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:
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.
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.
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.