Magnesium Die Casting

• Light-weight components in automotive engineering.
• Casings of office machines, notebooks, cell phone handsets, loudspeakers.
• Power tools, etc.

Advantages of magnesium die casting using Buhler machines.
The powerful shot unit allows fast die cavity filling. This high dynamism can be mastered by braking the plunger at the end of the die filling phase. The feared dynamic pressure peak possibly caused by die opening is eliminated. Thus, the conditions for achieving a casting process that is gentle on the die and that can be automated are fulfilled.

Features and advantages of the process.

• The excellent flow characteristics enable components to be cast with even thinner wall sections or higher complexity than with aluminum die casting.
• New applications in the electrical engineering industry thanks to the good thermal conductivity and the electromagnetic screening of the metal.
• Higher strength and better thermal conductivity are achieved than with plastics.
• Magnesium supplies are all but inexhaustible.
• The return scrap can be readily recycled.
• High-purity magnesium alloys are not prone to corrosion.
• Good soundproofing properties.
• Weight reduction compared with aluminum about 30%.

Your benefits.

• Lower fixed costs through the application of the standard machines equipped with magnesium options.
• Faster achievement of accept components thanks to solid training in magnesium by Buhler.
• High capabilities in the field of magnesium thanks to process development in the Buhler Technology Center.

The die casting process.
Following are the main steps in the magnesium die casting process:
The ingots are heated to about 150 °C. This is required because the melting and ladling furnaces must only be charged with dry ingots. Then the ingots are introduced into the ladling furnace and melted. An inert gas atmosphere prevents oxidation of the bath surface. The molten metal is maintained at the prescribed temperature until fed to the shot sleeve.