Zeziphi iimfuno zomgangatho wegraphite electrode yeDC arc furnace?

I-electrode yegraphite esetyenziswe kwi-DC arc furnace ayinayo impembelelo yesikhumba xa i-current idlula, kwaye i-current isasazwa ngokulinganayo kwi-cross section yangoku. Xa kuthelekiswa ne-AC arc furnace, ukuxinana kwangoku nge-electrode kunokunyuswa ngokufanelekileyo. Kwiziko zombane ezinamandla aphezulu aphakamileyo anamandla afanayo, i-DC arc furnaces zisebenzisa i-electrode enye kuphela, kwaye idiameter ye-electrode inkulu, efana ne-100t AC electric furnaces zisebenzisa i-electrodes enobubanzi obuyi-600mm, kunye ne-100t DC arc furnaces zisebenzisa. i-electrodes enobubanzi obuyi-700mm, kunye nezixhobo ezinkulu ze-DC ze-arc zifuna i-electrode ezinobubanzi obuyi-750-800mm. Umthwalo wangoku nawo uya unyuka ngokunyuka, ngoko ke ezi mfuno zilandelayo zibekwe phambili kumgangatho we-electrode yegraphite:

(1) Isantya esilungileyo somzimba we-electrode kunye nelungu kufuneka libe lincinci, njenge-resistantivity yomzimba we-electrode iyancipha ukuya malunga ne-5.μΩ·m, kunye ne-resistiveivity ye-joint iyancipha ukuya malunga ne-4μΩ·m. Ukunciphisa ukuxhathisa kwe-electrode yegraphite, ukongeza ekukhetheni izixhobo ezikumgangatho ophezulu yenaliti ye-coke, ubushushu be-graphitization kufuneka bonyuswe ngokufanelekileyo.

(2) Umlinganiselo wokwandiswa komgca womzimba we-electrode kunye nomdibaniso kufuneka ube phantsi, kwaye i-axial kunye ne-radial linear yokwandisa i-coefficient yomzimba we-electrode kufuneka igcine ubudlelwane obufanelekileyo obulinganayo kunye nomlinganiso wokwandiswa kwe-thermal ohambelanayo ngokobukhulu ukuxinana kwangoku okudlulayo.

(3) I-thermal conductivity ye-electrode kufuneka ibe phezulu. I-conductivity ephezulu ye-thermal inokwenza ukuhanjiswa kobushushu kwi-electrode yegraphite ngokukhawuleza, kwaye i-radial yeqondo lokushisa liyancipha, ngaloo ndlela inciphisa uxinzelelo lwe-thermal.

(4) inamandla aneleyo omatshini, njengamandla okugoba omzimba we-electrode afikelela malunga ne-12MPa, kwaye amandla okudibanisa angaphezulu kakhulu kunomzimba we-electrode, ekufuneka ngokubanzi ube malunga namaxesha angama-1 ngaphezulu. Ukudibanisa, amandla okuqina kufuneka alinganiswe, kwaye i-torque elinganisiweyo kufuneka isetyenziswe emva kokudibanisa i-electrode, ukwenzela ukuba iziphelo ezimbini ze-electrode zigcine uxinzelelo oluthile oluqinileyo.

(5) I-porosity ye-electrode kufuneka ibe phantsi ukunciphisa ukusetyenziswa kwe-oxidation ye-electrode surface.