When it comes to quickly, effectively and seamlessly creating joins, brazing has long been seen as a top option. This is true for both joining similar and two different metals, with the use of the capillary action to draw the braze up into the joint a superior process which does not entail high heats which can change metal properties.
Furnace brazing is the process of being able to complete the brazing process on multiple to large batches of parts at the same type. Different types of furnaces and solutions are possible, including the use of controlled atmospheres to prevent any discoloration during the process.
The use of robotic application of the brazing paste is another new technology. This allows precise application of the paste both in amount and location for every part. With faster, more precise application of the paste and the uninformed, controlled furnace brazing process, there is virtually no waste to this joining method.
Prep of Parts
A key factor in the effectiveness of furnace brazing is the full preparation of the parts. This is no different from other brazing methods, but it does require the surface areas to be free from all types of grease, oil or rust, and they should also be completely free of dirt or metal filings.
Important Factors
The limited exposure to heat in the furnace, which is controlled through an automated belt of keeps the parts moving precisely at the right speed, means no distortion of other elements of the part. As cooling is also uniform, there is additional protection in this process as well.
The ability to join different metals, including different thicknesses of metal, and to complete multiple joints on a single part at the same time makes this a fast, effective and efficient joining method.