Indlela ephephile yokusebenzisa i-alamu yokuvuza kwe-crucible yesithando somlilo esincibilikisa insimbi

The crucible leakage alarm device of the insimbi ichitha isithando somlilo is necessary to ensure safe production, prevent the occurrence and expansion of furnace leakage accidents, help judge the use of the furnace lining, and prolong the furnace age. It is necessary to set up a crucible leakage alarm system. Generally, a direct current alarm device is used to install the stainless steel wire bottom electrode (first electrode) in contact with the molten iron and the stainless steel plate (mesh) side electrode (second electrode) between the induction coil of the furnace lining. Connect the electrode leads to the alarm device. When the molten metal leaks to the side electrode, the current rises to the set value, and the alarm device is activated. During the installation of the alarm device, it is necessary to check whether the connection between the lead wire and the electrode is good; whether the lead wire is grounded (resistance to ground> 5kC). During operation, sometimes the stainless steel wire melts at the bottom of the furnace. You can insert a conductive rod into the molten iron and use a multimeter to measure it. If the stainless steel wire is disconnected in the furnace lining, the alarm system will fail and it can only be laid when the furnace is rebuilt next time. After the alarm occurs, check whether it is a false alarm (false alarms mainly include: induced potential interference, lead wire grounding, and furnace lining wet). If the false alarm is eliminated, the furnace lining can be determined to be damaged.

Ulwelwesi olusha lwesithando somlilo esincibilikisa insimbi lusesigabeni sokuqala sokuncibilika kwehhavini yolwelwesi. Ngenxa yokukhangisa kwamanzi kanye nemvula yamanzi ekristalu ye-boric acid ebusweni bolwelwesi, ukumelana kolwelwesi kuncipha, futhi ukufundwa kwe-ammeter ye-alamu kuyenyuka. Uma iphezulu, inani le-alamu lingafinyelelwa, kodwa okwamanje ngokuvamile likhuphuka kancane kancane ngalesi sikhathi. Ngemuva kokuthi izithando zomlilo ezimbalwa zincibilike, zizokwehla kancane kancane futhi zibuyele ebangeni elijwayelekile, elingahlukaniswa ne-alamu yokuvuza evamile. Ngezinye izikhathi i-alamu, ebilokhu yehla phakathi nenkathi yokomisa, isiqale ukuphakama futhi. Ngalesi sikhathi, isithando somlilo sahlolisiswa futhi kwatholakala ukuthi ngenxa yokusebenza ngokunganaki, i-scaffolding yensimbi eyengeziwe yabangela izinga lokushisa eliphansi lokuncibilika kwensimbi encibilikisiwe likhuphuke kakhulu futhi lidlule izinga lokushisa le-sintering. (Ngaphezu kuka-1600°C), lonke ulayini lwesithando somlilo lufakwe emanzini cishe kuphela ungqimba oluqinile oluqinile futhi oluqinile, olungenayo isendlalelo esishintshayo kanye nongqimba oluxekethile, ngaleyo ndlela kubangele ingozi yokuvuza kwesithando somlilo. Ngalesi sikhathi, i-alamu yokuvuza kwesithando somlilo phakathi nohhavini ilungile. Isithando somlilo se-3t esimaphakathi esincibilikisa sisebenzisa enye idivayisi ye-alamu, idivayisi eyodwa yokutholwa kokuvuza. Idivayisi ihlanganisa imojuli yokuthola indawo ephansi exhunywe kugesi kanye nophenyo lokuvuza okuphansi olutholakala esithandweni somlilo. Uma i-alloy liquid ithinta ikhoyili, i-grounding probe yokuvuza izoholela i-coil current phansi, bese i-grounding probe module izoyibona bese iyinqamula. Ukunikezwa kwamandla okumisa ukuqhekeka kwe-arc yekhoyili nokuvimbela uketshezi lwe-alloy ukuba luthwale i-voltage ephezulu. Ithuluzi lokuhlola ukuvuza okubanjwe ngesandla elingaphansi lingasetshenziswa njalo futhi njalo ukuhlola ukuthi uhlelo lokuvuza okuvuza phansi kwesithando somlilo luqinile futhi luthembekile ukuze kuqinisekiswe ukuthi uphenyo lokuvuza komhlaba lusekelwe ngokuphelele, ukuze ukuphepha komsebenzisi kanye isithando somlilo siqinisekisiwe.