METHOD AND APPARATUS FOR ACTIVATION OF AN ABRASIVE SLURRY BY AN ELECTRIC ARC

• US 3,855,441 A
• Filed: 04/08/1974
• Issued: 12/17/1974
• Est. Priority Date: 04/08/1974
• Status: Expired due to Term

• Current Assignee: Carl E. Kimmelmann
• Original Assignee: Carl E. Kimmelmann
• Inventors: Kimmelmann, Carl E.
• Primary Examiner(s): Truhe, J. V.
• Assistant Examiner(s): Herkamp, N. D.
• Application Number:
  US05/459,080
• Time in Patent Office: 253 Days
• Field of Search: 51/7,26,317 219/68,76
• US Class Current: 219/68
• CPC Class Codes: B23K 9/00 Arc welding or cutting electro-slag welding B23K25/00; welding transformers H01F; welding generators H02K

Abstract

The method of reducing the surface of a body by applying an abrasive slurry to the portion of the surface of the body to be reduced and forming successive electric arcs at the portion of the surface to be reduced, to drive the abrasive slurry away from the portion and allow it to return to the portion in the interval between the successive arcs. The apparatus for reducing the surface of a body wherein an abrasive slurry is maintained on the portion of the surface of the body to be reduced, and electric arcs are formed successively at the portion of the body to be reduced, whereby the slurry is driven away from the portion and returned and replenished between successive arcs.

Claims

1. A method for reDucing a surface of a workpiece comprising:

a. supplying a dielectric, abrasive slurry to a portion of a workpiece to be reduced;

b. generating successive electric arcs in the slurry to move it at the portion of the workpiece to be reduced;

c. reducing the surface of the workpiece by the movement of the abrasive slurry.

2. The method of claim 1 in which the electric arc is formed between an electrode and an electrically conductive workpiece.

3. The method of claim 1 in which the electric arc is formed between two electrodes immediately adjacent to the workpiece.

4. The method of claim 1 in which the slurry is oil and abrasive material.

5. The method of claim 1 in which the slurry is water and abrasive material.

6. The method of claim 1 in which the electric arcs are formed between the workpiece and electrode disposed in nonparallel relation to the workpiece surface.

7. The method of claim 1 in which the workpiece is rotated with respect to the electrode.

8. The method of claim 1 in which the workpiece is reciprocated with respect to the electrode.

9. The method of claim 1 in which the workpiece is reciprocated and rotated with respect to the electrode.

10. A method for reducing a surface of a workpiece comprising:

a. supplying a dielectric, abrasive slurry to a portion of a workpiece;

b. positioning an electrode in the slurry in spaced relation to the workpiece;

c. generating successive arcs in the abrasive slurry between the electrode and the workpiece.

11. An apparatus for reducing the surface of a workpiece comprising:

a. a means to hold a workpiece;

b. an electrode disposed angularly in spaced relation to the workpiece;

c. an abrasive slurry in the space between the electrode and the workpiece;

d. a means to generate successively electric arcs between the electrode and the workpiece, in the slurry.

12. An apparatus according to claim 11 and a means to reciprocate the workpiece.

13. An apparatus according to claim 11 and a means to rotate the workpiece.

14. An apparatus according to claim 11 and a means to adjust the space between the electrode and the workpiece.

15. An apparatus according to claim 11 and a means to reciprocate and rotate the workpiece.

16. An apparatus for reducing the surface of a workpiece comprising:

a. a means to hold a workpiece;

b. a pair of electrodes disposed in close proximity to the surface of the workpiece;

c. an abrasive slurry in the space between the electrodes and the workpiece;

d. means to generate successive electric arcs between the electrodes, in the slurry, adjacent to the workpiece.