Welding Rolls

International Syalons manufacture a range of sialon welding rolls for use in electric resistance welding (EWS) of steel pipes and tubes, for example.

In the EWS process, the welding rolls (sometimes also known as squeeze rolls) apply the pressure to the tube while the metal is being heated, often by high-frequency induction heating, and this combination gives a forged weld.

This process puts a number of demands on the welding roll material. It requires high strength, thermal shock resistance, wear resistance and high electrical resistance. Also, the pipe temperature can approach the melting point of the metal and so high temperature stability is required.

Syalon 101 meets all these requirements resulting in a number of key advantages, such as improved pipe quality, reduced roll maintenance, reduced welding failures and reduced cooling requirment as the sialon rolls can operate at high temperatues.