Basically, very little brazing allow is required for the production of a steel to steel connection or a brazing joint. But you have to understand the process and all its fundamentals properly so that it can be applied to braze with a silver-containing filler metal. Only then the process can be cost effective and reliable.
A commonly used brazing alloy is a silver containing one.
Silver brazing is the most commonly used method that takes care of steel to steel connections. This process is termed as silver brazing and the fundamental process makes use of a silver-containing alloy. It might have a melting point well above 840°F (450°C) but it must be below that of the melting point of the metals to be joined, in this case being a steel to steel one.
The process:
The brazing process comprises of base metals that are heated up to a point that is slightly above the flow point or liquid us of the filler metal; only then it melts which is why the filler metal flows down into the parallel joint clearance. This clearance is in between the two base materials such as steel and steel; through capillary attraction, it bonds to the surfaces and an atomic attraction as well as diffusion takes places to further strengthen the joint.
Thus in brazing, you are just concerned with the flow of the alloy between closely fitted steel members. Just as silver brazing alloys work wonders with steel, copper brazing alloys are used on iron for they have high corrosion resistance and electrical as well as thermal copper conductivity.
No wonder polythene suppliers and film manufacturers companies have entered into this business area to come up with ultra high molecular weight (UHMW) polyethylene rods; after all this business is a flourishing one at present.
