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Blanchard Grinding

Last updated: July 10, 2019

What Does Blanchard Grinding Mean?

Blanchard grinding refers to a surface preparation technique used to efficiently remove stock from one side of a metallic object with a large surface area. It is often the first step in corrosion prevention treatment that is done on metallic surfaces prior to adding a coating, film or paint.

Blanchard grinding is also known as rotary surface grinding.

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Corrosionpedia Explains Blanchard Grinding

Blanchard grinding is used on ferrous objects that have a large surface area. Magnets or other holding devices are used to ensure stability during the grinding process.

Blanchard grinding is commonly used on the following large objects:

  • Castings and forgings
  • Sections of plate stock
  • Stampings
  • Molds and dies

The following are the average general tolerances for Blanchard ground steel plates:

  • Dimensions: ±0.002 inch
  • Parallelism: 0.0015 inch
  • Flatness: 0.0015 inch per foot
  • Surface finish: 125 rms
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Synonyms

Rotary Surface Grinding

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