The tube and pipe fabrication technology area covers sawing (band, circular, and friction) and other cutting processes, such as abrasive, flame, laser, oxyfuel, plasma, and waterjet. It also discusses forming processes, including bending and end forming. Finally, it includes a handful of miscellaneous processes, such as trimming, beveling, finning, grooving, threading, and spinning.
January 13, 2009
Ercolina®'s Mega Bender® 030 rotary draw bender with internal mandrel produces bends in tubes and hollow profiles. The system incorporates five individual tooling components to support the...
January 1, 2009
Continuous improvement and statistical process control are useful,time-tested techniques—they have been used since the 1950s—buttheir use must be tailored to specific applications. For example, atypical manufacturing metric is parts per minute, but many rollformers should measure feet per minute. This and other tips can helproll formers accurately evaluate their productivity and measure theimpact of process improvements.
December 2, 2008
Many seamless tube producers in North America use cross-roll piercing mills built in the 1950s that were based on designs from the1930s. While it would be advantageous to replace such aged equipment, that isn't always necessary. A minor equipment upgrade can do wonders. Improving the bar steadiers—the devices that hold the mandrel the steady as the pipe exits the mill—can greatly improve the mill's output and reduce the pipe's wall thickness variation.
November 25, 2008
For many bending applications, it is common practice to determine the necessary length of tube, run a few samples, make some minor adjustments, and then start production runs. The problem is that the initial evaluation may have been based on safe, by-the-book estimates and calculations. Re-evaluating a bending project might yield substantial material savings.
November 25, 2008
Bending serpentine profiles—successive 180-degree bends, which typically are used in refrigeration systems—can be a challenge. By their nature, they tend to cause interference among the various bend dies, and they can be difficult to handle. Good planning in selecting a bender, planning the process, and paying close attention to infeed and outfeed options, can help make a serpentine project successful.
November 11, 2008
Scotchman® Industries' CPO 350 circular cold saw features a double-clamping and self-centering vise that helps provide burr-free parts. The machine has 135-degree mitering ability and a...
November 11, 2008
The Indalex Inc. aluminum extrusion facility at City of Industry, Calif., has been awarded a Certificate of Recognition and been named a Good Corporate Citizen by the Sanitation Districts of Los...
October 14, 2008
The Wagner Companies, a manufacturer of handrail fittings and metal products in Milwaukee, has announced that Jackie Heinrichs has returned to the company as manager of production control. In this...
October 1, 2008
Midwest Sandright, a division of Midwest Group One, offers Rand-Bright™ cylindrical deburring and polishing machines and systems. Applications include steering racks, automotive valves,...
September 30, 2008
The best material for a tube bending tool is the most cost-effective in terms of the ratio of tool life to tool cost. A cost-effective tool tends to wear out rather than break at the end of its service life. This article addresses choosing the optimal material for a rotary die tube bending machine's full toolkit.
September 16, 2008
Sculptor and fabricator Brett Richards of BR Sculpture, Chicago, got a contract to make a frame for an oval mirror—a length of square tubing bent to a perfect ellipse. Not knowing too much about the vagaries of bending tube, he figured he'd spend a few thousand dollars on a simple bender. After searching for months, he happened to see an elliptical shape made from square tubing in a vendor's booth at FABTECH.