Article
March 9, 2009
Titanium trends
Although titanium was discovered in the late 18th century, it wasn't until 1940 that a metallurgist, Dr. William Kroll, first devised a commercially viable process for extracting the metal from its raw ore. In the 1950s titanium was recognized for its high strength and light weight, making... Read more...
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
Three optional techniques for beveling
All of these methods generate no dust or fumes and produce paintable edges without distortion or a heat-affected zone (HAZ). Finished edges have consistent angles along the bevel's entire length. Punch and Nibble Method Punch and nibble-style bevelers are portable power tools... Read more...
Article
February 26, 2004
Do you see the light?
To be more specific, fabricators may be missing out on an opportunity to pocket some savings if they haven't taken a close look at how their operations are consuming energy. And with the economic environment as tough as it is, many fabricators probably are concentrating more on the... Read more...
Article
February 12, 2004
Cutting through five myths about modern lasers
The following five myths about modern laser cutting machines can help the experienced user stay on top of the game and give the prospective laser user a few things to keep in mind. Myth 1: Automated laser cutting systems are too complicated, expensive, and big for small and medium-sized... Read more...
Article
January 13, 2004
Beating 'world' pricing
This Finn-Power Express Bending Cell, which automates complex bending and reduces tedious and costly work stages, has last bend negative capability and fully automatic operations cycles—from loading the sheet to unloading the bent parts. "I have a precision sheet metal shop and... Read more...
Article
January 13, 2004
Rolling bolsters bolster productivity
Shown out of the press, the guided wheels on this 120,000-pound rigid chain rolling bolster are evident on the front face of the bolster. One element of changing dies in stamping presses quickly and efficiently is the use of a rolling bolster. With this equipment, the operator rolls... Read more...
Article
December 11, 2003
Filling in the blanks
Because of sluggish economies and uncertain markets, the need to hone a competitive edge is more sharply defined. Many stampers are doing this by taking control of their material inventory and production schedules by adding a cut-to-length blank shearing line. An in-house blank... 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
December 11, 2003
Folding technology makes sweeping changes
In particular, sheet metal was used extensively for roofing and building cladding. These applications were well-suited to the swing bending machine's geometry, and the modern metal folding industry was born. A number of German manufacturers began adding powered backgauges with... Read more...
Article
November 20, 2003
Tips to follow before you start beveling
Before starting your next beveling project, use the following tips on grinder and wheel selection to help make sure you're as productive as possible. Size and Weight Most fabricators use 4 1/2- to 6-inch small-angle grinders for small- to moderate-sized bevels, and 7- to 9-in.... Read more...
Article
November 20, 2003
High-tech presses
Figure 1 Complex drive system Stampers are looking to achieve higher productivity, better component quality, longer die life, and increased flexibility. While these capabilities are essential to maintaining an edge in today's competitive environment, they come at a price. New... Read more...
Article
November 20, 2003
Reflection—Getting the most from experience
As a sharp leader, you look for ways to evaluate progress. You know how essential it is to benchmark activities that make you successful and eliminate those that do not. You understand that it's advantageous to evaluate where you have been and where you want to go. This evaluation... Read more...
Article
November 6, 2003
Shedding light on negativity—Part 2
Read Part I . Negative thoughts, feelings, opinions, and comments are normal. Each of us thinks and expresses negative thoughts every day. Often the negatives illuminate problems that need to be addressed. When handled properly, they can lead to positive changes. But when negativity... Read more...
Article
October 23, 2003
Material handling safety
How the material or goods are unloaded or loaded is a key factor in reducing employee injuries. Persons involved in material handling should be able to lift and hold the weight of the material or goods used in their operations. They also must be properly trained in the correct way to lift... Read more...
Article
October 9, 2003
Shedding light on negativity—Part 1
Read Part II .
Are you a negaholic—someone who almost always sees the glass as half or totally empty? Do you live or work with one? If you answered, "No" to both of these questions, I'd like to know what planet you live on. These days—which are rife with economic... Read more...
Article
September 25, 2003
Choosing a GMAW machine for occasional aluminum welding
I want to buy a small gas metal arc welding (GMAW) machine, preferably one that runs from 120-V input power. Most of my welding will be steel, but I would like to weld aluminum occasionally. Can these machines really weld aluminum? I've heard a lot of different opinions. Some companies claim... Read more...
Article
September 25, 2003
Supporting the defense
United Defense's motto is Changing the future of defense™. One of its latest missions toward this goal was to introduce a direct diode laser into its Aberdeen, S.D., manufacturing facility. The company designs, develops, and produces combat vehicles, artillery, naval guns, missile... Read more...
Article
August 28, 2003
Inverter versus transformer power supplies for aluminum GTAW
I'm looking for a new GTAW power supply for AC aluminum welding. I had intended to buy a conventional transformer unit, but several people have told me to buy an inverter-based power supply. Which one is better for my application? Inverter-based power supplies do have some advantages over... Read more...
Article
August 14, 2003
What's driving your press?
They no longer are dedicated to running one product for their entire life, and once dedicated lines now perform versatile tasks and provide flexibility from one job to the next. Whether it's for setup of a servo roll feed, an in-die transfer system, or a complex tandem line, flexibility... Read more...
Article
July 24, 2003
Welding aluminum with inverter-based power supplies
Direct Current All welding power supplies transform relatively high-voltage, low-current incoming power to lower-voltage, high-current welding output using a transformer. In the past the transformer operated directly from 50- or 60-hertz incoming alternating current (AC). At these... Read more...
Article
July 24, 2003
Using inverter technology
Those familiar with inverters usually know they offer size, weight, and portability advantages. They also can improve reliability by overcoming primary power fluctuations, also known as dirty power. Question: Does the weight of the plasma cutter matter? Answer: Yes, because labor... Read more...
Article
July 24, 2003
The business of lasers
From the laser manufacturers' standpoint, the U.S. market for lasers has simply gotten smaller. This is a function of multiple market forces. The slumping manufacturing sector is a major influence, but so is the increased productivity of today's laser systems. At its peak during 1994 and... Read more...
Article
July 10, 2003
Six dangerous misconceptions about crane safety
Nearly every product today has a warning label. In fact, many products have multiple warning labels, lights, and bells. We even have warnings telling us our coffee is hot! It's little wonder, then, that many of us suffer from warning overload and just ignore the warnings. Unfortunately,... Read more...
Article
July 10, 2003
The problem with quality
The companywide scores, which represent the number of problems per 100 vehicles, are as follows: Considerable variation exists among individual divisions of some OEMs. At GM, for example, Cadillac's results prove to be the second best in the survey (103), while Hummer's are the lowest (225).... Read more...
Article
June 26, 2003
Laser-integrated robotics for assembly
Recently a cell phone manufacturer set out to be the first to develop an all-aluminum flip-type package for its ultracompact cell phone. Conceptually, the manufacturing seemed feasible, except for the joining of the materials.
Overlooking the Obvious
In the early phase of... Read more...
Article
June 12, 2003
Dealing with internal pressure in free hydraulic bulging
Finite element analysis (FEA) is a numerical process that treats a single item, such as a metal tube, as a large number of small, individual components, or finite elements. It performs calculations on each of the elements and uses the result to predict the deformation behavior... Read more...
Article
May 29, 2003
Job shop reduces costs, improves laser's output
The Laser Station regulator can be mounted to a secured surface to eliminate movement and potential leakage at the tubing connection.
Such multilevel capabilities enable a customer to reduce the number of vendors it needs, thereby lowering handling and administration... Read more...
Article
May 29, 2003
Robots and dials and knobs—oh my!
It has been said that necessity is the mother of invention. You be the judge. In the late 1950s, the U.S. Navy wanted to find a way to join heavy aluminum structural sections used to fabricate motor torpedo boat hulls. Gas tungsten arc welding (GTAW) offered suitable process... Read more...
Article
May 29, 2003
Getting it Straight
Before coiled material can pass through a die to produce an acceptable part, it must be straightened. Coil straightening is accomplished by bending a strip of material around sets of rollers that alternately stretch and compress the upper and lower surfaces so that the material's yield... Read more...
Article
April 10, 2003
Using narrow-gap GTAW for power-generation equipment
The new shroud was welded with narrow-gap GTAW. The groove in this shroud was open by 6 degrees and 0.28 in. (7 mm) wide at the parallel section. This process allows uniform welding with first-layer penetration in all positions. The wire feed and base metal fusion rates can be... Read more...
Article
March 27, 2003
The art of laser cutting
On modern laser cutting machines, most of the internal functions are automated. Focus point is changed remotely via a cutting database or technology table. Assist gas change and pressure are system-controlled as well. The numerically controlled cutting database has taken over almost all of the... Read more...
Article
April 24, 2002
Using the tandem welding process to your advantage
The idea of welding with two wires is not a new one. Two-wire welding technology has been around for decades. However, only in the past few years has welding power source technology become advanced enough to provide good results with the GMAW process. When using a tandem welding... Read more...
Article
December 13, 2001
Bending tube with an all-electric machine
In the tube bending industry, all-electric, CNC benders are a fairly new development but are gaining ground. They have been commercially available in Europe since 1995 and in the U.S. since 1998. Most manufacturers now either offer all-electric bending machines or are developing them. On... Read more...
Article
November 29, 2001
Ensuring a plant's electrical system safety
Many people work in buildings that were constructed more than 40 years ago. At the time they were built, no one could have imagined the power requirements of the 21st century. An older plant has much more equipment today than it did when it was built, and each piece of equipment pulls... Read more...
Article
November 29, 2001
Mobilizing equipment-saving time and talent
Think about the increased production that would be possible if one operator could manage two machines simultaneously. You could make it work simply by varying access to different pieces of equipment as needed anywhere in your facility.
Of course, some machines on the shop floor cannot be... Read more...
Article
November 15, 2001
Is robotic welding right for you?
Recent shortages of trained labor, combined with advances in technology, present a convincing argument to introduce robotic welding to many factory and job shop operations. When a fabricating company already operating at its highest production capacity gets a bigger contract, it is... Read more...
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November 15, 2001
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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
Laser welding of stainless pressure tubes
The vast majority of welded stainless steel pressure tubing is produced with the gas tungsten arc welding (GTAW) process. This process often is referred to as tungsten inert gas (TIG) welding. However, with the recent advent of reliable, high-power laser power sources, the laser beam... Read more...
Article
July 12, 2001
Turning up the power
Industry trends indicate that metal fabricators increasingly are selecting higher-power lasers for cutting applications. Two years ago, the most common power levels ranged between 1,500 and 2,000 watts. However, a statistical survey conducted by the AMT Laser System Product Group indicates a... Read more...
Article
May 15, 2001
Safety Fundamentals for Today's Industrial Lasers
In today's industrial workplace, lasers are used for cutting and welding metals, bar code scanning, inventory tracking, parts identification, measurement, as well as rapid prototyping. Simply put, the uses are many, and the applications seem limitless.
In a recent report... Read more...
Article
April 24, 2001
Examining electric resistance weld nuggets in tube and pipe
An in-depth examination of electric resistance welding (ERW) weld nuggets as a quality control step in the manufacturing of high-strength tube and pipe used for pressure applications has been a proprietary procedure for some manufacturers for several years. Types of pressure-application tube... Read more...
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February 19, 2001
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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...
