The Bradbury Group News

FAQ: How is End Flare controlled in Roll Formed Profiles?

Posted by Matt Werner on Jun 18, 2020 9:21:49 AM

End flare can be inherent in roll formed parts, especially when produced on a precut roll forming line as opposed to a post cut line which forms the panel first and then shears it to length.  The amount of flare depends on the tooling design, the use of anti-flare fixtures, material type and strength, profile or a combination of these factors.  Excessive end flare in roll formed shapes can cause issues when installing and end lapping panels. Purlins used in rigid frame building structures are heavy gauge deep sections which can have more end flare.  When forming a purlin, it will naturally flare in on the leading edge and out on the trailing edge. In other words, the leg angles on the leading edge are typically over 90 degrees, while the trailing edge leg angles are under 90 degrees.  The returns lips can also have flare making it difficult when face to face welding cee sections.  Just a few degrees of end flare on an eave strut can cause a high spot in the roof panel that is fastened to this section.  

To minimize and control flare in purlins, Bradbury incorporates an anti flare fixture into the straightener at the end of the machine.  Both the drive and operator side have a three-roll configuration to independently control the flare on either side of the part.  The position of the center roll must satisfy both the leading and trailing flare. This can be a balancing act, due to a single adjustment affecting both. With that said, operators will typically find that middle ground on the center roll adjustment that adequately reduces the flare on the leading and trailing ends to within tolerance.

Servo driven auto anti flare fixtures are different to stationary anti flares on the straightener fixture.  

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Topics: Metal Building Roll Forming, Product Spotlight, Metal Roofing, Steel Framing, FAQ

Bradbury AM400™ Produces Superior Steel Framing Parts for MRI

Posted by Rachel Grilliot on Jan 29, 2018 8:30:00 AM

 MRI Steel Framing, located in Gary, IN, recently added a Bradbury AM400 structural roll forming line to its line-up of manufacturing equipment. The Bradbury AM400 is engineered to efficiently manufacture the highest quality commercial structural metal framing products in the building industry. 

Able to produce roll formed steel framing products up to 10-gauge thickness, and capable of producing a 16” web, 4” flange stud, and a 4” leg track, the AM400 gives MRI a competitive advantage in the steel framing market.  “This machine has provided optimal performance since the initial deployment. We hit the ground running; producing superior parts with minimal scrap. I am confident we will continue to grow our business in the industry with the reliability and durability of this Bradbury line,” stated Mark Krzyszton, Vice-President, Operations & General Manager for MRI Steel Framing.

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Topics: Company News, Customer Testimonials, Product Announcements, Steel Framing

Product Spotlight: Bradbury Light Structural Viper Line

Posted by Taylor Graber on Sep 26, 2016 8:45:00 AM

The Bradbury Light Structural Steel Framing line is designed to produce 14 ga. - 20 ga. stud and track products at speeds up to 500 FPM.  The typical web width range is 1.625” – 8” but can be customized to meet a customer’s specific needs. The typical line includes a 6,500 lb. capacity uncoiler, LS Viper™ or DW Viper® punch unit, our STR™ rollformer and closed loop post-cut shear.

 

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Topics: Recent Videos, Product Spotlight, Steel Framing