June 3, 2009 | By John Hodges
Two technologies improve the quality and decrease the cost of fabricating high-purity systems, such as those used in the food and beverage, dairy, pharmaceutical, and semiconductor industries. These two techniques are mechanically formed T connections and orbital welding. A common question is this: Can orbital welding be used on mechanically formed T connections? The answer is yes, but fabricators need to understand the limitations and restrictions of this combination.
May 28, 2009 | By Mike Bollheimer
Competition is tough and getting tougher. A critical strategy for staying in business is automation. Putting together a flexible, automated system with quick-change capability can help tube fabricators manufacture a variety of parts, both for existing projects and future programs. A few key pieces of equipment and a long-term view of current and future projects can help to justify the expense.
April 1, 2009 | By Chad Rhodes
Although the energy market has seen ups and downs, overall the trend is a growth path. A manufacturer of welded structural and mechanical tube and pipe can get into this market by using its existing mill to manufacture oil country tubular goods (such as line pipe and casing) and adding a finishing floor to its operations. Understanding API requirements is the first step in planning a finishing floor layout.
Bending tube or pipe successfully is a matter of managing a handful of processes and variables and controlling the flow of the metal. The same principles apply to bending profiles, or rolled steel sections (RSS). However, because profiles aren't closed, they are more prone to distortion than tube or pipe. A close look at an RSS bending job provides a step-by-step approach for tackling this sort of project.
March 9, 2009 | By Richard D. Sheffer
"Cut costs, cut costs, cut costs" is a mantra that echoes from engineering cubicles to production floors in manufacturing companies far and wide.
March 9, 2009
Electricity demand grew an average of 15,000 megawatts per year from 1995 to 2006, and this trend will undoubtedly continue. The Energy Information Administration predicts that meeting future demands will require the equivalent of more than 20 new 500-MW power plants per year over the next 20 years or so. A critical component in power plant construction is titanium tubing, which is favored for its high strength and corrosion resistance.
February 10, 2009
Ranch Hand Truck Accessories was established in the area in 1986 to produce truck grille guards, a product that still comprises a majority of the company's sales. A 25 percent increase in production of its grille guards and front bumper replacements led to the need for a faster, more efficient, and more protective way of packaging its products.
January 1, 2009 | By George Winton
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 12, 2008 | By George Winton
Extrusions can be tricky to bend and handle. Paying close attention tobender selection, die design, programming, and material handling can help to ensure efficient and productive bending.
December 4, 2008 | By Steve Lowery
The tube and pipe bending process is full of variables and options, all of which you must understand and manage successfully to make the end product.
December 2, 2008 | By Albert Klimas
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 | By George Winton
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 25, 2008 | By Lonnie McGrew
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.
September 30, 2008 | By William Q. Tingley III
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 | By Eric Lundin
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.