CN111195719A - Low-pressure casting process for alloy automobile hub - Google Patents
Low-pressure casting process for alloy automobile hub Download PDFInfo
- Publication number
- CN111195719A CN111195719A CN201811374712.4A CN201811374712A CN111195719A CN 111195719 A CN111195719 A CN 111195719A CN 201811374712 A CN201811374712 A CN 201811374712A CN 111195719 A CN111195719 A CN 111195719A
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- alloy
- pressure
- aluminum
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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
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a low-pressure casting process of an alloy automobile hub, which comprises the following steps: a. metal smelting: putting an aluminum magnesium alloy material into a high-temperature smelting furnace to be smelted into an alloy solution, wherein the aluminum magnesium alloy comprises the following components in parts by mass: 6 to 9 percent of magnesium, 0.5 to 1 percent of silicon, 0.2 to 0.5 percent of ferrum, 0.1 to 0.4 percent of copper, 1 to 2 percent of titanium, 0.2 to 0.6 percent of nickel, 0.02 to 0.05 percent of manganese and the balance of aluminum; b. preheating a mould; c. casting and molding; d. and (5) releasing pressure and demoulding. Through the mode, the process is simple and easy to control, the aluminum-magnesium alloy with the self-formula is adopted for low-pressure casting molding, the alloy liquid has good fluidity, and reasonable casting temperature and pressure control are combined, so that the cast automobile hub has good internal quality, good mechanical property and high reasonable rate.
Description
Technical Field
The invention relates to the technical field of casting, in particular to a low-pressure casting process of an alloy automobile hub.
Background
The automobile hub is a cylindrical metal part which is used for supporting a tire by taking an axis as a center in the automobile tire, the automobile hub is an important component of the automobile part, the hub on the market can be divided into a steel hub and an alloy hub according to the material, the steel hub has large mass, large inertial resistance and poor heat dissipation performance, and is easy to rust, the alloy hub has better performance than the steel hub, the alloy hub is generally manufactured by a casting process, but the qualification rate of an alloy automobile outline casting is lower due to the problems of metal liquid fluidity, improper temperature and pressure control in the casting process and the like.
Disclosure of Invention
The invention mainly solves the technical problems that: aiming at the defects of the prior art, the low-pressure casting process of the alloy automobile hub is provided, the process is simple and controllable, and the casting qualification rate is high. In order to solve the technical problems, the invention adopts a technical scheme that: the provided low-pressure casting process for the alloy automobile hub comprises the following steps:
a. metal smelting: putting an aluminum magnesium alloy material into a high-temperature smelting furnace to be smelted into an alloy solution, wherein the aluminum magnesium alloy comprises the following components in parts by mass: 6 to 9 percent of magnesium, 0.5 to 1 percent of silicon, 0.2 to 0.5 percent of ferrum, 0.1 to 0.4 percent of copper, 1 to 2 percent of titanium, 0.2 to 0.6 percent of nickel, 0.02 to 0.05 percent of manganese and the balance of aluminum;
b. preheating a mould: preheating a metal mold to 400-450 ℃, and preserving heat for 1 h;
c. and (3) casting molding: pouring the alloy solution into a die cavity at a certain temperature, controlling the alloy solution to fill the die cavity under the pressure of 0.015-0.02MPa, pressurizing the interior of the die to 0.03-0.05 MPa after the pouring is finished, and then keeping the pressure of 0.05MPa for 3-5 min;
d. pressure relief and demolding: and (4) releasing pressure after the casting is formed, and demolding after the mold is naturally cooled after the pressure is released.
In a preferred embodiment of the invention, in the step a, the high-temperature smelting temperature of the aluminum magnesium alloy material is 650 +/-20 ℃.
In a preferred embodiment of the present invention, in the step c, the casting temperature of the alloy solution is 600 ± 20 ℃.
In a preferred embodiment of the present invention, in the step c, the time for filling the mold cavity with the alloy solution is 12-15 s.
The invention has the beneficial effects that: the invention has simple and easily controlled process, adopts the self-formulated aluminum-magnesium alloy for low-pressure casting molding, has good fluidity of the alloy liquid, and combines reasonable casting temperature and pressure control, so that the cast automobile hub has good internal quality, good mechanical property and high reasonable rate.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
The embodiment of the invention comprises the following steps:
the first embodiment is as follows:
the low-pressure casting process of the alloy automobile hub comprises the following steps:
a. metal smelting: putting an aluminum magnesium alloy material into a high-temperature smelting furnace, and smelting the aluminum magnesium alloy material into an alloy solution at the high temperature of 630 ℃, wherein the aluminum magnesium alloy comprises the following components in parts by mass: 6% of magnesium, 1% of silicon, 0.5% of iron, 0.4% of copper, 1.5% of titanium, 0.5% of nickel, 0.04% of manganese and 90.06% of aluminum;
b. preheating a mould: preheating a metal mold to 400 ℃, and preserving heat for 1 h;
c. and (3) casting molding: pouring the alloy solution into a die cavity at 580 ℃, controlling the alloy solution to fill the die cavity in 12s under the pressure of 0.015MPa, pressurizing the alloy solution into the die to 0.03MPa after the alloy solution is poured, and then keeping the alloy solution for 3min under the pressure of 0.05 MPa;
d. pressure relief and demolding: and (4) releasing pressure after the casting is formed, and demolding after the mold is naturally cooled after the pressure is released.
Example two:
the low-pressure casting process of the alloy automobile hub comprises the following steps:
a. metal smelting: putting an aluminum magnesium alloy material into a high-temperature smelting furnace, and smelting the aluminum magnesium alloy material into an alloy solution at the high temperature of 650 ℃, wherein the aluminum magnesium alloy comprises the following components in parts by mass: 8% of magnesium, 0.8% of silicon, 0.3% of iron, 0.2% of copper, 2% of titanium, 0.6% of nickel, 0.05% of manganese and 88.05% of aluminum;
b. preheating a mould: preheating a metal mold to 420 ℃, and preserving heat for 1 h;
c. and (3) casting molding: pouring the alloy solution into a mold cavity at the temperature of 600 ℃, controlling the alloy solution to be under the pressure of 0.02MPa and filling the mold cavity in 13s, pressurizing the mold to 0.04MPa after the pouring is finished, and then keeping the pressure of 0.05MPa for 4 min;
d. pressure relief and demolding: and (4) releasing pressure after the casting is formed, and demolding after the mold is naturally cooled after the pressure is released.
Example three:
the low-pressure casting process of the alloy automobile hub comprises the following steps:
a. metal smelting: putting an aluminum magnesium alloy material into a high-temperature smelting furnace, and smelting the aluminum magnesium alloy material into an alloy solution at the high temperature of 670 ℃, wherein the aluminum magnesium alloy comprises the following components in percentage by mass: 9% of magnesium, 0.5% of silicon, 0.2% of iron, 0.1% of copper, 1% of titanium, 0.2% of nickel, 0.02% of manganese and 88.98% of aluminum;
b. preheating a mould: preheating a metal mold to 450 ℃, and preserving heat for 1 h;
c. and (3) casting molding: pouring the alloy solution into a mold cavity at the temperature of 620 ℃, controlling the alloy solution to be under the pressure of 0.02MPa and fill the mold cavity within 15s, pressurizing the mold to 0.05MPa after the pouring is finished, and then keeping the pressure of 0.05MPa for 5 min;
d. pressure relief and demolding: and (4) releasing pressure after the casting is formed, and demolding after the mold is naturally cooled after the pressure is released.
The invention discloses a low-pressure casting process of an alloy automobile hub, which has simple and easily-controlled process, adopts self-formulated aluminum-magnesium alloy for low-pressure casting molding, has good fluidity of alloy liquid, and combines reasonable pouring temperature and pressure control, so that the cast automobile hub has good internal quality, good mechanical property and high reasonable rate.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (4)
1. The low-pressure casting process of the alloy automobile hub is characterized by comprising the following steps of:
a. metal smelting: putting an aluminum magnesium alloy material into a high-temperature smelting furnace to be smelted into an alloy solution, wherein the aluminum magnesium alloy comprises the following components in parts by mass: 6 to 9 percent of magnesium, 0.5 to 1 percent of silicon, 0.2 to 0.5 percent of ferrum, 0.1 to 0.4 percent of copper, 1 to 2 percent of titanium, 0.2 to 0.6 percent of nickel, 0.02 to 0.05 percent of manganese and the balance of aluminum;
b. preheating a mould: preheating a metal mold to 400-450 ℃, and preserving heat for 1 h;
c. and (3) casting molding: pouring the alloy solution into a die cavity at a certain temperature, controlling the alloy solution to fill the die cavity under the pressure of 0.015-0.02MPa, pressurizing the interior of the die to 0.03-0.05 MPa after the pouring is finished, and then keeping the pressure of 0.05MPa for 3-5 min;
d. pressure relief and demolding: and (4) releasing pressure after the casting is formed, and demolding after the mold is naturally cooled after the pressure is released.
2. The low-pressure casting process of the alloy automobile hub according to claim 1, wherein in the step a, the high-temperature smelting temperature of the aluminum-magnesium alloy material is 650 +/-20 ℃.
3. The low-pressure casting process of the alloy automobile hub according to claim 1, wherein in the step c, the pouring temperature of the alloy solution is 600 +/-20 ℃.
4. The low-pressure casting process of the alloy automobile hub according to claim 1, wherein in the step c, the time for filling the mold cavity with the alloy solution is 12-15 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374712.4A CN111195719A (en) | 2018-11-19 | 2018-11-19 | Low-pressure casting process for alloy automobile hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811374712.4A CN111195719A (en) | 2018-11-19 | 2018-11-19 | Low-pressure casting process for alloy automobile hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111195719A true CN111195719A (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811374712.4A Pending CN111195719A (en) | 2018-11-19 | 2018-11-19 | Low-pressure casting process for alloy automobile hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111195719A (en) |
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2018
- 2018-11-19 CN CN201811374712.4A patent/CN111195719A/en active Pending
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Application publication date: 20200526 |