Eric Theis

Consultant
603 Maple Lane
Sewickley, PA 15143
Coil Shape problem

Controlling flat-rolled shape

February 10, 2009

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What processes do you need to make sure your coil is flat? What is flat enough? You need to determine where you are at the start, where you want to end up, and how to get there. Once you have determined which shape problem you have you can determine which type of equipment is effective in controlling it.

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Straightening mistakes

March 7, 2006

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As a consultant to the industry, the author has had the opportunity to discuss coil straightening and leveling with many people. In this article, he reviews 12 common misconceptions he has heard from those people.

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Everything you need to know about flatteners and levelers for coil processing—Part 4

February 13, 2003

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The best way to eliminate defects in coil shape is to buy prime material. What you get out of any leveler, flattener, or tension leveler is affected by the flatness of the material you put into it.

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Everything you need to know about flatteners and levelers for coil processing—Part 3

January 16, 2003

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Editor's Note: This article is Part III of a four-part series covering flatness and stability in cut-to-length, slitting, and tension leveling operations. This article discusses how coil processors can make metal flat so it stays that way. Part I, which appeared in the October issue of The FABRICATOR®, discussed how flat-rolled metal gets unflat; Part II in the November issue covered flattening solutions and the anatomy of a bend; and Part IV in the January 2003 issue will discuss new applications and options in leveling equipment.

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Precision Blanking System

Everything you need to know about flatteners and levelers for coil processing—Part 2

November 7, 2002

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Editor's Note: This article is Part II of a four-part series covering flatness and stability in cut-to-length, slitting, and tension leveling operations. This article discusses flattening solutions and the anatomy of a bend. Part I, which appeared in the October issue of The FABRICATOR®, discussed how flat-rolled metal gets unflat; Part III in the December issue will address how coil processors can make metal flat so it stays that way; and Part IV in the January 2003 issue will discuss new applications and options in leveling equipment.

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Everything you need to know about flatteners and levelers for coil processing—Part 1

October 10, 2002

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This is article is part 1 of a four-part series covering flatness and stability in cut-to-length, slitting, and tension leveling operations. This article covers how flat rolled metal gets unflattened, including the 3 categories of defects, how defects are created at hot and cold mills, and how coil processors also create defects.

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Flatness in coil processing operations: New turns in the leveling process

August 16, 2001

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Most flat-rolled coil processing operations use some sort of roller leveling technology. Operations people understand what these machines can do to improve the quality of the product they produce. In the competitive marketplace, customers demand and get more that just flat sheets or slit coils.

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