Tube and Pipe Fabrication

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.

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Deburring

Reviewing forming, expansion, and bending applications for welded tube

September 18, 2001

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Tube used in production processes that form a part by expanding or bending the tube

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Quenching and tempering of welded carbon steel tubulars

July 29, 2001

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The quenching and tempering of tubes include a number of variables that can have a profound effect on the process and the finished product.

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Magnetic pulse welding figure 1

Magnetic pulse welding for tubular applications: Discovering new technology for welding conductive materials

July 26, 2001

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A review of how magnetic pulse welding works, in what applications it can be used, and what considerations users must take to perform it properly.

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The growing use of orbital tube welding

July 12, 2001

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Although orbital tube welding has been used in aerospace, semiconductor, and other high-purity applications for a long time, general industrial markets just now are beginning to view it as a viable and economical option for joining stainless steel tubing.

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Optimizing robotic laser cutting of hydroformed tubes

May 15, 2001

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Hydroformed and rectangular cross-section tubes have become popular for new truck and sport utility vehicle (SUV) frames, engine cradles, roof pillars, and suspension members.

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Selecting the right temporary coating: Choices abound for tube and pipe applications

April 24, 2001

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Tube and pipe manufacturers should consider carefully environmental laws, cost, quality, and the cost of a coating line before deciding on a temporary coating for their products.

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Automating your end forming operation: How to maximize efficiency in the shop

February 19, 2001

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Efficiency, productivity, and quality are focal points for end forming operations, and many manufacturers are looking to automation to improve those dimensions of their businesses.

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Orbital welding for space program applications: Producing welds that withstand the rigors of deep space

February 19, 2001

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Welding applications in the aerospace industries demand high precision, a quality that can be entirely as low as possible. Automatic orbital welding is being used to help meet these requirements.

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Making the cut - Understanding rotary cutoff blades and extending blade life

May 1, 1999

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The rotary cutting process rotates a tube or pipe and cuts it with a rotating blade. The blades are beveled to various angles and produce a chamfered end on the workpiece. Selecting the right bevel angle is the key in getting an optimal combination of end finish and production rate. Proper alignment and clearance, the use of a lubricant, frequent inspections, and proper sharpening are the keys to long blade life.

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The basics of rotary cutting

April 7, 1999

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The rotary cutting process rotates a tube or pipe and cuts it with a rotating blade. Because it is a chipless cutting method, it does not waste any material and reduces or eliminates subsequent deburring and cleaning operations. Although it can be used on any metal, it is not suitable for every application. The cutting action produces a slight chamfer on the end of the workpiece, so it is not useful for applications that require a square end. Machine types include manual and pneumatic. Accessories include cutter block assemblies that support the workpiece during the cut; length gauges for repeatable cut lengths; and feed systems that store and feed the material into the cutting machine.

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