CN202398784U - Cast sand mould - Google Patents

Cast sand mould Download PDF

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Publication number
CN202398784U
CN202398784U CN2012200244892U CN201220024489U CN202398784U CN 202398784 U CN202398784 U CN 202398784U CN 2012200244892 U CN2012200244892 U CN 2012200244892U CN 201220024489 U CN201220024489 U CN 201220024489U CN 202398784 U CN202398784 U CN 202398784U
Authority
CN
China
Prior art keywords
cooling
airway
casting
cooling airway
workpiece cavity
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.)
Expired - Fee Related
Application number
CN2012200244892U
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Chinese (zh)
Inventor
郭文锋
张海若
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANDONG LEDE MACHINERY CO Ltd
Original Assignee
SHANDONG LEDE MACHINERY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHANDONG LEDE MACHINERY CO Ltd filed Critical SHANDONG LEDE MACHINERY CO Ltd
Priority to CN2012200244892U priority Critical patent/CN202398784U/en
Application granted granted Critical
Publication of CN202398784U publication Critical patent/CN202398784U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a cast sand mould, which comprises a sand mould body around a workpiece cavity. A cooling airway is also arranged in the sand mould body, and at least one end of the cooling airway is communicated with the outside. The cooling airway and the workpiece cavity are separately arranged, and the cooling airway is arranged nearby the thick wall or the hot spot of the workpiece cavity. The cross section of the cooling airway is semicircular or trapezoidal. Thus, the cooling effect of the side wall of the cooling airway is more uniform, which is favorable for increasing the casting quality of the cast sand mould. The cooling airway comprises a longitudinal airway and a horizontal airway which are vertically communicated with each other, which can increase the volume of the cooling airway and is favorable for increasing the casting cooling speed and effect. The cast sand mould with the structure has a reasonable structure and can solve the problems of shrinkage and hole locking, the casting is convenient, the yield of metal is high, and the casting quality is favorably increased.

Description

A kind of casting sand type
Technical field
The utility model relates to a kind of casting sand type.
Background technology
Casting is human a kind of metal fever processing technology of grasping relatively early, existing about 6000 history.China has got into the heyday of bronze casting between B.C. 1700~preceding 1000, reached quite high level on the technology.Casting is meant the processing mode of treating its solidification forming in the room temperature for mold liquid but that pour solidified material into given shape in the near future.Casting is Metal Melting to be smelt meet necessarily required liquid and water in casting mold, obtains the technical process of the foundry goods of reservation shape, size and performance through cooled and solidified, after leveling processing.Cast blank is shaped because of being close to, and has reduced cost and has reduced Production Time to a certain extent and reach the purpose of exempting from machining or a small amount of processing. and casting is one of fundamental technology of modem devices process industry.The casting kind is a lot, and the difference of pressing formative method is divided into ordinary sand casting and Special Processes of Metal Castings traditionally.Ordinary sand casting generally is to utilize molding sand to process around the casting sand type of workpiece cavity to cast; Because workpiece cavity is exactly the shape of product that will cast; So in workpiece cavity, fill with molten metal and cooling, can obtain the product blank that will cast, manufacture simple; With low cost, use very extensive.Utilize in the process that the conventional cast sand mold casts, foundry goods and heavy wall place or thermal center place are easy to generate shrinkage porosite, shrinkage cavity defect.The solution of long usefulness is near foundry goods and heavy wall or thermal center, to set up feeding head; Or,, the position of easy generation shrinkage porosite, shrinkage cavity is at first solidified, and come feeding through follow-up cast to increase the local cooling velocity of foundry goods at the thicker position installation of foundry goods chill.But make the effect of rising head performance feeding, the size of rising head must be provided with greatlyyer, so just must increase the use amount of casting of molten metal, has reduced metal and has gone out yield rate.Utilize the chill feeding then can receive the restriction of chill placement location and consumption etc., complex operation is inappropriate for the production in enormous quantities of foundry goods.
Summary of the invention
The technical problem that the utility model will solve is to provide a kind of rational in infrastructure to above-mentioned deficiency, can solve shrinkage porosite, lockhole phenomenon, and casting is convenient, and metal goes out the high casting sand type of yield rate.
For solving the problems of the technologies described above; This casting sand type comprises the sand mold body around workpiece cavity; Its design feature is: also be provided with the cooling airway that at least one end is in communication with the outside in the sand mold body; Cooling airway and workpiece cavity are isolated and are provided with, and the heavy wall of cooling airway and workpiece cavity or thermal center place are provided with nearby.
The casting sand type of this structure be through workpiece cavity heavy wall or thermal center place in advance cooling structure realize solving shrinkage porosite, lockhole phenomenon, casting is convenient, and metal to go out yield rate high.
Workpiece cavity heavy wall or thermal center place cooling structure in advance mainly comprise the cooling airway that is arranged in the sand mold body, and at least one end of cooling airway is communicated with outside atmosphere, so just can discharge the heat that distributes when metallic solution fills type through cooling airway.For the whole work-piece die cavity; Cooling airway is to be provided with near the heavy wall place of workpiece cavity or thermal center place; The heavy wall place of workpiece cavity or thermal center place can be faster than other position coolings, and metallic solution can cool off at the heavy wall place or the thermal center place of workpiece cavity in advance like this.Like this, near uncooled molten metal can preferentially add to the heavy wall place or the thermal center place of workpiece cavity, therefore can effectively avoid shrinkage porosite, the lockhole phenomenon at the heavy wall place or the thermal center place of workpiece cavity.This casting sand type need not to be provided with rising head and can solve shrinkage porosite, shrinkage cavity phenomenon, has also just saved the consumption of metallic solution, has guaranteed that greatly metal goes out yield rate.
As a kind of implementation, the cross section of said cooling airway is semicircle or trapezoidal.
Cooling airway is arranged to cross section for semicircle or trapezoidal passage, can makes the cooling effect of cooling airway more even, help to improve the castability of this casting sand type.
As improvement, said cooling airway comprises the vertical air channel and the horizontal flue of vertical connection.
Cooling airway is arranged to the vertical air channel and the horizontal flue of vertical connection, can increases the volume of cooling airway, increase exhaust capacity and promptly increase heat-sinking capability, help to improve cooling velocity and effect.
In sum, adopt the casting sand type of this structure rational in infrastructure, can solve shrinkage porosite, lockhole phenomenon, casting is convenient, and metal goes out the yield rate height, helps to improve castability.
Description of drawings
In conjunction with accompanying drawing the utility model is explained further details:
Fig. 1 is the structural representation of the utility model.
Among the figure: 1 is workpiece cavity, and 2 is the sand mold body, and 3 is cooling airway, and 4 is vertical air channel, and 5 is horizontal flue.
The specific embodiment
As shown in Figure 1, this casting sand type mainly comprises the sand mold body 2 that is provided with around workpiece cavity 1, also is provided with cooling airway 3 in the sand mold body 2, and cooling airway 3 at least one ends are communicated with outside atmosphere.In the present embodiment, the cross section of cooling airway 3 is semicircle, and is provided with near workpiece cavity 1, can make the cooling effect of cooling airway 3 sidewalls more even like this, helps to improve the castability of this casting sand type.In the present embodiment, cooling airway 3 comprises the vertical air channel 4 and horizontal flue 5 of vertical connection, can increase the volume of cooling airway, increases the heat-sinking capability of cooling airway, helps to improve casting cooling speed and effect.
Cooling airway 3 is to isolate to be provided with workpiece cavity 1, can not get into workpiece cavity 1 by cooling airway 3 interior cold air like this, has also just avoided air holes, helps to guarantee castability.For whole work-piece die cavity 1; Cooling airway 3 is to be provided with near the heavy wall place of workpiece cavity 1 or thermal center place; Therefore after feeding cold air; The heavy wall place of workpiece cavity 1 or thermal center place can be faster than other position coolings, and metallic solution can cool off at the heavy wall place or the thermal center place of workpiece cavity 1 in advance like this.Like this, near uncooled molten metal can preferentially add to the heavy wall place or the thermal center place of workpiece cavity 1, therefore can effectively avoid shrinkage porosite, the lockhole phenomenon at the heavy wall place or the thermal center place of workpiece cavity 1.This casting sand type need not to be provided with rising head and can solve shrinkage porosite, shrinkage cavity phenomenon, has also just saved the consumption of metallic solution, has guaranteed that greatly metal goes out yield rate.

Claims (3)

1. casting sand type; Comprise sand mold body (2) around workpiece cavity (1); It is characterized in that: also be provided with the cooling airway (3) that at least one end is in communication with the outside in the sand mold body (2); Cooling airway (3) is isolated setting with workpiece cavity (1), and the heavy wall or the thermal center place of cooling airway (3) and workpiece cavity (1) are provided with nearby.
2. casting sand type as claimed in claim 1 is characterized in that: the cross section of said cooling airway (3) is for semicircle or trapezoidal.
3. according to claim 1 or claim 2 casting sand type, it is characterized in that: said cooling airway (3) comprises the vertical air channel (4) and the horizontal flue (5) of vertical connection.
CN2012200244892U 2012-01-19 2012-01-19 Cast sand mould Expired - Fee Related CN202398784U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200244892U CN202398784U (en) 2012-01-19 2012-01-19 Cast sand mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200244892U CN202398784U (en) 2012-01-19 2012-01-19 Cast sand mould

Publications (1)

Publication Number Publication Date
CN202398784U true CN202398784U (en) 2012-08-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012200244892U Expired - Fee Related CN202398784U (en) 2012-01-19 2012-01-19 Cast sand mould

Country Status (1)

Country Link
CN (1) CN202398784U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105750494A (en) * 2016-03-04 2016-07-13 清华大学 Double-layer structure new casting mold
CN106180579A (en) * 2016-07-15 2016-12-07 杭州汽轮铸锻有限公司 A kind of casting mold method for rapid cooling
CN108115099A (en) * 2018-01-17 2018-06-05 共享装备股份有限公司 The method for solving 3D printing sand core ash ironware surface depression
CN108115100A (en) * 2018-01-17 2018-06-05 共享装备股份有限公司 The method for preventing casting and female rotor shrinkage cavity and porosity
CN108436034A (en) * 2018-04-23 2018-08-24 共享装备股份有限公司 Reduce the ventilation device of casting cooling time

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105750494A (en) * 2016-03-04 2016-07-13 清华大学 Double-layer structure new casting mold
CN106180579A (en) * 2016-07-15 2016-12-07 杭州汽轮铸锻有限公司 A kind of casting mold method for rapid cooling
CN108115099A (en) * 2018-01-17 2018-06-05 共享装备股份有限公司 The method for solving 3D printing sand core ash ironware surface depression
CN108115100A (en) * 2018-01-17 2018-06-05 共享装备股份有限公司 The method for preventing casting and female rotor shrinkage cavity and porosity
CN108115100B (en) * 2018-01-17 2020-08-07 共享装备股份有限公司 Method for preventing female rotor from shrinkage cavity and shrinkage porosity
CN108436034A (en) * 2018-04-23 2018-08-24 共享装备股份有限公司 Reduce the ventilation device of casting cooling time

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120829

Termination date: 20180119

CF01 Termination of patent right due to non-payment of annual fee