149 a:4:{s:8:"template";a:1:{s:27:"Work Instruction-print.html";b:1;}s:9:"timestamp";i:1369249101;s:7:"expires";i:1369252701;s:13:"cache_serials";a:0:{}}WI 2011 - Adjusting Pressure to Sleeve Diameter


Created Modified Rev. Changed by Change
08/09/05 08/16/07 3 Mathias Retyped equations



The sleeve should match the required outside dimension of the mold after it has been molded.  Using a pi-tape this dimension should be verified.  If the dimension is larger or smaller than the required dimension of the mold, an adjustment should be made.  For every 0.015 inch (fifteen thousandths), the pressure should be adjusted by one ton.  If the sleeve is larger than required, the pressure should be decreased.  If the sleeve is smaller than required the pressure should be increased.  The sleeve after adjustment should be re-verified and readjusted if necessary. 

 

( requiredOD - actualOD ) / 0.015 = Tons

  

Sample Calculation:

 

Required Outside Diameter    = 3.500 inches

Measure Outside Diameter     = 3.470 inches

 

 ( 3.500 - 3.470 ) / 0.015 = 2

  

The press should be increased in pressure by 2 ton, due to the fact that the sleeve size is small