Posted by Stick welding on March 20, 2013 at 16:08:25 from (198.53.83.89):
In Reply to: Re: Peening welds posted by el6147 on March 20, 2013 at 12:08:10:
No, a sharp chipping hammer shouldn't be used for peening. A dull chipping hammer would be a better choice and the idea is not to beat the snot out of the weld. That will increase stress rather than reduce it. Peening is supposed to reduce shrinkage stress while the weld is cooling. They make low stress stamps that are a series of dots because on critical jobs using standard stamps to identify who did the welding can be stress risers and/or a starting point for a crack.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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