Rauv graphite rau EAF LF rauv

Rauv graphite rau EAF LF rauv

Dab tsi yog cov lus tseem ceeb rau graphite cov hluav taws xob siv hauv EAF thiab LF Furnaces?

Xaiv graphite electrodes rau EAF thiab LF kev ua haujlwm yuav tsum ua tib zoo saib rau txhua qhov chaw so kom haum:

​Tam sim no {- nqa muaj peev xwm (ampacity): EAFs, tshwj xeeb tshaj yog loj - Cov hluav taws xob uas muaj cov roj ntsha siab (piv txwv li cov hluav taws xob siab (UHP) Electrodes siab ntev rau 50-70 Ka) kom txhawb nqa arcs. LFS, kev ua haujlwm ntawm qis dua tab sis txuas ntxiv mus ntxiv (feem ntau 10-30 KA), xav tau cov hluav taws xob nrog kev coj ua kom muaj cua sov kom tsis muaj zog.

​Hluav taws xob tiv thaiv hluav taws xob: Cov qis qis tiv taus tsis zoo rau lub zog poob. EAF Electrodes ua ntej ua ntej muaj kev tiv thaiv tsis kam (piv txwv li,<55 μΩ·m for UHP grades) to maximize power transfer, while LF electrodes balance resistivity with thermal conductivity to ensure efficient Joule heating.

​Oxidation tsis kam: Ntev nthuav tawm cov cua sov cua (1,000-1,600 degree) accelerates oxidation. High - purity graphite (tshauv cov ntsiab lus<0.5%) with dense microstructures resists oxidation better, extending service life in both EAFs and LFs.

​Neeg Kho Tshuab Muaj Zog​: EAF electrodes endure dynamic stress from arc impingement, thermal expansion/contraction, and handling, requiring high flexural strength (>15 MPa) to prevent breakage. LFs, with gentler thermal cycles, still need sufficient tensile strength (>10 MPA) kom tsis txhob tawg thaum lub sijhawm nkag / tshem tawm.

​Particle loj thiab teeb tsa cov teeb meem​: Finer particle sizes (e.g., 15–25 mm for UHP) improve density and strength, while high graphitization (degree >90%) txhim kho kev coj ua thiab cua sov tsis kam - tseem ceeb rau ob qho eafs (arc stability) thiab LFS (kub nyiam).