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). Have a need for consistent, accurate, and repeatable bent steel parts, hit us up today! We are standing by ready to assist!
We recently completed a project consisting of 400 pieces of bent tube steel 4″ X 4″ X .375″ WALL A500 GR B for a customer on the east coast. All parts were cut and trimmed by Albina to a 1/16” tolerance. These bent parts will be used on equipment for the timber industry.
We recently completed a job bending some rock guard frames out of 1″ SCH80 6063-T52 Aluminum. Albina cut and bent the aluminum to net 500 pieces. All of the pieces were bent on a 5″ center line radius. It was quite an amazing site to see them all packaged and ready for shipment in our yard!
We recently bent 215 pieces of .79” OD X .083” WALL C-276 for a chemical processing application. C-276 alloy is one of the most corrosion resistant alloys currently available. This project is a perfect example of how consistent, accurate and reliable we are with jobs that require extreme precision!
Albina is not only known for bending large structural members, but we service a wide range of manufacturing companies. We have consistently bent hydraulic lines for a local manufacturing company in Portland Oregon. We will bend 100’s of parts at a time on our CNC equipment. A recent production run was bent out of ½” OD X .049″ WALL T316 S/S material. This customer required some very specific radii. We did not have all of the tooling to match the exact needs. So to service our customer and meet their requirements, Albina purchased tooling to meet every radii our customer required!
We bend all sizes of angle that the mill produces, up to 8” x 8” x 1¼”. We can bend all types of angle as well; including aluminum, stainless and carbon steel. Carbon angle (mill produced) is classified as ASTM A36 resulting in a yield point (PSI) of 36,000 minimum. We bend all stock lengths as well as non-stock lengths. Stock lengths range from 20 to 40 feet. Angle is produced with equal legs and unequal legs. Unequal legs would measure differently on the horizontal leg versus the vertical leg. We have the ability to bend angle with the leg in, leg out, heel in, heel out and heel up. We also have the ability to bend bulb flat. Bulb flat is similar to angle with one of the legs cut down to a very short “stub”. We can bend bulb flat with the stem out and the stem in. We can bend all mill sizes produced up to 430 mm x 20 mm (16.93” wide x .787” thick). Bent angle can be used for many different applications. The most common application would be angle flanges which are full circles that are used to join sections of pipe together. Bent angle is also used for canopies, roof trusses and tunnel shoring applications.
Angle Leg Out
Angle Heel Up
We aren’t afraid of a little adventure when it comes to our business or our family life! We recently took a family vacation to Central Oregon and went hiking and cliff jumping at Steelhead Falls! Our kids were eager to jump and even more eager to see us jump! I started with the lower rocks and worked my way up to the bigger ones. I couldn’t let my son down! Jaime started on the lower rocks, and while she never made it up to the high ones, she found the courage to jump as our teenage daughter implored her by saying “Mom, I will be so disappointed in you if you don’t jump.” That was all it took and off she went! See our videos on YouTube.
Brian is at https://www.youtube.com/watch?v=0x3pRl7Y9kM
Jaime is at https://www.youtube.com/watch?v=6nwjR6TsDEI
At times, we are not afraid to jump into something if the experience and adventure of it is worth it in the long run. I think that my grandpa had that same philosophy when he was hired at Albina 79 years ago. We hope to keep his spirit, as well as my father’s spirit, alive in our future endeavors. We encourage and challenge you to try something new. If you haven’t used us in awhile, or if you have never used us, please consider jumping in and giving us a chance to show you what we can do. We are up to the challenge!
We recently bent 6″ SCH10 A53A ERW rolled to a 4’ 0” radius. We were instructed to bend the material in 180° sections and the customer was then going to make them into full circles. It is our understanding that these rings will be hung from the ceiling, painted and wrapped in ribbon for a Hulu convention.