Methods of leaching a superabrasive body and related apparatuses and systems

Patent metadata

Field	Value
Publication number	US-2022220629-A1
Application number	US-202217707569-A
Country	US
Kind code	A1
Filing date	Mar 29, 2022
Priority date	Jul 1, 2015
Publication date	Jul 14, 2022
Grant date	—

Abstract

Embodiments of the disclosure relate to methods of removing interstitial constituents from superabrasive bodies using an ionic transfer medium, and systems and apparatuses for the same.

First claim

What is claimed is:

1 . A method of processing a superabrasive element, the method comprising:
producing a leached volume in a superabrasive table of the superabrasive element, the superabrasive table comprising bonded superabrasive grains and at least one interstitial constituent, the producing the leached volume comprising:
coupling a first electrical connection to the superabrasive table;
coupling a second electrical connection to a processing solution;
generating a voltage between the first electrical connection and the second electrical connection; and
while generating the voltage:
exposing at least a portion of the superabrasive table to the processing solution; and
leaching at least a portion of the at least one interstitial constituent from only a portion of the superabrasive table.

2 . The method of claim 1 , further comprising leaching an external side region of the superabrasive table relatively more than a superabrasive face of the superabrasive table.

3 . The method of claim 2 , further comprising leaching the external side region of the superabrasive table, only a portion of the superabrasive face of the superabrasive table, and a chamfer extending between the external side region and the superabrasive face of the superabrasive table.

4 . The method of claim 2 , further comprising leaching the superabrasive face to a depth that is less than a depth that the external side region of the superabrasive table is leached.

5 . The method of claim 1 , further comprising leaching a superabrasive face and an external side region of the superabrasive table to produce the leached volume in the superabrasive table exhibiting a ring shape.

6 . The method of claim 5 , further comprising leaching a portion of the superabrasive face defining the ring shape to a depth that is less than a depth that a portion of the external side region defining the ring shape is leached.

7 . The method of claim 1 , further comprising defining a recess in the processing solution proximate a central portion of the superabrasive table.

8 . The method of claim 7 , further comprising selecting the processing solution to comprise an ionic transfer medium.

9 . The method of claim 8 , further comprising selecting the ionic transfer medium to comprise a solid or a gel.

10 . The method of claim 8 , further comprising selecting the ionic transfer medium to comprise an acidic solution.

11 . The method of claim 1 , further comprising generating the voltage between the first electrical connection and the second electrical connection via a positive potential applied at the first electrical connection and a negative potential applied at the second electrical connection.

12 . A superabrasive element produced by the method of claim 1 .

13 . A method of processing a superabrasive element, the method comprising:
producing a leached volume in a superabrasive table of the superabrasive element, the superabrasive table comprising bonded superabrasive grains and at least one interstitial constituent, the producing the leached volume comprising:
exposing at least a portion of the superabrasive table to an ionic transfer medium;
generating a voltage between the superabrasive table and the ionic transfer medium; and
while generating the voltage, leaching at least a portion of the at least one interstitial constituent from a portion of the superabrasive table.

14 . The method of claim 13 , further comprising:
coupling a first electrical connection to the superabrasive table; and coupling a second electrical connection to the ionic transfer medium.

15 . The method of claim 13 , further comprising leaching an external side region of the superabrasive table and only a portion of a superabrasive face of the superabrasive table.

16 . The method of claim 13 , further comprising leaving a portion of the superabrasive face of the superabrasive table substantially unleached.

17 . The method of claim 16 , further comprising separating the portion of the superabrasive face of the superabrasive table from the ionic transfer medium.

18 . A superabrasive element produced by the method of claim 13 .

19 . A method of processing a polycrystalline diamond element, the method comprising:
producing a leached volume in a polycrystalline diamond table of the polycrystalline diamond element, the polycrystalline diamond table comprising polycrystalline diamond and at least one interstitial constituent, the producing the leached volume comprising:
coupling a first electrical connection to the polycrystalline diamond table;
coupling a second electrical connection to a processing solution;
exposing at least a portion of the polycrystalline diamond table to the processing solution;
generating a voltage between the first electrical connection and the second electrical connection; and
while generating the voltage, leaching at least a portion of the at least one interstitial constituent from only a portion of the polycrystalline diamond table.

20 . A polycrystalline diamond element produced by the method of claim 19 .

Assignees

• Us Synthetic Corp

Inventors

• Heaton Daren Nathaniel

Classifications

• C25F1/00 Primary

  Electrolytic cleaning, degreasing, pickling or descaling · CPC title