CN105436394A - Heat-resisting and high-breathability composite modified water glass sand used for pump valve casting and manufacturing method of heat-resisting and high-breathability composite modified water glass sand - Google Patents
Heat-resisting and high-breathability composite modified water glass sand used for pump valve casting and manufacturing method of heat-resisting and high-breathability composite modified water glass sand Download PDFInfo
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- CN105436394A CN105436394A CN201510833808.2A CN201510833808A CN105436394A CN 105436394 A CN105436394 A CN 105436394A CN 201510833808 A CN201510833808 A CN 201510833808A CN 105436394 A CN105436394 A CN 105436394A
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- sand
- water glass
- modified water
- powder
- composite modified
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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
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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
- B22C1/02—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
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses heat-resisting and high-breathability composite modified water glass sand used for a pump valve casting. A modified water glass bonding agent in the water glass sand has superior constant-temperature and constant-humidity strength compared with a conventional water glass bonding agent, thixotropy and the rheological property are better, reaction bonding activity is high, environment friendliness is achieved, a good bonding effect can be achieved with few bonding agents, the use amount of water glass is reduced, and scattering cleaning is easier. Added microcrystal ceramic powder has the effects of strengthening, toughening and the like, and smoothness and strength of the surface of molding sand are improved; breathability of the molding sand can be improved through superfine polyving akohol micro powder, and even and micro air holes are formed; molten metal is not likely to permeate; and nanometer calcium fluoride loaded by bentonite is scattered in sand and has the effects of lubricating and strengthening, a non-stick impermeable layer can be formed, and sand sticking of the casting is avoided. The composite modified water glass sand is good in comprehensive performance, good in thermal stability, high in precision and capable of meeting the requirement for pouring of the high-precision pump valve casting.
Description
Technical field
The present invention relates to water-glass sand technical field, particularly relate to composite modified water-glass sand of the heat-resisting highly-breathable 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 heat-resisting highly-breathable 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 heat-resisting highly-breathable, this water-glass sand is prepared by the raw material of following weight portion: 50-100 order corundum sand 50-60,50-100 order wollastonite in powder 30-40,100-150 order micro-crystalline ceramic powder 10-15, graphite powder 1-2, modified water glass bonding agent 1.5-2, calgon 0.2-0.3, micronized polyethylene alcohol powder 0.4-0.5, 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.
Described a kind of pump valve foundry goods by the preparation method of the composite modified water-glass sand of heat-resisting highly-breathable 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 corundum sand, wollastonite in powder, micro-crystalline ceramic powder, graphite powder, micronized polyethylene alcohol powder, after being uniformly mixed 50-60min, 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, a small amount of bonding agent can reach good bond effect, reduce the consumption of waterglass, easier defeated and dispersed cleaning; The micro-crystalline ceramic powder added has enhancing, the effect such as toughness reinforcing, improve fineness and the intensity on molding sand surface, micronized polyethylene alcohol micro mist can improve type sand permeability, form uniform Minute pores, molten metal not easily permeates, nano calcium fluoride through 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, prevents foundry goods scab; This composite modified water-glass sand high comprehensive performance, Heat stability is good, precision 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 corundum sand 50,50 order wollastonite in powder 30,100 order micro-crystalline ceramic powder 10, graphite powder 1, modified water glass bonding agent 1.5, calgon 0.2, micronized polyethylene alcohol powder 0.4, bentonite 2, Choline Chloride 0.1, nano calcium fluoride 0.4,50% ethanol water 8, silane coupler 0.1.
Wherein 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 water-glass 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 corundum sand, wollastonite in powder, micro-crystalline ceramic powder, graphite powder, micronized polyethylene alcohol powder, after being uniformly mixed 50min, 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: 2.35MPa; Compression strength: 4.62MPa; Gas permeability: 78; Hygroscopicity≤1.5%; Retained strength (800 DEG C) 0.26MPa: reclamation rate >=90%.The bright and clean densification of the foundry goods obtained, yield rate reaches more than 95%.
Claims (3)
1. the pump valve foundry goods composite modified water-glass sand of heat-resisting highly-breathable, it is characterized in that, this water-glass sand is prepared by the raw material of following weight portion: 50-100 order corundum sand 50-60,50-100 order wollastonite in powder 30-40,100-150 order micro-crystalline ceramic powder 10-15, graphite powder 1-2, modified water glass bonding agent 1.5-2, calgon 0.2-0.3, micronized polyethylene alcohol powder 0.4-0.5, 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 heat-resisting highly-breathable 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 heat-resisting highly-breathable 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 corundum sand, wollastonite in powder, micro-crystalline ceramic powder, graphite powder, micronized polyethylene alcohol powder, after being uniformly mixed 50-60min, 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510833808.2A CN105436394A (en) | 2015-11-25 | 2015-11-25 | Heat-resisting and high-breathability composite modified water glass sand used for pump valve casting and manufacturing method of heat-resisting and high-breathability composite modified water glass sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510833808.2A CN105436394A (en) | 2015-11-25 | 2015-11-25 | Heat-resisting and high-breathability composite modified water glass sand used for pump valve casting and manufacturing method of heat-resisting and high-breathability composite modified water glass sand |
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| CN105436394A true CN105436394A (en) | 2016-03-30 |
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| CN201510833808.2A Pending CN105436394A (en) | 2015-11-25 | 2015-11-25 | Heat-resisting and high-breathability composite modified water glass sand used for pump valve casting and manufacturing method of heat-resisting and high-breathability composite modified water glass sand |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679105A (en) * | 2020-12-29 | 2021-04-20 | 苏州德达材料科技有限公司 | Water-based glass color jade sand material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870562A (en) * | 2010-06-30 | 2010-10-27 | 泰州枫叶冶金设备有限公司 | Precision casting waste sand reusing method |
| 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 |
| CN103521692A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Molding sand for casting aluminum and preparation method thereof |
| CN103586399A (en) * | 2013-10-16 | 2014-02-19 | 昌利锻造有限公司 | Molding sand capable of quick air permeation and heat dissipation 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
- 2015-11-25 CN CN201510833808.2A patent/CN105436394A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101870562A (en) * | 2010-06-30 | 2010-10-27 | 泰州枫叶冶金设备有限公司 | Precision casting waste sand reusing method |
| CN103521692A (en) * | 2013-10-16 | 2014-01-22 | 合肥市田源精铸有限公司 | Molding sand for casting aluminum and preparation method thereof |
| CN103586399A (en) * | 2013-10-16 | 2014-02-19 | 昌利锻造有限公司 | Molding sand capable of quick air permeation and heat dissipation 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 (3)
| Title |
|---|
| 李远才、董选普: "《铸造造型材料实用手册》", 30 June 2015 * |
| 樊自田，等: "《铸造质量控制应用技术》", 30 April 2009 * |
| 陈琦，彭兆弟: "《铸造质量检验手册 第2版》", 30 April 2014 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679105A (en) * | 2020-12-29 | 2021-04-20 | 苏州德达材料科技有限公司 | Water-based glass color jade sand material and preparation method thereof |
| CN112679105B (en) * | 2020-12-29 | 2022-03-15 | 苏州德达材料科技有限公司 | Water-based glass color jade sand material and preparation method thereof |
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Application publication date: 20160330 |
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