Surface treatment of die castings

Depending on the purpose and intended use, we subject the finished components made of die-cast aluminium or magnesium to a surface treatment following the after-treatment. Both functional and decorative requirements for the respective component are of central importance here.

Depending on the purpose and intended use, we subject the finished components made of die-cast aluminium or magnesium to a subsequent surface treatment following the post-treatment. Both functional and decorative requirements for the respective component are considered here. Functional requirements include corrosion resistance, surface hardness, wear resistance, sliding properties and thermal and electrical conductivity. Certain external characteristics such as colour, roughness, gloss and adhesion must also be provided for so that the component can optimally fulfil its final purpose.

Powder coating

Powder coating is a colour coating method in which we apply the finest solid particles based on polyester and epoxy resins to an electrically conductive workpiece. The particles adhere to the electrostatically charged surface and are then fused to a smooth film in a kiln at up to 220°C. Powder coatings contain neither solvents nor heavy metals and offer an incomparable range of colours and shades. They offer a variety of ways to decorate the workpiece and protect it from corrosion at the same time.

Trovalising / Vibratory grinding

Rounding, grinding or smoothing are processes with which we can machine the surface of cast blanks in light of their later use during vibratory grinding or trovalizing. To do this, blanks are placed in a vibrating container with special abrasives. The movement of the abrasive particles in the container causes material to be removed, which is necessary to produce the desired surface quality. The result can be varied selectively depending on the abrasive used. Vibratory grinding or trovalizing is especially suitable for small workpieces.

Sandblasting

Using sandblasting, we prepare the surface for final treatment after the deburring of our die-cast blanks. Blasting media is directed at high speeds against the surface of the workpiece – this treatment achieves maximum homogeneity, optimum adhesion and surface texture. As a result, the aluminium die-cast part is optimally prepared for final surface treatment, for example with powder coating, which serves for both decoration and corrosion protection.

Post-processing of die castings

Our integrated concept in the production of die-cast components pays off for our customers in several respects. The sensible chaining of downstream production steps guarantees maximum process reliability and high transparency in process control. By offering the entire process as a system provider from a single source, we achieve the shortest possible turnaround times. This reduces costs and unnecessary losses.

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Surface treatment of die castings

Powder coating

Trovalising / Vibratory grinding

Sandblasting

Post-processing of die castings

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