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Articles - Page 236
- From The Welder
Aluminum Workshop: To reheat, not to reheat T4 temper material
- By Frank Armao
- Dec 5, 2014
- Aluminum Welding
- Article
Q: Three years ago I bought 6061-T4 extrusions for a project. My idea was to weld in the T4 temper and then to improve the strength of the weld by performing an aging treatment after welding. The project sat dormant until now. Will the T4 temper material need to be heat-treated again before...
- From The Welder
Aluminum Workshop: Using 4043, 4643 when welding 6061-T6
- By Frank Armao
- Dec 4, 2014
- Aluminum Welding
- Article
Q: Most 6061-T6 is welded using 4043 filler wire. If you heat-treat the weld, will the 4043 get stronger? What happens if I use 4643 filler instead of 4043? A: Is the weld heat-treatable? Well, yes and no. Remember, the first step to producing T6 temper is heat treating at around 1,050 degrees F...
- From The Welder
Aluminum Workshop: Tips for Aluminum Repair and Fixing Cracks
- By Frank Armao
- Dec 4, 2014
- Aluminum Welding
- Article
Find out our expert's answer to a question regarding aluminum repair and how to fix a crack in aluminum. Learn more here.
- From The Welder
Aluminum Workshop: Is aluminum ductile or brittle?
- By Frank Armao
- Dec 3, 2014
- Aluminum Welding
- Article
Want to test if aluminum is ductile or brittle? Learn why Charpy testing is not irrelevant and won't get you the answers you're looking for. Find out more here.
- From The Welder
Friendship and loss on the job
- By Marty Rice
- Dec 3, 2014
- Arc Welding
- Article
A young ironworker learns the value of job friendships, how to make work fun, and how devastating an on-the-job accident can be.
- From The Fabricator
Shop technology and 3-D CAD: Cap-offs, springs, and threads
- By Gerald Davis
- Dec 3, 2014
- Shop Management
- Article
Columnist Gerald Davis shows CAD operators how to use two separate design functions to create the same cap-off treatment.
- From The Welder
Aluminum Workshop: Aluminum-scandium alloys—Strong yet scarce
- By Frank Armao
- Dec 3, 2014
- Aluminum Welding
- Article
Q: I’ve seen various references to aluminum-scandium (AlSc) alloys. Apparently, the addition of scandium makes aluminum alloys stronger. But I never see these alloys used in common welded fabrication. Why? Can I weld them? A: The major aluminum companies experimented with Sc additions to a lot...
- From The Welder
Aluminum Workshop: Sizing up feedability and conductivity in contact tips
- By Frank Armao
- Dec 2, 2014
- Aluminum Welding
- Article
Q: There seems to be a lot of controversy about what size contact tip to use for GMAW aluminum. Can you give me any advice? A: The contact tip has two functions. First, it provides guidance for the welding wire. Second, it provides a means of conducting welding current from the welding torch...
- From The Welder
Aluminum Workshop: The ABCs of anodizing
- By Frank Armao
- Dec 2, 2014
- Aluminum Welding
- Article
Q: What is anodizing? Is it the same as hardcoating, and can I do it myself? Can you weld on anodized parts? A: Anodizing is a process in which a thin, uniform coating of aluminum oxide is formed on the surface of aluminum. Any aluminum alloy can be anodized, but different alloys form anodized...
- From The Welder
Aluminum Workshop: Guidelines for preheating T6
- By Frank Armao
- Dec 1, 2014
- Aluminum Welding
- Article
Q: We are welding 6061-T6 that is ¼ in. to 1 in. thick. To weld the thicker materials we are preheating to 300 to 600 degrees F. We are not happy with the strength of the welds. Is there something we can do, such as heat treating after welding, to increase the strength of the weld? A: You can...
- From The Welder
Aluminum Workshop: What determines aluminum filler strength?
- By Frank Armao
- Dec 1, 2014
- Aluminum Welding
- Article
Q: I’m confused about various aluminum filler metal strengths. Does the filler designation tell me anything about the strength of the filler or the weld? I looked in AWS A5.10, the specification for aluminum GMAW and GTAW filler metals, and there are no strength requirements even in there. Why?...
- From The Fabricator
12 great gadgets and die components
- By Kate Bachman
- Nov 26, 2014
- Bending and Forming
- Article
Sometimes it’s the small items that make your workday easier. Standard die components with incremental improvements, such as roller cages with cylindrical rollers, and special gadgets, such as auto-indexing dimplers, can help smooth the stamping process and extend uptime.
- From The Welder
Aluminum Workshop: Weldability of aluminum mold plate
- By Frank Armao
- Nov 26, 2014
- Aluminum Welding
- Article
Q: I’m trying to weld some very thick aluminum mold plate. I don’t know what the alloy is. The plate thickness is about 12 in. I’m having lots of cracking problems. Can you tell me what the problem might be? A: In the way of background, most of the molds used for injection or blow molding...
- From The Welder
Aluminum Workshop: Common porosity problems (and how to fix them)
- By Frank Armao
- Nov 26, 2014
- Aluminum Welding
- Article
Q: I’m having a lot of problems with porosity in my aluminum welds. Can you tell me what’s causing it? A: As we’ve said before, all porosity in aluminum welds is caused by hydrogen, which is very soluble in molten aluminum but insoluble in solid aluminum. Generally, hydrogen comes from two...
- From The Fabricator
Upsizing in a downsizing economy
- By Professor R. Carlisle "Carl" Smith
- Nov 25, 2014
- Shop Management
- Article
Different shops have different ways of coping with and surviving business downturns. Some downsize, while others take advantage of opportunities and invest in people and equipment. Upsizing paid off for Wilson Works, Morgantown, W.V.
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The Fabricator is North America's leading magazine for the metal forming and fabricating industry. The magazine delivers the news, technical articles, and case histories that enable fabricators to do their jobs more efficiently. The Fabricator has served the industry since 1970.
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In this episode of The Fabricator Podcast, Caleb Chamberlain, co-founder and CEO of OSH Cut, discusses his company’s...
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