CN212042592U - Centrifugal casting die for semi-dry bainite cylinder sleeve - Google Patents
Centrifugal casting die for semi-dry bainite cylinder sleeve Download PDFInfo
- Publication number
- CN212042592U CN212042592U CN202020626916.9U CN202020626916U CN212042592U CN 212042592 U CN212042592 U CN 212042592U CN 202020626916 U CN202020626916 U CN 202020626916U CN 212042592 U CN212042592 U CN 212042592U
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- Prior art keywords
- dry
- blank
- bainite
- semi
- cooling
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- 229910001563 bainite Inorganic materials 0.000 title claims abstract description 27
- 238000009750 centrifugal casting Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 42
- 230000007704 transition Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000005266 casting Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model belongs to the technical field of the cylinder jacket casting die, specifically, relate to a half dry bainite cylinder jacket centrifugal casting mould, the inner chamber of mould and half dry bainite cylinder jacket's blank surface phase-match, the inner chamber opening is big, inside little, and the main aspects of inner chamber and the transition position of tip are equipped with the toper changeover portion, the annular is provided with first cooling bath and second cooling bath on the outer circumference of mould, first cooling bath is corresponding with the position of toper changeover portion, the second cooling bath is corresponding with the thin wall position of half dry bainite cylinder jacket. The device is simple and convenient to manufacture, convenient to process and low in cost, achieves the purpose of controlling the cooling speed of different parts of the blank through simple and convenient improvement of the die, and further reduces the hardness difference of the different parts of the blank, and realizes the stable control of the quality of the cylinder sleeve blank.
Description
Technical Field
The utility model belongs to the technical field of the cylinder jacket casting mold, specifically, relate to a half dry bainite cylinder jacket centrifugal casting mold.
Background
Centrifugal casting is widely applied to sleeve parts as a casting mode, and is also widely applied to cylinder sleeve production. During centrifugal casting, a layer of coating is sprayed in a die cavity of a die before molten metal is poured into the die, and the coating has the main functions of heat preservation and convenience in demoulding, so that the centrifugal casting process generally comprises three processes of spraying, pouring and forming.
However, when the wall thickness of the cylinder liner is greatly different, the solidification speeds of the large end and the small end of the blank are different, so that the mass deviation of the large end and the small end of the blank is larger, and the hardness difference is larger. And the material of the cylinder sleeve is mostly made of high-tensile and high-hardness high-strength cast iron along with the trend of light weight development of the current engine, bainite is one of the more popular materials at present, but the high alloy content in the bainite can cause the flowing performance of the cylinder sleeve to be poor in the pouring process, the hardness difference values of different parts of the cylinder sleeve to be continuously increased, and the stable control of the blank quality of the cylinder sleeve is not facilitated.
Therefore, a centrifugal casting die for the semi-dry bainite cylinder sleeve is needed to reduce the hardness difference of different parts of a blank and realize stable control of the quality of the blank of the semi-dry bainite cylinder sleeve.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a semi-dry bainite cylinder jacket centrifugal casting mould, the inner chamber of mould and semi-dry bainite cylinder jacket's blank surface phase-match, the inner chamber opening is big, inside little, and the transition position of the main aspects and the tip of inner chamber is equipped with the toper changeover portion, the annular is provided with first cooling tank and second cooling tank on the outer circumference of mould, first cooling tank is corresponding with the position of toper changeover portion, the second cooling tank is corresponding with the thin wall position of semi-dry bainite cylinder jacket.
Preferably, the groove depth of the first cooling groove is smaller than that of the second cooling groove, so that the cooling speed of the large end and the small end of the blank are consistent.
Preferably, the second cooling tank comprises a plurality of tooth-shaped grooves which are not equally divided and are gradually deepened, and the contact areas of cooling water at different parts are changed through the tooth-shaped grooves, so that the cooling effect of different parts of the cylinder sleeve is improved, and the purpose of improving the hardness difference of a blank is achieved.
The utility model discloses still including other subassemblies or structures that can make this half dry bainite cylinder jacket centrifugal casting mould normal use, be the conventional technological means in this field.
The utility model discloses an operating principle is, the transition position at the main aspects of mould inner chamber and tip sets up the toper changeover portion and is used for satisfying the requirement from the drawing of patterns, make the whole excircle of blank present a little tapering design, when centrifugal casting, the iron liquid after melting gets into in the mould of having spouted coating in advance from the main aspects pouring of inner chamber, the high-speed rotatory in-process of casting machine is through the thermal solidification formation solid-state blank that gives off the foundry goods, the heat dissipation mainly realizes through the thermal radiation of blank main aspects direct with air contact and the heat-conduction of transmitting for the mould through coating. The semi-dry bainite cylinder sleeve has large end wall thickness difference, so the blank has large end diameter difference, the large end is in direct contact with the outside air, the heat dissipation is fast, the wall thickness of the mold corresponding to the small end is thick, the cooling speed is slow, the contact area of cooling water at different parts of the mold is changed through the arrangement of the first cooling tank and the second cooling tank, the cooling effect at different parts of the semi-dry bainite cylinder sleeve is further improved, the slow part of the cooling part of the blank is accelerated and cooled by increasing the contact area of the cooling water at the slow part of the mold, the cooling speed of the large end and the small end of the blank is consistent, and the hardness difference of different parts of the blank is further reduced.
The beneficial effects of the utility model are that, the preparation is simple and convenient, be convenient for processing, low cost, reaches the purpose of the different position cooling rate of control blank through the simple and convenient improvement of mould, and then in order to reduce the hardness difference at the different positions of blank, realizes the stable control of the blank quality of half dry bainite cylinder jacket.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The present invention will be described more clearly with reference to the accompanying drawings and specific embodiments in the embodiments of the present invention, and the description herein is only for explaining the present invention, but not for limiting the present invention. Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by those skilled in the art without creative efforts should be included in the protection scope of the present invention.
Examples
As shown in fig. 1, the utility model provides a semi-dry bainite cylinder jacket centrifugal casting mould, the inner chamber of mould 1 and semi-dry bainite cylinder jacket 2's blank 7's surface phase-match, the inner chamber opening is big, inside little, and the main aspects of inner chamber and the transition position of tip are equipped with toper changeover portion 3, the annular is provided with first cooling bath 4 and second cooling bath 5 on the outer circumference of mould 1, first cooling bath 4 is corresponding with the position of toper changeover portion 3, second cooling bath 5 is corresponding with semi-dry bainite cylinder jacket 2's thin wall position, the groove depth of first cooling bath 4 is less than the groove depth of second cooling bath 5, second cooling bath 5 includes a plurality of inequality and the tooth-shaped groove that deepens gradually, makes the cooling rate of blank 7 big tips unanimous.
The utility model discloses an operating principle is, the transition position of the main aspects and the tip of 1 inner chamber of mould sets up toper changeover portion 3 and is used for satisfying the requirement from the drawing of patterns, make the whole excircle of blank 7 present a little tapering design, when centrifugal casting, molten iron after melting gets into in the mould 1 that has spouted coating 6 in advance from the main aspects pouring of inner chamber, the solidification that gives off the foundry goods at the high-speed rotatory in-process of casting machine through thermal forms solid-state blank 7, the heat dissipation is mainly realized through the heat radiation of the main aspects direct and air contact of blank 7 and the heat-conduction that transmits for mould 1 through coating 6. Because the wall thickness difference of the big end and the small end of the semi-dry bainite cylinder sleeve 2 is large, the difference of the big end and the small end of the blank 7 is also large, the big end is in direct contact with the outside air, the heat dissipation is fast, the wall thickness of the mould corresponding to the small end is thick, the cooling speed is slow, the contact area of cooling water at different parts of the mould 1 is changed through the arrangement of the first cooling groove 4 and the second cooling groove 5, the cooling effect at different parts of the semi-dry bainite cylinder sleeve 2 is further improved, the slow part of the cooling part of the blank 7 is accelerated and cooled by increasing the contact area of the cooling water at the slow part of the mould 1, the cooling speed of the big end and the small end of the blank 7 is consistent, and the hardness difference of.
The foregoing description of the embodiments of the invention has been presented for purposes of illustration and not limitation, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.
Claims (3)
1. The utility model provides a half dry bainite cylinder jacket centrifugal casting mould which characterized in that: the inner cavity of the die is matched with the outer surface of a blank of the semi-dry bainite cylinder sleeve, the inner cavity is large in opening and small in inside, tapered transition sections are arranged at transition positions of a large end and a small end of the inner cavity, a first cooling groove and a second cooling groove are annularly arranged on the outer circumference of the die, the first cooling groove corresponds to the tapered transition sections, and the second cooling groove corresponds to the thin-wall portion of the semi-dry bainite cylinder sleeve.
2. The semi-dry bainite cylinder liner centrifugal casting mold according to claim 1, wherein: the groove depth of the first cooling groove is smaller than that of the second cooling groove.
3. The semi-dry bainite cylinder liner centrifugal casting mold according to claim 2, wherein: the second cooling groove includes a plurality of tooth-shaped grooves which are not equally divided and are gradually deepened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020626916.9U CN212042592U (en) | 2020-04-23 | 2020-04-23 | Centrifugal casting die for semi-dry bainite cylinder sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020626916.9U CN212042592U (en) | 2020-04-23 | 2020-04-23 | Centrifugal casting die for semi-dry bainite cylinder sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212042592U true CN212042592U (en) | 2020-12-01 |
Family
ID=73509550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020626916.9U Expired - Fee Related CN212042592U (en) | 2020-04-23 | 2020-04-23 | Centrifugal casting die for semi-dry bainite cylinder sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212042592U (en) |
-
2020
- 2020-04-23 CN CN202020626916.9U patent/CN212042592U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20201201 |