rp high density graphite electrode

Pubdate: 08-13 2021

Summary of common problems of rp high density graphite electrode in electric furnace steelmaking

rp high density graphite electrode

1. Why is graphite sling better than metal sling? Although the metal sling is durable and not easily damaged, the thermal expansion of the metal sling will easily crack the hole of the rp high density graphite electrode after being heated during use. At the same time, when the metal sling is connected, the thread in the pole hole is easily damaged, causing a large area of the thread in the hole to be scraped off, and it is easy to trip. Since the graphite sling has the same thermal expansion performance and hardness as the rp high density graphite electrode, the above-mentioned bad use will not occur, but the graphite sling has a short service life and is easily damaged. If serious damage is found, it should be replaced in time.

2. How to choose rp high density graphite electrode correctly in electric arc furnace steelmaking? According to the design characteristics of the electric arc furnace, a reasonable choice of rp high density graphite electrode suitable for electric arc furnace production, and the best cost-effective product. It is very necessary to carefully choose the rp high density graphite electrode suitable for each furnace. The special performance of the steelmaking furnace, the feeding method, the maximum current intensity, the length of the rp high density graphite electrode under the clamp, the distance between the side wall of the furnace and the circumference of the rp high density graphite electrode, etc. are all selected for the electric arc furnace rp high density graphite Factors that must be considered when using the electrode.

3. What effect does resistance have on the use of rp high density graphite electrode in steelmaking? The resistivity of the rp high density graphite electrode is a physical index reflecting the conductivity of the rp high density graphite electrode, and is related to the manufacturing process of the rp high density graphite electrode. The country has qualitative regulations on the resistivity of different specifications of rp high density graphite electrode. Generally speaking, when steel mills choose a certain specification of rp high density graphite electrode, they must choose a resistivity within the range specified by the national metallurgical standard. If the resistivity is too high, the rp high density graphite electrode will be charged and heated, which will increase the oxidation consumption of the rp high density graphite electrode.

4. What effect does the volume density characteristic have on the use of rp high density graphite electrode in steelmaking? The volume density of the rp high density graphite electrode reflects the dense state of the rp high density graphite electrode, and is closely related to the manufacturing process of the rp high density graphite electrode. The volume density of rp high density graphite electrode of different specifications and varieties is regulated by the state. Products with low bulk density indicate that the overall structure of the product has a high porosity, and the oxidation rate of the product is fast at high temperatures, which easily leads to an increase in the consumption of the rp high density graphite electrode. Generally speaking, when steel mills choose rp high density graphite electrode, the volume density of rp high density graphite electrode is greater than the specified value, but the higher the volume density, the better. Because some rp high density graphite electrodes with high bulk density sometimes have poor thermal shock resistance, they are prone to surface peeling, shedding and cracks during the steelmaking process, which affects steelmaking.

5. When using rp high density graphite electrode, why should we prevent the mixing of many products? The rp high density graphite electrode used in steel plants is usually provided by many manufacturers. When many products are mixed in the steelmaking process, not only is it difficult for the steel mill to count the consumption of a single product, but also because of the different raw materials and manufacturing processes used by different manufacturers, the physical and chemical properties and processing tolerances of the rp high density graphite electrode and joints of different manufacturers are different .

Therefore, the matching tolerances generated during the mixing process easily cause the rp high density graphite electrode to fall off and disconnect. The correct way to use it is to use one manufacturer’s product alone, and then connect to another manufacturer’s product after the end. It is necessary to reduce the number of replacements of rp high density graphite electrodes from different manufacturers, and poles from the same manufacturer should use matching connectors from the same manufacturer to prevent mixing.


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