Roll presses commercial sizes

The most important factor that must be determined in a given apphcation is the pressing force required for the production of acceptable compacts. Roll loadings (i.e., roll separating force divided by roll width) in commercial installatious vary from 4.4 MN/m to more than 440 MN/m (1000 Ib/in to more than 100,000 Ib/in). Roll sizes up to 91 cm (36 in) in diameter by 61 cm (24 in) wide are in use. 

Cold Forming. Titanium and titanium alloys are commonly stretch formed without being heated, although the die is sometimes warmed to 150 °C (300 °F). Simple brake forming of straight sections also can be done at room temperatvire if adequate bend radii are designed into the tool. When formed at room temperature, commercially pure titanium and titanium alloys behave like cold-rolled stainless steel. Shapes that can be successfully press formed in V -hard stainless steel usually can be press formed in commercially pure titanium, althou titanium may require hot sizing to produce severe contours. 

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