CN108526386A - Spherical silica sand and ceramic sand compound film laminating sand and preparation method thereof - Google Patents
Spherical silica sand and ceramic sand compound film laminating sand and preparation method thereof Download PDFInfo
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- CN108526386A CN108526386A CN201810438873.9A CN201810438873A CN108526386A CN 108526386 A CN108526386 A CN 108526386A CN 201810438873 A CN201810438873 A CN 201810438873A CN 108526386 A CN108526386 A CN 108526386A
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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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Abstract
The invention discloses spherical silica sands and ceramic sand compound film laminating sand, are prepared from the following components：The common silica sand of 70/140 mesh, 70/140 mesh spherical shape silica sand, 50/100 mesh ceramsite sand, 50/100 mesh ferroso-ferric oxide sand, phenolic resin, hexamethylenetetramine, calcium stearate, water.The present invention discloses a kind of preparation methods of spherical silica sand and ceramic sand compound film laminating sand, include the following steps：1) it is added heating furnace after 3 5% iron sand, 10% 20% spherical silica sands, 10% ceramsite sand, 65 77% silica sands being mixed in proportion by weight percentage, heating temperature is put into sand mixer to after 110 DEG C 150 DEG C；2) resin of 1.2% 1.8% ratio of weight percent, 70 120S of mixed grind is added；3) the hexamethylenetetramine aqueous solution of weight percent 1%, 100 150S of mixed grind is added；4) calcium stearate of weight percent 1 ‰ is added, mixed grind 30S, preparing becomes precoated sand.Spherical shape silica sand of the invention can reduce casting pouring in the process because of the thermal fragmentation defect of sand core high-temperature behavior difference output with ceramic sand compound film laminating sand.
Description
Technical field
The invention belongs to precoated sand casting technology field, more particularly to a kind of spherical silica sand and ceramic sand compound film laminating sand and
Preparation method.
Background technology
With being constantly progressive for engine technology, current turbine increase technology is very universal, the core as turbocharger
The turbocharger housing of one of heart parts, technology require it is also very high, the heat safe material of generally use it is for example nickelic or
Person's heat resisting steel material, the pouring temperature of these materials is often higher, therefore also very high to the performance requirement of sand core, while these
Shell is often complicated, local thinnest part up to 2-3mm, therefore good precoated sand performance have to the quality of product it is very heavy
The influence wanted.
For the prior art because the silica sand of precoated sand raw material does not pass through other pretreatments, the dihedral coefficient of sand is inclined
Height, roundness is poor, and the coefficient of thermal expansion of phase transformation output is higher under high temperature, and being easy output hot tearing in casting process leads to casting report
It is useless.
The present invention researches and develops regarding to the issue above, solves the thermal fragmentation defect that sand core generates in casting process.
Invention content：
The technical problem to be solved by the present invention is to improve sand core elevated temperature strength, high-temperature phase-change is reduced, casting is solved and locally splits
Core problem.
Realization that the present invention adopts the following technical solutions：
Spherical silica sand and ceramic sand compound film laminating sand, are prepared from the following components：The common silica sand of 70/140 mesh, 70/140
Mesh spherical shape silica sand, 50/100 mesh ceramsite sand, 50/100 mesh ferroso-ferric oxide sand, phenolic resin, hexamethylenetetramine, stearic acid
Calcium, water.
The present invention discloses a kind of preparation methods of spherical silica sand and ceramic sand compound film laminating sand, including following step
Suddenly：
1) 3-5% iron sand, 10%-20% spherical shapes silica sand, 10% ceramsite sand, 65-77% silica sands are mixed by weight percentage
Heating furnace is added after closing uniformly, heating temperature is put into sand mixer to after 110 DEG C -150 DEG C；
2) resin of weight percent 1.2%-1.8% ratios, mixed grind 70-120S is added；
3) the hexamethylenetetramine aqueous solution of weight percent 1%, mixed grind 100-150S is added；
4) calcium stearate of weight percent 1 ‰ is added, after mixed grind 30S, preparing becomes precoated sand.
Preferably, the weight ratio of water and hexamethylenetetramine is 1 in the hexamethylenetetramine aqueous solution:2.
The present invention melts aftershaping, this silica sand roundness using pretreated artificial spherical silica sand by high-temperature phase-change
Better than common silica sand, and impurity is few, and sour consumption value is small, can be substantially reduced the addition of resin in precoated sand preparation process.Ball-type
Silica sand and ceramsite sand have stable high-temperature performance, and linear expansion coefficient is low.It can effectively solve to cast by the precoated sand after this proportioning
Thermal fragmentation defect after sand core cast in the process.
Specific implementation mode
Embodiment 1
Present embodiment discloses a kind of spherical silica sands and ceramic sand compound film laminating sand, by weight percentage by following components system
It is standby to form：The common silica sand 64% of 70/140 mesh, 70/140 mesh spherical shape silica sand 20%, 50/100 mesh ceramsite sand 10%, 50/100 mesh
Ferroso-ferric oxide sand 3.4%, phenolic resin 1.6%, hexamethylenetetramine aqueous solution, 1%, calcium stearate 1 ‰.
The preparation method of spherical silica sand and ceramic sand compound film laminating sand, includes the following steps：
1) 3.4% iron sand, 20% spherical silica sand, 10% ceramsite sand, 64% silica sand are mixed in proportion by weight percentage
Heating furnace is added after uniformly, heating temperature is put into sand mixer to after 110 DEG C -150 DEG C；
2) resin of 1.6% ratio of weight percent, mixed grind 70-120S is added；
3) the hexamethylenetetramine aqueous solution of weight percent 1%, mixed grind 100-150S is added；
4) calcium stearate of weight percent 1 ‰ is added, after mixed grind 30S, preparing becomes precoated sand.
The weight ratio of water and hexamethylenetetramine is 1 in the hexamethylenetetramine aqueous solution:2.
The performance for measuring spherical silica sand and ceramic sand compound film laminating sand is as follows：Hot bending strength：5.44Mpa, room temperature are anti-
Curved intensity：9.37Mpa, hot tensile strength：1.70Mpa room temperature tensile strength：4.57Mpa gas forming amount：15.7mL/g igloss
Amount：2.48%, granularity：70/140 mesh, average fineness：75.
Spherical shape silica sand of the invention can reduce casting pouring in the process because of sand core high-temperature behavior with ceramic sand compound film laminating sand
The thermal fragmentation defect of poor output.
Embodiment 2
Present embodiment discloses a kind of spherical silica sands and ceramic sand compound film laminating sand, are prepared from the following components：70/
The common silica sand of 140 mesh, 70/140 mesh spherical shape silica sand, 50/100 mesh ceramsite sand, 50/100 mesh ferroso-ferric oxide sand, phenolic resin,
Hexamethylenetetramine, calcium stearate, water.
The preparation method of spherical silica sand and ceramic sand compound film laminating sand, includes the following steps：
1) 4% iron sand, 15% spherical silica sand, 10% ceramsite sand, 68.5% silica sand are mixed in proportion by weight percentage
Heating furnace is added after uniformly, heating temperature is put into sand mixer to after 110 DEG C -150 DEG C；
2) resin of 1.5% ratio of weight percent, mixed grind 70-120S is added；
3) the hexamethylenetetramine aqueous solution of weight percent 1%, mixed grind 100-150S is added；
4) calcium stearate of weight percent 1 ‰ is added, after mixed grind 30S, preparing becomes precoated sand.
The weight ratio of water and hexamethylenetetramine is 1 in the hexamethylenetetramine aqueous solution:2.
Embodiment 3
Spherical silica sand and ceramic sand compound film laminating sand, are prepared from the following components：The common silica sand of 70/140 mesh, 70/140
Mesh spherical shape silica sand, 50/100 mesh ceramsite sand, 50/100 mesh ferroso-ferric oxide sand, phenolic resin, hexamethylenetetramine, stearic acid
Calcium, water.
The preparation method of spherical silica sand and ceramic sand compound film laminating sand, includes the following steps：
1) 5% iron sand, 20% spherical silica sand, 10% ceramsite sand, 62.2% silica sand are mixed in proportion by weight percentage
Heating furnace is added after uniformly, heating temperature is put into sand mixer to after 110 DEG C -150 DEG C；
2) resin of 1.8% ratio of weight percent, mixed grind 70-120S is added；
3) the hexamethylenetetramine aqueous solution of weight percent 1%, mixed grind 100-150S is added；
4) calcium stearate of weight percent 1 ‰ is added, after mixed grind 30S, preparing becomes precoated sand.
The weight ratio of water and hexamethylenetetramine is 1 in the hexamethylenetetramine aqueous solution:2.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (3)
1. spherical silica sand and ceramic sand compound film laminating sand, which is characterized in that be prepared from the following components：70/140 mesh ordinary silicon
Sand, 70/140 mesh spherical shape silica sand, 50/100 mesh ceramsite sand, 50/100 mesh ferroso-ferric oxide sand, phenolic resin, six methines four
Amine, calcium stearate, water.
2. a kind of preparation method of spherical shape silica sand and ceramic sand compound film laminating sand, which is characterized in that include the following steps：
1) by weight percentage 3-5% iron sand, 10%-20% spherical shapes silica sand, 10% ceramsite sand, 65-77% silica sands in proportion
It is added heating furnace after mixing, heating temperature is put into sand mixer to after 110 DEG C -150 DEG C；
2) resin of weight percent 1.2%-1.8% ratios, mixed grind 70-120S is added；
3) the hexamethylenetetramine aqueous solution of weight percent 1%, mixed grind 100-150S is added；
4) calcium stearate of weight percent 1 ‰ is added, after mixed grind 30S, preparing becomes precoated sand.
3. the preparation method of spherical shape silica sand and ceramic sand compound film laminating sand according to claim 2, which is characterized in that described
The weight ratio of water and hexamethylenetetramine is 1 in hexamethylenetetramine aqueous solution:2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810438873.9A CN108526386A (en) | 2018-05-09 | 2018-05-09 | Spherical silica sand and ceramic sand compound film laminating sand and preparation method thereof |
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| CN201810438873.9A CN108526386A (en) | 2018-05-09 | 2018-05-09 | Spherical silica sand and ceramic sand compound film laminating sand and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770298A (en) * | 2021-07-29 | 2021-12-10 | 无锡正杰机械科技有限公司 | Low-gas-evolution precoated sand for casting sand mold of turbine shell |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101088659A (en) * | 2007-08-09 | 2007-12-19 | 山东圣泉化工股份有限公司 | Coated low-nitrogen sand and its prepn |
| CN104999031A (en) * | 2015-08-12 | 2015-10-28 | 宁波高新区多维时空科技有限公司 | Rapid manufacturing method for sprayed and cured molding sand |
| CN107052225A (en) * | 2016-12-30 | 2017-08-18 | 天津泽希矿产加工有限公司 | Spherical fused silica of special sand and its preparation method and application |
| CN107096871A (en) * | 2017-07-03 | 2017-08-29 | 李吕军 | Accelerate precoated sand of cast member shaping speed 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 |
| CN107774881A (en) * | 2016-08-29 | 2018-03-09 | 青岛天地铸造有限公司 | Easy gas permeability 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 |
| CN108213324A (en) * | 2018-02-11 | 2018-06-29 | 常州中车汽车零部件有限公司 | A kind of high-accuracy cast precoated sand and preparation method thereof |
-
2018
- 2018-05-09 CN CN201810438873.9A patent/CN108526386A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101088659A (en) * | 2007-08-09 | 2007-12-19 | 山东圣泉化工股份有限公司 | Coated low-nitrogen sand and its prepn |
| CN104999031A (en) * | 2015-08-12 | 2015-10-28 | 宁波高新区多维时空科技有限公司 | Rapid manufacturing method for sprayed and cured molding sand |
| CN107774881A (en) * | 2016-08-29 | 2018-03-09 | 青岛天地铸造有限公司 | Easy gas permeability precoated sand |
| CN107052225A (en) * | 2016-12-30 | 2017-08-18 | 天津泽希矿产加工有限公司 | Spherical fused silica of special sand and its preparation method and application |
| 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 |
| CN107096871A (en) * | 2017-07-03 | 2017-08-29 | 李吕军 | Accelerate precoated sand of cast member shaping speed and preparation method thereof |
| 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 |
| CN108213324A (en) * | 2018-02-11 | 2018-06-29 | 常州中车汽车零部件有限公司 | A kind of high-accuracy cast precoated sand and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770298A (en) * | 2021-07-29 | 2021-12-10 | 无锡正杰机械科技有限公司 | Low-gas-evolution precoated sand for casting sand mold of turbine shell |
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Application publication date: 20180914 |