• Pure aluminum ＝ good corrosion resistance (good rust resistance）
• Other aluminum alloys ＝ poor corrosion resistance (bad rust resistance）

  Wrought materials, die cast parts, etc.

The introduction of additional elements during die casting significantly lowers corrosion resistance,necessitating surface treatment.

While there are other methods of enhancing corrosion resistance including surface treatments such as conversion treatment, plating, and anodizing treatment, the inevitable banning of hexavalent chromium due to environmental concerns leaves very few tried and tested surface treatments offering sufficient corrosion resistance.

• ■To realize stable film generation on materials like aluminum difficult to coat with anodizing
• ■To provide sufficient corrosion resistance

We developed the MD Process (Miyaki Die Cast Process).

• Standard Anodizing

  The anodizing film of standard die cast parts can’t form good cells. The presence of numerous melted sections prevents effective sealing, so there is no corrosion resistance.

  

• MD Process

  Production of an even film as with wrought materials provides sufficient corrosion resistance for die cast parts.