CN204135285U - A kind of gray iron casting mould that can prevent Shrinkage cavity - Google Patents
A kind of gray iron casting mould that can prevent Shrinkage cavity Download PDFInfo
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- CN204135285U CN204135285U CN201420549421.5U CN201420549421U CN204135285U CN 204135285 U CN204135285 U CN 204135285U CN 201420549421 U CN201420549421 U CN 201420549421U CN 204135285 U CN204135285 U CN 204135285U
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- cooling fin
- cooling
- shrinkage cavity
- mould
- thermal block
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Abstract
The utility model discloses a kind of gray iron casting mould that can prevent Shrinkage cavity, comprise die ontology, described die ontology top arranges thermal block, and described thermal block arranges cooling fin, described cooling fin is rectangular tab, and described rectangular tab bottom surface cross section is greater than cross section; The utility model does not arrange feeding head or chill on mould, and cooling fin is set makes its cooling that can take the lead in when casting cooling the top of slow position, and then play the effect of fin, by cool slowly in die cavity heat be passed to cooling fin, make it can realize the cooling velocity the same with other thin-walled positions, thus avoid Shrinkage cavity, and reduce cost, improve product percent of pass, be worthy to be popularized and application.
Description
Technical field
The utility model belongs to casting mould technical field, is specifically related to a kind of castings of gray cast iron mould that can prevent Shrinkage cavity.
Technical background
At present, in casting process, near the axis region of casting section thickness, thick large part, rising head root and ingate, shrinkage porosite tendency is larger; For prevention shrinkage porosite, feeding head need be increased, place chill to change casting solidification order, to reach the object of production dense internal organization foundry goods; And use rising head often to make casting process yield reduce, if arrange chill, foundry goods can be made to produce spoken parts in traditional operas and to tilt, thus cause processing difficulties; Adopt machine molding in modern casting more simultaneously, make sand mold intensity very large, cause foundry goods exhaust problem, make cast(ing) surface form gas hole defect, above-mentioned routine techniques all can not overcome one's shortcomings, and discloses a kind of greensand mo(u)lding mould of thick large hydraulic castings at CN 102476167 A, be provided with top box and nowel, the cavity molding of nowel comprises foundry goods, the bottom of feeding head neck and feeding head, and the cavity molding of top box is only the top of feeding head; Although it can realize quick cooling, it still makes extremely to require great effort when process burr,
And in other documents, also not yet there is the method that addresses this is that or precedent, therefore need a kind of castings of gray cast iron mould that can prevent Shrinkage cavity.
Utility model content
Main purpose of the present utility model is to provide a kind of simple and practical, effectively can prevent the castings of gray cast iron mould of Shrinkage cavity.
In order to the technical solution of the utility model that solves the problem: a kind of castings of gray cast iron mould that can prevent Shrinkage cavity, comprise die ontology, described die ontology top arranges thermal block, described thermal block arranges cooling fin, described cooling fin is rectangular tab, and described rectangular tab bottom surface cross section is greater than cross section.
Described cooling fin is cross section is criss-cross three-dimensional module.
Described thermal block is separate threads post.
Described die ontology is castings of gray cast iron mould.
The utility model has been abandoned in existing Foundry Production and has been adopted feeding head or arrange chill to prevent the routine techniques of Shrinkage cavity, abandoned originally assembling the many heavy walls of liquation or thickening platform place feeding head or chill were set and the mode that arranges cooling fin, make the chilling that it not only avoids because chill causes, and the phenomenon that feeding head area causes casting process yield to reduce greatly on the contrary; Cooling fin is directly connected with foundry goods, but cooling fin is very thin compared with foundry goods, therefore can not produce new thermal coagulation and produce heat interference to solidifying of foundry goods; And cooling fin volume much smaller than general shape rising head and surface area is very large, significantly can not reduce the product yield of foundry goods like this, simultaneously relatively simple a lot of when clearing up, only need firmly to beat and can realize cooling fin disengaging, greatly reduce the intensity of work, because cooling fin volume is little but area of dissipation is large, can prior to casting solidification in casting process, according to heat from high-temperature region to the principle that low-temperature space transmits, cooling fin can produce cooling effect to foundry goods thermojunction position, accelerate solidifying of thermojunction position, prevention shrinkage porosite and shrinkage cavity; Simultaneously because cooling fin is formed in casting process, be different from chill and can make foundry goods chilling, the chilling tendency of castings of gray cast iron can be reduced.Cooling fin is often arranged on the patrix top of casting die, gas can be made to float and be gathered in the position of cooling fin, effectively can reduce the formation of blowhole.
Thermal block top at mould in the utility model arranges cooling fin, thermal block described herein can for arranging the cylinder table of screwed hole, also can be the thicker sidewall of cavity body of mould, so arranging cooling fin makes it will can originally be difficult to the mode of liquation habitat by heat trnasfer of cooling fast, realize the cooling velocity identical with other positions, thus can avoid owing to cooling the Shrinkage cavity slowly caused.
The utility model does not arrange feeding head or chill on mould, and cooling fin is set makes its cooling that can take the lead in when casting cooling the top of slow position, and then play the effect of fin, by cool slowly in die cavity heat be passed to cooling fin, make it can realize the cooling velocity the same with other thin-walled positions, thus avoid Shrinkage cavity, and reduce cost, improve product percent of pass, be worthy to be popularized and application.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model;
Fig. 2 be the utility model cooling fin face structural representation;
Fig. 3 is the side structure schematic diagram of the utility model cooling fin;
Fig. 4 is the plan structure schematic diagram of the another kind of cooling fin of the utility model;
Fig. 5 is the side structure schematic diagram of the another kind of cooling fin of the utility model;
1-cooling fin 2-die ontology 3-thermal bonding block.
Detailed description of the invention
Embodiment one: a kind of castings of gray cast iron mould that can prevent Shrinkage cavity, comprise die ontology 2, described die ontology 2 top arranges thermal block 3, and described thermal block 3 arranges cooling fin, described cooling fin 1 is rectangular tab, and described rectangular tab bottom surface cross section is greater than cross section.
Described thermal block 3 is separate threads post.
Described die ontology 2 is castings of gray cast iron mould.
Embodiment two: a kind of castings of gray cast iron mould that can prevent Shrinkage cavity, comprises die ontology 2, described die ontology 2 top arranges thermal block 3, and described thermal block 3 arranges cooling fin, described cooling fin 1 for cross section be criss-cross three-dimensional module.
Described thermal block 3 is separate threads post.
Described die ontology 2 is castings of gray cast iron mould.
The utility model has been abandoned in existing Foundry Production and has been adopted feeding head or arrange chill to prevent the routine techniques of Shrinkage cavity, abandoned originally assembling the many heavy walls of liquation or thickening platform place feeding head or chill were set and the mode that arranges cooling fin, make the chilling that it not only avoids because chill causes, and the phenomenon that feeding head area causes casting process yield to reduce greatly on the contrary; Cooling fin is directly connected with foundry goods, but cooling fin is very thin compared with foundry goods, therefore can not produce new thermal coagulation and produce heat interference to solidifying of foundry goods; And cooling fin volume much smaller than general shape rising head and surface area is very large, significantly can not reduce the product yield of foundry goods like this, simultaneously relatively simple a lot of when clearing up, only need firmly to beat and can realize cooling fin disengaging, greatly reduce the intensity of work, because cooling fin volume is little but area of dissipation is large, can prior to casting solidification in casting process, according to heat from high-temperature region to the principle that low-temperature space transmits, cooling fin can produce cooling effect to foundry goods thermojunction position, accelerate solidifying of thermojunction position, prevention shrinkage porosite and shrinkage cavity; Simultaneously because cooling fin is formed in casting process, be different from chill and can make foundry goods chilling, the chilling tendency of castings of gray cast iron can be reduced.Cooling fin is often arranged on the patrix top of casting die, gas can be made to float and be gathered in the position of cooling fin, effectively can reduce the formation of blowhole.
Thermal block top at mould in the utility model arranges cooling fin, thermal block described herein can for arranging the cylinder table of screwed hole, also can be the thicker sidewall of cavity body of mould, so arranging cooling fin makes it will can originally be difficult to the mode of liquation habitat by heat trnasfer of cooling fast, realize the cooling velocity identical with other positions, thus can avoid owing to cooling the Shrinkage cavity slowly caused.
The utility model does not arrange feeding head or chill on mould, and cooling fin is set makes its cooling that can take the lead in when casting cooling the top of slow position, and then play the effect of fin, by cool slowly in die cavity heat be passed to cooling fin, make it can realize the cooling velocity the same with other thin-walled positions, thus avoid Shrinkage cavity, and reduce cost, improve product percent of pass, be worthy to be popularized and application.
Claims (4)
1. one kind can prevent the gray iron casting mould of Shrinkage cavity, it is characterized in that: comprise die ontology, described die ontology top arranges thermal block, and described thermal block arranges cooling fin, described cooling fin is rectangular tab, and described rectangular tab bottom surface cross section is greater than cross section.
2. the gray iron casting mould that can prevent Shrinkage cavity according to claim 1, is characterized in that: described cooling fin is cross section is criss-cross three-dimensional module.
3. the gray iron casting mould that can prevent Shrinkage cavity according to claim 1, is characterized in that: described thermal block is separate threads post.
4. the gray iron casting mould that can prevent Shrinkage cavity according to claim 1, is characterized in that: described die ontology is castings of gray cast iron mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420549421.5U CN204135285U (en) | 2014-09-24 | 2014-09-24 | A kind of gray iron casting mould that can prevent Shrinkage cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420549421.5U CN204135285U (en) | 2014-09-24 | 2014-09-24 | A kind of gray iron casting mould that can prevent Shrinkage cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204135285U true CN204135285U (en) | 2015-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420549421.5U Expired - Fee Related CN204135285U (en) | 2014-09-24 | 2014-09-24 | A kind of gray iron casting mould that can prevent Shrinkage cavity |
Country Status (1)
| Country | Link |
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| CN (1) | CN204135285U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889374A (en) * | 2015-06-01 | 2015-09-09 | 四川南车共享铸造有限公司 | Ductile cast iron casting piece structure with cooling fin and design method of same |
| CN106862488A (en) * | 2016-12-29 | 2017-06-20 | 山东汇金股份有限公司 | The method cast using the vertical-parting of cooling fin reduction Shrinkage Porosity defect |
| CN108838336A (en) * | 2018-07-28 | 2018-11-20 | 重庆宏钢数控机床有限公司 | The lathe bed manufacturing process of lead screw mould group installation accuracy can be improved |
| CN114951586A (en) * | 2022-05-30 | 2022-08-30 | 阿诺诗(广东)精密金属科技有限公司 | Cold and hot paste application structure of precision casting and application method thereof |
-
2014
- 2014-09-24 CN CN201420549421.5U patent/CN204135285U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889374A (en) * | 2015-06-01 | 2015-09-09 | 四川南车共享铸造有限公司 | Ductile cast iron casting piece structure with cooling fin and design method of same |
| CN106862488A (en) * | 2016-12-29 | 2017-06-20 | 山东汇金股份有限公司 | The method cast using the vertical-parting of cooling fin reduction Shrinkage Porosity defect |
| CN108838336A (en) * | 2018-07-28 | 2018-11-20 | 重庆宏钢数控机床有限公司 | The lathe bed manufacturing process of lead screw mould group installation accuracy can be improved |
| CN114951586A (en) * | 2022-05-30 | 2022-08-30 | 阿诺诗(广东)精密金属科技有限公司 | Cold and hot paste application structure of precision casting and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151126 Address after: Nanyang City, Henan province 474550 Xixia County Private eco industrial park (enter Zhen Shi Mei Long Cun) Patentee after: Xishan Xibeng Special Founding Co., Ltd. Address before: 474550 Industrial Zone, East Ring Road, Xixia County, Nanyang, Henan Patentee before: Xixia Automobile Water Pump Co., Ltd., Henan Prov. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20190924 |