ARMORED METAL FILE BAND AND PRODUCTION THEREOF

• US 3,774,355 A
• Filed: 10/15/1971
• Issued: 11/27/1973
• Est. Priority Date: 10/15/1971
• Status: Expired due to Term

• Current Assignee: Rule GRIT Incorporated
• Original Assignee: Chester H. Dawson, Philip R. Haskell, Robert T. Catlin
• Inventors: Dawson, Chester H., Catlin, Robert T., Haskell, Philip R.
• Primary Examiner(s): Simpson, Othell M.
• Application Number:
  US05/189,786
• Time in Patent Office: 774 Days
• Field of Search: 51/394-407,295,309,308
• US Class Current: 451/527
• CPC Class Codes: B23D 65/00 Making tools for sawing machines or sawing devices for use in cutting any kind of material
• CPC Class Codes: B24D 11/005 Making abrasive webs
• CPC Class Codes: B24D 18/00 Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
• CPC Class Codes: B24D 99/00 Subject matter not provided for in other groups of this subclass
• CPC Class Codes: B28D 1/06 with reciprocating saw-blades B28D1/10 takes precedence
• CPC Class Codes: B28D 1/127 Straight, i.e. flat, saw blades; strap saw blades

Abstract

File band stock and production thereof, comprising: a flexible base metal strip having over at least a surface portion thereof, a strong, tough and adherent, abrasive armoring coating produced in situ from abrasive particles of hard, high melting material selected from the group consisting of metal carbides, borides, nitrides, silicides and combinations thereof, and particles of a matrix metal, said matrix metal particles being in said armoring coating, fusion bonded to each other, to said base metal strip and to said abrasive particles, and partially embedding and anchoring said abrasive particles therein with said particles projecting therefrom in the form of a series of sharp cutting edges, said armoring coating being preferably applied to said base metal strip in spaced regularly recurring pattern areas longitudinally of said strip.

Claims

2. A file band according to claim 1 wherein said weldments are spaced apart for increasing flexibility And fatigue life thereof.

3. A file band according to claim 1 having unarmored opposite ends welded together to form said band into a continuous loop.

4. A file band according to claim 1 wherein said weldments of fused matrix metal comprise about one-fourth the weight of the abrasive particles partially embedded therein respectively for exposing sharp edges of said particles.

5. A file band according to claim 1 wherein the average grain size of said abrasive particles exceeds the average grain size of said brazing metal particles in ratios ranging from about 4:

1 to 12;

1.

6. A file band according to claim 5 wherein said abrasive particles have an average grain size of about 0.006 to 0.023 inch.