CN114309545A - Casting mold for excircle alloy layer of planet wheel bearing - Google Patents
Casting mold for excircle alloy layer of planet wheel bearing Download PDFInfo
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- CN114309545A CN114309545A CN202111455047.3A CN202111455047A CN114309545A CN 114309545 A CN114309545 A CN 114309545A CN 202111455047 A CN202111455047 A CN 202111455047A CN 114309545 A CN114309545 A CN 114309545A
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- wheel bearing
- excircle
- planet wheel
- alloy layer
- pouring
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Abstract
The invention discloses a casting mold for an excircle alloy layer of a planet wheel bearing, which comprises a cylindrical mold body, wherein a casting bottom plate is arranged at the bottom of the mold body, oblique pouring channels are arranged in two opposite side walls of the mold body, a pouring gate is arranged at the top of each oblique pouring channel, a horizontal pouring channel is arranged on the side surface of each oblique pouring channel, and the horizontal pouring channel penetrates through the inner wall of the mold body. The horizontal pouring channel has the functions of filtering oxidation slag and stabilizing flow, and can also effectively control the escape of gas during alloy liquid filling, so that the performance of an excircle alloy layer of the planet wheel bearing is improved.
Description
Technical Field
The invention belongs to the technical field of casting molds, and relates to a casting mold for an excircle alloy layer of a planet wheel bearing.
Background
The sliding bearing is generally divided into a radial sliding bearing, a thrust sliding bearing and a planet wheel bearing, the structure of the radial sliding bearing is to cast a tin-based alloy layer on an inner hole of a high-quality carbon structure steel substrate, the casting process is generally centrifugal casting and is finished on a centrifugal casting machine, and the casting quality is easy to control. The thrust sliding bearing tin-based alloy layer is designed on the end surface, the planet wheel bearing tin-based alloy layer is designed on the excircle and cannot be finished in a centrifugal casting mode, and the casting process is gravity casting.
After the tin-based alloy layer of the planet wheel bearing is poured, the quality of the inner part and the surface of the alloy is mainly ensured through a pouring die structure, a simple gravity pouring tool is generally adopted at present, but after the tin-based alloy layer is poured by the gravity pouring tool, the bonding force between the excircle alloy layer and the steel matrix of the inner high-quality carbon structure is low, and the alloy has the pouring defects of shrinkage porosity, inclusion, air holes and the like, so that the pouring quality requirement of an important product tin-based alloy cannot be met.
Disclosure of Invention
The invention aims to provide a planet wheel bearing excircle alloy layer casting mould, which solves the problems that the casting defects of a planet wheel bearing excircle tin-based alloy layer cast by the existing gravity casting tool are more, and the binding force of a tin-based alloy and a carbon structural steel matrix is lower.
The technical scheme includes that the casting mold for the excircle alloy layer of the planet wheel bearing comprises a cylindrical mold body, wherein a casting bottom plate is arranged at the bottom of the mold body, oblique pouring channels are arranged in two opposite side walls of the mold body, a pouring gate is arranged at the top of each oblique pouring channel, a horizontal pouring channel is arranged on the side face of each oblique pouring channel, and the horizontal pouring channel penetrates through the inner wall of the mold body.
Wherein, the inclined pouring gate forms an angle of 8-12 degrees with the vertical direction.
The side of the oblique pouring channel is provided with at least three horizontal pouring channels.
The width of the horizontal pouring gate is 3 mm-5 mm.
The included angle between the two opposite side walls of the pouring gate is 120 degrees.
The center of the pouring bottom plate is provided with a water outlet channel.
The bottom of the inner wall of the die body is provided with a groove.
The horizontal pouring gate with the width of 3-5 mm has the functions of filtering oxidation slag and stabilizing flow, can effectively reduce the oxidation slag from entering a middle cavity between a carbon structural steel matrix and a die body, and can also effectively control the escape of gas during filling of alloy liquid, so that the performance of an excircle alloy layer of the planet wheel bearing is improved.
Drawings
FIG. 1 is a schematic structural diagram of an excircle alloy layer casting mold of a planet wheel bearing according to the present invention;
FIG. 2 is a schematic top view of an excircle alloy layer casting mold of a planet wheel bearing according to the present invention;
FIG. 3 is a sectional view of an excircle alloy layer casting mold of a planet wheel bearing according to the present invention;
FIG. 4 is a schematic view of the use state of the casting mold for the excircle alloy layer of the planet wheel bearing.
In the figure, 1, a mould body, 2, an inclined pouring channel, 3, a pouring gate, 4, a horizontal pouring channel, 5, a pouring bottom plate, 6, a water outlet channel, 7, a groove, 8, a carbon structural steel matrix and 9, a cooling water pipe.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a casting mould for an excircle alloy layer of a planet wheel bearing, which comprises a cylindrical mould body 1, wherein a casting bottom plate 5 is arranged at the bottom of the mould body 1, a circular water outlet channel 6 is arranged at the center of the casting bottom plate 5, an inclined pouring gate 2 is arranged inside two opposite side walls of the mould body 1, a pouring gate 3 is arranged at the top of the inclined pouring gate 2, a horizontal pouring gate 4 is arranged on the side surface of the inclined pouring gate, and the horizontal pouring gate 4 penetrates through the inner wall of the mould body 1. The bottom of the inner wall of the die body 1 is provided with a groove 7 which is convenient to be embedded with a carbon structural steel matrix in the planet wheel bearing.
The inclined pouring gate 2 forms an included angle of 10 degrees with the vertical direction, and the design of the inclined pouring gate reduces the generation of oxidation slag caused by splashing of the alloy liquid. The included angle between the two opposite side walls of the pouring gate 3 is 120 degrees. Four horizontal pouring channels 4 are arranged on the side faces of the oblique pouring channels 2, the width of each horizontal pouring channel 4 is 4mm, so that oxidation slag in alloy liquid can be conveniently filtered, and a steady flow effect is achieved (see figure 3).
When the excircle alloy layer casting mould of the planet wheel bearing is used, referring to fig. 4, a preheated carbon structure steel substrate 8 in the planet wheel bearing is placed on a casting bottom plate 5, the circle center of the carbon structure steel substrate is coincided with the circle center of a water outlet channel 6, a cooling water pipe 9 is inserted into the middle of the carbon structure steel substrate, one end of the cooling water pipe is connected with a tap water valve, and the other end of the cooling water pipe is opposite to the water outlet channel 6; then, the mold body 1 is sleeved outside the carbon structure steel matrix, so that the axial lead of the mold body 1 is coincident with the axial lead of the carbon structure steel matrix, the protruding part at the bottom of the side wall of the carbon structure steel matrix is embedded in the groove 7, molten tin-based alloy is poured in from the pouring gate 3, the molten tin-based alloy enters the horizontal pouring gate 4 along the two inclined pouring gates 2 and flows into a middle cavity of the carbon structure steel matrix and the mold body through the horizontal pouring gate 4, the alloy liquid is filled from bottom to top to facilitate the escape of gas in the alloy liquid, finally, a tap water valve connected with a cooling water pipe is opened for cooling, and inner hole cooling ensures the solidification sequence of the tin-based alloy from the surface of the carbon structure steel matrix inside the planet wheel bearing to the inner wall of the mold body.
Claims (7)
1. The utility model provides a planet wheel bearing excircle alloy-layer casting mould, its characterized in that, includes cylindric mould body (1), and mould body (1) bottom is provided with pouring bottom plate (5), and mould body (1) relative both sides wall is inside to be provided with oblique watering (2), and oblique watering (2) top is provided with runner (3), and the side is provided with horizontal watering (4), and horizontal watering (4) run through mould body (1) inner wall.
2. The casting mold for the excircle alloy layer of the planet wheel bearing according to claim 1, wherein the included angle between the inclined pouring channel (2) and the vertical direction is 8-12 degrees.
3. A casting mould for an excircle alloy layer of a planet wheel bearing according to claim 1, characterized in that the oblique pouring channel (2) is provided with at least three horizontal pouring channels (4) on the side.
4. The casting mold for the excircle alloy layer of the planet wheel bearing according to claim 3, wherein the width of the horizontal pouring channel (4) is 3 mm-5 mm.
5. A planetary wheel bearing outer circular alloy layer casting mould according to claim 1, characterized in that the included angle between the opposite side walls of the pouring gate (3) is 120 °.
6. The casting mold for the excircle alloy layer of the planet wheel bearing according to claim 1, wherein the center of the casting bottom plate (5) is provided with a water outlet channel (6).
7. The casting mold for the excircle alloy layer of the planet wheel bearing according to claim 1, wherein the bottom of the inner wall of the mold body (1) is provided with a groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455047.3A CN114309545A (en) | 2021-12-01 | 2021-12-01 | Casting mold for excircle alloy layer of planet wheel bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111455047.3A CN114309545A (en) | 2021-12-01 | 2021-12-01 | Casting mold for excircle alloy layer of planet wheel bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114309545A true CN114309545A (en) | 2022-04-12 |
Family
ID=81048388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111455047.3A Pending CN114309545A (en) | 2021-12-01 | 2021-12-01 | Casting mold for excircle alloy layer of planet wheel bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114309545A (en) |
-
2021
- 2021-12-01 CN CN202111455047.3A patent/CN114309545A/en active Pending
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