CN204234675U - A kind of mud core for three cylinder crankshaft formative technologies - Google Patents
A kind of mud core for three cylinder crankshaft formative technologies Download PDFInfo
- Publication number
- CN204234675U CN204234675U CN201420673500.7U CN201420673500U CN204234675U CN 204234675 U CN204234675 U CN 204234675U CN 201420673500 U CN201420673500 U CN 201420673500U CN 204234675 U CN204234675 U CN 204234675U
- Authority
- CN
- China
- Prior art keywords
- core
- mud core
- chill
- sand
- layer
- 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
Links
Abstract
The utility model discloses a kind of mud core for three cylinder crankshaft formative technologies, mud core comprises chill and layer of sand, wherein chill outside is wrapped up by layer of sand, chill outer wrap with the thickness of the layer of sand of foundry goods contact portion for being more than or equal to 5 millimeters and being less than or equal to 6 millimeters.Its beneficial effect is: solve the existence due to core a large amount of in mould, cause the thermal center at connecting rod place too concentrated, the problem of cooling effect difference.The defects such as the shrinkage cavity and porosity at connecting rod thermal center place are reduced greatly even disappear; Also enhance the intensity of mud core simultaneously, avoid the problem breaking mud core because lower core is not in place when mould assembling and occur scrapping disconnected core foundry goods.
Description
Technical field
The utility model belongs to casting field, particularly a kind of mud core for three cylinder crankshaft formative technologies.
Background technology
Bent axle is the core component of automobile engine, is produce the optimal a kind of casting technique of bent axle with Sand-Faced Metal Mould Casting technique.Crankshaft casting process design time, the somatotype of four cylinder crankshafts adopts horizontal parting to be main substantially, except the Structural Design Requirement of bent axle own, generally there is not mud core problem, and three cylinder crankshafts have the structure being different from four cylinder crankshafts, wherein three rod journals are all with 120 degree of angle distributions, therefore we are difficult to when design casting technique the integral level somatotype realizing three cylinder crankshafts, in order to realize the horizontal parting of bent axle, the method that we adopt mud core to combine, thus realize the horizontal parting of three cylinder crankshafts, but exist owing to there being a large amount of cores, adopt this explained hereafter bent axle out, percent defective is cast useless rate compared with four cylinder crankshafts obviously higher, there is shrinkage cavity in the connecting rod place that subject matter appears at mud core place, shrinkage porosite, the casting flaws such as disconnected core.Again because three cylinder crankshaft connecting rods are 120 degree of somatotypes, to adopt the casting technique of horizontal parting, need mud core under 2 connecting rod places wherein, cause the thermal center at connecting rod place too concentrated, often there are some shrinkage cavity and porosity defects at connecting rod thermal center place, also have part because of the insufficient strength of mud core or the problem such as lower core is not in place, mud core to be broken when mould assembling, occur that disconnected core foundry goods is scrapped.
Utility model content
For above-mentioned the deficiencies in the prior art, easily there is the casting flaw such as shrinkage cavity and porosity, disconnected core, rate of reducing the number of rejects and seconds in the insufficient strength of the mud core used when the utility model provides a kind of mud core for solving three cylinder crankshaft horizontal parting castings, connecting rod place.
The technical scheme that the utility model provides is: a kind of mud core for three cylinder crankshaft formative technologies, and described mud core comprises chill and layer of sand, and wherein chill outside is wrapped up by layer of sand.
Further in order to better play the effect of chill, make foundry goods can not make the higher and bad processing of its hardness because layer of sand crosses thin to foundry goods generation chilling action, also can not be blocked up because of layer of sand
Cause the thermal center at connecting rod place too concentrated, so being set greater than with the thickness of the layer of sand of foundry goods contact portion of chill outer wrapping is equaled 5 millimeters and be less than or equal to 6 millimeters.
Further in order to make chill more suitable and be placed in mud core, simultaneously in order to save production cost, chill adopts close casting material QT600 casting.
The beneficial effects of the utility model are: owing to arranging chill in mud core, solve the problem that the existence due to core a large amount of in mould causes the thermal center at connecting rod place too to be concentrated, thus make connecting rod thermal center place obtain the defects such as shrinkage cavity and porosity greatly to reduce and even disappear; Also enhance the intensity of mud core simultaneously, avoid the problem breaking mud core because lower core is not in place when mould assembling and occur scrapping disconnected core foundry goods.
figure of description
1. Fig. 1 is the mould structure schematic diagram of three cylinder crankshafts in the utility model embodiment;
2. Fig. 2 is the structural representation of mud core in the utility model embodiment;
3. Fig. 3 is the sectional view of mud core in the utility model embodiment.
In figure: 1-mud core, 2-mould, 11-chill, 12-layer of sand, 21-mud core groove.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment one:
As shown in Figure 1 to Figure 3, a kind of mud core 1 for three cylinder crankshaft formative technologies, mud core 1 comprises the layer of sand 12 of chill 11 and chill 11 outer wrapping, and mud core 1 is arranged in the mud core groove 21 on mould 2.Chill 11 outer wrapping be 5 millimeters with the thickness of the layer of sand of foundry goods contact portion, the casting material of chill 11 is QT600 casting.
Embodiment two:
In the present embodiment, chill 11 outer wrapping be 5.5 millimeters with the thickness of the layer of sand of foundry goods contact portion, other are with embodiment one.
Embodiment three:
In the present embodiment, chill 11 outer wrapping be 6 millimeters with the thickness of the layer of sand of foundry goods contact portion, other are with embodiment one.
Claims (3)
1. for a mud core for three cylinder crankshaft formative technologies, it is characterized in that: described mud core comprises chill and layer of sand, wherein chill outside is wrapped up by layer of sand.
2. a kind of mud core for three cylinder crankshaft formative technologies according to claim 1, is characterized in that: described chill outer wrap with the thickness of the layer of sand of foundry goods contact portion for being more than or equal to 5 millimeters and being less than or equal to 6 millimeters.
3. a kind of mud core for three cylinder crankshaft formative technologies according to claim 1, is characterized in that: described chill is casting material QT600 casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420673500.7U CN204234675U (en) | 2014-11-13 | 2014-11-13 | A kind of mud core for three cylinder crankshaft formative technologies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420673500.7U CN204234675U (en) | 2014-11-13 | 2014-11-13 | A kind of mud core for three cylinder crankshaft formative technologies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204234675U true CN204234675U (en) | 2015-04-01 |
Family
ID=52764227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420673500.7U Expired - Fee Related CN204234675U (en) | 2014-11-13 | 2014-11-13 | A kind of mud core for three cylinder crankshaft formative technologies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204234675U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117600435A (en) * | 2024-01-17 | 2024-02-27 | 山西东鑫衡隆机械制造股份有限公司 | Crack elimination method for cast iron mold |
-
2014
- 2014-11-13 CN CN201420673500.7U patent/CN204234675U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117600435A (en) * | 2024-01-17 | 2024-02-27 | 山西东鑫衡隆机械制造股份有限公司 | Crack elimination method for cast iron mold |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204892871U (en) | A mould for casting parts | |
| CN103658504A (en) | Novel process for sand casting of aluminium alloy casting blanks | |
| CN103464684A (en) | Precise investment casting method | |
| CN204234675U (en) | A kind of mud core for three cylinder crankshaft formative technologies | |
| CN109158570A (en) | Tin plate internal densener is for preventing and treating vermicular cast iron cylinder head shrinkage porosite method | |
| CN106424577A (en) | Sand core device and method for preventing hot cracks during steel casting iron mold sand covering casting production | |
| CN103056306A (en) | Method for casting bearing seat | |
| CN205927013U (en) | A mould for casting valve body | |
| CN104942225A (en) | Full mold casting molten iron introducing type chill | |
| CN103447498A (en) | Casting method of rear axle housing of mining lorry | |
| CN105583374B (en) | A kind of method of production of large aluminum alloy closing casing | |
| CN103084546B (en) | A kind of pouring procedure of valve gap foundry goods | |
| CN205437059U (en) | Casting device of internal -combustion engine flywheel | |
| CN205761659U (en) | Prevent the cast structure of casting crack and plane deformation | |
| CN105642830A (en) | Formative technology for three-cylinder bent axle | |
| CN102274940A (en) | Centrifugal pouring method for water glass investment casting | |
| CN204685960U (en) | A kind of shrinkproof loose structure for aluminium alloy row oil pipe casting mold | |
| CN206952100U (en) | A kind of camshaft casting die | |
| CN202877489U (en) | Large-size steel roll cold forming die | |
| CN202291271U (en) | Combined type sand core for axle housing cast by V method | |
| CN204135286U (en) | Casting die | |
| CN102581251A (en) | Nodular cast iron crankshaft shrinkage porosity defect preventer | |
| CN104923740A (en) | Perpendicular line casting system of automobile brake support type castings | |
| CN202539520U (en) | Shrinkage porosity prevention device of nodular cast iron crankshaft | |
| CN204276816U (en) | A kind of rotor sand mold of improvement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150401 Termination date: 20181113 |