CN220970690U - Casting process structure for solving shrinkage porosity problem of vermicular cast iron diesel engine cylinder cover - Google Patents
Casting process structure for solving shrinkage porosity problem of vermicular cast iron diesel engine cylinder cover Download PDFInfo
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- CN220970690U CN220970690U CN202322610986.1U CN202322610986U CN220970690U CN 220970690 U CN220970690 U CN 220970690U CN 202322610986 U CN202322610986 U CN 202322610986U CN 220970690 U CN220970690 U CN 220970690U
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- Prior art keywords
- cylinder cover
- oil sprayer
- casting process
- hole
- process structure
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- 238000005266 casting Methods 0.000 title claims abstract description 22
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a casting process structure for solving shrinkage porosity of a cylinder cover oil sprayer hole of a vermicular cast iron diesel engine, which comprises a cylinder cover blank, wherein the cylinder cover blank is provided with an oil sprayer hole which is solid, and a riser is arranged on the oil sprayer hole for feeding. According to the casting process structure, the hollow oil sprayer hole of the cylinder cover is replaced by a solid oil sprayer hole, and the feeding capacity is improved well by adding the small riser, so that the shrinkage ratio of the oil sprayer hole of the cylinder cover of a certain model is reduced to be within 1% from 80% before.
Description
Technical Field
The utility model relates to the technical field of vermicular cast iron diesel engine cylinder cover casting, in particular to a casting process structure for solving shrinkage porosity of a vermicular cast iron diesel engine cylinder cover.
Background
At present, in the casting process of the cylinder cover, basically the hole positions of the oil injector are hot joint positions, so that the defects of shrinkage porosity, shrinkage cavity and the like are easy to occur. Through improving exhaust and test chill, can not effectively improve this kind of defect, and this kind of defect often appears subcutaneously, and the outward appearance is difficult for finding, only can see after processing, like this not only influences production efficiency, can also increase cost such as manual work, material, processing.
When the cylinder cover of a certain model is produced by the company, shrinkage porosity defects can occur at the position of an oil nozzle of the cylinder cover after processing, and the proportion is about 80%, so that a casting process structure for solving the shrinkage porosity problem of the cylinder cover of the vermicular cast iron diesel engine is needed.
Disclosure of utility model
The utility model provides a casting process structure for solving shrinkage porosity of a cylinder cover oil sprayer hole of a vermicular cast iron diesel engine.
The technical scheme adopted by the utility model is that the casting process structure for solving the shrinkage porosity problem of the vermicular graphite cast iron diesel engine cylinder cover comprises a cylinder cover blank, wherein an oil sprayer hole is formed in the cylinder cover blank, the oil sprayer hole is solid, and riser feeding is arranged on the oil sprayer hole.
Further, the diameter of the part of the lower end of the riser, which is in contact with the fuel injector hole, is smaller than the outer diameter of the fuel injector hole.
According to the casting process structure, the hollow oil sprayer hole of the cylinder cover is replaced by a solid oil sprayer hole, and the feeding capacity is improved well by adding the small riser, so that the shrinkage ratio of the oil sprayer hole of the cylinder cover of a certain model is reduced to be within 1% from 80% before.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a top view of the present utility model;
FIG. 3 is a sectional view taken along line B-B of FIG. 2;
FIG. 4 is a top view of a prior art cylinder head blank;
Fig. 5 is a sectional view taken along the direction A-A in fig. 4.
In the figure: 1. a cylinder cover blank; 2. a fuel injector orifice; 3. and (5) riser.
Detailed Description
In order to better understand the purpose, structure and function of the utility model, the following describes in detail a casting process structure for solving shrinkage porosity of a vermicular cast iron diesel engine cylinder cover with reference to the accompanying drawings.
As shown in figures 1-3, the casting process structure for solving shrinkage porosity of the vermicular graphite cast iron diesel engine cylinder cover comprises a cylinder cover blank 1, wherein an oil sprayer hole 2 is formed in the cylinder cover blank 1, the oil sprayer hole 2 is solid, and a riser 3 is arranged on the oil sprayer hole 2 for feeding.
In this embodiment, the diameter of the part of the lower end of the riser 3, which contacts the injector hole 2, is smaller than the outer diameter of the injector hole to form a step, so that the riser 3 can be identified when the casting is cleaned.
Referring to fig. 4 and 5, in the original casting process of the cylinder head blank 1, the injector hole 2 is in a through hole state, so that feeding cannot be performed well during casting, and shrinkage porosity defects are easy to occur in the hole.
The utility model solves the problem that the shrinkage porosity of the oil sprayer hole 2 is that the oil sprayer hole 2 is cast by the original casting process, and the oil sprayer hole 2 is processed instead. The specific method is as follows: the sand core head of the oil sprayer hole 2 formed on the water supply channel is removed, so that the position of the oil sprayer hole 2 becomes solid during pouring, the oil sprayer hole 2 is formed through processing in the later period, and the feeding riser 3 is additionally arranged at the position of the oil sprayer hole 2 during pouring for feeding, so that the shrinkage cavity problem of the oil sprayer hole 2 of the cylinder cover can be effectively solved.
The injector hole 2 is changed from hollow to solid, and finally, the solid injector hole 2 is formed by processing and drilling, and the feeding capacity is well improved by combining the feeding heads 3 of the solid injector hole 2, so that the processing cost is improved slightly, but the overall yield of castings is improved by 80%, and the casting is worth popularizing.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (2)
1. The casting process structure for solving shrinkage porosity of the vermicular graphite cast iron diesel engine cylinder cover comprises a cylinder cover blank (1), wherein an oil sprayer hole (2) is formed in the cylinder cover blank (1), and the casting process structure is characterized in that the oil sprayer hole (2) is solid, and a riser (3) is arranged on the oil sprayer hole (2) for feeding.
2. The casting process structure for solving the shrinkage porosity problem of the vermicular cast iron diesel engine cylinder cover according to claim 1, wherein the lower end of the riser (3) is in contact with the oil injector hole (2) and the diameter of the lower end is smaller than the outer diameter of the oil injector hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322610986.1U CN220970690U (en) | 2023-09-26 | 2023-09-26 | Casting process structure for solving shrinkage porosity problem of vermicular cast iron diesel engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322610986.1U CN220970690U (en) | 2023-09-26 | 2023-09-26 | Casting process structure for solving shrinkage porosity problem of vermicular cast iron diesel engine cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220970690U true CN220970690U (en) | 2024-05-17 |
Family
ID=91063850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322610986.1U Active CN220970690U (en) | 2023-09-26 | 2023-09-26 | Casting process structure for solving shrinkage porosity problem of vermicular cast iron diesel engine cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220970690U (en) |
-
2023
- 2023-09-26 CN CN202322610986.1U patent/CN220970690U/en active Active
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| GR01 | Patent grant |