CN111842807A - Casting method of planet carrier - Google Patents
Casting method of planet carrier Download PDFInfo
- Publication number
- CN111842807A CN111842807A CN201910347398.9A CN201910347398A CN111842807A CN 111842807 A CN111842807 A CN 111842807A CN 201910347398 A CN201910347398 A CN 201910347398A CN 111842807 A CN111842807 A CN 111842807A
- Authority
- CN
- China
- Prior art keywords
- casting
- planet carrier
- temperature
- pouring
- molten steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C23/00—Tools; Devices not mentioned before for moulding
- B22C23/02—Devices for coating moulds or cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a casting method of a planet carrier, which comprises the following steps: cleaning and drying the planet carrier casting mould; coating a layer of release agent on the inner cavity of the casting mould; weighing steel ingot raw materials, and heating the steel ingot raw materials to molten steel in a molten state; heating the casting mould to 1400-1500 ℃, and keeping the temperature for 30-50 min; pouring the molten steel in the S30 into a casting mould; immediately pressurizing the casting mold at the constant temperature from the pouring gate after pouring, wherein the applied pressure is 0.02-0.025 MPa, and the pressurizing time is kept for 1.5-2 h; firstly, cooling a casting mold to 500-600 ℃, and keeping the temperature constant for 1-1.5 h; then cooling the casting mould to room temperature; and (4) demolding the cast planet carrier, and machining the planet carrier to form a finished planet carrier product. The casting method improves the utilization rate of steel, improves the casting precision, has high structural strength and improves the production efficiency.
Description
Technical Field
The invention relates to the field of casting, in particular to a casting method of a planet carrier.
Background
The planet wheel carrier is used as one of important parts in a planet wheel transmission system, and is applied to automobiles, fans and the like; in the prior art, the planet gear carrier can be damaged after being used for a long time, and once the planet gear carrier is damaged, the damage to the transmission system is avoided, the potential safety hazard to the whole transmission system is caused, and the defects of low utilization rate of raw materials, high production cost and insufficient structural strength in the casting of the conventional automobile planet gear carrier are overcome.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the casting method of the planet carrier, which improves the utilization rate of steel, improves the casting precision, has high structural strength and improves the production efficiency.
In order to achieve the above object, the present invention provides a casting method of a planet carrier, including the steps of:
s10: cleaning: cleaning and drying the planet carrier casting mould;
s20: coating a release agent: coating a layer of release agent on the inner cavity of the casting mould;
s30: obtaining molten steel: weighing steel ingot raw materials, heating the steel ingot raw materials to molten steel in a molten state, and carrying out heat preservation at 1600-1700 ℃ for 20-30 min;
s40: heating the mold: heating the casting mould to 1400-1500 ℃, and keeping the temperature for 30-50 min; pouring the molten steel in the S30 into a casting mould;
s50: pouring: immediately pressurizing the casting mold at the constant temperature from the pouring gate after pouring, wherein the applied pressure is 0.02-0.025 MPa, and the pressurizing time is kept for 1.5-2 h;
s60: and (3) cooling: firstly, cooling a casting mold to 500-600 ℃, and keeping the temperature constant for 1-1.5 h; then cooling the casting mould to room temperature;
S70: demolding: and (4) demolding the cast planet carrier, and machining the planet carrier to form a finished planet carrier product.
Preferably, in the step S30, in the smelting of the molten steel, after the temperature is reached, the spectral elements of the molten steel are analyzed and adjusted to meet the requirements.
Preferably, in step S30, the temperature of the molten steel is 1650 ℃ and the holding time is 25 min. .
Preferably, in step S40, the casting mold is heated to 1450 ℃ and held for 40 min.
Preferably, in step S50, the pressurizing force is 0.022MPa, and the pressurizing time is 1.7 h.
Preferably, in step S60, the casting mold is first cooled to 550 ℃ and kept at a constant temperature for 1.2 h.
Due to the adoption of the technical scheme, the invention has the following advantages: the casting method improves the utilization rate of steel, improves the casting precision, has high structural strength and improves the production efficiency.
Detailed Description
The present invention is further described below.
Example 1
The invention provides a casting method of a planet carrier, which comprises the following steps: s10: cleaning: cleaning and drying the planet carrier casting mould; s20: coating a release agent: coating a layer of release agent on the inner cavity of the casting mould; s30: obtaining molten steel: weighing steel ingot raw materials, heating the steel ingot raw materials to molten steel in a molten state, and carrying out heat preservation at 1600 ℃ for 20 min; s40: heating the mold: heating the casting mould to 1400 ℃, and keeping the temperature for 30 min; pouring the molten steel in the S30 into a casting mould; s50: pouring: immediately pressurizing the casting mold at the constant temperature from the pouring gate after pouring, wherein the applied pressure is 0.025MPa, and the pressurizing time is kept 1.5; s60: and (3) cooling: firstly, cooling a casting mold to 500 ℃, and keeping the temperature at 1; then cooling the casting mould to room temperature; s70: demolding: and (4) demolding the cast planet carrier, and machining the planet carrier to form a finished planet carrier product.
Example 2
The invention provides a casting method of a planet carrier, which comprises the following steps: s10: cleaning: cleaning and drying the planet carrier casting mould; s20: coating a release agent: coating a layer of release agent on the inner cavity of the casting mould; s30: obtaining molten steel: weighing steel ingot raw materials, heating the steel ingot raw materials to molten steel in a molten state, and carrying out heat preservation at the temperature of 1700 ℃ for 30 min; s40: heating the mold: heating the casting mould to 1500 ℃, and keeping the temperature for 50 min; pouring the molten steel in the S30 into a casting mould; s50: pouring: immediately pressurizing the casting mold at the constant temperature from the pouring gate after pouring, wherein the applied pressure is 0.025MPa, and the pressurizing time is kept for 2 h; s60: and (3) cooling: firstly, cooling a casting mould to 600 ℃, and keeping the constant temperature for 1.5 h; then cooling the casting mould to room temperature; s70: demolding: and (4) demolding the cast planet carrier, and machining the planet carrier to form a finished planet carrier product.
Example 3
The invention provides a casting method of a planet carrier, which comprises the following steps: s10: cleaning: cleaning and drying the planet carrier casting mould; s20: coating a release agent: coating a layer of release agent on the inner cavity of the casting mould; s30: obtaining molten steel: weighing steel ingot raw materials, heating the steel ingot raw materials to molten steel in a molten state, and carrying out heat preservation at the temperature of 1650 ℃ for 25 min; s40: heating the mold: heating the casting mould to 1450 deg.C, and keeping the temperature for 40 min; pouring the molten steel in the S30 into a casting mould; s50: pouring: immediately pressurizing the casting mold at the constant temperature from the pouring gate after pouring, wherein the applied pressure is 0.022MPa, and the pressurizing time is kept for 1.7 h; s60: and (3) cooling: firstly, cooling the casting mould to 550 ℃, and keeping the constant temperature for 1.2 h; then cooling the casting mould to room temperature; s70: demolding: and (4) demolding the cast planet carrier, and machining the planet carrier to form a finished planet carrier product.
Due to the adoption of the technical scheme, the invention has the following advantages: the casting method improves the utilization rate of steel, improves the casting precision, has high structural strength and improves the production efficiency.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (6)
1. A casting method of a planet carrier is characterized by comprising the following steps:
s10: cleaning: cleaning and drying the planet carrier casting mould;
s20: coating a release agent: coating a layer of release agent on the inner cavity of the casting mould;
s30: obtaining molten steel: weighing steel ingot raw materials, heating the steel ingot raw materials to molten steel in a molten state, and carrying out heat preservation at 1600-1700 ℃ for 20-30 min;
s40: heating the mold: heating the casting mould to 1400-1500 ℃, and keeping the temperature for 30-50 min; pouring the molten steel in the S30 into a casting mould;
s50: pouring: immediately pressurizing the casting mold at the constant temperature from the pouring gate after pouring, wherein the applied pressure is 0.02-0.025 MPa, and the pressurizing time is kept for 1.5-2 h;
S60: and (3) cooling: firstly, cooling a casting mold to 500-600 ℃, and keeping the temperature constant for 1-1.5 h; then cooling the casting mould to room temperature;
s70: demolding: and (4) demolding the cast planet carrier, and machining the planet carrier to form a finished planet carrier product.
2. The method for casting the planet carrier of claim 1, wherein in the step S30, in the smelting of the molten steel, after the temperature is reached, the spectral elements of the molten steel are analyzed and adjusted to meet the requirements.
3. The method for casting the planet carrier according to claim 1, wherein the temperature of the molten steel is 1650 ℃ and the holding time is 25min in step S30.
4. The method for casting the planet carrier according to claim 1, wherein the casting mold is heated to 1450 ℃ and kept warm for 40min in step S40.
5. The casting method of the planet carrier according to claim 1, wherein in step S50, the pressing force is 0.022MPa, and the pressing time is 1.7 h.
6. The method for casting the planet carrier of claim 1, wherein in step S60, the casting mold is cooled to 550 ℃ and kept at a constant temperature for 1.2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347398.9A CN111842807A (en) | 2019-04-28 | 2019-04-28 | Casting method of planet carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347398.9A CN111842807A (en) | 2019-04-28 | 2019-04-28 | Casting method of planet carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111842807A true CN111842807A (en) | 2020-10-30 |
Family
ID=72964884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910347398.9A Pending CN111842807A (en) | 2019-04-28 | 2019-04-28 | Casting method of planet carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111842807A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658213A (en) * | 2020-12-03 | 2021-04-16 | 天津众达精密机械有限公司 | Casting method of metal part |
-
2019
- 2019-04-28 CN CN201910347398.9A patent/CN111842807A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658213A (en) * | 2020-12-03 | 2021-04-16 | 天津众达精密机械有限公司 | Casting method of metal part |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201030 |
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| WD01 | Invention patent application deemed withdrawn after publication |