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Articles - Page 237
- 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.
- From The Fabricator
Make it better, keep it better with press monitoring
- By Jim Finnerty
- Nov 25, 2014
- Bending and Forming
- Article
Press monitoring systems improve overall equipment effectiveness (OEE) and help identify downtime culprits. Press controls track when the machine is running and when it is not. It counts machine cycles, and can detect both empty strokes and cycles when die protection or tonnage faults exist.
- From The Welder
Aluminum Workshop: Explaining the causes of black smoke
- By Frank Armao
- Nov 25, 2014
- Aluminum Welding
- Article
Q: I get a lot of black smoke on the surface of my aluminum welds. What is it, and how can I get rid of it? A: I can tell you what the black smoke isn’t. It is not soot and it doesn’t contain carbon, as most people think. It is, in fact, a mixture of very fine particles of aluminum oxide and...
- From The Welder
Aluminum Workshop: Arc blow in aluminum welding
- By Frank Armao
- Nov 25, 2014
- Aluminum Welding
- Article
Experiencing arc bowing during aluminum welds? Our experts explain what causes arc blow and what you can do to mitigate it when welding aluminum.
- From The Fabricator
Straightening AHSS
- By Jim Ward
- Nov 24, 2014
- Bending and Forming
- Article
Advancements in straighteners help stampers handle advanced high-strength steels on coil feed lines.
- From The Welder
Aluminum Workshop: Dissecting a die casting dilemma
- By Frank Armao
- Nov 24, 2014
- Aluminum Welding
- Article
Q: I weld a lot of aluminum castings. Most of the time they weld fine, but sometimes the weld blows out at me. What’s going on? A: The problem is caused by the casting process. There are three types of casting processes—sand casting, permanent mold casting, and die casting. The molds for sand...
- From The Welder
Aluminum Workshop: Meet tensile strength requirements with the right filler metal
- By Frank Armao
- Nov 24, 2014
- Aluminum Welding
- Article
Q: I am trying to conduct a procedure qualification test on 5083-0 temper material using 5356 filler metal and gas metal arc welding (GMAW). I have welded a number of test plates, but the tensile samples always fail at a tensile strength of 37 to 39 KSI. The code requires a minimum tensile strength...
- From The Welder
Consumables Corner: Understanding heat input and its limitations
- By Nino Mascalco, Rob Koltz, and Steve Sigler
- Nov 21, 2014
- Consumables
- Article
Q: We manufacture structures for the utility industry and primarily weld A36, A572-Gr. 50 and A871-Gr. 65. Recently we converted some of our welding processes to higher-deposition submerged-arc welding (SAW) but are concerned about the amount of heat we are adding from welding. What is the...
- From The Welder
Arc Welding 101: Those dang CVN requirements
- By Paul Cameron
- Nov 21, 2014
- Arc Welding
- Article
Q: Table 4.6 of AWS D1.1: 2010 is a list of supplementary essential variable changes that would require weld procedure specification (WPS) requalification due to Charpy V-notch (CVN) testing requirements. Under base metal (item 2) it indicates: Minimum thickness qualified is T or 5/8 inch...
- From The Welder
Aluminum Workshop: Determining contact tip size
- By Frank Armao
- Nov 21, 2014
- Aluminum Welding
- Article
Q: What is the right contact tip size for using 0.0468-in. filler wire to gas metal arc weld aluminum alloys? Some people use a tip that is one size larger (for example, a 0.0625-in. tip on 0.0468-in. wire), while others use the size the manufacturer specifies for 0.0468-in. wire. Still others use...
- From The Welder
Aluminum Workshop: Aluminum MIG welding fumes
- By Frank Armao
- Nov 21, 2014
- Aluminum Welding
- Article
Is welding aluminum toxic? Find out if the welding fumes in aluminum MIG are dangerous and if there are other issues with fumes to be aware of.
- From The Welder
The case for consumables
- By Ross Fleischmann
- Nov 21, 2014
- Consumables
- Article
New-generation GMAW consumables reduce the number of components, eliminate threads in the electrical path, and feature gas ported contact tips that run cooler and can accommodate more wire in a single tip.
- From The Welder
Aluminum Workshop: Are push or pull MIG welding guns necessary?
- By Frank Armao
- Nov 21, 2014
- Aluminum Welding
- Article
Are push-pull guns for aluminum welding necessary? Find out if you need a push-pull mig gun or if a standard gun with a Teflon® liner and contact tips will work.
- From The Welder
Aluminum Workshop: Backing bar weld for large-diameter pipe
- By Frank Armao
- Nov 20, 2014
- Aluminum Welding
- Article
Learn how to perform a backing bar weld for large-diameter pipe, a type of application commonly that commonly uses copper or stainless steel backing.
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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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