Aluminum is softer than steel and is more easily scratch able than steel, however it becomes harder than steel by mixing one or more elements in it to make an alloy. Now a day’s aluminum has wider perspective in different elements due to its better thermal and electrical conductivity, non-magnetizing property, natural corrosion resistance ability, lower melting temperature and weightlessness. Therefore, aluminum repair becomes one of the most important things when it has some deformities or destructions.
Aluminum has various ways to be processed – aluminum soldering, aluminum welding, and aluminum brazing. Aluminum brazing is one of the popular techniques of aluminum repair. It should not be confused with aluminum soldering. Although there are different brazing techniques, aluminum brazing needs higher precision and tight process parameters to carry out the whole process seamlessly. This is because there are closeness in the melting point of brazing filler metal and the base metal. There are some advanced brazing rods using which aluminum repair can be done accurately as they do have melting point less that 500 degrees compared to the aluminum.
One thing that needs to be understood when aluminum brazing is done that cleanliness is very important and extrusion of any kind from oil, scale or heavy oxides needs to be removed. On the other hand, sometimes it becomes difficult to remove these oxides due to the natural ability of aluminum to oxidize on air exposure. However, with the newly developed brazing rods this pitfall is automatically slide away due to the lenient properties of such rods.
The best part about aluminum repair with brazing is all kind of filler metals for brazing process are readily available in the form of wire, plaster, powder, clad sheet and foil. In addition, when you are brazing aluminum with such brazing rods actually the repaired area becomes stronger than the surrounding areas guaranteeing no re-appearance of any cracks or brakes in repaired area. With the use of heat source like propane or mapp gas, you do not need any welding machine or furnace. These brazing rods are so developed that they usually works on all non-ferrous alloys including all the alloys of aluminum.