In current years, an attractive alternative to steel has come is form of the use of aluminum welding.
It is being used in manufacturing more and more prevalently for the reason that it’s light weight and offers other advantages attributes. As matter of fact, it is said that experts are expecting the aluminum welding market to grow at a rate of 5.5 percent annually. These assumptions are primarily made from the fact that the automotive industry will continue to increase its use of aluminum.
That said people who have experienced in the steel welding would find aluminum welding to be a very different. This is mainly because the normal welding practices of steel don’t always apply to aluminum. For example, you can have burn through and warpage problems if the welder does not take care during aluminum’s high thermal conductivity and low melting point.
To understand aluminum welding, you may want to read up on your facts on aluminum metallurgy and it’s basic. Consider educating yourself with the different welding procedures and the parameters that would reproduce the best quality weld. Also, try and keep yourself up-to-date with all the new technology breakthroughs that make aluminum welding better and easier.
Aluminum can be alloyed with a several elements, both primary and secondary. As it alloys it provides enhanced strength, corrosion resistance, and general weld ability. A good way to understand aluminum welding is to understand the various alloying elements of aluminum and how their individual effect on aluminum.
Some of the primary elements that alloy with aluminum are copper, silicon, manganese, magnesium, and zinc. It is important to note that these alloys fall into two classes: heat-treatable or non heat-treatable.
Let’s discuss these alloys a little in detail.
Alloy that can be heated after welding to regain strength lost during the welding process are preferred as heat-treatable alloys. Basically, here you try to produce a supersaturated solution via heating an alloy at a high temperature, putting the alloying elements into solid solution and then cooling it at a certain required rate. This is followed with a process that maintains the alloy at very low temperature for a chosen time duration, which is long enough to permit a controlled amount of precipitation of the alloying elements.
In case of the non heat-treatable alloys, it is possible to increase strength through cold working or strain hardening. To do this, a mechanical deformation must occur in the metal structure, resulting in increased resistance to strain, producing higher strength and lower ductility.
Much aluminum welding have a very long and successful history of use of Constant Current power sources for the gas metal arc welding of aluminum. To aid in the release of a high-energy axial spray transfer mode for aluminum the “drooper” is use as an output. This allows it to respond uniformly and constantly with the right welding current in spite of changes in arc length. Constant current gives a result that is consistent penetration throughout the length of a given weld.