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.
March 27, 2003 | By Chuck Summerhill
You can successfully roll-form a profile more than one way. In fact, many roll form designers take different approaches to design and development. Also, because the roll forming process has a seeming limitless capacity to produce complex profiles with just as many variables, many roll form designs are one-of-a-kind; therefore, theory can go only so far.
March 13, 2003 | By Mike Roth
In the power piping industry, turnaround time on a boiler pipe project typically is from 20 to 36 weeks. But J.F. Ahern Co. (JFA), Fond du Lac, Wis., a company ranked as one of the Midwest's top 10 mechanical contractors according to the May 2002 Contractor magazine, isn't typical. Neither were the results JFA achieved when it switched to induction technology for pipe preheating.
March 13, 2003 | By Jordon Jablons
Precision abrasive wheel cutting is a small but important niche in the abrasive cutting field. It can be used to cut many types of parts, including metal rods, tubes, extruded shapes, and even wire. It is most useful in operations characterized by small parts, hard-to-cut materials, and tight tolerances.
February 27, 2003 | By Dave Petrack
The level of technology used these days in the tube and pipe fabrication industry varies quite a bit in terms of age. Some of it is a bit antiquated, to put it kindly. Many tube fabrication shops use equipment that is more than 50 years old.
February 27, 2003 | By Kent Horn
In the 1980s, when CNC machinery evolved, tube fabricators made the transition from manually forming each part to allowing a machine to form the parts unassisted. Now in the age of Windows®-based computers and brushless electric servo drives, these machines can seem like relics. But don't take them to the scrap heap just yet.
January 16, 2003 | By P.K. Saha
Of all the materials used for high-temperature steam piping, X20 (12 percent chromium, 1 percent molybdenum, 1/4 percent vanadium) and P91 (9 percent chromium, 1 percent molybdenum, 1/4 percent vanadium) stand out because of their very high creep rupture properties, even at elevated temperatures.
December 12, 2002 | By Steve Purnell
Orbital welding's advantages in productivity, quality, consistency, tracability, and skill level required are the driving factors behind its growth. Advances such as oxygen analyzers that prevent the weld cycle from starting until oxygen is properly purged, combined with its ability to generate a written report of each weld, form the basis for orbital welding's improved quality and tracability.
November 21, 2002 | By Jerry Fireman
Using orbital welding equipment led to productivity gains in one of the nation's first fusion-welded underground pipelines.
November 21, 2002 | By Brad Frank
Bending tube and pipe has become increasingly popular throughout the metal fabrication industry. Bending inherently saves money over other fabrication methods, such as the cutting and welding of standard fittings or the use of cast elbows. However, fabricators can reduce costs further by following simple procedures while designing or ordering bends.
November 7, 2002 | By Joseph Ivaska Jr.
Changes taking place in tube and pipe producing and fabricating may require you to review your lubrication strategies. One of these changes is the increased use of aluminum, aluminized steel, and stainless steel tubing.
November 7, 2002 | By Eric Lundin
State-of-the-art laser technology for cutting metal tubes includes capabilities for cutoff, beveling, and cutting an infinite variety of shapes such as holes, slots, and notches. In this article, manufacturers of laser cutting equipment discuss the state of advancements such as automated loading and unloading of parts; simplified programming; automatedinspection of finished parts; and lights-out operation.
September 12, 2002 | By Steve Purnell
The GTAW Process Editor's Note: This article is the first part of a two-part series about developments in orbital welding. Part I discusses power supplies, weld heads, and electrodes. Part II, which will appear in the October/November issue, will focus on hardware and accessories that improve...
September 12, 2002 | By Brad Jeffery
Switching from an oil-based lubricant to a water-based gel lubricant helped an exhaust-system components manufacturer, Zeuna Starker, reduce costs and cycle time. After studying several types of lubricants, the company chose a water-based gel that was less prone to spilling onto the floor and did not produce smoke during the welding process. The company reaped benefits in decreased housekeeping and disposal costs, and found that it did not need to wash the lubricant residue from semifinished parts before welding.
August 29, 2002 | By Jack Thornton
If you need to cut production time, you might glean a few tips from a little job shop in Ohio that has made the most of its software.
Coatings for tube and pipe can serve as a primer for subsequent painting or they can provide corrosion protection.