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UHP electrode selection: Is it better to choose the largest size? How to match the transformer capacity?
For large electric arc furnaces, when selecting ultra-high-power (UHP) electrodes, bigger is not necessarily better. The electrode diameter must match the transformer capacity and furnace design. Blindly increasing the size not only fails to improve efficiency but may also increase thermal stress...Read more -
How to infer the areas of graphite electrode porosity from the surface of EDM workpieces？
It is feasible in principle to infer whether a graphite electrode contains “loose zones” by analyzing the workpiece surface after EDM, but this is an indirect inference and cannot directly confirm the condition through imaging as CT scanning does. The core logic is that local loosenes...Read more -
Graphite electrode “cross breakage”: Was it a quality issue or improper operation?
In EAF steelmaking, a “transverse fracture” of graphite electrodes cannot simply be attributed to a single cause; it usually requires judgment based on the fracture location and on-site operating conditions. It may be caused by an inherent quality problem of the electrode itself or by...Read more -
Behind the continuous rise in the price of graphite electrodes in 2026, is it driven by cost factors or a recovery in demand?
Cost-push is the main driver, while demand recovery is only a mild supporting factor. The price strength of graphite electrodes in 2026 is essentially a “passive price increase” forced by rising upstream raw material prices, rather than an “active price increase” driven by...Read more -
Can the “volume density” of graphite electrodes truly reflect their antioxidant and anti-corrosion capabilities in actual smelting processes?
It cannot truly reflect this. Bulk density is only a macroscopic “threshold” indicator, and it obscures the microstructural differences that determine oxidation resistance and erosion resistance. Two graphite electrodes with exactly the same bulk density may have vastly different cons...Read more -
Can the “volume density” of graphite electrodes truly reflect their antioxidant and anti-corrosion capabilities in actual smelting processes?
No. Bulk density is an important and necessary foundational indicator of a graphite electrode’s oxidation resistance and erosion resistance, but it cannot alone truly reflect the electrode’s overall performance in actual smelting. It is more like a “ticket for admission” —...Read more -
How the “streamlined microstructure” of needle-shaped carbon black determines the tolerance limit of graphite electrodes under high power conditions
The “streamline-like microstructure” of needle coke determines the tolerance limit of graphite electrodes under high power primarily because it directly counteracts the fatal thermal stress generated during high-power operation through an extremely low anisotropic coefficient of therm...Read more -
The coefficient of thermal expansion (CTE) in the practical application of graphite electrodes directly determines the electrode’s thermal shock resistance and is a core indicator for preventing cracking, chipping, or even fracture during rapid heating and cooling. It is not an isolated phy...Read more -
In the continuous casting process, how does the anti-oxidation coating technology for graphite electrodes effectively extend their service life?
In the continuous casting process, the anti-oxidation coating technology for graphite electrodes effectively extends their service life primarily through the dual mechanisms of “physical isolation” and “chemical transformation” to delay the oxidative loss of the electrodes...Read more -
For large-sized electrodes with a diameter of 700mm or more, what levels of tensile strength and elastic modulus should they reach in order to withstand extreme working conditions?
For large-size electrodes with a diameter of 700 mm or more, the indicators of flexural strength and elastic modulus need to be differentiated according to the electrode grade (regular power, high power, or ultra-high power) and the specific application scenario (such as large electric arc furnac...Read more -
As electric arc steelmaking continues to evolve towards larger scale and higher power, where are the main performance bottlenecks of electrode joints?
As electric arc furnace steelmaking develops toward larger scale and higher power, the performance bottleneck of electrode joints has evolved from a simple “insufficient strength” issue into a systemic engineering challenge. It is concentrated in coupled failures across four dimension...Read more -
How can the uneven degree of graphitization of graphite electrodes lead to local overheating and abnormal wear?
Uneven graphitization of graphite electrodes directly causes local overheating and abnormal consumption through several mechanisms. First, different degrees of graphitization lead to large differences in electrical resistivity. Well-graphitized regions have low resistivity, so current passes thro...Read more
