Content tagged with "profiles"
Results: 45
Article
April 1, 2009
Bending rolled steel sections
Bending tube or pipe successfully is a matter of managing a handful of processes and variables. For example, the bending process causes thickening where the metal is under compression and thinning where it is under tension. Too much thickening can result in wrinkles; too much thinning results... Read more...
Article
September 30, 2008
Understanding bending, moving material in roll forming
Figure 1 Click image to view larger The flower diagram for a formed box shows two distinct forming actions: rotation and horizontal movement. In simple terms, roll forming is a matter of shaping material using localized deformation with a large amount of material movement. Localized... Read more...
Article
May 13, 2008
Edge treatments for roll formed parts
According to data gathered by the Occupational Safety and Health Administration (OSHA) and the Bureau of Labor Statistics (BLS), the steel industry's safety record improves every year, especially in injury severity. Because the incidence of lost-time(severe) injuries has fallen more quickly than... Read more...
Article
April 10, 2007
Roll form tooling design for air bending
When a bend is formed with the air bending process (air bend), the interior of the bending corner can't be reached by either the top roll or the bottom roll, making it difficult to control the part's profile and dimensions. Figure 1 illustrates a typical air bend. The theoretical formed profile... Read more...
Article
April 10, 2007
Roll forming high-strength materials
Figure 1 A forming force that exceeds a material's yield strength results in plastic deformation, which holds the metal in the shape to be formed, and elastic deformation, which results in springback. The light crosshatched pattern indicates the areas of plastic deformation. The heavy... Read more...
Article
November 9, 2004
Weld repair—Analyze the failure before attempting the repair
Failure Analysis Almost anything can fracture. The science investigating the origins of fractures is called failure analysis , and it is used to establish responsibilities for fractures and to determine preventive measures for avoiding future occurrences. An introductory, interesting... Read more...
Article
March 11, 2004
Article
March 11, 2004
Flying high with orbital welding
The first machines developed were large, upright, stationary systems that could be used only for workshop applications. These systems also had to make several rotations to complete a joint because only single-level power supplies were available. To make consistent welds, they had to make... Read more...
Article
February 26, 2004
Selecting the right tungsten
But this isn't as true anymore, as the welding industry has shifted toward using inverter-based AC GTAW machines that incorporate square wave technology. Selecting the right tungsten becomes an increasingly critical issue with inverter technology to maximize its benefits. In the past pure... Read more...
Article
January 29, 2004
Article
January 13, 2004
Producing side-impact profiles
Euro-NCAP, which stands for European New Car Assessment Program, was introduced in 1997 by five European governments, together with the European Commission. The results of this program are followed closely by the general public, so much so that hardly any automobile producer would risk... Read more...
Article
January 13, 2004
One system does not fit all
Breathing is something that many of us take for granted. Most don't give it a second thought—you inhale, you exhale. That's about it. But recently, and not just in manufacturing, the trend has been for employers to install better ventilation systems and provide better air... Read more...
Article
December 11, 2003
Getting the best results in gas-shielded FCAW
The demand for flux cored arc welding (FCAW) has grown significantly over the past 10 years. Manufacturers who weld carbon, stainless, low-alloy, and high-alloy steel are turning to this process primarily because: It has a high deposition rate. It can be used to weld in all positions... Read more...
Article
November 6, 2003
Is your company a breeding ground for workplace violence?
Approximately 2 million U.S. workers are victims of workplace violence each year. In 1997 the National Institute of Occupational Safety and Health (NIOSH) reported that an average of 20 workers are murdered each week in the U.S., and an estimated 18,000 per week are victims of nonfatal... Read more...
Article
November 6, 2003
Article
October 23, 2003
March for manufacturing
Yes, the issue is on the radar screen. People are talking about it. E-mails are racing around the Internet. Letters are being written. Industry associations are working hard to educate, raise awareness, and get attention. The Metals Service Center Institute (MSCI) organized a Town Hall... Read more...
Article
October 23, 2003
Plotting for success
Another way of looking at this is that we get so tied up in the day-to-day grind that we forget or ignore the deteriorating conditions in the forming mill and tooling until a customer complains about weld splits. We lose our edge, figuratively and literally, and it shows up in nonparallel edges... Read more...
Article
October 23, 2003
Blast Cleaning Equipment: What you need to know before buying
Many options are available that can achieve the necessary prefinish requirements of any part. Of those options, blast cleaning can be an efficient and economical choice. Blast cleaning requires no chemicals and does not remove any surface metal in its process. Some facts however, should be... Read more...
Article
September 25, 2003
Pour me a mandrel
A low-melting-point alloy is heated and poured into a length of tube. To reduce weight and cost for all types of products, design engineers often specify tubes and pipes with thinner walls instead of the previously used heavier-walled tubes and pipes. Shorter tube or pipe lengths also... Read more...
Article
September 25, 2003
Roll formers look for a win
Many systems enable users to download a DXF drawing directly into the roll forming line's computer. Not everyone can be the New York Yankees, or even the roll forming version—especially in today's economic climate. It would be nice, though. The Bronx Bombers have used a fat wallet... Read more...
Article
August 28, 2003
Article
July 24, 2003
Die width selection
Most designers and engineers usually place very little importance on achieving the correct inside radius of a formed part. Why? Because the functionality of the part is unaffected if the specified inside radius is 0.062 in. and actual measured inside radius is 0.078 in. So why do we care about... Read more...
Article
July 24, 2003
Improving blank edge conditions
Blanking—like piercing, parting, notching, and trimming—basically is a shearing process. Sheet metal that is sheared undergoes a predictable process and yields a predictable cross-sectional profile. Typically during shearing, as the punch initially engages the sheet metal, it... Read more...
Article
June 12, 2003
Understanding weld discontinuities
A welder's primary concern in any kind of work is ensuring his weld is sound. For this reason, it's important for an inspector examining the weld to be able to spot a variety of weld discontinuities, including: Porosity. Incomplete fusion. Incomplete joint penetration. Unacceptable... Read more...
Article
June 12, 2003
Designing high-strength steel stamped parts for formability
The problems associated with forming high-strength steel often are created during the design stage, when products are designed in such a way that they cannot be manufactured using conventional stamping methods. Or the product requires numerous or special offline operations, such as annealing or... Read more...
Article
May 29, 2003
Roll form tooling tryout and troubleshooting
The secret to developing successful roll tooling—whether for tube production or roll forming—and achieving maximum roll integrity is a simple but often overlooked notion: a comprehensive approach. Such an approach comprises five steps: Designing the roll tooling... Read more...
Article
May 29, 2003
Making your own punch and dies
Speaking from 30 years of experience, I'd say this situation probably is a fact of life for 99 percent of us. Whether we are doing some in-house engineering and design or working at the press brake, the thought is the same.
An End to the Dilemma
Sure enough, there is a reasonable solution... Read more...
Article
May 15, 2003
Finding the best splice for your light-duty conveyor
In most light-duty conveyor systems, one of the key factors in obtaining conveyor uptime is achieving the optimal splice. Reviewing the available alternatives in light of the realities of your conveyor system will suggest which type might serve your needs best. Belting designed for... Read more...
Article
November 29, 2001
Making the most of the daily grind
The design and production of abrasives have kept pace with other advances in the welding industry, making grinding and finishing products more effective than ever in helping fabricators to lower costs and improve productivity. Grinding equipment and accessories for this industry are available... Read more...
Article
November 15, 2001
Article
November 15, 2001
Using hydroforming aluminum components versus steel stampings
As the name implies, hydroforming is a metal forming process that uses water as a forming medium. In the case of tube hydroforming, a tubular workpiece is placed between two mating die halves. The tube is sealed, normally by metal mandrels inserted under pressure in each end of the tube. Water... Read more...
Article
September 17, 2001
Making seamless tubing with a floating mandrel mill
Every six seconds, a single, 32-foot length of oil country tubular goods (OCTG) production tubing used in the exploration and production of oil and/or gas is produced. More than 20,000 miles of tubular product a year can be produced using the floating mandrel mill seamless tubular production... Read more...
Article
September 17, 2001
Monitoring laser beam performance
In the last 20 years, the use of industrial lasers for cutting, drilling, welding, marking, and cladding has increased dramatically. Industrial lasers, unlike their laboratory cousins, are not designed with continuous monitoring in mind. The laser often is assumed to be operating at peak... Read more...
Article
August 16, 2001
Sharpening for a longer life
Taking a little extra time when performing routine maintenance on your stamping tools can produce big dividends in tool life and reliability. Production stamping tools typically use hardened tool steel insert components, such as punches, matrixes, and die steels, to perform cutting,... Read more...
Article
August 16, 2001
In search of the perfect bend
Press brake manufacturers have made tremendous advances in the art of machine design and manufacturing. Machine frame components are designed to use proven mechanical engineering principles combined with CAD technology to identify the areas most susceptible to stresses consistent with the metal... Read more...
Article
July 12, 2001
Thermal spray safety and OSHA compliance
Object Thermal spray equipment normally is operated in special enclosures designed to reduce noise levels, extract fumes, and provide direct viewing of the spray nozzle when it's used in high production environments. Occasionally R&D projects, large parts, low production runs, or complex... Read more...
Article
July 12, 2001
The growing use of orbital tube welding
This trend is due partly to orbital welding's capability to make an entrapment-free, permanent connection that is highly resistant to vibration. This makes it a good choice for joints that are not intended to be disassembled in the future. However, the appeal of orbital welding also is due to... Read more...
Article
July 12, 2001
Article
May 30, 2001
Key design principles for successful deep drawing
Successful deep drawing depends on many factors. Ignoring even one of them during die design and build can prove disastrous. However, regardless of the many factors involved, the most important element to a successful deep drawing operation is initiating metal flow. The following are key... Read more...
Article
May 15, 2001
Mill coolant system design
Coolants are used to wash away oils, oxides, slivers, and dirt generated during the forming, welding, and sizing of tubes and roll-formed profiles. These coolants are a mixture of water and refined chemicals that help cleanse the process, protect part finish, extend tool life, and inhibit rust... Read more...
Article
February 19, 2001
Article
February 19, 2001
Article
February 19, 2001
Article
February 19, 2001
Article
February 19, 2001
Joining aluminum with GTAW: Advice for the novice
Aluminum: beautiful, lightweight, strong, versatile—and a real challenge to weld, especially for beginners. This article describes some of the new gas tungsten arc welding (GTAW) equipment available and its benefits, accessories required, points to consider before welding, and the... Read more...
Didn't find what you were looking for? Try our search page to refine your results
