Aluminium Finishing

Gardoetch 8300 is a liquid additive for alkaline E6 long-life etching solutions used to prepare aluminium for anodising. It is free of chlorate, nitrate, nitrite and chromate. Its etch baths show low viscosity, low foam, and excellent draining behaviour, allowing a high aluminium content in operation. Best etching effect is achieved at a temperature of 55 – 65 °C and an aluminium content of more than 130 g/l. A Gardoetch 8300 etch bath operating at a high level of dissolved aluminium produces a very matt, fine-grained and uniform surface finish with a low rate of metal removal and consequent lower consumption of the etch solution.

Gardo Seal 1947 is a liquid system for the cold sealing (impregnation) of anodized aluminium according to DIN 17611 and to quality regulations of QUALANOD. The Gardo Seal 1947 process reliably prevents a greenish shade on the anodized surface.

Metall-Etch 291L is a clear, colourless, concentrated liquid acid detergent which has been formulated especially for cleaning and brightening aluminium surfaces prior to painting.

Oxsilan AL 0510 is a Chromium-free process for the treatment of sheets and profiles made from aluminium and its alloys. Oxsilan AL 0510 serves as a pre-treatment prior to painting, mainly for powder painting. Oxsilan AL 0510 meets the specifications of GSB (approval No. 304 c) Qualicoat (approval No. A-068).