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Fighting springback in profound radius bends

September 17, 2001

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When bending sheet metal, three terms apply to the radius of the bend: sharp, radius, and profound. A sharp bend has a radius less than 63 percent of the material thickness. A radius bend has a radius between 63 percent and 10 times the material thickness. A profound radius exceeds 10 times the material thickness and an entirely new set of rules apply. This article presents those rules.

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Selecting the right materials for roll forming—Part 2

September 13, 2001

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This is the second part of a two-part article. Read Part I. If you examine the mechanical properties of several materials, including carbon steel, alloyed steel, stainless steel, as they relate to roll forming, you'll gain an understanding of the influence of some primary metal processes on roll forming.

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Selecting the right materials for roll forming—Part 1

September 13, 2001

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This is the first part of a two-part article. Read Part II.If you >examine the mechanical properties of several materials, including carbon steel, alloyed steel, stainless steel, as they relate to roll forming, you'll gain an understanding of the influence of some primary metal processes on roll forming.

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Standardizing finger tooling

September 4, 2001

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Modular, adjustable, articulated finger tooling for transfer presses may provide the flexibility you need to increase productivity and efficiency in your stamping operation.

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Changing the way they do business

September 4, 2001

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Dealing with work loads, delivery schedules, and many other responsibilities doesn't leave managers with much time to consider factors that justify equipment improvements.

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Boosting efficiency in solid state welders

September 4, 2001

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This article, reprinted from the January/February 1999 issue of TPJ-The Tube & Pipe Journal, is based on excerpts from Thermatool Corp.'s "High Frequency Pipe & Tube Welding Manual."

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Recovering from press overload: Protection systems help to sense overload and minimize machine, tool damage

September 4, 2001

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This article discusses what hydraulic overload protection system is and gives a brief description of the three main types.

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Presenting coil to a tube mill

September 4, 2001

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Tubemakers looking to improve operations at the front of the mill should consider factors such as coil preparation before feeding it into the tube mill—end joining, removal of overthickness, burr up/down condition, and accumulation.

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Putting a spark into cutting productivity

September 4, 2001

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There are many ways to cut sheet, plate, tubing, and structural shapes, ranging from a hand hacksaw to power shears and lasers.

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Exploring complementary cutting methods

September 4, 2001

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The various cutting methods available to fabrication shops today can be both a little daunting and very beneficial. Choice is good--learn how to make the most of the diversity all your choices offer to you.

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Maintaining an RF tube and pipe welding generator

September 4, 2001

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This article separates the RF generator into seven major subassemblies and then gives tips for finding and preventing problems in each subassembly.

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Accumulating strip before the mill

September 4, 2001

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Figure 1:Strip can be stored in a deep pit, where it will hang in a loop.In simple terms, a strip processing line consists of a device to hold a supply coil of strip and a device to perform an operation to convert the flat coiled strip into a product.In tube mill operations, a supply coil is...

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Skiving strip edges for tube and pipe producing

September 4, 2001

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Edge treatment of coil strip before it enters a tube and pipe mill, called skiving, is a rapidly advancing technology. Improving the coil edge before it is welded helps increase the quality of the seam join and helps prevent rejected tube or pipe.

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Robotic arc welding gets smart in real time

September 4, 2001

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Whether you're dealing with low part counts or wild welding variables or the challenges of just-in-time production, monitoring software can help smooth your operation.

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Stamp of Approval: Full-court press safety: How to maintain an effective safety program end to end

August 23, 2001

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If you want a safe press operation, look beyond the machinery. Don't be surprised to find the keys to a good safety program well outside the confines of the pressroom.

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