Metal removal
US-2015345029-A1 · Dec 3, 2015 · US
Systems and methods for vapor pressure leaching polycrystalline diamond cutter elements
US9156136B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9156136-B2 |
| Application number | US-201314073243-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 6, 2013 |
| Priority date | Nov 7, 2012 |
| Publication date | Oct 13, 2015 |
| Grant date | Oct 13, 2015 |
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Abstract
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A method is disclosed for leaching a polycrystalline diamond (PCD) cutter element. In an embodiment, the method includes suspending the PCD cutter element above a liquid acid bath. In addition, the method includes elevating the temperature of the liquid acid bath above ambient conditions to transition at least some of the liquid acid bath to acid vapors. Further, the method includes elevating the pressure of the acid vapors above ambient conditions. Still further, the method includes exposing the PCD cutter element to the acid vapors.
First claim
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What is claimed is: 1. A method for leaching a polycrystalline diamond (PCD) cutter element, the method comprising: (a) suspending the PCD cutter element above a liquid acid bath in a chamber; (b) elevating the temperature of the liquid acid bath above ambient conditions to transition at least some of the liquid acid bath to acid vapors; (c) cyclically pulsing the pressure of the acid vapors in the chamber after (b); (d) exposing the PCD cutter element to the acid vapors in…
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- What does patent US9156136B2 cover?
- A method is disclosed for leaching a polycrystalline diamond (PCD) cutter element. In an embodiment, the method includes suspending the PCD cutter element above a liquid acid bath. In addition, the method includes elevating the temperature of the liquid acid bath above ambient conditions to transition at least some of the liquid acid bath to acid vapors. Further, the method includes elevating t…
- Who is the assignee on this patent?
- Nat Oilwell Varco Lp
- What technology area does this patent fall under?
- Primary CPC classification C23F1/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).