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Our new address: N169 W21010 Meadow Lane (P.O. Box 156)- Jackson, WI 53037
Effective July 7, 2011 Badger is moving to a larger 160,000 sq. ft. facility to more effectively service our growing customer base.

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compressive stress finish vs draw polish stress risers

Draw polish creates stress risers that
lead to heat checking and cracking

Draw polishing has been used for decades to help with the release of castings and to help the aluminum alloy to flow better over flat surfaces. What wasn't understood, however, was the effect the stoning (cutting edges) is having on the surface of the steel. The fact is, draw polishing acutely cuts stress risers into the casting surface of the steel.  These stress risers often lead to aiding the start of the most frustrating issue a die caster has with tool life...heat checking, cracking, and possible cavitation breakout in certain affected areas.

 

     


Draw Polish Stress Risers Shorten Die Casting Tooling Life


stoning marks on die finish


Draw polish marks create stress risers


migrate into cracks,
heat checks, and breakout
through the life of the tool

 

 

 

   

Some web pages were last modified 07/06/2011
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