'Alpha Rods' and 'Spiroheat Elements' are available in different Configurations for connections from two ends or from one end.
The Alpha Rod Element is a resistance type silicon carbide element. The elements are thick walled tubes. They have a central heating section referred to as a hot zone and two terminal sections called cold ends. The cold ends are impregnated with silicon metal to lower their resistance, and allowing them to operate at a lower temperature.
The extremities of the elements are metalized with aluminium to provide a low resistance contact surface to which the electrical connections are made with braided aluminium straps. Elements are described by giving the overall length, the heating section length, the diameter and resistance.
The Alpha Rod Elements can be operated at furnace control temperatures up to 1550oC in an air atmosphere, or inert atmospheres of argon or helium. In reducing atmosphere the maximum recommended operating temperature is 1350oC..
Since these skills are required for virtually everything that is made, mechanical engineering is perhaps the broadest and most diverse of engineering disciplines