CN107900306A - Compression casting salt core preparation method - Google Patents
Compression casting salt core preparation method Download PDFInfo
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- CN107900306A CN107900306A CN201711068346.5A CN201711068346A CN107900306A CN 107900306 A CN107900306 A CN 107900306A CN 201711068346 A CN201711068346 A CN 201711068346A CN 107900306 A CN107900306 A CN 107900306A
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- Prior art keywords
- salt core
- water
- compression casting
- core preparation
- preparation
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2209—Selection of die materials
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of compression casting salt core preparation method, this method includes：Water-soluble metal halide and pulvis are carried out to be mixed to get preconditioned mixture, the value range of the water-soluble metal halide and the mass ratio of the pulvis is 25 to 50, and the pulvis includes at least one of graphite powder and talcum powder；The aqueous solution of 0.5 to 1 milliliter of sodium metasilicate is sprayed to every kilogram of the preconditioned mixture, obtains mixture to be processed；The mixture to be processed is suppressed successively, turning, curing, obtain stand-by salt core.The invention has the beneficial effects that provide a kind of preparation method for the requirement that salt core can be enable to better meet compression casting.
Description
Technical field
The present invention relates to a kind of salt core preparation method, and in particular to a kind of compression casting salt core preparation method.
Background technology
It is especially complex for those shapes in some precision castings such as automobile and aero-engine, machinery can not be passed through
The casting of the complicated inner cavity of processing or other similar forming method manufactures, is cast using low pressure or normal pressure casting method, such as sand mold
Make, the widely applied sand core such as Gravity Permanent-Mold Casting Process, low pressure casting can meet their requirement.And for high-pressure casting,
The intensity of sand core is extremely difficult to require, and surface accuracy is low, and last sand removal work also takes time and effort, inefficiency, Gu Shui
Soluble salt element technology can tackle as above problem.
Application process of the salt core in foundry engieering be:Water miscible salt core is placed in inside mold cavity, liquid metal
Injection type intracavitary, salt core are solidified with alloy solution in cavity；After cooling, the salt core in casting, shape are fallen with high pressure water flow strikes
Into internal cavities.
Existing salt core material mainly has two kinds:A kind of is the pure salt (NaCl) or salt material for having certain granules degree
Material;Another kind is the bonding agent and reinforcing agent by adding certain proportion Special Category into pure salt or salt, and is uniformly mixed
The composite material formed.
In existing salt core blank pressing process, the salt core of simple shape is mainly suppressed, such as piston ring internal annular
Salt core；High temperature sintering is needed after compacting（600 DEG C of ＞）；For the salt core that shape is somewhat complicated, pressing process and salt core shaping ratio
More difficult, this just needs to be improved salt core material composition, while reduces pressed sintering temperature.
The content of the invention
A kind of compression casting salt core preparation method, including：Water-soluble metal halide and pulvis are mixed to get
The value range of preconditioned mixture, the water-soluble metal halide and the mass ratio of the pulvis is 25 to 50, the powder
Agent includes at least one of graphite powder and talcum powder；0.5 to 1 milliliter of silicic acid is sprayed to every kilogram of the preconditioned mixture
The aqueous solution of sodium, obtains mixture to be processed；The mixture to be processed is suppressed successively, turning, curing, obtain stand-by
Salt core.
Further, the granularity value range of the water-soluble metal halide is 100 to 200 mesh.
Further, the water-soluble metal halide is sodium chloride.
Further, 400 to 800 mesh of granularity value range of the graphite powder.
Further, 600 to 800 mesh of granularity value range of the talcum powder.
Further, the sodium silicate solution is the solution of sodium silicate nanahydrate and water, wherein every ten millis liter of water
8 to 12 grams of the quality value range of nine water sodium metasilicate.
Further, the compression casting is further included with salt core preparation method：
Sodium silicate aqueous solution is uniformly sprayed to the outer surface of the stand-by salt core, forms salt core to be sintered.
Further, the sodium silicate solution is the solution of sodium silicate nanahydrate and water, wherein every ten millis liter of water
8 to 12 grams of the quality value range of nine water sodium metasilicate.
Further, the compression casting is further included with salt core preparation method：
The salt core to be sintered is stood into preset time, then the salt core to be sintered is sent into heat-treatment furnace and is heating and curing.
Further, solidification temperature value range of the salt core to be sintered in the heat-treatment furnace is taken the photograph for 200 to 250
Family name's degree.
The invention has the beneficial effects that：
Provide a kind of preparation method for the requirement that salt core can be enable to better meet compression casting.
Brief description of the drawings
Fig. 1 is the structure diagram of compression casting salt core one preferred embodiment of preparation method of the present invention.
Embodiment
Compression casting as shown in Figure 1 salt core preparation method, including：Water-soluble metal halide and pulvis are mixed
Conjunction obtains preconditioned mixture, and the value range of the water-soluble metal halide and the mass ratio of the pulvis is 25 to 50,
The pulvis includes at least one of graphite powder and talcum powder；To every kilogram of 0.5 to 1 milli of preconditioned mixture sprinkling
The aqueous solution of sodium metasilicate is risen, obtains mixture to be processed；The mixture to be processed is suppressed successively, turning, curing, obtain
To stand-by salt core.
Specifically, the granularity value range of the water-soluble metal halide is 100 to 200 mesh.
Specifically, the water-soluble metal halide is sodium chloride.
Specifically, 400 to 800 mesh of granularity value range of the graphite powder.
Specifically, 600 to 800 mesh of granularity value range of the talcum powder.
Specifically, the sodium silicate solution is the solution of sodium silicate nanahydrate and water, wherein every ten millis liter of water
8 to 12 grams of the quality value range of nine water sodium metasilicate.
Specifically, the compression casting is further included with salt core preparation method：
Sodium silicate aqueous solution is uniformly sprayed to the outer surface of the stand-by salt core, forms salt core to be sintered.
Specifically, the sodium silicate solution is the solution of sodium silicate nanahydrate and water, wherein every ten millis liter of water
8 to 12 grams of the quality value range of nine water sodium metasilicate.
Specifically, the compression casting is further included with salt core preparation method：
The salt core to be sintered is stood into preset time, then the salt core to be sintered is sent into heat-treatment furnace and is heating and curing.
Specifically, solidification temperature value range of the salt core to be sintered in the heat-treatment furnace is taken the photograph for 200 to 250
Family name's degree.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the invention is not limited in any way for above-described embodiment, all to be obtained by the way of equivalent substitution or equivalent transformation
Technical solution, all falls within protection scope of the present invention.
Claims (10)
- A kind of 1. compression casting salt core preparation method, it is characterised in that including：Water-soluble metal halide and pulvis are carried out to be mixed to get preconditioned mixture, the water-soluble metal halide and institute The value range for stating the mass ratio of pulvis is 25 to 50, and the pulvis includes at least one of graphite powder and talcum powder；The aqueous solution of 0.5 to 1 milliliter of sodium metasilicate is sprayed to every kilogram of the preconditioned mixture, obtains mixture to be processed；The mixture to be processed is suppressed successively, turning, curing, obtain stand-by salt core.
- 2. compression casting according to claim 1 salt core preparation method, it is characterised in that the water-soluble metal halogenation The granularity value range of thing is 100 to 200 mesh.
- 3. compression casting according to claim 1 salt core preparation method, it is characterised in that the water-soluble metal halogenation Thing is sodium chloride.
- 4. compression casting according to claim 1 salt core preparation method, it is characterised in that the granularity of the graphite powder takes It is worth the mesh of scope 400 to 800.
- 5. compression casting according to claim 1 salt core preparation method, it is characterised in that the granularity of the talcum powder takes It is worth the mesh of scope 600 to 800.
- 6. compression casting according to claim 1 salt core preparation method, it is characterised in that the sodium silicate solution is nine The solution of hydrated sodium silicate and water, wherein 8 to 12 grams of the quality value range of nine water sodium metasilicate of every ten millis liter of water.
- 7. compression casting according to claim 1 salt core preparation method, it is characterised in that compression casting salt core Preparation method further includes：Sodium silicate aqueous solution is uniformly sprayed to the outer surface of the stand-by salt core, forms salt core to be sintered.
- 8. compression casting according to claim 7 salt core preparation method, it is characterised in that the sodium silicate solution is nine The solution of hydrated sodium silicate and water, wherein 8 to 12 grams of the quality value range of nine water sodium metasilicate of every ten millis liter of water.
- 9. compression casting according to claim 8 salt core preparation method, it is characterised in that compression casting salt core Preparation method further includes：The salt core to be sintered is stood into preset time, then the salt core to be sintered is sent into heat-treatment furnace and is heating and curing.
- 10. compression casting according to claim 9 salt core preparation method, it is characterised in that the salt core to be sintered exists Solidification temperature value range in the heat-treatment furnace is 200 to 250 degrees Celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068346.5A CN107900306A (en) | 2017-11-03 | 2017-11-03 | Compression casting salt core preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068346.5A CN107900306A (en) | 2017-11-03 | 2017-11-03 | Compression casting salt core preparation method |
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| CN107900306A true CN107900306A (en) | 2018-04-13 |
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ID=61843393
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711068346.5A Pending CN107900306A (en) | 2017-11-03 | 2017-11-03 | Compression casting salt core preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047671A (en) * | 2018-09-05 | 2018-12-21 | 湖南江滨机器（集团）有限责任公司 | A kind of salt core and preparation method thereof and salt core material |
| CN109047670A (en) * | 2018-08-24 | 2018-12-21 | 南京泉峰汽车精密技术股份有限公司 | Salt core preparation method |
Citations (5)
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|---|---|---|---|---|
| DE102004038288A1 (en) * | 2004-02-19 | 2005-09-08 | Müller, Emil | Water soluble salt cores for die casting obtained by compression of a mixture containing borax, Mg, graphite or talc, and salts useful for casting operations |
| CN1739883A (en) * | 2005-09-12 | 2006-03-01 | 华南理工大学 | Soluble salt core for extrusion casting and its making process |
| CN101869963A (en) * | 2010-07-06 | 2010-10-27 | 湖南江滨机器（集团）有限责任公司 | Foundry water-soluble composite salt core material, salt core preparation method and prepared salt core |
| CN104399865A (en) * | 2014-12-01 | 2015-03-11 | 湖南江滨机器（集团）有限责任公司 | Water-soluble graphite composited salt core material, graphite composited salt core and preparation method thereof |
| CN108655362A (en) * | 2017-03-30 | 2018-10-16 | 现代自动车株式会社 | Hollow salt core and preparation method thereof |
-
2017
- 2017-11-03 CN CN201711068346.5A patent/CN107900306A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004038288A1 (en) * | 2004-02-19 | 2005-09-08 | Müller, Emil | Water soluble salt cores for die casting obtained by compression of a mixture containing borax, Mg, graphite or talc, and salts useful for casting operations |
| CN1739883A (en) * | 2005-09-12 | 2006-03-01 | 华南理工大学 | Soluble salt core for extrusion casting and its making process |
| CN101869963A (en) * | 2010-07-06 | 2010-10-27 | 湖南江滨机器（集团）有限责任公司 | Foundry water-soluble composite salt core material, salt core preparation method and prepared salt core |
| CN104399865A (en) * | 2014-12-01 | 2015-03-11 | 湖南江滨机器（集团）有限责任公司 | Water-soluble graphite composited salt core material, graphite composited salt core and preparation method thereof |
| CN108655362A (en) * | 2017-03-30 | 2018-10-16 | 现代自动车株式会社 | Hollow salt core and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王金华: "《铸件结构设计》", 30 April 1983, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047670A (en) * | 2018-08-24 | 2018-12-21 | 南京泉峰汽车精密技术股份有限公司 | Salt core preparation method |
| CN109047671A (en) * | 2018-09-05 | 2018-12-21 | 湖南江滨机器（集团）有限责任公司 | A kind of salt core and preparation method thereof and salt core material |
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Application publication date: 20180413 |
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