Brazing is an old technology and method of joining two similar or two different alloys or metals using a filler that is different than either metal. The result is a very strong joint that is stronger than either of the two metals on the other side of the braze.
The process can be done on a variety of different types of metals including nickel alloys, carbon, and alloy steels as well as stainless steel, aluminum, copper an even titanium. It is the ideal option when a dependable, complete seal is required on the join, but it is a slower process when done manually.
To handle large volume orders, for parts manufacturing, furnace brazing offers a semi-automatic solution. In this process, the parts are assembled, and the brazing filler is put in place, then the parts are placed on a moving belt and pulled into a furnace.
The furnace is set to the required heat and also flushed with a specific atmosphere during the process. This prevents any oxidation or any type of contamination during the brazing process, providing a clean, bright result from the furnace brazing procedure. It is also used to enhance the process based on the specific metals, alloys, and process requirements.
One of the big advantages for OEMs in the use of furnace brazing is the ability to braze multiple joints on a part at the same time. This not only saves on the cost of labor, but it also speeds up the production process, allowing for quick turnaround times. Many of the top companies now use robotic systems to apply the brazing paste, enhancing quality as well as providing precise uniformity with every part produced.
With new types of technology in the form of continuous mesh belt brazing, consistent and high tolerance quality control can be maintained without any slowdown in production.