Content tagged with "temperature"
Results: 27
Article
May 15, 2006
Troubleshooting Guide for Cleaners
This guide is part of an article series " Flushing out four-letter words-rust, dirt, and wear; Part II: Removing soils effectively ," by Mike Pelham, International Chemical Co., Philadelphia, reprinted from the June 2006 issue of The Tube & Pipe Journal®. The article addresses how to... Read more...
Article
September 13, 2005
Keys to success in laser welding
A technician explains the features of an Nd:YAG laser. Involving production personnel early in the process is an important way to ensure the success of a laser project.
Engineers and project managers sometimes reduce the success of a manufacturing process to a few... Read more...
Article
December 11, 2003
Welding's effect on strengthening steel
As I mentioned in the September/ October issue, welding can severely influence strengthened or hardened metals, depending on the hardening technique used. Hardening Techniques and Welding Effects Work- or strain-hardened metals exposed to the intense localized heat of welding tend to... Read more...
Article
November 6, 2003
Choosing the right oxyfuel gas and supply system
Photo courtesy of Weldstar Inc. Cutting In oxyfuel cutting, an oxygen jet, not the preheat flame, performs the cutting. The oxygen jet oxidizes the material and expels the heated material from the kerf. The purpose of the preheat flame is to heat the material to the ignition... Read more...
Article
October 9, 2003
Making steels stronger
As we get into modifying a steel's strength and hardness, keep a couple things in mind. First, don't confuse hardness with hardenability. A steel's maximum hardness is a function of its carbon content: more carbon, more hardness. Hardenability, on the other hand, refers to the amount of... Read more...
Article
September 25, 2003
Article
August 14, 2003
Keep it clean
A variety of technologies for treatment of industrial waste fluids produced by metalworking processes are available. Some of these technologies can treat waste from complex waste streams, even commingled, and allow you to reuse the water in your forming processes. Waste Treatment Options... Read more...
Article
June 26, 2003
Phases, structures, and the influences of temperature
But phase changes can take place in many metals while still in the solid state. These phase changes are directly related to temperature and take place in the metal's crystalline structure. And while temperature is what controls these transformations, stress, cooling rate, and alloy or chemical... Read more...
Article
June 26, 2003
Tooling tricks of the trade
Just make it work!" they scream. "I don't care how Just make it work!" As a tooling professional (whether you are a tool- and diemaker, engineer, press operator, or any other member of the team responsible for operating and maintaining that die), you quickly find that "making it work" is... Read more...
Article
June 26, 2003
The little-known life of the scarfing tool
Just kidding, but I'm sure you get my point. Scarfing tools are pretty boring compared to the greater issues we face since 9/11. I pray for world peace right there with anybody who will listen. But then again, I've been asked many times why tools don't last or why they break after only a short... Read more...
Article
June 26, 2003
Making hands-free straight, saddle, and miter cuts
Since its inception in 1969, the company had used traditional, manual processes. Pipes were moved into and out of the work area by forklift, and pipe cutting was done with either a hand-powered mechanized torch or a hand-held torch. For straight end cuts, an operator attached a... 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
April 24, 2003
The structure of metal
As you think about molten metal, keep a couple of points in mind. First, heat flows to cold-always. And that becomes more understandable when you consider that warm atoms are moving faster than cold atoms. And those fast-moving atoms are bumping into other atoms, causing them to move quickly.... Read more...
Article
November 17, 2002
Secrets of Using GTAW for Tools and Dies
Tool and die welding can be a very lucrative service for a fab shop to offer. However, tool and die welders are a rare breed because of lack of knowledge about the process and the extra expense for a shop. Gas tungsten arc welding (GTAW) frequently is used for tool and die welding applications... Read more...
Article
July 26, 2002
Repair Brazing: Fixing Faulty Jobs and worn-out components
Brazing is a versatile process used in many industries to join materials permanently. Repair brazing is an essential part of the industry and usually is done for one of two reasons—to braze repair parts in-house before they are released to customers and to perform repairs on brazed... Read more...
Article
December 13, 2001
It's all about precision, craftsmanship
Consider the various applications for microwelding and some of the first images that come to mind are the highly intricate weld operations performed on hardened tool steels and machined weldments—synonymous with a high level of precision and craftsmanship. An increasingly large... Read more...
Article
December 13, 2001
When sparks fly ...
While an arc welding unit was being used on the second floor in a Kaukauna, Wisconsin, warehouse, sparks dropped through an opening to cardboard boxes below, igniting the boxes. There was no fire watch on the first floor, and when the fire was discovered 15 minutes later, employees could... 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 15, 2001
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 13, 2001
Selecting the right materials for roll forming—Part 2
Alloyed Steel In addition to carbon, large varieties of metallic and nonmetallic elements are used to achieve the desired mechanical properties and corrosion resistance. The most frequently used alloying elements are manganese, cobalt, chromium, copper, molybdenum, vanadium, nickel, zirconium,... Read more...
Article
July 12, 2001
Article
June 15, 2001
Article
May 15, 2001
Article
April 24, 2001
What you don't know about spot welding
To most manufacturers, spot welding is the most economical way to join two pieces of sheet metal. While joining sheet metal is the most common use for the process, resistance welding (RW) equipment actually can be used for a large variety of joining and heat-treating projects, some of which are... Read more...
Article
February 19, 2001
Cutting die-related costs: Where to look to save money
I want it cheaper. I want it better. I want it faster, preferably yesterday. The pace of business in the metal stamping industry continues to escalate. And the trend is not going to reverse. Balancing cost against quality and time can be a real challenge. Add to that the pressures of... Read more...
Article
February 19, 2001
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