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 11, 2008
Setting up the tooling for a tube or pipe bending machine isn't as simple as it seems. Many variables are involved, making this a difficult task. A further complication is the tendency for many operators to adjust various pressure settings to compensate for poor tooling setup. The bend might turn out okay, but at a cost—a loss of process control and shortened tool life. Using a simple four-step setup process is the key to good bending, process control, and optimal tool life. This setup procedure also facilitates troubleshooting.
February 12, 2008
With the gap between new projects and available welders only expected to widen, welding companies have to make up the difference by utilizing machines that can compensate for the labor shortage and maximize the productivity of available welders. New developments in orbital welding technology are helping companies address these tasks. Today orbital welding equipment incorporates production monitoring and analysis capabilities and is designed to be simpler to use. In continuing to advance the technology, welding equipment suppliers probably will take more of an integrated approach, tackling projects using automation and machines that combine preparation and welding operations into a comprehensive tool.
December 11, 2007
If you bend tube for a living, you have many choices when it comes to buying a new piece of bending equipment. Understanding how bending demands have changed over the decades and how bender manufacturers have responded are two key components in selecting the optimal bender for your particular application.
November 6, 2007
Successful end-forming requires much more than designing the tooling and selecting a machine. Fabricators have many choices in tooling (substrate, temper, and coating) and in the end forming machine design. Investigating all the options is necessary for creating an efficient setup.
September 11, 2007
In an effort to reduce the need for cleaning bent tube, fabricator R & B Wagner analyzed its operations and decided to change from manual lubricant application to an automated system. The result was that its lubricant consumption dropped 70 percent. So little lubricant was left on the bent parts that the company eliminated the cleaning step.
August 8, 2007
Mechanized pipe GTAW was first introduced about 50 years ago for nuclear power plants, and then for steam-generation components and process piping. Orbital FCAW was developed to overcome the limitations of orbital GTAW for large-diameter, heavy-wall pipe. With orbital FCAW, deposition rates of 8 lbs./hr. are achievable. Just as a power saw is a tool for a carpenter, orbital welding systems are a productivity tool for the welder that empower him or her to weld faster and more accurately.
July 10, 2007
While rotary draw bending is the mainstay of the tube bending industry, variable-radius bending is making some headway. Variable-radius bending offers many advantages, primarily more sophisticated bends and faster cycle times. However, it has limitations, too. A main one is that an initial bend must be a minimum of approximately 15 degrees.
July 10, 2007
Anodizing combines with nature to create one of the world's best metal finishes. It is the process of electrochemically controlling, accelerating, and enhancing oxidation of an aluminum tube, creating a durable, scratch-resistant coating on the surface comparable to a sapphire. Architectural anodize finishes are limited to certain colors, and it is impossible to produce a perfect color match. Perform as much bending and forming as possible before finishing.
June 12, 2007
Stealth Manufacturing Inc., Savage, Minn., is a tube fabricator, and machine tool builder that automated its tube punching, laser cutting, and material handling to improve the efficiency of manufacturing its gas heater tubes and other tubular products.
June 12, 2007
Following four specific guidelines for operating the rotary cutoff machine can help you avoid making simple mistakes in setup and operation that can cause downtime.
May 8, 2007
All-electric tube bending machines use electric, closed-loop servomotor axes to control the motion and speed of the bend tooling, providing programmable control over the range of each axis. Otherwise, all-electric tube bending machines are basically rotary draw benders—the design of which have not changed significantly for 50 years.
April 10, 2007
Senior Editor Eric Lundin traces the history of a machine shop-turned-fabricator. Founded in 1984 as Target Boring, the company changed from a machining shop to a fabrication shop when, in 1994, it purchased its first sheet and plate laser cutting system. Now named Target Laser & Machining Inc., it boasts three lasers for sheet and plate (two 2-D machines and one multiaxis machine) and one for cutting tube.