What is Magnesium Alloy Semi-Solid Die Casting?

Semi-solid die casting is a manufacturing process that leverages the principles of shear-thinning of semi-solid slurry materials, subjecting them to a shear stress field during the filling process to enhance their fillability and achieve impeccable surface quality of the castings.

Key Features of Magnesium Alloy Semi-Solid Die Casting:

1. Lightweight:

Magnesium alloy has a density of 1.83, which is about 2/3 that of aluminum and 1/4 that of iron. It is one of the lightest practical metals, making it ideal for a wide range of lightweight products. Lightweight products save energy and reduce carbon emissions.

2. Excellent Strength:

Despite being denser than plastic materials, magnesium alloys exhibit superior bending elasticity and tensile strength. This enables the production of thin-walled products that are lightweight yet strong.

3. Good Heat Dissipation:

Magnesium alloys have excellent heat conduction properties with a thermal conductivity of 150W/mk, effectively dissipating heat within machines and devices.

4. Electromagnetic Shielding:

Magnesium alloys offer strong electromagnetic interference shielding capabilities, making them suitable for products requiring control of electromagnetic interference within specified ranges.

5. Recyclability:

Magnesium alloys are easy to recycle and can be re-melted to create new materials. The energy required for recycling magnesium alloys is only 4% of that needed to produce new raw materials, increasing the use of recycled materials and promoting environmental sustainability.

6. Vibration Damping:

Magnesium alloys have vibration-damping properties, reducing noise and extending the lifespan of various devices.

7. Dimensional Stability:

Magnesium alloy products maintain their original dimensions over time and with temperature fluctuations.

8. Impact Resistance:

High impact resistance prevents deformation from sudden impacts.

9. Machinability:

Magnesium alloys are easy to machine, resulting in significant time and cost savings during the manufacturing process.

Advantages of Magnesium Alloy Semi-Solid Die Casting:

1. Easy Alloy Replacement:

Using magnesium alloy scraps as raw materials eliminates the need for a melting furnace, making it easy to switch between different magnesium alloy types for casting.

2. Excellent Quality:

High injection speed and pressure result in superior surface quality, allowing for the production of thin-walled, high-precision products.

3. Precise Dimensions and Mechanical Properties:

Magnesium alloy’s lower melting temperature compared to conventional die casting results in improved dimensional accuracy and mechanical properties.

4. Improved Density:

The process ensures that the magnesium alloy introduced into the casting machine remains isolated from the air, leading to a cleaner and safer operational environment compared to traditional die casting.

5. Environmentally Friendly:

Semi-solid die casting eliminates the need for SF6 protective gas, making it an eco-friendly manufacturing process that contributes to the protection of the Earth’s environment.