IP Library › Granted Patent US 10,237,928
Granted Patent B2
US 10,237,928 · App. 12/062,005 · Granted Mar 19, 2019

Long length electrodes

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 10,237,928
App. No.
12/062,005
Filed
Apr 3, 2008
Granted
Mar 19, 2019
Kind
B2
Art Unit
3761
USPC
373/88
Abstract

An embodiment disclosed herein includes a monolithic graphite electrode. The electrode has a main body having a length of more than 3050 mm. Another embodiment disclosed herein includes an electrode column comprising a plurality of monolithic graphite electrodes. The column has a length of more than 3050 mm of electrode per joint. A further embodiment discussed herein is the practice of increasing the length of the electrode to minimize the occurrence of an electrode joint in the electrode column for a given length. This practice will improve efficiencies for both electrode manufacturers as well as electric arc furnace operators.

Claims (11)

1. An electrode comprising a monolithic cylindrical main body having a first end and a second end and comprised substantially of a baked and graphitized extruded green stock, the first end includes a generally planar end face having a recessed threaded socket and the second end includes an axially extending threaded tapered tang, wherein a length of the electrode comprises more than 3050 mm.

2. The electrode of claim 1 wherein the length comprises more than about 3430 mm.

3. The electrode of claim 1 wherein the length comprises at least about 3680 mm.

4. The electrode of the claim 1 wherein a threads per inch of the tang comprises less than four (4) and a TPI of the socket comprises less than four (4).

5. The electrode of claim 1 wherein a taper of the tang comprises nine (9°) degrees or greater.

6. The electrode of claim 1 wherein a diameter of the main body comprises no more than about 860 mm.

7. The electrode of claim 1 wherein the electrode is a pinless joint electrode.

8. The electrode of claim 1 wherein the threaded socket and the threaded tapered tang have a similar thread pitch.

9. The electrode of claim 1 wherein the threaded socket and the threaded tapered tang have different thread pitches.

10. The electrode of claim 1 wherein the green stock has a diameter of less than 850 mm.

11. The electrode of claim 1 wherein the body has a length of 3050 mm to 3800 mm.