Vertical Continuous Casting (VCC) for Al alloys has offered a technical breakthrough to the targets' makers in terms of : Quality, Reproducibility , Homogeneity within each lot
Cleanliness, Pricing as compared to mold molding technology
On VCC devices, electromagnetic continuous casting process has offered a technical breakthrough for the 8" generation targets : the quality of grain obtained by electromagnetic process gives the best homogeneous fine grain structure for the most homogeneous thickness of the metallization layers on the final product.
After hot rolling, the foil is cold rolled to its final thickness. Depending on the product, the foil may then be degreased, cut and annealed. All these operations take place in PHP Froges. Surface quality is critical in all these operations.
Hot rolling of 4N aluminium is carried out in Pechiney Issoire plant.
Hot rolling of capacitor foil must be done under very high quality standards since many final properties of the foil are involved : surface quality, crystallographic texture,….
Hot rolling parameters of each coil (more than 50) are recorded and stored for quality control.
