Turned, Ground, and Polished

Turned, Ground, and Polished (TGP) is a classification of finishing processes often used for metal shafting. Turning (on a lathe) creates straight round bars without the strain induced by cold drawing, while grinding and polishing improves the surface finish and roundness for high dimensional accuracy.[1][2] Extreme straightness is critical in high-speed applications to prevent vibration and reduce wear on bearings.[3]

See also

References
  1. "Archived copy" (PDF). Archived from the original (PDF) on 2012-12-24. Retrieved 2013-09-03.CS1 maint: archived copy as title (link)
  2. http://www.themetalstore.com/articles/Product_Guide/steel-bars.htm
  3. "Speedy Metals - Turned, Ground & Polished 1045 Steel Round".
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