Your Bending Experts
Reduce Risk & Control Cost
It's Recyclable & Looks Great
Since 1939
We Value Our Relationships
AESS Bending
Facilites, Equipment, R & D
Accurate & Repeatable Parts
Difficult & Unusual Parts
Big & Small
We Communicate
Lowest Distortion
Custom Fabrication!
Rotary draw bending is a cold bending method where the member is clamped to a rotating bend die and drawn around the bend die. The tailing tangent is held against the bend die by a pressure die, and the bend die rotates until the desired geometry is formed. A mandrel is often placed inside the member to restrain cross-sectional distortion during the bending process. Bends can also be formed with special draw-bending equipment where deformations are controlled by tensioning along the member axis. Rotary draw bending is commonly used to form small radius bends in smaller-size round, square and rectangular HSS members. Specific tooling is required for each member size, shape and bend radius; therefore, this method is best suited for projects requiring many identical bends. This bending method is primarily used in the machine and parts industry (Weisenberger, 2016) and for piping (Riviezzi,1984). The maximum degree of bend is 180°, but the minimum bend radii of round HSS is approximately 50% smaller than that of other cold-bending methods (Riviezzi, 1984).
I was talking to a potential customer yesterday about fabrication of some complicated work, most of which included rolling. When asked about maintaining tolerances, I could say without hesitation that Albina would provide a product that exceeded expectations. It's good to know you have a partner that can carry their weight when bidding tough projects.
Drew P.