Brazing by the Electrical Resistance Heat Treatment Method

The electrical resistance heat treatment method uses electric current to cause heating in the heating elements, which in turn heats the workpiece. This type of heat treatment is commonly used in preheating and annealing welds, although it can also be applied to the surface area of a component to provide localized temperature control. It is a cost effective method of heat treatment, and it can be quickly executed on-site or in the workshop.

Which metal Cannot be heat treated?

The process of brazing by resistance heating involves the passing of a heavy electric current through a copper alloy electrode. The current creates a high degree of heat, which is transferred to the joint to melt and bond the two metals together. The process is fast and safe, as there is no flame and little fume generated. Brazing by this method is typically carried out in a brazing oven, but it can also be performed in a normal welding or heating machine with the appropriate equipment.

Electric resistance heating is 100% energy efficient, converting all of the incoming electricity into usable heat. This makes it a viable option for heating homes and buildings, though the higher cost of electricity and the losses associated with its transmission are still more expensive than other energy sources, such as natural gas or wood.

When applied to a sedimentary rock formation, the electric resistive heating (ERH) technique generates elevated subsurface temperatures that enhance bioremediation and other remedial processes such as hydrolysis and iron reductive dehalogenation. The key to ERH’s effectiveness lies in Ohm’s law, which states that the amount of electric current passing through a given resistance is proportional to its temperature.


Leave a Reply