Practical Welding Today®

May/June 2003

Practical Welding Today® was created to fill a void in the industry for hands-on information, real-world applications, and down-to-earth advice for welders. No other welding magazine fills the need for this kind of practical information. Subscriptions are free to qualified welding professionals in North America.


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Selected articles from the May/June 2003 issue available online:

Phases, structures, and the influences of temperature

June 26, 2003

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When you heat or cool a piece of metal to a specific temperature, that metal goes through what's called a phase change, in which its crystal structure changes. Sometimes the change is obvious. For example, when a piece of metal melts, it goes through a phase change when the crystal structure breaks down and the metal goes from solid to liquid. When it solidifies it's also a phase change, as the structure re-forms from liquid to solid.

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Found art

June 12, 2003

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Watching the sparks fly as his dad welded a temperamental posthole digger mesmerized Derek Arnold. "I found the immediacy of something so permanent absolutely fascinating," he said. "I knew I wanted to weld."A hands-on welding education on the family farm drove Arnold to take his skills and creativity to the next level. In 1993 he graduated from the Maryland Institute College of Art in Baltimore. "I've been welding regularly since my freshman sculpture class," he said.

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Aluminum Workshop: Al MIG: CC or CV?

June 12, 2003

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Q: I've read that constant-current (CC) power supplies are preferred for gas metal arc welding (GMAW) aluminum, but when I visit companies that sell welding equipment, they tell me I want a constant-voltage (CV) power supply. What's the real story? Can I use the more common CV power supplies or...

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Loading up on quality, productivity, safety

June 12, 2003

Like the products it manufactures, CNH Global N.V. has to stay on the move—technologically.The company's Wichita, Kan., facility uses robotic weldingto help produce Case- and New Holland-brand skid steer loaders.Powerful yet quick, skid steers can spin on a dime and move heavy loads of...

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Spinning your wheels?

May 29, 2003

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Grinding wheels used in welding and fabrication are strong, tough tools, but many in the industry have called them "rocks" or "stones," implying that they're unbreakable.

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Don't be a hot dog with heating heads

May 29, 2003

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Some call them rosebuds, others call them multiflame heating heads, and a few call them heat sticks. No matter what you call torch attachments, this article is a frank discussion about these tools that use oxygen and a fuel gas to make a lot of heat quickly. When used properly, they can make quick work of many heating jobs.

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Take the old with the new - Selecting saw blades with new technologies in mind

May 29, 2003

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New methods for cutting tube and pipe have been introduced to welding shops in the last few years—methods designed not only to cut metal, but also to cut costs.

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