Cone-bottom silo or hopper-bottom storage bins refer to a cylindrical drum with a rolled metal cone at the bottom. Cone-bottom silos are used when complete drainage is needed. The configuration of the hopper silo depends on the type of material that will be stored. Generally when pellet products are being stored, the cone design requires a . . . → Read More: What is the Best Angle Design when Rolling a Metal Cone for the Bottom of a Silo?
What happens when over 47,000 lbs. of Type 304 stainless steel rolled angle segments are required rather quickly and the producing mills cannot provide these parts for more than 20 weeks? Simple: take 20ft plate x 1in. thick, saw it into 5- and 6-inch wide bars, bevel a long edge, then provide full penetration weld, thereby . . . → Read More: Rolling Stainless Steel Angles Built Up by Welding Two Bars Together
Fans are installed to provide exhaust, intake or circulation. A common application for angle rings and other curved steel sections is in fan housings. The metal rings serve as structural supports as well as mating flanges to connect to round ductwork.
An Axial Fan with Metal Rings Serving as Its Housing and Connecting Flange
Metal . . . → Read More: Steel Angle Rings in Fan Housings
Rolled angle rings are commonly used as angle flanges to connect cylinders or pipe. Welded to the pipe or cylinder, the mating angle rings are commonly bolted together through holes put in the horizontal leg of a leg-out angle ring. (Leg-out angle rings look something like a old timey straw hat without the top. The brim . . . → Read More: Bolt Holes in Rolled Angle Rings
When specifying how to roll an unequal-leg angle ring or segment, indicate whether the angle is rolled leg-in or leg-out and which leg is rolled leg-in or leg-out. For example, a 5 x 3 angle could be rolled 5 inch leg-in, 5 inch leg-out, 3 inch leg-in or 3 inch leg-out. If the only . . . → Read More: How to Specify Unequal-Leg Angle Rings or Segments
Most rolled angle rings (also called angle flanges, companion angle rings, standard angle rings or blow pipe rings) are rolled leg out (i.e. they look like an old-timey, straw hat without the top) and are made from equal-leg angles (e.g. 1/2 x 1/2 x 3/8in).
Leg-out angle ring (left). Leg-in angle ring (right).
But special . . . → Read More: Angle Rings with Unequal Legs Rolled Off-Axis
An interesting request involving rolled angle rings came our way recently. Occasionally for OEM and other customers, parts are needed where it makes sense to have additional work completed outside of bending and rolling before it is received by the customer. Some advantages could include freight savings, reduction in lead time, and reducing paperwork/workload.
Recently an OEM . . . → Read More: Powder Coating Carbon Steel Rolled Angle Rings
One of the most common applications of angle bending is to form complete rings which are called rolled angle rings, angle flanges, or companion angle rings. Such rings are made of angles as small as ½ x ½ x 1/8 and as large as 8 x 8 x 1. These rings are used as flanges to . . . → Read More: Rolled Angle Rings: Standard vs. Blowpipe
Bending aluminum shapes into rings can be challenging. Fabricators know that aluminum work-hardens and often cracks during the forming process. Nevertheless, the benefits of using the light-weight material with its strong strength-to-weight ratio appeal to design engineers including those designing antennas.
Years ago when satellite TV reception required a dish 4 feet in diameter, the “petals” radiating . . . → Read More: Bending Aluminum for Antennas
As anyone who has tried to bend a structural angle has experienced, it is difficult to roll the member perfectly square. Angle bending causes the metal section to twist because the easiest way for it to bend (the weakest section modulus and moment of inertia) is either apex-out or apex-in and not leg-out or leg-in.
Consider what is . . . → Read More: Angle Bending: Angle Iron Behaves Badly When It Is Curved