Die casting method for light alloy

Abstract

The invention discloses a light alloy die-casting method, which specifically includes the following steps: S1 raw material preparation: place the light alloy in a heating furnace under a vacuum environment and continue heating, the temperature of the heating furnace is 700-750°C until the light alloy slowly Until it melts into molten metal; S2 aluminum powder addition: under vacuum environment, add a certain amount of aluminum powder to the molten metal prepared in S1, and then place the molten metal in a heating furnace to heat, during the heating process and through the graphite rod to continuously Stir mechanically for 1-2 hours; S3 degassing: inert gas is introduced into the molten metal obtained in S2 in a vacuum environment, and the molten metal is continuously affected by ultrasonic waves. The invention adopts ultrasonic wave and gas blowing to act on the molten metal, so that the air bubble exclusion rate in the molten metal can reach more than 95%, avoiding the influence of air bubbles on the toughness of die castings, and using inert gas to pressurize the inside of the mold cavity during injection molding , so that the molten metal can fill the cavity and enhance the flatness of its side.

Description

technical field

[0001] The invention relates to the technical field of light alloy die-casting, in particular to a light alloy die-casting method. Background technique

[0002] Light alloys mainly refer to titanium alloys, magnesium alloys, aluminum alloys and other alloys with a density less than 5 g / cm3, which have the advantages of low density, high strength, good corrosion resistance, and good process performance. At present, more and more products made of alloys are used as materials. The more, and the method used in the production of light alloy products is the die-casting method, which has the advantages of high production efficiency, high dimensional accuracy, low mass production cost, compact structure of die-casting parts, high tensile strength and flexural strength, However, die castings also have their own defects. The die casting speed of ordinary die castings is fast, and the internal heat loss is slow, which increases the internal stress. At the same time, the...

Examples

Embodiment 1

[0020] This embodiment provides a die-casting method for a light alloy, which specifically includes the following steps:

[0021] S1 Raw material preparation: place the light alloy in a heating furnace under a vacuum environment and continue heating. The temperature of the heating furnace is 700°C until the light alloy slowly melts into molten metal;

[0022] S2 Aluminum powder addition: In a vacuum environment, add a certain amount of aluminum powder to the molten metal prepared in S1, then place the molten metal in a heating furnace for heating, and continuously mechanically stir it through graphite rods for 1 hour during the heating process;

[0023] S3 exhaust: inert gas is passed into the molten metal obtained in S2 in a vacuum environment, and the molten metal is continuously affected by ultrasonic waves, and the undissolved bubbles in the molten metal are removed through the joint action of air blowing and ultrasonic vibration;

[0024] S4 Injection molding: inject the ...

Embodiment 2

[0032] This embodiment provides a die-casting method for a light alloy, which specifically includes the following steps:

[0033] S1 Raw material preparation: place the light alloy in a heating furnace under a vacuum environment and continue heating, the temperature of the heating furnace is 710°C, until the light alloy slowly melts into molten metal;

[0034] S2 Aluminum powder addition: In a vacuum environment, add a certain amount of aluminum powder to the molten metal prepared in S1, and then place the molten metal in a heating furnace for heating. During the heating process, mechanically stir continuously through graphite rods for 1.2 hours ;

[0035] S3 exhaust: inert gas is passed into the molten metal obtained in S2 in a vacuum environment, and the molten metal is continuously affected by ultrasonic waves, and the undissolved bubbles in the molten metal are removed through the joint action of air blowing and ultrasonic vibration;

[0036] S4 Injection molding: inject ...

Embodiment 3

[0044] This embodiment provides a die-casting method for a light alloy, which specifically includes the following steps:

[0045] S1 Raw material preparation: place the light alloy in a heating furnace under a vacuum environment and continue heating, the temperature of the heating furnace is 720°C, until the light alloy slowly melts into molten metal;

[0046] S2 Aluminum powder addition: In a vacuum environment, add a certain amount of aluminum powder to the molten metal prepared in S1, and then place the molten metal in a heating furnace for heating. During the heating process, it is continuously mechanically stirred by a graphite rod for 1.5 hours ;

[0047] S3 exhaust: inert gas is passed into the molten metal obtained in S2 in a vacuum environment, and the molten metal is continuously affected by ultrasonic waves, and the undissolved bubbles in the molten metal are removed through the joint action of air blowing and ultrasonic vibration;

[0048]S4 Injection molding: inj...

technical field

[0001] The invention relates to the technical field of light alloy die-casting, in particular to a light alloy die-casting method. Background technique

[0002] Light alloys mainly refer to titanium alloys, magnesium alloys, aluminum alloys and other alloys with a density less than 5 g / cm3, which have the advantages of low density, high strength, good corrosion resistance, and good process performance. At present, more and more products made of alloys are used as materials. The more, and the method used in the production of light alloy products is the die-casting method, which has the advantages of high production efficiency, high dimensional accuracy, low mass production cost, compact structure of die-casting parts, high tensile strength and flexural strength, However, die castings also have their own defects. The die casting speed of ordinary die castings is fast, and the internal heat loss is slow, which increases the internal stress. At the same time, the...

Examples

Embodiment 1

[0020] This embodiment provides a die-casting method for a light alloy, which specifically includes the following steps:

[0021] S1 Raw material preparation: place the light alloy in a heating furnace under a vacuum environment and continue heating. The temperature of the heating furnace is 700°C until the light alloy slowly melts into molten metal;

[0022] S2 Aluminum powder addition: In a vacuum environment, add a certain amount of aluminum powder to the molten metal prepared in S1, then place the molten metal in a heating furnace for heating, and continuously mechanically stir it through graphite rods for 1 hour during the heating process;

[0023] S3 exhaust: inert gas is passed into the molten metal obtained in S2 in a vacuum environment, and the molten metal is continuously affected by ultrasonic waves, and the undissolved bubbles in the molten metal are removed through the joint action of air blowing and ultrasonic vibration;

[0024] S4 Injection molding: inject the ...

Embodiment 2

[0032] This embodiment provides a die-casting method for a light alloy, which specifically includes the following steps:

[0033] S1 Raw material preparation: place the light alloy in a heating furnace under a vacuum environment and continue heating, the temperature of the heating furnace is 710°C, until the light alloy slowly melts into molten metal;

[0034] S2 Aluminum powder addition: In a vacuum environment, add a certain amount of aluminum powder to the molten metal prepared in S1, and then place the molten metal in a heating furnace for heating. During the heating process, mechanically stir continuously through graphite rods for 1.2 hours ;

[0035] S3 exhaust: inert gas is passed into the molten metal obtained in S2 in a vacuum environment, and the molten metal is continuously affected by ultrasonic waves, and the undissolved bubbles in the molten metal are removed through the joint action of air blowing and ultrasonic vibration;

[0036] S4 Injection molding: inject ...

Embodiment 3

[0044] This embodiment provides a die-casting method for a light alloy, which specifically includes the following steps:

[0045] S1 Raw material preparation: place the light alloy in a heating furnace under a vacuum environment and continue heating, the temperature of the heating furnace is 720°C, until the light alloy slowly melts into molten metal;

[0046] S2 Aluminum powder addition: In a vacuum environment, add a certain amount of aluminum powder to the molten metal prepared in S1, and then place the molten metal in a heating furnace for heating. During the heating process, it is continuously mechanically stirred by a graphite rod for 1.5 hours ;

[0047] S3 exhaust: inert gas is passed into the molten metal obtained in S2 in a vacuum environment, and the molten metal is continuously affected by ultrasonic waves, and the undissolved bubbles in the molten metal are removed through the joint action of air blowing and ultrasonic vibration;

[0048]S4 Injection molding: inj...

Images