Method and apparatus for forming or modifying cutting edges

Details Method and apparatus for forming or modifying cutting edges Method and apparatus for forming or modifying cutting edges

C - Chemistry, Metallurgy

23

C

204/167, 204/96.

C23C 14/48 (2006.01) C23C 14/02 (2006.01) C23C 14/22 (2006.01)

Patent

CA 1338053

A method and apparatus for forming or modifying the cutting edges of razor blades, which comprises subjecting a stack of razor blades to ion bombardment from two ion sources in a vacuum chamber. The ion sources are located on opposite sides of a plane which lies within the stack and parallel to the major surfaces of the blades and have the axes of their ion beams directed at the edges of the razor blades in the stack. The ion bombardment is effected with ions of sufficient mass and energy, in relation to the material of which the razor blades are formed, to cause sputter removal of the material of the blades on both sides of the edges thereof to thereby form their cutting edges. The apparatus includes a sealable vacuum chamber containing a workpiece holder and two ion sources for effecting the ion bombardment.

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