Pa mitundu yosiyanasiyana ya zinthu za carbon ndi graphite electrode, malinga ndi momwe zimagwiritsidwira ntchito zosiyanasiyana, pali zofunikira zapadera zogwiritsira ntchito ndi zizindikiro za khalidwe. Poganizira mtundu wa zipangizo zopangira zomwe ziyenera kugwiritsidwa ntchito pa chinthu china, choyamba tiyenera kuphunzira momwe tingakwaniritsire zofunikira zapaderazi ndi zizindikiro za khalidwe.
(1) Kusankha zipangizo zopangira ma electrode a graphite omwe amagwiritsidwa ntchito popanga zitsulo zamagetsi monga kupanga zitsulo za EAF.
Ma electrode a graphite oyendetsera magetsi omwe amagwiritsidwa ntchito popanga zitsulo zamagetsi monga EAF ayenera kukhala ndi mphamvu yabwino yoyendetsera magetsi, mphamvu yoyenera yamakina, kukana kuzimitsa ndi kutentha kwambiri, kukana dzimbiri komanso kusakhala ndi chinyezi chokwanira.
① Ma electrode a graphite apamwamba kwambiri amapangidwa kuchokera ku petroleum coke, pitch coke ndi zipangizo zina zopanda phulusa. Komabe, kupanga ma electrode a graphite kumafuna zida zambiri, kuyenda kwa nthawi yayitali komanso ukadaulo wovuta, ndipo mphamvu ya electrode ya graphite ya 1 t ndi 6000 ~ 7000 kW · H.
② Anthracite yapamwamba kwambiri kapena coke ya metallurgical imagwiritsidwa ntchito ngati zopangira popanga electrode ya kaboni. Kupanga electrode ya kaboni sikufuna zida zopangira graphitization, ndipo njira zina zopangira ndizofanana ndi kupanga electrode ya graphite. Kuyendetsa kwa electrode ya kaboni kumakhala koipa kwambiri kuposa kwa electrode ya graphite. Kukana kwa electrode ya kaboni nthawi zambiri kumakhala kokwera nthawi 2-3 kuposa kwa electrode ya graphite. Kuchuluka kwa phulusa kumasiyana malinga ndi mtundu wa zopangira, zomwe ndi pafupifupi 10%. Koma pambuyo poyeretsa mwapadera, kuchuluka kwa phulusa la anthracite kumatha kuchepetsedwa kufika pa 5%. Kuchuluka kwa phulusa la chinthucho kumatha kuchepetsedwa kufika pa 1.0% ngati chinthucho chawonjezeredwa graphit. Electrode ya kaboni ikhoza kugwiritsidwa ntchito posungunula chitsulo cha EAF ndi ferroalloy.
③ Pogwiritsa ntchito graphite yachilengedwe ngati zinthu zopangira, ma electrode achilengedwe a graphite adapangidwa. Graphite yachilengedwe ingagwiritsidwe ntchito pokhapokha itasankhidwa mosamala ndipo phulusa lake lachepa. Mphamvu ya electrode yachilengedwe ya graphite ndi pafupifupi kawiri kuposa ya electrode ya graphite. Koma mphamvu ya makina ndi yochepa, yosavuta kusweka ikagwiritsidwa ntchito. M'dera lomwe lili ndi graphite yambiri yachilengedwe, ma electrode achilengedwe a graphite amatha kupangidwa kuti apereke EAF yaying'ono kuti isungunule chitsulo chofanana cha EAF. Pogwiritsa ntchito graphite yachilengedwe popanga ma electrode oyendetsera magetsi, zida ndi ukadaulo zimakhala zosavuta kuthetsa ndikugwiritsa ntchito.
④ Graphite electrode imagwiritsidwa ntchito popanga ma electrode obwezerezedwanso (kapena ma electrode osweka a graphitized) kudzera mu kuphwanya ndi kupukuta zinyalala kapena zinyalala. Phulusa la chinthucho silili lalikulu (pafupifupi 1%), ndipo mphamvu yake yoyendetsera zinthu ndi yoipa kuposa ya electrode ya graphitized. Kukana kwake kuli pafupifupi nthawi 1.5 kuposa ya electrode ya graphitized, koma mphamvu yake yogwiritsira ntchito ndi yabwino kuposa ya electrode yachilengedwe ya graphite. Ngakhale kuti n'zosavuta kudziwa bwino ukadaulo ndi zida zopangira ma electrode obwezerezedwanso, gwero la zinthu zopangira graphitization ndi lochepa, kotero njira iyi si njira yopititsira patsogolo.
Nthawi yotumizira: Juni-11-2021