CN202079246U - Casting head for cast cylinder head - Google Patents
Casting head for cast cylinder head Download PDFInfo
- Publication number
- CN202079246U CN202079246U CN2011200879025U CN201120087902U CN202079246U CN 202079246 U CN202079246 U CN 202079246U CN 2011200879025 U CN2011200879025 U CN 2011200879025U CN 201120087902 U CN201120087902 U CN 201120087902U CN 202079246 U CN202079246 U CN 202079246U
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- China
- Prior art keywords
- cylinder head
- cylindrical
- head
- drenching
- sand
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- Expired - Fee Related
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Abstract
A casting head for a cast cylinder head comprises cylindrical drenching inner pouring gates, a cover board, a U-shaped horizontal pouring channel, a straight pouring channel and top bright feed heads; two rows of cylindrical drenching inner pouring gates are arranged on the cover board; two top bright feed head lower parts are arranged at the top of the hot junction part on the inner sides of the two rows of cylindrical drenching inner pouring gates on the cover board; after the core made of furan resin-sand and positioned behind the cylinder head sand mold lower box is well laid down, and the upper parts of various cores are arranged in corresponding grooves; the U-shaped horizontal pouring channel communicated with the rows of cylindrical drenching inner pouring gates on the cover board is arranged in a cylinder head sand mold upper box; the straight pouring channel is arranged at a lengthways middle position on the U-shaped horizontal pouring channel; and two top bright feed head upper parts connected with the top bright feed head lower parts on the cover board are arranged. The drenching inner pouring gates enable the dispersion impact of liquid stream to be small, so as to avoid that the cores made of resin bonded sand are deformed due to large impact, and then the size of the wall thickness of the cylinder head is caused to be out of tolerance, and the tissue of the cylinder head is enabled to be compact due to solidification feeding from bottom up; the top bright feed heads play the role of exhaust before a cavity is full of hot metal; and after the cavity is full of hot metal, hot metal filled from the drenching inner pouring gates is charged into the top bright feed heads, so that the hot junction part of the cylinder head below the top bright feed heads can be fed advantageously, the wall thickness of the cylinder head is prevented from shrinkage cavity or shrinkage porosity, and the problem of leakage of the cylinder head can be avoided effectively.
Description
Technical field
The utility model relates to the little and strong casting cylinder cover dead head of feeding of a kind of casting technique measure setting, especially impulsive force.
Background technology
At present, for casting high-power diesel engine cylinder head, owing to be the vermicular cast iron material, the volume of resin sand fuse accounts for 60% of cylinder head volume, the many and complex structure of fuse; Cylinder head wall thickness dimension 10-75 millimeter, the thickness of wall thickness differs bigger, causes the overproof or heavy wall shrinkage cavity shrinkage porosity of wall thickness dimension easily.It is particularly important that the casting cylinder cover science is provided with dead head, makes the overproof and shrinkage cavity shrinkage porosity of cylinder head wall thickness dimension because of the dead head setting is not scientific and reasonable, causes a large amount of scrapping.
Summary of the invention
In order to overcome the overproof and shrinkage cavity shrinkage porosity of casting cylinder cover wall thickness dimension, the utility model provides a kind of casting cylinder cover dead head, and the little and feeding of this dead head molten iron impulsive force is strong, makes the qualified and heavy wall of cylinder head wall thickness dimension not have shrinkage cavity shrinkage porosity.
The technical scheme that its technical problem that solves the utility model adopts is: the dead head of casting cylinder cover is made up of the cylindrical ingate that drenches with rain, cover plate, U-shaped cross gate, sprue, top open riser, the a plurality of cylindrical ingates that drench with rain of two rows on the cover board are set, at the cylindrical top, the inboard thermojunction place of ingate that drenches with rain of cover plate two rows open riser lower part, two tops is set, cover plate covers at cylinder head sand mold nowel, descended resin sand to make, various fuses top in the corresponding recesses; The U-shaped cross gate that is connected with a plurality of cylindrical ingates that drench with rain of two rows on the cover plate is set in cylinder head sand mold top box, the longitudinal middle part position is provided with sprue on the U-shaped cross gate, and the open riser top, top that is connected with open riser lower part, top on the cover plate is set.The alignment pin location mould assembling of using with its moulding during the nowel mould assembling on the cylinder head sand mold.A plurality of cylindrical ingates that drench with rain make the liquid flow point impulsive force of loosing little, prevent from that fuse that resin sand is made is out of shape greatly because of impulsive force to cause the cylinder head wall thickness dimension overproof, and the interior molten iron of die cavity solidifies feeding from bottom to top, and that cylinder head is organized is fine and closely woven.The top open riser plays scavenging action before molten iron underfill die cavity, after molten iron was full of die cavity, the molten iron that newly charges into from the ingate that drenches with rain entered the top open riser, and feeding is solidified at the thermojunction place that is beneficial to cylinder head, prevents shrinkage cavity of cylinder head heavy wall and shrinkage porosite.Various fuses are made of phenol resin sand.
The beneficial effects of the utility model are, this casting cylinder cover dead head has prevented that the resin sand fuse is out of shape greatly because of impulsive force and has caused wall thickness dimension overproof and cause heavy wall shrinkage cavity and shrinkage porosite because of the riser feeding difference, effectively prevented the generation of cylinder head leakage problems, made cylinder head casting qualification rate improve more than 40%.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is a casting cylinder cover dead head structure chart.
Fig. 1 is the A-A cutaway view of Fig. 2.
Fig. 2 is the B-B cutaway view of Fig. 1.
Among the figure 1, cylinder head sand mold nowel, 2 cylinder head die cavities, 3, the ingate that drenches with rain, 4 cover plates, 5, the U-shaped cross gate, 6, sprue, 7, cylinder head sand mold top box, 8, the top open riser, 9, the thermojunction place.
The specific embodiment
Accompanying drawing is the casting cylinder cover dead head structure chart of 16V240 diesel engine.See in the accompanying drawing 1,2, descended the fuse of each resin sand making at 16V240 cylinder head sand mold nowel (1) after, cover the cover plate of two top open risers (8) lower part that 8 cylindrical ingates that drench with rain (3) is set and is communicated with top, cylinder head thermojunction place (9) on cylinder head die cavity (2) in the corresponding grooves, cover plate (4) is made of furan resin-sand.Be provided with the U-shaped cross gate (5) of sand mold nowel (1) relevant position at 16V240 cylinder head sand mold top box (7) and be communicated with 8 cylindrical ingates that drench with rain (3), the longitudinal middle part position is provided with sprue (6) and is communicated with on U-shaped cross gate (5), and two top open risers (8) top that is communicated with two top open risers (8) lower part is set.Alignment pin with gas making cylinder cap die cavity (2) usefulness when 16V240 cylinder head sand mold nowel (1) and sand mold top box (7) mould assembling is located mould assembling.The molten iron of chemical combination lattice of wriggling is incorporated into sprue (6), U-shaped cross gate (5) from cup, molten iron is diverted to 8 cylindrical ingates that drench with rain (3) and enters cylinder head die cavity (2), the diffusing impulsive force of molten iron liquid flow point is little, preventing that the resin sand fuse is out of shape greatly because of impulsive force causes the cylinder head wall thickness dimension overproof, and the molten iron in cylinder head die cavity (2) solidifies feeding from bottom to top, and that cylinder head is organized is fine and closely woven.Top open riser (8) is at preceding scavenging action of molten iron underfill cylinder head die cavity (2), the heating molten steel that enters from the ingate that drenches with rain (3) after being full of cylinder head die cavity (2) charges in the top open riser (8), and the heating molten steel in the top open riser (8) is beneficial to does feeding when solidify at cylinder head thermojunction place.
Claims (4)
1. casting cylinder cover dead head, form by the cylindrical ingate that drenches with rain, cover plate, U-shaped cross gate, sprue, top open riser, it is characterized in that: a plurality of cylindrical ingates that drench with rain of two rows on the cover board are set, at the cylindrical top, the inboard thermojunction place of ingate that drenches with rain of cover plate two rows open riser lower part, two tops is set, cover plate covers at cylinder head sand mold nowel, descended resin sand to make, various fuses top in the corresponding recesses; The U-shaped cross gate that is connected with a plurality of cylindrical ingates that drench with rain of two rows on the cover plate is set in cylinder head sand mold top box, the longitudinal middle part position is provided with sprue on the U-shaped cross gate, and the open riser top, top that is connected with open riser lower part, top on the cover plate is set.
2. casting cylinder cover dead head according to claim 1, it is characterized in that: cover plate is made of furan resin-sand.
3. casting cylinder cover dead head according to claim 1 is characterized in that: various fuses are made of phenol resin sand.
4. casting cylinder cover dead head according to claim 1 is characterized in that: have 8 cylindrical ingates that drench with rain to be communicated with the U-shaped cross gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200879025U CN202079246U (en) | 2011-03-29 | 2011-03-29 | Casting head for cast cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200879025U CN202079246U (en) | 2011-03-29 | 2011-03-29 | Casting head for cast cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202079246U true CN202079246U (en) | 2011-12-21 |
Family
ID=45339900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200879025U Expired - Fee Related CN202079246U (en) | 2011-03-29 | 2011-03-29 | Casting head for cast cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202079246U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145378A (en) * | 2011-03-18 | 2011-08-10 | 陈硕 | Pouring and feeding system of cylinder cover |
| CN109465399A (en) * | 2018-12-26 | 2019-03-15 | 广东富华铸锻有限公司 | A kind of reducing gearbox sand core structure and running gate system |
-
2011
- 2011-03-29 CN CN2011200879025U patent/CN202079246U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145378A (en) * | 2011-03-18 | 2011-08-10 | 陈硕 | Pouring and feeding system of cylinder cover |
| CN102145378B (en) * | 2011-03-18 | 2013-07-03 | 陈硕 | Pouring and feeding system of cylinder cover |
| CN109465399A (en) * | 2018-12-26 | 2019-03-15 | 广东富华铸锻有限公司 | A kind of reducing gearbox sand core structure and running gate system |
| CN109465399B (en) * | 2018-12-26 | 2023-11-21 | 广东富华铸锻有限公司 | Gating system with speed reducer shell sand core structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20120329 |