Connect aluminum profiles

Aluminum and aluminum profiles are often used by DIYers. Therefore, the joining of aluminum profiles is one of the most common works of do-it-yourselfers. How you can concretely connect aluminum profiles and what has to be taken into account, we have summarized for you here in this guide.

The versatile use of aluminum and aluminum profiles

For aluminum and aluminum profiles there are countless application examples in the house, garden and many hobbies:

  • Load-bearing structures and racks (canopies, roof trusses)
  • Aluminum profiles on windows and doors
  • Aluminum profiles as a picture frame
  • Aluminum profiles on stairs and in kitchens
  • various hobbies such as model making, vintage car restoration, motorcycles etc.

Techniques for joining aluminum profiles

Depending on where you use aluminum profiles, different connection techniques are available:

  • the gluing of aluminum profiles
  • the brazing and welding of aluminum
  • the screwing of aluminum profiles

A decisive factor: strength of the connection

First of all, the chosen connection technique depends on how firm this connection must be. Soft soldering of aluminum has less strength than welding or bolting aluminum. The welding of aluminum is not or only very difficult to solve, screwing but in most cases all the easier.

External influences on aluminum joints

Which techniques are suitable for joining aluminum profiles, but also depends on the external influences. Aluminum in rooms is much more protected than outside. For example, washed-out cement on a façade that runs over aluminum profiles can change it significantly. Certain bolted aluminum joints need to be prepared.

Here is enough to look at aluminum wheels. For a long time, these were not mounted on vehicles in winter, as the road salt causes corrosion, which can formally harden the aluminum rims on the metal hubs. Even professional workshops then have to work hard to solve such "connections" again.

The oxide layer during gluing and welding

When bonding and welding aluminum, on the other hand, the oxide layer that forms on aluminum must be considered. As soon as aluminum is exposed to the air and thus to oxygen, the oxidation sets in. On the one hand, adhesives do not stick to the aluminum profile. On the other hand, solder or welding wire and workpiece can not join during soldering or welding because the melting temperature of aluminum alloys is between 580 and 680 degrees Celsius, but for the oxide layer at over 2,000 degrees.

Select connection techniques according to individual requirements

So, what bonding techniques you use to join aluminum profiles depends on many factors. Plan the connection carefully and always consider the special characteristics of this frequently used light metal.

Tips & Tricks

In the house journal you will find appropriate advice and instructions for all joining techniques of aluminum. Just follow the respective links. In addition, we also deal with all other topics related to aluminum - from magnetizing aluminum to high-gloss polishing and chrome plating of aluminum.

Video Board: T-Slotted Aluminum Solutions- Using Joining Plates