) 3-6 part, Foral 1-3 part
Flexibilizer PPB-8101 15-18 part, stabilizing agent RWS 0.01-0.15 part
Coupling agent 0.1-0.3 part, phenolic resins 10-20 part
HoCu
22-4 part,
nucleator 0.1-0.3 part
Cobalt oxide 6-8 part, sodium pyrophosphate 10-14 part
4 bromide 3-4 part, mullite crystal whisker 10-25 part.
Preferably, the raw material that auxiliary material of the present invention comprises following weight portion is prepared from:
Vermiculite 30 parts, DBSA 6 parts
Zinc dialkyl dithiophosphate 10-14 part, drift 4 parts, pearl
Alundum (Al2O3) 4 parts, Foral 2 parts
Flexibilizer PPB-8101 17 parts, stabilizing agent RWS 0.12 part
Coupling agent 0.15 part, 15 parts, phenolic resins
HoCu
23 parts,
nucleator 0.2 part
Cobalt oxide 7 parts, sodium pyrophosphate 12 parts
4 bromide 3 parts, mullite crystal whisker 15 parts.
Preferably, preparation technology of the present invention, it comprises the following steps preparation: pulverizing, stirring, granulation, preheating, sintering, grinding, shaping.
The above is embodiments of the invention, therefore all equivalences done according to structure, feature and the principle described in the present patent application scope change or modify, and are included in patent claim of the present invention.
Claims (3)
1. a Large Steel foundry goods high strength molding sand, is characterized in that: employing quartz sand is base-material, and clay is major ingredient, and the raw material that auxiliary material comprises following weight portion is prepared from:
Vermiculite 20-40 part, DBSA 5-7 part
Zinc dialkyl dithiophosphate 10-14 part, drift pearl 2-5 part
Alundum (Al2O3) 3-6 part, Foral 1-3 part
Flexibilizer PPB-8101 15-18 part, stabilizing agent RWS 0.01-0.15 part
Coupling agent 0.1-0.3 part, phenolic resins 10-20 part
HoCu
22-4 part,
nucleator 0.1-0.3 part
Cobalt oxide 6-8 part, sodium pyrophosphate 10-14 part
4 bromide 3-4 part, mullite crystal whisker 10-25 part.
2. a kind of Large Steel foundry goods high strength molding sand according to claim 1, is characterized in that: the raw material that described auxiliary material comprises following weight portion is prepared from:
Vermiculite 30 parts, DBSA 6 parts
Zinc dialkyl dithiophosphate 10-14 part, drift 4 parts, pearl
Alundum (Al2O3) 4 parts, Foral 2 parts
Flexibilizer PPB-8101 17 parts, stabilizing agent RWS 0.12 part
Coupling agent 0.15 part, 15 parts, phenolic resins
HoCu
23 parts,
nucleator 0.2 part
Cobalt oxide 7 parts, sodium pyrophosphate 12 parts
4 bromide 3 parts, mullite crystal whisker 15 parts.
3. a kind of Large Steel foundry goods high strength molding sand preparation technology according to claim 1, is characterized in that: it comprises the following steps preparation: pulverizing, stirring, granulation, preheating, sintering, grinding, shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510310792.7A CN104942218A (en) | 2015-06-09 | 2015-06-09 | High-strength molding sand for large steel casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510310792.7A CN104942218A (en) | 2015-06-09 | 2015-06-09 | High-strength molding sand for large steel casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104942218A true CN104942218A (en) | 2015-09-30 |
Family
ID=54157576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510310792.7A Pending CN104942218A (en) | 2015-06-09 | 2015-06-09 | High-strength molding sand for large steel casting |
Country Status (1)
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| CN (1) | CN104942218A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106349639A (en) * | 2016-08-29 | 2017-01-25 | 广西梧州通轩林产化学有限公司 | Casting phenolic resin and preparation method thereof |
| CN110328326A (en) * | 2019-07-30 | 2019-10-15 | 四川安岳宇良汽车水泵有限公司 | A kind of water pump casting sand conditioning technique |
| CN110523914A (en) * | 2019-09-17 | 2019-12-03 | 含山县荣盛机械铸造有限公司 | A kind of preparation method of high temperature heat-resistant impact casting sand |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060616A (en) * | 1990-09-30 | 1992-04-29 | 国营青岛电站阀门厂 | Moulding sand for casting |
| 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 |
| CN104475643A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Carbon steel cast molding sand and preparation method thereof |
| CN104475642A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-shakeout foundry molding sand and preparation method thereof |
| WO2015058737A2 (en) * | 2013-10-22 | 2015-04-30 | Ask Chemicals Gmbh | Molding material mixtures containing an oxidic boron compound and method for the production of molds and cores |
-
2015
- 2015-06-09 CN CN201510310792.7A patent/CN104942218A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060616A (en) * | 1990-09-30 | 1992-04-29 | 国营青岛电站阀门厂 | Moulding sand for casting |
| 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 |
| WO2015058737A2 (en) * | 2013-10-22 | 2015-04-30 | Ask Chemicals Gmbh | Molding material mixtures containing an oxidic boron compound and method for the production of molds and cores |
| CN104475643A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Carbon steel cast molding sand and preparation method thereof |
| CN104475642A (en) * | 2014-11-03 | 2015-04-01 | 繁昌县琦祥铸造厂 | Anti-shakeout foundry molding sand and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106349639A (en) * | 2016-08-29 | 2017-01-25 | 广西梧州通轩林产化学有限公司 | Casting phenolic resin and preparation method thereof |
| CN110328326A (en) * | 2019-07-30 | 2019-10-15 | 四川安岳宇良汽车水泵有限公司 | A kind of water pump casting sand conditioning technique |
| CN110523914A (en) * | 2019-09-17 | 2019-12-03 | 含山县荣盛机械铸造有限公司 | A kind of preparation method of high temperature heat-resistant impact casting sand |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150930 |