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Feed to registration

August 8, 2006

For applications such as clutch disks, oil seals, oil filters, and other round stampings, feed to registration with scroll-slit material can reduce scrap rates and, in some cases eliminate the need to retool the job.

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Getting hydraulic press problems under control

August 8, 2006

Arco Industries Inc. bought a 15-year-old, 500-ton Tranemo hydraulic punching press with an antiquated control system. For about one-quarter the cost of a new press, Arco was able to rejuvenate an obsolete press by providing it with contemporary levels of control and productivity.

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The formula for successful punching

August 8, 2006 | By Andy Spence-Parsons

While the first step in successful punching is to pay close attention to the quality and features of punching tooling, other factors come into play. Punched slugs are clues, and examining them can reveal whether the punch and die clearance is too loose or too tight and whether the machine is properly aligned.

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Die Basics 101: Part IX

August 8, 2006 | By Art Hedrick

Part VIII of this series discussed some of the specific mechanical properties of metals—ductility, elongation percentage, tensile and yield strength, and hardness—and how to derive these properties. This article describes other important mechanical properties, as well as a few behavioral...

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Theme railings can equal higher earnings

August 8, 2006 | By Dona Z. Meilach

With careful planning and proper estimating, fabricating commissioned metal gates and railings can be a lucrative endeavor. This article describes the process for designing, pricing, and creating these unique and often intricate structures based on client preferences. It includes examples of beautiful pieces constructed from copper, flat steel, and iron.

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Modern flying shear tube cutoff systems

August 8, 2006 | By John Pavelec

Modern flying shear tube cutoff systems comprise state-of-the-art mainframes, tools, and controllers. This article, Part I of a three-part series, discusses the different types of mainframes, their capabilities, and construction. It describes and includes images of the construction process from start to finish.

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A breath of fresh air

August 8, 2006 | By James Rogowski, Mickey Lawson

Two standard laser assist gases are oxygen and nitrogen. However, a third gas — shop air — has become a viable alternative.

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Starting a portable GTAW business (Part I)

July 11, 2006 | By Phil Evans

Starting a portable GTAW business takes a lot of hard work and dedication, but it also requires some solid business knowledge before getting started. It's important to learn about what equipment you need, how to set it up, and how to evaluate your welding before you take your first job.

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Warm forming of stainless steels - Part I

July 11, 2006 | By Ajay Yadav, Giovanni Spampinato, Taylan Altan, Ph.D.

To prevent martensitic transformation in stainless steel during drawing operations, warm forming has been explored. In experiments, warm forming eliminated intermediate annealing operations and substantially increased limiting draw ratio values.

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Starting a portable GTAW business Part II: Know your customers

July 11, 2006 | By Phil Evans

Thinking about starting your own portable GTAW business? This installment in a series about this topic focuses on the potential customer base and the welding repair needs of specific segments. It also offers pricing tips for various jobs.

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How do you measure success?

July 11, 2006 | By W.B. "Bud" Graham

Contrary to common opinion, a high production rate is not the key to success in making tube. Attempting to low-ball the price — while cutting corners in maintenance and upgrades -- is a poor strategy in this industry. Columnist Bud Graham provides four production scenarios that compare various rates of capacity utilization and line speed and how these affect profitability.

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Angling for a good cut

July 11, 2006 | By Al Terronez

Good sawing and maintenance practices can help alleviate problems that can occur when making angle cuts in structurals and tubing. Addressing the stock, machine setup, the blade, the cutting fluid, and the saw itself may not completely rid fabricators of problems, but it can help keep the operation profitable and relatively painless.

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Introducing cold pilger mill technology

July 11, 2006 | By Oliver Strehlau

The cold mill pilgering process uses ring dies and a tapered mandrel to reduce tube cross sections by up to 90 percent. Because the process relies on large number of small forming steps, the result is tube or pipe that has nearly homogenous material characteristics. It is suitable for every metal.

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Laser cutting 3-D preformed parts

July 11, 2006 | By Tim O'Donnell

This article describes how a fabricator can use the advances in modern CAD/CAM software to cut preformed parts quickly on a sophisticated, multiaxis rotary laser. It specifically examines surface data cleanup, conversion, work envelope check, cutting simulation, fixture design and code generation, and fixture cutting and positioning options of newer programs.

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Sheetmetal software: Nothing soft about it

July 11, 2006 | By Kevin Cole

Software continues to evolve to better serve its users, and during recent times, sheet metal fabricators have been trying to get the most out of their systems. Such things as nesting, ERP, communications networks, and CAD/CAM are all making bounds to do more and take better advantage of technology advancements.

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