Guidelines for Reliable Operation of Electric Heating Elements within Superplastic Forming (SPF) Presses

Guidelines for Reliable Operation of Electric Heating Elements within Superplastic Forming (SPF) Presses

Sponsored by Watlow

The superplastic forming (SPF) of standard titanium alpha-beta alloys, such as 6Al-4V, requires press platen/die temperatures in the 900°C to 925°C range. The typical electric heating elements used for SPF press platens are of a special construction, which allows them to reliably operate at sheath temperatures in excess of 1000°C. However, besides the basic materials and construction of these heaters, there are a number of other factors that significantly contribute to the reliable operation.