Graphite Electrode Nipple

DESCRIPTION

Graphite electrodes nipples are used to connect two or more electrodes into column. And the purpose of that is to realize continuous use of electrodes in electric arc furnace steelmaking process. Nipples, with conventional external threads surface, are the important clamping device to extend the electrode length. Doing this avoids the unproductive consumption in smelting.

As a technical manufacturer, we know that the mismatch between the graphite electrode body and the nipple will lead to the electrode breaking during use. This not only just is an unproductive consumption in smelting, but also increases the amount of carbon in the molten steel. For these reasons, all electrode nipples are produced by our factory, not purchased.

FEATURE

High bulk density, precision thread accuracy.
Check the tolerance of nipples one by one.
Bending strength limits are measured.
High machining accuracy, good surface finishing.
Outstanding resistance to breakage.
Original factory production, not outsourcing.

APPLICATION

Assembly diagram of graphite electrode nipple

Graphite electrodes with nipples

Graphite electrode for EAF smelting

SPECIFICATION

Table 1 Technical Specification of Graphite Electrode Nipple

Table 2: Dimensions of Nipple & Sockets (TPI 3)

* Pin pitch diameter d2 is equal to socket pitch diameter d4.
* Socket minor diameter d3 is equal to pitch diameter d4 minus 3.16 mm.
* Other combinations of nominal diameter and joint are to be agreed upon between the supplier and user.

Table 3: Dimensions of Nipple & Sockets (TPI 4)

* Pin pitch diameter d2 is equal to socket pitch diameter d4.
* Socket minor diameter d3 is equal to pitch diameter d4 minus 3.16 mm.
* Other combinations of nominal diameter and joint are to be agreed upon between the supplier and user.

Table 4: Standard Electrode Sizes & Nipple Weights

Table 5: Coupling Torque Reference for Nipple & Electrode

Below chart is the matching relationship between electric furnace capacity, transformer power load and electrode size.