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Material property variations in tubes used for hydroforming

October 10, 2002

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As tubular hydroforming becomes a competitive process for the mass production of automotive parts, a tube's material properties must be consistent. To predict variations in material properties, many tube producers use the uniaxial tensile test. Because the specimens for the tensile test are collected before a tube is bent and welded, they are not always accurate. To predict variations in tube property accurately, it should be tested under a biaxial state of stress.

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Nucor Corp Plant

Man of Steel: FABTECH keynote speaker Ferriola discusses harnessing change in steel

October 10, 2002

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Nucor Corp., recycler and manufacturer of steel products, is using new technology, such as the HIsmelt® process and the micromill, both of which are allowing them to start out with thinner steel strip to more efficiently process steel for its customers. John Ferriola, executive vice president of the Sheet Mill Group at the company, will address these technologies and how steel industry changes can positively affect steel consumers.

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Tube Hydroforming Design Flexibility—Part II

October 10, 2002

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It's difficult to overemphasize the importance of cross section expansion when you're talking about successful and innovative hydroforming of steel tubing. Overemphasizing one aspect of the tube hydroforming design process can take attention away from others and result in less than optimal design....

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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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Signal equipment house

Metamorphosis: Topeka fabricator automates to emerge

October 10, 2002

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A contract manufacturer of railroad and telecommunication signal house enclosures had long relied on job shops to supply the sheet metal parts, which it then assembled. But the president, Patti jon Christensen, wanted to bring all the manufacturing under her own roof so she could build the company's future on parts that met her company's quality standards and timely deliveries. The company installed a flexible manufacturing system (FMS) from Finn-Power in March 2000 and has achieved its goals, to the point that it plans to add a second FMS.

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Deep drawing aluminum—not as hard as it looks

October 10, 2002

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Keeping a couple key tips in mind can help you turn aluminum stamping from a source of frustration to a source of income and satisfaction in a hurry.

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Analyzing tubes, lubes, dies, and friction

October 10, 2002

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Comparing and correlating two tests, a common bench test (twist compression) and a straight-tube corner-fill test, simulate hydroforming to find the coefficient of friction.

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bill capozzoli plaque

A monument(al) rememberance

October 4, 2002

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Welder Bill Capozzoli owns and operates a small specialty fabrication company. He works with architect Phillip Conte to fabricate a memorial made of stainless steel to honor fallen Delaware County, Pa. law enforcement officers.

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What the well-dressed welder is wearing

September 26, 2002

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Dressing properly for welding involves many facets of safety, including proper use of personal protective equipment and welding tools as well as protective apparel. Welders should be aware of the hazards they will face on their job and know to dress for them so they can protect themselves from all possible potential welding dangers, from sparks and spatter to fumes and electrocution.

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Absolute Control: Implementing a master control system for hydraulic press lines

September 26, 2002

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Advanced master control systems in hydraulic press lines are designed to help achieve shorter changeover times, transparency of line operation, minimize personnel requirements, and increase productivity levels and uptime.

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Set loose the juice

September 26, 2002

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As in other facets of welding equipment technology, arc welding power sources are evolving as fabricators' needs change. Electronics is playing a large role in power source modernization as power source equipmentmakers begin to employ digital interfacing, Internet access, software control, and other innovations to these machines.

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Canada sighs, strategizes

September 26, 2002

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The exclusion of Canadian steel producers from restrictions on imports to the U.S. was a relief after months of uncertainty. The Canadian steel industry wants to ensure that the Canadian market does not become a back door for imports into the U.S. Keeping the industry strong by opening new markets, developing lighter, stronger and more corrosion-resistant steel products, and working closely with the automotive industry is vital to that goal.

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Production economics

September 26, 2002

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Communicate your production economics in meaningful ways to your clients. Be clear about how you measure performance and regulate processes.

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Filter lenses for protection against radiant energy

Saving face: What to look for in safety eyewear and facial protection

September 26, 2002

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According to OSHA, it is estimated that 9 out of 10 occupational related eye injuries could be avoided through the use of proper safety equipment. OSHA's 1910.133 places the responsibility for eye safety squarely on the shoulders of the employer. Goggles, spectacles and face shields protect the eyes and face from impact from flying particles, hot sparks, liquid chemicals and vapors. In addition, protective eyewear constructed with special shaded lenses rated from 1-15 offer protection against injurious light radiation and glare.

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Airless sprayed part figure 1

Tooling: Lube it or lose it

September 26, 2002

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Most metal forming operations use lubricants to protect the tooling and part from excessive wear caused by scuffing, scratching, scoring, welding, and galling. Four lubricant families are commonly used in pressworking, and thousands of formulations are available within each chemical family. The physical characteristics of the lubricant and metal forming operation involved determine the application method to be used.

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