CN104772426A - High temperature-resistant precoated sand - Google Patents
High temperature-resistant precoated sand Download PDFInfo
- Publication number
- CN104772426A CN104772426A CN201410023542.0A CN201410023542A CN104772426A CN 104772426 A CN104772426 A CN 104772426A CN 201410023542 A CN201410023542 A CN 201410023542A CN 104772426 A CN104772426 A CN 104772426A
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- consumption
- sand
- resistant
- precoated sand
- elevated temperatures
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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
Abstract
The invention belongs to the technical field of casting and relates to high temperature-resistant precoated sand. The high temperature-resistant precoated sand comprises raw sand, a binder, a curing agent, a coupling agent, a lubricant and fireproof particulates. A use amount ratio of the curing agent to the binder is 40-45%, a use amount ratio of the coupling agent to the binder is 7-8%, a use amount ratio of the binder to the raw sand is 9-10%, a use amount ratio of the lubricant to the raw sand is 3-5% and a use amount ratio of the fireproof particulates to the raw sand is 15-18%. Through use of the fireproof particulates in the precoated sand, integral fireproof endurance and structure stability of the precoated sand are improved. A preparation method of the fireproof particulates has simple processes, can be operated easily and has a low manufacturing cost.
Description
Technical field
The invention belongs to cover and touch sand technical field, be specifically related to a kind of resistant to elevated temperatures precoated sand.
Background technology
Precoated sand is covered with one deck hard resin film, for making molding sand or the core sand of cast steel or cast iron die before referring to moulding on sand grain surface.Make precoated sand and have cold process and Re Fa two kinds of techniques, cold process ethanol by resin dissolves, and adds methenamine in mulling process, makes the two be coated on sand grain surface, and ethanol volatilizees, obtained precoated sand; Hot method is preheating to uniform temperature sand, adds resin and makes its melting, stirs and makes resin-coating at sand grain surface, add the methenamine aqueous solution and lubricant, cooling, broken, sieve to obtain precoated sand.
Because precoated sand has that intensity is high, gas forming amount is low, production casting dimension accuracy is high, any surface finish, is convenient to the advantages such as preservation, apply increasingly extensive in recent years, but current precoated sand heat resistance is poor, easily break when being embodied in the foundry goods of cast structure more complicated, especially more easily break when casting thin-section casting, material degrees of coordination is poor.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above and a kind of resistant to elevated temperatures precoated sand is provided.
For achieving the above object, the present invention adopts following technical scheme:
A kind of resistant to elevated temperatures precoated sand, comprise roughing sand, binding agent, curing agent, coupling agent, lubricant and fiame-retardant particles, the consumption of described curing agent is the 40-45% of consumption of binder, the consumption of coupling agent is the 7-8% of consumption of binder, the consumption of binding agent is the 9-10% of roughing sand consumption, the consumption of lubricant is the 3-5% of roughing sand consumption, and the consumption of fiame-retardant particles is the 15-18% of roughing sand consumption.
The described granularity stating fiame-retardant particles is 200-300 order.
Described fiame-retardant particles is the mixture of clay, silica flour, graphite powder, magnesia powder, ZrO2 powder, refractory fibre.
The weight part ratio 15: 50: 5: 12: 10: 8 of described clay, silica flour, graphite powder, magnesia powder, ZrO2 powder, refractory fibre
Described roughing sand is one or more in silica sand, magnesia, zircon sand, chromite sand, emergy.
Described curing agent is hexa.
Described coupling agent is silane coupler.
Described lubricant is calcium stearate.
The present invention, by adding fiame-retardant particles in precoated sand, improves the fire-resistant persistence of entirety and the self structure stability of precoated sand, and the preparing process of fiame-retardant particles is simple, be easy to operation, and manufacturing cost is lower.
Detailed description of the invention
Below, in conjunction with example, substantive distinguishing features of the present invention and advantage are further described, but the present invention is not limited to listed embodiment.
Embodiment 1
A kind of resistant to elevated temperatures precoated sand, comprise roughing sand, binding agent, curing agent, coupling agent, lubricant and fiame-retardant particles, the consumption of described curing agent is 40% of consumption of binder, the consumption of coupling agent is 7% of consumption of binder, the consumption of binding agent is 9% of roughing sand consumption, the consumption of lubricant is 3% of roughing sand consumption, the consumption of 200 order fiame-retardant particles is 15% of roughing sand consumption, clay in described fiame-retardant particles, silica flour, graphite powder, magnesia powder, ZrO2 powder, the weight part ratio 15: 50: 5: 12: 10: 8 of refractory fibre, described roughing sand is silica sand, described curing agent is hexa, described coupling agent is silane coupler, described lubricant is calcium stearate.
Embodiment 2
A kind of resistant to elevated temperatures precoated sand, comprise roughing sand, binding agent, curing agent, coupling agent, lubricant and fiame-retardant particles, the consumption of described curing agent is 43% of consumption of binder, the consumption of coupling agent is 7.5% of consumption of binder, the consumption of binding agent is 9.6% of roughing sand consumption, the consumption of lubricant is 4% of roughing sand consumption, the consumption of 250 order fiame-retardant particles is 16% of roughing sand consumption, clay in described fiame-retardant particles, silica flour, graphite powder, magnesia powder, ZrO2 powder, the weight part ratio 15: 50: 5: 12: 10: 8 of refractory fibre, described roughing sand is magnesia, described curing agent is hexa, described coupling agent is silane coupler, described lubricant is calcium stearate.
Embodiment 3
A kind of resistant to elevated temperatures precoated sand, comprise roughing sand, binding agent, curing agent, coupling agent, lubricant and fiame-retardant particles, it is characterized in that, the consumption of described curing agent is 45% of consumption of binder, the consumption of coupling agent is 8% of consumption of binder, the consumption of binding agent is 10% of roughing sand consumption, the consumption of lubricant is 5% of roughing sand consumption, the consumption of fiame-retardant particles is 18% of roughing sand consumption, clay in described fiame-retardant particles, silica flour, graphite powder, magnesia powder, ZrO2 powder, the weight part ratio 15: 50: 5: 12: 10: 8 of refractory fibre, described roughing sand is emergy, described curing agent is hexa, described coupling agent is silane coupler, described lubricant is calcium stearate.
Practice is passed through through the precoated sand prepared by embodiment 1-3, all embody stronger heat-resisting quantity, not easily break during the foundry goods of particularly cast structure more complicated, after tested, the rupture rate of embodiment 1 is only 1.5%, the rupture rate of embodiment 2 is 2%, and the rupture rate of embodiment 1 is only 1%, all has lower rupture rate.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a resistant to elevated temperatures precoated sand, comprise roughing sand, binding agent, curing agent, coupling agent, lubricant and fiame-retardant particles, it is characterized in that, the consumption of described curing agent is the 40-45% of consumption of binder, the consumption of coupling agent is the 7-8% of consumption of binder, the consumption of binding agent is the 9-10% of roughing sand consumption, and the consumption of lubricant is the 3-5% of roughing sand consumption, and the consumption of fiame-retardant particles is the 15-18% of roughing sand consumption.
2. resistant to elevated temperatures precoated sand according to claim 1, it is characterized in that, the granularity of described fiame-retardant particles is 200-300 order.
3. resistant to elevated temperatures precoated sand according to claim 2, it is characterized in that, described fiame-retardant particles is the mixture of clay, silica flour, graphite powder, magnesia powder, ZrO2 powder, refractory fibre.
4. resistant to elevated temperatures precoated sand according to claim 3, is characterized in that, the weight part ratio 15: 50: 5: 12: 10: 8 of described clay, silica flour, graphite powder, magnesia powder, ZrO2 powder, refractory fibre.
5. resistant to elevated temperatures precoated sand according to claim 1, it is characterized in that, described roughing sand is one or more in silica sand, magnesia, zircon sand, chromite sand, emergy.
6. resistant to elevated temperatures precoated sand according to claim 1, it is characterized in that, described curing agent is hexa.
7. resistant to elevated temperatures precoated sand according to claim 1, it is characterized in that, described coupling agent is silane coupler.
8. resistant to elevated temperatures precoated sand according to claim 1, it is characterized in that, described lubricant is calcium stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410023542.0A CN104772426A (en) | 2014-01-15 | 2014-01-15 | High temperature-resistant precoated sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410023542.0A CN104772426A (en) | 2014-01-15 | 2014-01-15 | High temperature-resistant precoated sand |
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| Publication Number | Publication Date |
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| CN104772426A true CN104772426A (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410023542.0A Pending CN104772426A (en) | 2014-01-15 | 2014-01-15 | High temperature-resistant precoated sand |
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| CN (1) | CN104772426A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234342A (en) * | 2015-11-17 | 2016-01-13 | 彰武联信金莹铸造材料有限公司 | High-temperature-resistance and high-strength precoated sand and preparation method thereof |
| CN105537503A (en) * | 2016-02-29 | 2016-05-04 | 无锡烨隆精密机械有限公司 | Sand burning preventive precoated sand for casting of turbine casing |
| CN105945206A (en) * | 2016-05-23 | 2016-09-21 | 无锡市嘉邦电力管道厂 | High-temperature resistant precoated sand |
| CN106001387A (en) * | 2016-06-07 | 2016-10-12 | 含山县朝霞铸造有限公司 | Sand core material for copper part casting and preparation method of sand core material |
| 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 |
| CN106077424A (en) * | 2016-07-29 | 2016-11-09 | 无锡市三峰仪器设备有限公司 | A kind of new instrument casting resin sand |
| CN106238667A (en) * | 2016-07-29 | 2016-12-21 | 无锡市三峰仪器设备有限公司 | A kind of precoated sand of instrument casting |
| CN107096868A (en) * | 2017-05-03 | 2017-08-29 | 西安工程大学 | A kind of high fire resistance precoated sand of highly-breathable and preparation method thereof |
| CN107262662A (en) * | 2017-06-15 | 2017-10-20 | 柳州市柳晶科技股份有限公司 | A kind of thermostable cast steel precoated sand |
| CN107327836A (en) * | 2017-06-28 | 2017-11-07 | 上海炳晟机电科技有限公司 | A kind of water conservancy diversion alloy sheets of process precoated sand processing |
| CN107552720A (en) * | 2017-09-06 | 2018-01-09 | 盐城仁创砂业科技有限公司 | A kind of steel-casting precoated sand, its preparation method and anti-agglutinatting property detection method |
| CN107913974A (en) * | 2017-12-06 | 2018-04-17 | 北京仁创砂业科技有限公司 | A kind of steel-casting precoated sand and preparation method thereof |
| CN108296413A (en) * | 2017-08-25 | 2018-07-20 | 柳州市柳晶科技股份有限公司 | A kind of heat resisting film-coating sand and preparation method thereof |
| CN108296414A (en) * | 2017-09-27 | 2018-07-20 | 柳州市柳晶科技股份有限公司 | A kind of high temperature resistant 3D printing precoated sand |
| CN108907067A (en) * | 2018-07-20 | 2018-11-30 | 南阳仁创砂业科技有限公司 | Haydite precoated sand and preparation method thereof |
| CN108971417A (en) * | 2018-10-08 | 2018-12-11 | 南阳仁创砂业科技有限公司 | A kind of precoated sand and preparation method thereof of steel-casting chill |
| CN109332576A (en) * | 2018-12-24 | 2019-02-15 | 北京仁创砂业科技有限公司 | A kind of casting high silicon precoated sand of high temperature resistant and preparation method thereof |
| CN109732037A (en) * | 2019-03-04 | 2019-05-10 | 苏州轻金三维科技有限公司 | A kind of 3 D-printing molding sand and preparation method thereof |
-
2014
- 2014-01-15 CN CN201410023542.0A patent/CN104772426A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234342B (en) * | 2015-11-17 | 2018-01-23 | 彰武联信金莹铸造材料有限公司 | A kind of high temperature resistance and high strength precoated sand and preparation method thereof |
| CN105234342A (en) * | 2015-11-17 | 2016-01-13 | 彰武联信金莹铸造材料有限公司 | High-temperature-resistance and high-strength precoated sand and preparation method thereof |
| CN105537503A (en) * | 2016-02-29 | 2016-05-04 | 无锡烨隆精密机械有限公司 | Sand burning preventive precoated sand for casting of turbine casing |
| CN105945206A (en) * | 2016-05-23 | 2016-09-21 | 无锡市嘉邦电力管道厂 | High-temperature resistant precoated sand |
| CN105945206B (en) * | 2016-05-23 | 2019-01-22 | 无锡市嘉邦电力管道厂 | A kind of precoated sand resistant to high temperature |
| CN106001387B (en) * | 2016-06-07 | 2017-10-27 | 含山县朝霞铸造有限公司 | A kind of copper piece foundry sand core material and preparation method thereof |
| CN106001387A (en) * | 2016-06-07 | 2016-10-12 | 含山县朝霞铸造有限公司 | Sand core material for copper part casting and preparation method of sand core material |
| CN106238667A (en) * | 2016-07-29 | 2016-12-21 | 无锡市三峰仪器设备有限公司 | A kind of precoated sand of instrument casting |
| 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 |
| CN106077424A (en) * | 2016-07-29 | 2016-11-09 | 无锡市三峰仪器设备有限公司 | A kind of new instrument casting resin sand |
| CN107096868A (en) * | 2017-05-03 | 2017-08-29 | 西安工程大学 | A kind of high fire resistance precoated sand of highly-breathable and preparation method thereof |
| CN107262662A (en) * | 2017-06-15 | 2017-10-20 | 柳州市柳晶科技股份有限公司 | A kind of thermostable cast steel precoated sand |
| CN107262662B (en) * | 2017-06-15 | 2020-01-21 | 柳州市柳晶科技股份有限公司 | Super high temperature resistant cast steel precoated sand |
| CN107327836A (en) * | 2017-06-28 | 2017-11-07 | 上海炳晟机电科技有限公司 | A kind of water conservancy diversion alloy sheets of process precoated sand processing |
| CN107327836B (en) * | 2017-06-28 | 2019-01-18 | 上海炳晟机电科技有限公司 | A kind of water conservancy diversion alloy sheets handled by precoated sand |
| CN108296413A (en) * | 2017-08-25 | 2018-07-20 | 柳州市柳晶科技股份有限公司 | A kind of heat resisting film-coating sand and preparation method thereof |
| CN108296413B (en) * | 2017-08-25 | 2019-11-05 | 柳州柳晶环保科技有限公司 | A kind of heat resisting film-coating sand and preparation method thereof |
| CN107552720B (en) * | 2017-09-06 | 2019-05-24 | 盐城仁创砂业科技有限公司 | A kind of anti-agglutinatting property detection method of steel-casting precoated sand |
| CN107552720A (en) * | 2017-09-06 | 2018-01-09 | 盐城仁创砂业科技有限公司 | A kind of steel-casting precoated sand, its preparation method and anti-agglutinatting property detection method |
| CN108296414A (en) * | 2017-09-27 | 2018-07-20 | 柳州市柳晶科技股份有限公司 | A kind of high temperature resistant 3D printing precoated sand |
| CN107913974A (en) * | 2017-12-06 | 2018-04-17 | 北京仁创砂业科技有限公司 | A kind of steel-casting precoated sand and preparation method thereof |
| CN108907067A (en) * | 2018-07-20 | 2018-11-30 | 南阳仁创砂业科技有限公司 | Haydite precoated sand and preparation method thereof |
| CN108971417A (en) * | 2018-10-08 | 2018-12-11 | 南阳仁创砂业科技有限公司 | A kind of precoated sand and preparation method thereof of steel-casting chill |
| CN109332576A (en) * | 2018-12-24 | 2019-02-15 | 北京仁创砂业科技有限公司 | A kind of casting high silicon precoated sand of high temperature resistant and preparation method thereof |
| CN109732037A (en) * | 2019-03-04 | 2019-05-10 | 苏州轻金三维科技有限公司 | A kind of 3 D-printing molding sand and preparation method thereof |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150715 |