Questions and Answers
Apr 13, 2006, Dave BartonQ. Our new project involves welding a 2.5-in. thick piece of AR400 steel to a 2-in. thick piece of mild steel using a 0.5-in. fillet weld, 32 in. long....
Understanding Bend Tests
Mar 21, 2006, Omer W. BlodgettFigure 1: In a bend test, a flat strap of metal is bent into a U-shape, stretching the material on the outer surface of the "U," while compressing the...
Speedy finishing tool
Mar 21, 2006Dynabrade Inc.(www.dynabrade.com) has introduced an electric finishing tool for producing line-scratch finishes on stainless steel and other materials....
Welding Specialists curb corrosion
Mar 21, 2006, Richard HarrisTy Roberts, plant manager: Traceability is key to our success. Welders use a backing rim on the bottom of a Type 304 stainless steel cylinder to maintain...
MISTRAS Holdings Group acquires Code Services
Mar 21, 2006The capabilities at eMachineShop have been expanded. MISTRAS Holdings Group, a provider of non-destructive testing services based in Princeton Junction,...
One man's trash is another's treasure
Mar 21, 2006By Larry Haftl, special to WDF Used robots could have a lot of productive life left in them. There are many used robots available on the market. Paint...
Barton's Q & A
Mar 21, 2006, Dave BartonThis column is sponsored by Penton and the Lincoln Electric Co., Cleveland. Dave Barton is a senior welding engineer in the Application Engineering Group...
New twists on roll bending
Mar 21, 2006, Richard MandelBy Richard Mandel, senior editor A shopworker assays a metal plate as it runs through a roll bender. Diagram showing contact points when rolling a cone...
Helping people who have to make a living
Feb 17, 2006, Richard HarrisRoy Lanier instructs Michael Howard as he sets up an oxyfuel cutting torch. At Pitt Community College, Greenville, N.C., welding students start with the...
Barton's Q&A
Feb 17, 2006, Dave BartonQ: I am making a replacement fire place grate of 0.75-inch thick mild steel. My problem-is that the grate keeps burning up. I am trying to determine which...
Voice command system turns machines on
Feb 17, 2006Frank Maleno at Heat-Fab uses voice commands to control a spot welder. Necessity, we often hear, is the mother of invention. If that is true, then resourcefulness...
Larger welds don't always make stronger connections
Feb 17, 2006, Omer W. BlodgettFigures 1 and 2: The initial design specified a 1-in. fillet weld to join the shaft to the gear. Figure 3: A combination partial joint penetration groove...
An elegant solution
Feb 17, 2006, Kimberley GillesFigure 1. Conventional welding sinusoidal wave with 50 percent positive and 50 percent negative polarities. Figure 2. Conventional square wave with 50...
Sawing the moody metal
Feb 10, 2006A carbide-tipped blade with triple-set tooth design provides good swarf clearance for long tool life. by Paul Duffy, Babco Milford Bandsaws Edited by...
No heat, No burrs, only fast fit-up ready cutting
Jan 27, 2006, Richard HarrisBob Gardner cuts through 0.188-inch thick aluminum to shorten a truck bed. A soft-grip side handle increases control for cutting a 40-degree bevel on...
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