Due to the development of new technology and aluminum formwork, especially for the design of injection molds, aluminum molds are increasingly used in blow molding, R.I.M. mold, rubber mold, structural foam mold and R.T.M. mold and other fields. Although it may not be suitable for all applications, but in fact, its use becomes more and more common. Everyone wants to extend the life of the mold, such as the use of traditional tool steel molds, the surface of hard chromium or nickel metal plating, or the use of more specialized engineering coatings, this can prevent its surface wear or Corrosion, to promote its better stripping. Since then, in order to seek the same goal, began to use aluminum molds, and found a practical solution.
In order to be able to mold to produce better decorative parts, in addition to extend the service life of the mold, the manufacturer also hopes that the surface of aluminum mold to maintain a certain degree of gloss, it is recommended to use non-plating nickel coating process, because This method helps to extend the life of the mold surface finish, making it relatively easy to produce decorative parts.
As the texture of aluminum is softer, if you do not use the surface coating, it is easy to wear plastic, to speed up its damage, thus changing the gloss of the injection molding. The non-electroless nickel coating increases the die surface by 50RC to protect and extend the gloss and structure of the mold surface. The non-electroless nickel coating can achieve better surface finish quality than the aluminum itself, but it must be noted that some surface treatment is required before the mold can be plated. For example, in order to achieve a level of quality at the lens level, it is recommended that the surface of the aluminum mold be machined to the SPIA-3 finish level before applying the 0.0003 to 0.0005 high phosphorus non-electroless nickel coating before further polishing , To achieve the diamond grade quality finish level.
