Grinding Processes

Castle undertakes the following grinding processes:

• Blanchard Grinding

  Blanchard Grinding, technically referred to as Rotary Surface Grinding, quickly removes stock from one side of a part: typically a part too large to be Double-Disc Ground.

• Centerless Grinding

  A type of grinding in which cylindrical parts are not held between centers but are supported on a work rest blade and rotated.

• Double-Disc Grinding

  Double Disc Grinding is the grinding of two surfaces at the same time in one machine. The two abrasive discs are opposed and the work pieces are fed between the discs to grind parallel surfaces simultaneously.

• Milling

  A machining operation that uses a multi-point horizontal or vertical cutter to remove metal from the surface of a work piece.

• Surface Grinding

  Surface Grinding is used to produce high-quality flat surfaces on work pieces. Peripheral surface grinders with horizontal spindles use the periphery of the grinding wheel to impart a flat surface to the work piece.

• OD Turning

  A metal removal process (outside the diameter) that alters a bar or tube’s size and finish.

• Turn & Polishing

  Turning:

  A method for removing the surface from a circular piece by bringing the cutting edge of a tool against it while the piece is rotated.
  

  Polishing:

  (1) Smoothing metal surfaces, often to a high luster, by rubbing the surface with a fine abrasive, usually contained in a cloth or other soft lap. Results in microscopic flow of some surface metal together with actual removal of a small amount of surface metal. (2) Removal of material by the action of abrasive grains carried to the work by a flexible support, generally either a wheel or a coated abrasive belt. (3) A mechanical, chemical, or electrolytic process or combination thereof used to prepare a smooth, reflective surface suitable for micro-structural examination that is free of artifacts or damage introduced during prior sectioning or grinding.