graphite electrode HP350mm

graphite electrode HP350mm

3 month ago

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Hebei Shitu New Materials Technology Co., LTD

 3 month year

Product details

What measures can be taken to reduce the oxidation consumption of electrodes during electric arc furnace steelmaking?

The main reduction measures are as follows: (1) Reduce the oxidation consumption around the electrode, enhance the sealing of the furnace, and reduce the intrusion of air into the furnace; Minimize the exposure time of the red-hot electrode outside the furnace and standardize the oxygen blowing operation. (2) For smelting furnaces, if conditions permit, the electrode adopts spray cooling technology, which can effectively reduce the oxidation consumption on the side of the electrode. (3) Steel mills spraying anti-oxidation substances on the surface of electrodes or electrode manufacturers applying anti-oxidation impregnation treatment technology before the electrodes leave the factory can enhance the anti-oxidation performance of the electrode bodies.

02. What influence does the electrode phase sequence have on the use of electrodes?

The disengagement and breakage of the positive and negative electrodes during use in electric arc furnace steelmaking have a significant impact. If the electrode phase sequence is clockwise, the electrodes will become loose after being powered on for a period of time during use, which may easily lead to electrode loosening or joint breakage. The correct electrode phase sequence should be counterclockwise. In this way, the electrodes will connect more and more tightly during use.

03、Why is it required that the phase electrodes be in a parallel state and centered with the top hole of the furnace cover during electric arc furnace steelmaking?

The electrode column should be aligned with the top hole of the furnace cover. The electrode column should avoid friction with the furnace cover; otherwise, during lifting and lowering, the friction with the furnace cover may cause the furnace cover to break the electrode. For AC furnaces, the three-phase electrode columns should be kept as parallel as possible.

04. How to apply torque when the electrodes are screwed together?

When screwing the electrodes, the applied torque should be appropriate and the operation should be consistent. A torque that is too small may cause the joint to become loose due to heat, while a torque that is too large may cause the electrode joint hole to crack. Special electrode screwing tools should be used during screwing. Do not tighten or loosen it too much. If a gap is found in the end face contact after tightening, it must be withdrawn, cleaned thoroughly and then re-screwed.

05. Why is it said that graphite lifting gear is better than metal lifting gear?

Although metal lifting devices are durable and not prone to damage, when they are heated during use, the thermal expansion of the metal lifting devices can easily crack the electrode holes. At the same time, when connecting the metal lifting devices, the threads inside the electrode holes can be easily damaged, causing a large area of the threads inside the holes to fall off, which makes the electrodes very likely to come off. Graphite lifting devices, due to having the same thermal expansion performance and hardness as electrodes, will not have the above-mentioned poor usage situations. However, the service life of graphite lifting gear is short and it is prone to damage. If severe damage is found, it should be replaced in time.

06、Different power electric furnaces should use graphite electrodes of different powers. graphite electrodes are classified by grade into (regular power)RP graphite electrode,( 68336757,high power)HP graphite electrode, and (ultra high power)UHP graphite electrode.

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Hebei Shitu New Materials Technology Co., LTD

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3 month

Address: Handan, China

Main Product: graphite electrode, graphite power, carbon electrode, graphite scrap, graphitized petroleum coke , calcined petroleum coke

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