To develop the blank flat length for a cylinder rolled from sheet or plate is quite simple:
Essentially, you should calculate the centerline arc:
(Outside Diameter – Thickness) x 3.1416 = Length of Plate Required
(Inside Diameter + Thickness) x 3.1416 = Length of Plate Required
Note: Additional plate may be required depending on the material thickness and the machinery . . . → Read More: How to Develop the Blank Flat Length for a Cylinder
Bender/Rollers, those companies that specialize in curving structural steel, steel sheet and steel plate, often supply rolled steel and metal shapes to equipment manufacturers as component parts. These original equipment manufacturers (OEMs) turn to Bender/Rollers precisely because their make-or-buy analysis indicates they should buy these parts.
Given that Bender/Rollers will supply many parts to OEMs, what measures or metrics should . . . → Read More: Rolled Steel Shapes Supplied to Equipment Manufacturers – What Should be Measured?
There are several solutions to the challenges of shipping curved steel sections. The challenges include safe loading of the trucks, ensuring timely delivery, and keeping costs low.
There is a large range of sizes of curved steel: from eight-inch diameter angle flanges to W44 x 290# wide flange beams 100ft long. The former can be shipped by . . . → Read More: Ways to Reduce the Cost of Shipping Curved Steel Sections
Those of us who work with steel should always strive to eliminate waste in our operations. Some call this approach “lean manufacturing” or “just in time manufacturing.” Whatever you call it, it can contribute to your productivity.
Sometimes we don’t pay enough attention to how we receive steel in our plant. We might be focusing too much . . . → Read More: Best Practices in Shipping and Receiving Structural Steel
When designing for the use of rolled steel shapes in any application, architects and engineers must take into consideration the fact that most bending and curving processes require a certain length of material on each end of the curve. This length of un-used, wasted material is required as pickup, in order for the machine to properly . . . → Read More: Pickup/Waste Considerations When Designing with Rolled Steel Shapes
With the increased use of curved steel members in construction and equipment, questions arise as to how to ship large steel loads.
The maximum sizes for non-permitted loads (those where special trucking permits are not required) are as follows: 52′ long (624″); 8′ 6″ wide (102″) and 13′ 6″ high. Curved steel members are often at least . . . → Read More: Shipping Curved Steel Members: Permitted and Non-Permitted Loads
Bending steel sections can involve both curving and cambering.
In the world of structural steel, camber denotes a curve in the vertical plane; sweep denotes a curve in the horizontal plane. Steel members produced in a steel mill have at least some camber and some sweep. The allowed amount of deviation from straight is defined by the . . . → Read More: Curving and Cambering Steel Sections
More and more architects are designing structures that incorporate curved steel sections whether they be angles, bars, beams, channels, tees, pipe or tube. This increased use of curved steel is the result of the combination of the fabricators’ increasing capabilities for curving of steel and the owners’, architects’, and engineers’, desire to create strikingly beautiful and . . . → Read More: Defining “Curved Steel” in Construction
Shipping steel members either straight or curved often requires packaging. With certain original equipment manufacturers (OEMs) special reusable containers are designed to hold a certain number of parts securely. Some are part of a kanban system common to companies using lean manufacturing. The containers can also be used as a counting device: fill it up and you . . . → Read More: Packaging for Shipping Curved Steel Members
Designers, architects, owners, engineers, structural steel fabricators – anyone who is interested in using curved steel shapes in their buildings, equipment or other structures can benefit from entering into a dialogue with companies that specialize in curving steel.
While there are copius manuals and guides for what pipe can be bent successfully on rotary draw benders, there is . . . → Read More: Curving Steel Shapes: The Importance of Record Keeping