Claims
- 1. A wear resistant diamond enhanced cutting tool formed by a process comprising:
- brazing an insert to a tool body with a braze alloy by heating the insert and tool body to a temperature at which the braze alloy melts;
- cooling the insert and tool body such that the braze alloy solidifies;
- quenching the insert and tool body such that a martensitic transformation takes place;
- tempering the insert and tool body; and
- brazing a diamond enhanced tip to the insert at a brazing temperature while maintaining a temperature of the tool body at a lower temperature, said lower temperature being below a temperature at which softening of the tool body would take place.
- 2. A wear resistant diamond enhanced cutting tool, comprising:
- a tool body;
- an insert brazed to the tool body with a braze alloy; and
- a diamond-enhanced tip brazed to the insert at a brazing temperature with a braze alloy, the tool body having a first hardness and a substantially martensitic structure before the diamond-enhanced tip is brazed to the insert and having a second hardness and a substantially martensitic structure after the diamond-enhanced tip is brazed to the insert, the second hardness being substantially the same as the first hardness.
- 3. The wear resistant diamond enhanced cutting tool according to claim 2, wherein the insert includes a carbide insert.
- 4. The wear resistant diamond enhanced cutting tool according to claim 2, further comprising a carbide ring brazed to the tool body.
- 5. The wear resistant diamond enhanced cutting tool according to claim 2, wherein the diamond enhanced tip includes a carbide tip with a diamond coating.
- 6. The wear resistant diamond enhanced cutting tool according to claim 2, wherein the insert includes a concave portion located between the diamond enhanced tip and the tool body.
- 7. The wear resistant diamond enhanced cutting tool according to claim 2, further comprising a ring attached to the insert.
- 8. A wear resistant diamond enhanced cutting tool, comprising:
- a tool body;
- an insert brazed to the tool body with a braze alloy; and
- a diamond-enhanced tip brazed to the insert at a braze temperature with a braze alloy, an entirety of the tool body having a substantially uniform hardness and a substantially martensitic structure.
- 9. The wear resistant diamond enhanced cutting tool according to claim 8, wherein the insert includes a concave portion.
- 10. The wear resistant diamond enhanced cutting tool according to claim 8, in wherein the insert is located between the diamond enhanced tip and the tool body.
- 11. The wear resistant diamond enhanced cutting tool according to claim 8, wherein the insert is received by a recess in the tool body.
- 12. The wear resistant diamond enhanced cutting tool according to claim 1, wherein the insert includes carbide.
- 13. The wear resistant diamond enhanced cutting tool according to claim 1, wherein the insert includes a cylindrical portion and a concave portion, the concave portion being adjacent to the cylindrical portion.
- 14. The wear resistant diamond enhanced cutting tool according to claim 1, wherein the tool body includes in a recess that receives the insert.
- 15. The wear resistant diamond enhance cutting tool according to claim 1, further comprising a ring attached to the insert.
- 16. The wear resistant diamond enhanced cutting tool according to claim 1, wherein the insert is located between the diamond enhanced tip and the tool body.
- 17. The wear resistant diamond enhanced cutting tool according to claim 1, wherein the diamond enhanced tip includes a diamond coating.
- 18. A wear resistant cutting tool, comprising:
- a tool body;
- an insert brazed to the tool body with a braze alloy; and
- a diamond-enhanced tip or a cubic boron nitride-enhanced tip brazed to the insert at a brazing temperature with a braze alloy, the tool body having a substantially martensitic structure before the tip is brazed to the insert and having a substantially martensitic structure after the tip is brazed to the insert.
- 19. The wear resistant cutting tool according to claim 18, wherein the diamond-enhanced tip is brazed to the insert.
- 20. The wear resistant cutting tool according to claim 18, wherein the tool body has a first hardness before the tip is brazed to the insert and a second hardness after the tip is brazed to the insert, the second hardness being substantially the same as the first hardness.
- 21. A wear resistant cutting tool, comprising:
- a tool body;
- an insert brazed to the tool body with a braze alloy; and
- a diamond-enhanced tip or a cubic boron nitride-enhanced tip brazed to the insert at a braze temperature with a braze alloy, an entirety of the tool body having a substantially martensitic structure after the tip is brazed to the insert.
- 22. The wear resistant cutting tool according to claim 21, wherein the tool body has a substantially uniform hardness after the tip is brazed to the insert.
- 23. The wear resistant cutting tool according to claim 21, wherein the diamond-enhanced tip is brazed to the insert.
Parent Case Info
This application is a continuation of application Ser. No. 08/593,465 filed Jan. 29, 1996, (now U.S. Pat. No. 5,837,071) which is a continuation-in-part of application Ser. No. 08/145,233 filed Nov. 3, 1993, (now abandoned) which is related to application Ser. No. 07/708,058, filed May 30, 1991 (now U.S. Pat. No. 5,161,859), a continuation of application Ser. No. 07/517,023, filed May 1, 1990 (now abandoned), which is a continuation of application Ser. No. 06/586,818, filed Mar. 6, 1984 (now U.S. Pat. No. 4,938,538).
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Continuations (1)
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593465 |
Jan 1996 |
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Continuation in Parts (1)
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145233 |
Nov 1993 |
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