Definition - 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.
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
- 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