In addition to a good cleaning of the surface, a good etching of the material is particularly important when powder coating aluminium. In addition to removing oxide residues and other surface residues that are not removed during cleaning, acid etching with Alfideox enables the surface to be roughened. This in ...
As in all chemical pretreatment steps in the anodisation of aluminium, mistakes can also be made in the desmutting process. The following are two examples of errors that can occur. Raw material, initial state Material after desmutting This material was cleaned, briefly alkaline etched and then pretreated in the desmutting ...
Desmutting is used in chemical pretreatment after an alkaline etching process or a polishing process. Due to the removing effect ("etching") of these process steps, a more or less strong mix of different alloy components remains on the surface, depending on the material alloy. This is often visible as a ...
The desmutting of etched or chemically polished aluminium surfaces is important to remove remaining tarnish and oxide layers before the anodisation process. This avoids possible staining or color changes of the anodised product. Often, the normal desmutting resources such as nitric acid, sulfuric acid or spent anodising bath solution are ...
As in previous years, Alufinish Andernach will again sponsor the emergency telephone in Andernach in 2022. In cooperation with the Björn Steiger Foundation and as a charitable service, the company Alufinish GmbH & Co.KG is once again sponsoring the emergency telephone in Andernach. The Björn Steiger Foundation is a non-profit ...
In the anodising process, one step in especially takes a lot of time: hot sealing. But this no longer has to be the case. With the FastsealAL process from Alufinish, you can save a lot of time in the anodising process. Nowadays 2 min./µm are already possible by using suitable ...
When aluminium reacts with its environment, this often causes pre-corrosion. Different, mostly barely visible changes on the surface of the aluminium are the result. But what are the effects of pre-corrosion? If pre-corrosion occurs on the material, this often leads to unsaleable goods. This is because the pre-corrosion on the ...
The Tin – ColorAL process is based on tin (II) salts and is known for the variety of colours produced from C31 (champagne colours) to C35 (black). The tin – ColorAL process is based – as the name suggests – on tin(II) salts and is applied by means of alternating ...
For Alufinish, digital microscopes are an important tool in our daily work. With our new digital microscope we have many new possibilities to support our customers in the evaluation of error patterns. In the latest video we show you the advantages of the new digital microscope and which error patterns ...
The ENVIROX NR system (products Alficoat 748 and Alficoat 748/3) was already developed at the end of the 90s, then tested and approved for applications on aluminium surfaces by renowned quality communities (Qualicoat, GSB International). It was even subjected to the 10-year outdoor weathering test specified by GSB International in Hoek ...