CN216758123U - Gravity casting mold for tin-based alloy on excircle of planet wheel bearing - Google Patents
Gravity casting mold for tin-based alloy on excircle of planet wheel bearing Download PDFInfo
- Publication number
- CN216758123U CN216758123U CN202123006756.1U CN202123006756U CN216758123U CN 216758123 U CN216758123 U CN 216758123U CN 202123006756 U CN202123006756 U CN 202123006756U CN 216758123 U CN216758123 U CN 216758123U
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- Prior art keywords
- tin
- wheel bearing
- planet wheel
- excircle
- based alloy
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 41
- 239000000956 alloy Substances 0.000 title claims abstract description 41
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000005266 casting Methods 0.000 title claims abstract description 28
- 230000005484 gravity Effects 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003643 water by type Substances 0.000 claims 4
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- 239000011159 matrix material Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 229910000746 Structural steel Inorganic materials 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000009750 centrifugal casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- Sliding-Contact Bearings (AREA)
Abstract
The utility model discloses a gravity casting mold for tin-based alloy at the excircle 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 utility model belongs to the technical field of casting molds, and relates to a gravity casting mold for a tin-based alloy on an excircle 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 pour a tin-based alloy layer on an inner hole of a high-quality carbon structural steel substrate, the pouring process is generally centrifugal pouring, the pouring is finished on a centrifugal pouring machine, and the pouring quality is easy to control. The thrust sliding bearing tin-based alloy layer is designed on the end face, the planet wheel bearing tin-based alloy layer is designed on the excircle and cannot be finished in a centrifugal casting mode, and the pouring process is gravity pouring.
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.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a gravity casting mold for a cylindrical tin-based alloy of a planet wheel bearing, which solves the problems that the cylindrical tin-based alloy layer of the planet wheel bearing cast by the existing gravity casting tool has more casting defects and the bonding force of the tin-based alloy and a carbon structural steel substrate is lower.
The technical scheme includes that the gravity casting mold for the tin-based alloy on the excircle 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 inclined pouring gate is provided with at least three horizontal pouring gates.
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 a gravity casting mold for tin-based alloy at the excircle of a planet wheel bearing according to the utility model;
FIG. 2 is a schematic structural diagram of a top view of a gravity casting mold for tin-based alloy at the excircle of a planet wheel bearing according to the present invention;
FIG. 3 is a cross-sectional view of a gravity casting mold for tin-based alloy at the excircle of a planet wheel bearing according to the present invention;
FIG. 4 is a schematic view of the use state of the gravity casting mold for tin-based alloy at the excircle 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 utility model relates to a gravity casting mold for tin-based alloy on the excircle of a planet wheel bearing, which comprises a cylindrical mold body 1, wherein the bottom of the mold body 1 is provided with a casting bottom plate 5, the center of the casting bottom plate 5 is provided with a circular water outlet channel 6, two opposite side walls of the mold body 1 are internally provided with an inclined pouring gate 2, the top of the inclined pouring gate 2 is provided with a pouring gate 3, the side surfaces of the inclined pouring gate are provided with a horizontal pouring gate 4, and the horizontal pouring gate 4 penetrates through the inner wall of the mold 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 gravity casting mold for the tin-based alloy on the excircle of the planet wheel bearing is used, referring to fig. 4, a preheated carbon structure steel matrix 8 in the planet wheel bearing is placed on a casting bottom plate 5, the circle center of the carbon structure steel matrix 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 matrix, 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 tin base alloy gravity casting mould which 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 to one side waters (2), waters (2) top to one side and is provided with runner (3), and the side is provided with level and waters (4), and level waters (4) and runs through mould body (1) inner wall.
2. The gravity casting mold for tin-based alloy on the excircle of the planet wheel bearing, according to claim 1, is characterized in that the included angle between the inclined pouring channel (2) and the vertical direction is 8-12 degrees.
3. A gravity casting mould for a cylindrical tin-based alloy of a planet wheel bearing according to claim 1, characterized in that the inclined pouring channel (2) is provided with at least three horizontal pouring channels (4) on the side surface.
4. The gravity casting mold for the tin-based alloy at the excircle of the planet wheel bearing, according to the claim 3, is characterized in that the width of the horizontal pouring channel (4) is 3 mm-5 mm.
5. A gravity casting mold for tin-based alloy on the excircle of a planet wheel bearing according to claim 1, characterized in that the included angle between the opposite side walls of the pouring gate (3) is 120 °.
6. The gravity casting mold for the tin-based alloy at the excircle of the planet wheel bearing, according to claim 1, is characterized in that a water outlet channel (6) is formed in the center of the casting bottom plate (5).
7. The gravity casting mold for the tin-based alloy on the excircle of the planet wheel bearing, according to the claim 1, is characterized in that 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 |
|---|---|---|---|
| CN202123006756.1U CN216758123U (en) | 2021-12-01 | 2021-12-01 | Gravity casting mold for tin-based alloy on excircle of planet wheel bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123006756.1U CN216758123U (en) | 2021-12-01 | 2021-12-01 | Gravity casting mold for tin-based alloy on excircle of planet wheel bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216758123U true CN216758123U (en) | 2022-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123006756.1U Active CN216758123U (en) | 2021-12-01 | 2021-12-01 | Gravity casting mold for tin-based alloy on excircle of planet wheel bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216758123U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309545A (en) * | 2021-12-01 | 2022-04-12 | 中国船舶重工集团公司第十二研究所 | Casting mold for excircle alloy layer of planet wheel bearing |
-
2021
- 2021-12-01 CN CN202123006756.1U patent/CN216758123U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309545A (en) * | 2021-12-01 | 2022-04-12 | 中国船舶重工集团公司第十二研究所 | Casting mold for excircle alloy layer of planet wheel bearing |
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