Cov graphite electrode siv nyob rau hauv DC arc rauv tsis muaj qhov cuam tshuam ntawm daim tawv nqaij thaum lub sijhawm tam sim no dhau mus, thiab qhov tam sim no sib npaug ntawm qhov hla ntu tam sim no. Piv nrog rau AC arc rauv, qhov ceev tam sim no los ntawm electrode tuaj yeem tsim nyog nce ntxiv. Rau cov hluav taws xob hluav taws xob hluav taws xob muaj zog nrog tib lub zog nkag, DC arc rauv siv tsuas yog ib qho electrode, thiab txoj kab uas hla ntawm cov electrode loj dua, xws li 100t AC hluav taws xob rauv siv electrodes nrog txoj kab uas hla ntawm 600mm, thiab 100t DC arc furnaces siv. electrodes nrog ib txoj kab uas hla ntawm 700mm, thiab loj DC arc rauv txawm xav tau electrodes nrog ib txoj kab uas hla ntawm 750-800mm. Tam sim no cov load tseem tau txais ntau dua thiab siab dua, yog li cov hauv qab no yuav tsum tau muab tso rau pem hauv ntej rau qhov zoo ntawm graphite electrode:
(1) Tus nqi zoo ntawm lub cev electrode thiab qhov sib koom ua ke yuav tsum me dua, xws li qhov kev tiv thaiv ntawm lub cev electrode raug txo kom txog li 5.μΩ·m, thiab qhov sib koom ua ke yog txo kom txog li 4μΩ·m. Txhawm rau txo qhov kev tiv thaiv ntawm graphite electrode, ntxiv rau kev xaiv cov khoom siv zoo ntawm rab koob coke, qhov kub ntawm graphitization yuav tsum tau nce ntxiv.
(2) Lub linear expansion coefficient ntawm lub cev electrode thiab qhov sib koom ua ke yuav tsum qis, thiab axial thiab radial linear expansion coefficient ntawm lub electrode lub cev yuav tsum tswj kom muaj kev sib raug zoo nrog cov thermal expansion coefficient ntawm qhov sib koom ua ke raws li qhov loj ntawm qhov dhau tam sim no ceev.
(3) Lub thermal conductivity ntawm electrode yuav tsum siab. Lub siab thermal conductivity tuaj yeem ua rau lub tshav kub hloov mus rau hauv graphite electrode sai, thiab radial kub gradient txo, yog li txo cov thermal stress.
(4) muaj zog txhua yam txaus, xws li lub zog dabtsi yog khoov ntawm lub cev electrode mus txog 12MPa, thiab lub zog ntawm kev sib koom tes yog ntau dua li lub cev electrode, uas feem ntau yuav tsum yog li 1 npaug siab dua. Rau kev sib koom ua ke, lub zog tensile yuav tsum tau ntsuas, thiab qhov ntsuas torque yuav tsum tau siv tom qab kev sib txuas ntawm electrode, kom ob qhov kawg ntawm cov electrode tuav lub siab nruj.
(5) Lub porosity ntawm lub electrode yuav tsum tsawg kom txo tau oxidation noj ntawm electrode nto.
Post lub sij hawm: Mar-04-2024