February 25, 2011
By: Seijiro Oshima
In deep drawing, if the contact angle between drawing stages is too large, cracks can appear and swelling can occur, resulting in scoring, curving, and imbalanced flange-lip roundness. Keeping the contact angle between 15 and 45 degrees is key to quality drawn parts.
“I have never had a machine perform as well as the Prima Power Shear Genius. And when you take the reliability of the SG into consideration, there is no comparison.” Jeff Mooney, Altec Body Mfg.
From the Web: Finding a niche; faking a roar; falsifying welding certificates - by Vicki Bell
Web articles for fabricators—Meeting global competition by finding a niche; faking an engine’s roar; students sue over bogus welding certificates; bright future for girls in welding; and apprenticeships make a difference.
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