Die casting material properties refer to the properties exhibited by metal materials during the die-casting process, such as melting point, fluidity,etc.
These characteristics of the die casting used metal die casting materials determines greatly the quality and performance of the end piece.
This report is about the essential characteristics of the materials used in die casting and how they relate to the die casting and what is produce at the end.
Die Casting Material Properties
- Melting Point
- Flowability
- Thermal Conductivity
- Strength and Hardness
- Shrinkage
- Ductility
Melting Point
Metals utilized within a die casting should possess a relatively low melting point. This ensures that the metal can both be melted and solidified within the die at a faster rate. This increases the overall cycle time efficiency within the casting process.
Flowability
Materials used should exhibit a favorable flowability. This phenomenon is critical in mold cavity filling and even more so in intricate and thin walled geometries. Enhanced flowability is the key in bubble and void elimination and promotes more uniform and defect-free castings.
Thermal Conductivity
The rate at which the molten metal cools within the die is fundamentally influenced thermal conductivity. This is critical as it determines the microstructure and mechanical properties of the casting.
Strength and Hardness
The wear resistance and mechanical load one is capable of applying to a die casting is dictate by the strength and hardness of the die material use in the casting process. This is particularly important in components subjecte to mechanical load.
Shrinkage
The dimensional accuracy and surface finish of a die casting is largely influenced by the solidification shrinkage of the material. The fewer the deformations one experiences, the more shrinkage one is said to possess. Materials are always desire that improve deformation resistance and dimensional stability.
Ductility
Ductility is require in the casting in order for it to survive the stresses of demolding from the mold without breaking and cracking. More forgiving and ductile materials have much less defects.
Impact of Material Properties on the Die-Casting Process
- Melt Temperature:
- With zinc alloys (380-420°C), there is 30% less energy used than with magnesium alloys (620-680°C).
- Mold Temperature:
- 150-200°C is the temperature range for aluminum alloys to avoid cold shuts while magnesium alloys are in 200-300°C to minimize oxidation.
- Injection Speed:
- Magnesium alloys is set at > 45 m/s (high fluidity) while aluminum alloy is set at 30-40 m/s.
- Shrinkage Compensation:
- Solid aluminum alloys deflect 1.2% under gravity therefore the mold design must initially be enlarged.
Haichen Machinery: Expert in Improving Die-casting Material Performance
- Advanced Control System and Quality Assurance
- Die casting material properties and solutions
- Market Competition and Customer Support
Advanced Control System and Quality Assurance
Haichen die casting machines apply modern systems and methods of machine-controlled die casting to achieve controlled casting injection pressure and speed, thus, enhancing casting quality and consistency.
Die casting material properties and solutions
We understand that die-casting materials’ properties such as fluidity, strength, and melting point influence the quality of die castings. Therefore, we strive to deliver die casting solutions tailored to different material properties.
Market Competition and Customer Support
Performance optimization of die casting machines enables our customers to maintain a competitive position, particularly in the die casting industry of aluminum alloys, zinc alloys, and magnesium alloys.
Common die casting materials include aluminum alloys, zinc alloys, magnesium alloys, and copper alloys. Each of these materials has unique die casting properties that make them applicable for varying purposes.
Optimizing the die casting process is vital for enhancing quality and reducing production costs. Understanding material properties is vital for die casting process optimization.
