CN105414459A - High-thermal-conductivity composite modified sodium silicate sand for pump valve castings, and preparation method thereof - Google Patents
High-thermal-conductivity composite modified sodium silicate sand for pump valve castings, and preparation method thereof Download PDFInfo
- Publication number
- CN105414459A CN105414459A CN201510816162.7A CN201510816162A CN105414459A CN 105414459 A CN105414459 A CN 105414459A CN 201510816162 A CN201510816162 A CN 201510816162A CN 105414459 A CN105414459 A CN 105414459A
- Authority
- CN
- China
- Prior art keywords
- sand
- sodium silicate
- uniformly mixed
- pump valve
- castings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B22C1/02—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
- B22C1/18—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 high-thermal-conductivity composite modified sodium silicate sand for pump valve castings. A modified sodium silicate binder in the sodium silicate sand is higher in constant-temperature wet strength, thixotropy and rheological property compared with a conventional modified sodium silicate binder, high in reaction binding activity, and green and environment-friendly, and the dosage of sodium silicate is lower; in addition, beryllium oxide in raw materials is capable of effectively improving the thermal conductivity of moulding sand, and preventing sand inclusion of the castings, and bentonite-supported nano-calcium fluoride has lubrication and reinforcement effects in case of being dispersed in sand materials, and capable of forming a non-stick impermeable layer, preventing sand sticking of the castings, and improving the surface quality of the castings; and the composite modified sodium silicate sand is excellent in comprehensive performance, uniform in strength, high in casting quality, and capable of meeting the pouring requirements of the high-accuracy pump valve castings.
Description
Technical field
The present invention relates to water-glass sand technical field, particularly relate to composite modified water-glass sand of the high heat conduction of a kind of pump valve foundry goods and preparation method thereof.
Background technology
Molding sand is mainly used for the material of moulding in casting according to the class that different ratios is mixed by sand material, bonding agent and adminicle etc., different according to the bonding agent used, clay-bonded sand, water-glass sand, resin sand etc. can be divided into, wherein water-glass sand has that intensity is high, cost is low, technique is simple, pollute the advantages such as little, is widely used.
Pump, valve foundry goods have the features such as wall is thin, complex-shaped, particularly strict to the quality requirement of molding sand in casting process, the quality of molding sand is also the key factor being related to casting quality, although there is significant advantage in sodium silicate sand, also there is a lot of shortcoming simultaneously, obvious defect is mainly manifested in that normal temperature strength is low, collapsibility is poor, regenerating used is difficult, if do not carried out modification to it, is difficult to the quality improving pump valve foundry goods.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides composite modified water-glass sand of the high heat conduction of a kind of pump valve foundry goods and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of pump valve foundry goods composite modified water-glass sand of high heat conduction, this water-glass sand is prepared by the raw material of following weight portion: 50-80 order clinker of kaolin 30-40,80-120 order electro-corundum sand 30-40, beryllium oxide 10-15, hydroxyapatite 1-1.5, graphite powder 1-2, modified water glass bonding agent 1.5-2, bentonite 2-3, Choline Chloride 0.1-0.2, nano calcium fluoride 0.4-0.5,50% ethanol water 8-10, silane coupler 0.1-0.2.
Described modified water glass bonding agent is made up of the raw material of following weight portion: the waterglass 12-15 of 40-50 Baume degrees, aluminium-magnesium silicate 0.1-0.2, bacteria cellulose 2-3, quaternary ammonium salt ionic liquid 6-8; Its modification method for preparing is: first drop in quaternary ammonium salt ionic liquid by bacteria cellulose, be heated to 40-50 DEG C, be uniformly mixed 2-3h, adds other leftover materials subsequently, continues to be uniformly mixed 40-50min, to obtain final product.
The preparation method of described modified sodium silicate sand is:
(1) first nano calcium fluoride, silane coupler are added in ethanol water, ultrasonic agitation dispersion 40-50min, obtain nano calcium fluoride dispersion liquid for subsequent use, add bentonite subsequently, be uniformly mixed 2-3h, stir and after terminating, mixed material is poured in evaporimeter, dry process in 70-80 DEG C of environment, completely except desolventizing, subsequently that gains abrasive lapping is broken, obtain 100-200 order powder for subsequent use;
(2) batch mixing is carried out according to the material taking sequence of clinker of kaolin, electro-corundum sand, beryllium oxide, hydroxyapatite, graphite powder, after being uniformly mixed 40-50min, add step (1) gained material, continue to be uniformly mixed 30-40min, finally add modified water glass bonding agent and other leftover materials again, shake out after being blown into carbon dioxide solidification after being uniformly mixed and get final product.
Modified water glass bonding agent prepared by the present invention has more excellent normal temperature wet strength than the modified water glass bonding agent of routine, thixotropy and rheological characteristic better, reaction bonded activity is high, and environmental protection, waterglass consumption is less, in addition, beryllium oxide in raw material effectively can improve the thermal conductivity of molding sand, prevent foundry goods burning into sand, and the nano calcium fluoride of alta-mud load is scattered in the effect having lubrication, enhancing in sand material, and can be formed and be not stained with impervious barrier, prevent foundry goods scab, improve the surface quality of foundry goods; This composite modified water-glass sand high comprehensive performance, even intensity, casting quality is high, can meet the cast requirement of high accuracy pump valve foundry goods.
Detailed description of the invention
This embodiment water-glass sand is prepared by the raw material of following weight portion: 50 order clinker of kaolin 30,80 order electro-corundum sand 30, beryllium oxide 10, hydroxyapatite 1, graphite powder 1, modified water glass bonding agent 1.5, bentonite 2, Choline Chloride 0.1, nano calcium fluoride 0.4,50% ethanol water 8, silane coupler 0.1.
Modified water glass bonding agent is made up of the raw material of following weight portion: the waterglass 12 of 40 Baume degrees, aluminium-magnesium silicate 0.1, bacteria cellulose 2, quaternary ammonium salt ionic liquid 6; Its modification method for preparing is: first drop in quaternary ammonium salt ionic liquid by bacteria cellulose, is heated to 40 DEG C, is uniformly mixed 2h, adds other leftover materials subsequently, continues to be uniformly mixed 40min, to obtain final product.
The preparation method of this modified sodium silicate sand is:
(1) first nano calcium fluoride, silane coupler are added in ethanol water, ultrasonic agitation dispersion 40min, obtain nano calcium fluoride dispersion liquid for subsequent use, add bentonite subsequently, be uniformly mixed 2h, stir and after terminating, mixed material is poured in evaporimeter, dry process in 70 DEG C of environment, completely except desolventizing, subsequently that gains abrasive lapping is broken, obtain 100 order powders for subsequent use;
(2) batch mixing is carried out according to the material taking sequence of clinker of kaolin, electro-corundum sand, beryllium oxide, hydroxyapatite, graphite powder, after being uniformly mixed 40min, add step (1) gained material, continue to be uniformly mixed 30min, finally add modified water glass bonding agent and other leftover materials again, shake out after being blown into carbon dioxide solidification after being uniformly mixed and get final product.
The present embodiment sand conditioning become the cylindrical sample of φ 50 × 50mm to carry out the performance test results to be:
Tensile strength: 2.45MPa; Compression strength: 4.45MPa; Gas permeability: 58; Hygroscopicity≤1.2%; Retained strength (800 DEG C) 0.32MPa: reclamation rate >=85%.The bright and clean flawless of the cast(ing) surface obtained, size is accurate, and yield rate reaches more than 95%.
Claims (3)
1. the pump valve foundry goods composite modified water-glass sand of high heat conduction, it is characterized in that, this water-glass sand is prepared by the raw material of following weight portion: 50-80 order clinker of kaolin 30-40,80-120 order electro-corundum sand 30-40, beryllium oxide 10-15, hydroxyapatite 1-1.5, graphite powder 1-2, modified water glass bonding agent 1.5-2, bentonite 2-3, Choline Chloride 0.1-0.2, nano calcium fluoride 0.4-0.5,50% ethanol water 8-10, silane coupler 0.1-0.2.
2. a kind of pump valve foundry goods composite modified water-glass sand of high heat conduction as claimed in claim 1, it is characterized in that, described modified water glass bonding agent is made up of the raw material of following weight portion: the waterglass 12-15 of 40-50 Baume degrees, aluminium-magnesium silicate 0.1-0.2, bacteria cellulose 2-3, quaternary ammonium salt ionic liquid 6-8; Its modification method for preparing is: first drop in quaternary ammonium salt ionic liquid by bacteria cellulose, be heated to 40-50 DEG C, be uniformly mixed 2-3h, adds other leftover materials subsequently, continues to be uniformly mixed 40-50min, to obtain final product.
3. a kind of pump valve foundry goods preparation method of the composite modified water-glass sand of high heat conduction as claimed in claim 1, it is characterized in that, described preparation method is:
(1) first nano calcium fluoride, silane coupler are added in ethanol water, ultrasonic agitation dispersion 40-50min, obtain nano calcium fluoride dispersion liquid for subsequent use, add bentonite subsequently, be uniformly mixed 2-3h, stir and after terminating, mixed material is poured in evaporimeter, dry process in 70-80 DEG C of environment, completely except desolventizing, subsequently that gains abrasive lapping is broken, obtain 100-200 order powder for subsequent use;
(2) batch mixing is carried out according to the material taking sequence of clinker of kaolin, electro-corundum sand, beryllium oxide, hydroxyapatite, graphite powder, after being uniformly mixed 40-50min, add step (1) gained material, continue to be uniformly mixed 30-40min, finally add modified water glass bonding agent and other leftover materials again, shake out after being blown into carbon dioxide solidification after being uniformly mixed and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510816162.7A CN105414459A (en) | 2015-11-23 | 2015-11-23 | High-thermal-conductivity composite modified sodium silicate sand for pump valve castings, and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510816162.7A CN105414459A (en) | 2015-11-23 | 2015-11-23 | High-thermal-conductivity composite modified sodium silicate sand for pump valve castings, and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105414459A true CN105414459A (en) | 2016-03-23 |
Family
ID=55493243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510816162.7A Pending CN105414459A (en) | 2015-11-23 | 2015-11-23 | High-thermal-conductivity composite modified sodium silicate sand for pump valve castings, and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105414459A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040959A (en) * | 2016-07-29 | 2016-10-26 | 无锡市三峰仪器设备有限公司 | Novel instrument casting precoated sand |
| CN106077423A (en) * | 2016-07-29 | 2016-11-09 | 无锡市三峰仪器设备有限公司 | A kind of instrument Foundry Coated Sand of anti-sintering |
| CN106853505A (en) * | 2017-01-09 | 2017-06-16 | 河南金耐源新材料科技有限公司 | The casting method that ceramic sand inorganic binder and ceramic sand are recycled |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397197A (en) * | 2007-09-24 | 2009-04-01 | 中煤张家口煤矿机械有限责任公司 | Method for producing modified sodium silicate sand |
| CN101885035A (en) * | 2010-06-23 | 2010-11-17 | 深圳市景鼎现代科技有限公司 | Formula of water glass modifying additive and production process and using method thereof |
| CN103567355A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Organic ester sodium silicate self-hardening sand and preparation method 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 |
| CN104259380A (en) * | 2014-10-25 | 2015-01-07 | 哈尔滨理工大学 | Composite modified water glass sand with high collapsibility and preparation method thereof |
-
2015
- 2015-11-23 CN CN201510816162.7A patent/CN105414459A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397197A (en) * | 2007-09-24 | 2009-04-01 | 中煤张家口煤矿机械有限责任公司 | Method for producing modified sodium silicate sand |
| CN101885035A (en) * | 2010-06-23 | 2010-11-17 | 深圳市景鼎现代科技有限公司 | Formula of water glass modifying additive and production process and using method thereof |
| CN103567355A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Organic ester sodium silicate self-hardening sand and preparation method 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 |
| CN104259380A (en) * | 2014-10-25 | 2015-01-07 | 哈尔滨理工大学 | Composite modified water glass sand with high collapsibility and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王继娜等: "典型方法和材料对水玻璃的改性效果与机制", 《铸造技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040959A (en) * | 2016-07-29 | 2016-10-26 | 无锡市三峰仪器设备有限公司 | Novel instrument casting precoated sand |
| CN106077423A (en) * | 2016-07-29 | 2016-11-09 | 无锡市三峰仪器设备有限公司 | A kind of instrument Foundry Coated Sand of anti-sintering |
| CN106853505A (en) * | 2017-01-09 | 2017-06-16 | 河南金耐源新材料科技有限公司 | The casting method that ceramic sand inorganic binder and ceramic sand are recycled |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105414461A (en) | High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand | |
| CN102000777B (en) | Core sand mixing process, heated core box core-making process and sand core prepared therefrom | |
| CN101704062B (en) | Magnesium aluminium spinel powder alcohol-based coating for heavy section steel castings and preparation method thereof | |
| CN104801656A (en) | Highly fire-resistant foundry sand for steel casting and preparation method of highly fire-resistant foundry sand | |
| CN105414459A (en) | High-thermal-conductivity composite modified sodium silicate sand for pump valve castings, and preparation method thereof | |
| CN104107875A (en) | Furan resin self-hardening sand and preparation method thereof | |
| CN103111585B (en) | A kind of preparation technology of magnesium alloy cast ceramics gypsum composite mould | |
| CN103495693A (en) | High-temperature-resisting easy collapse molding sand and preparation method thereof | |
| CN104014714B (en) | A kind of aluminum alloy cast moulding sand | |
| CN103658508A (en) | Cast steel lost foam coating formula | |
| CN105499480A (en) | High-collapsibility ceramic mould core and preparation method thereof | |
| CN102921885A (en) | Sand casting technology for titanium, zirconium and nickel and alloy casting thereof | |
| CN105537503A (en) | Sand burning preventive precoated sand for casting of turbine casing | |
| CN102847871A (en) | Lost foam paint and preparation method thereof | |
| CN105414469A (en) | Easily-demolding composite modified sodium silicate sand used for pump valve casting and preparing method thereof | |
| CN105414468A (en) | High-permeability composite modified sodium silicate-bonded sand easy to strip for pump valve castings and preparation method of high-permeability composite modified sodium silicate-bonded sand | |
| CN101941046A (en) | Composite sodium silicate binder for sand mold and preparing method thereof | |
| CN105414460A (en) | High-pouring-precision composite modified sodium silicate-bonded sand for pump valve casting and preparation method thereof | |
| CN105414465A (en) | High-activity composite modified sodium silicate sand for pump valve castings, and preparation method thereof | |
| CN103521692A (en) | Molding sand for casting aluminum and preparation method thereof | |
| CN103521696A (en) | Molding sand for pressure plate casting and preparation method of molding sand | |
| CN105414470A (en) | Enhanced type composite modified sodium silicate sand for pump valve casting and preparing method thereof | |
| CN105414458A (en) | High-compressive-strength composite modified sodium silicate sand for pump valve castings, and preparation method thereof | |
| CN103521682A (en) | Molding sand used for special casting mould surface and preparation method thereof | |
| CN108772533A (en) | A kind of high-strength high temperature-resistant 3D printing clay green-sand material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |