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Indlela ekhuselekileyo yokusetyenziswa kwesixhobo se-alarm yokuvuza ye-crucible ye-metal melting furnace

Indlela ekhuselekileyo yokusetyenziswa kwesixhobo se-alarm yokuvuza ye-crucible ye-metal melting furnace

The crucible leakage alarm device of the isithanthi somlilo esincibilikiweyo 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.

Uluhlu olutsha lwesithando somlilo sesinyithi sikwinqanaba lokuqala lokunyibilika kwe-oven ye-lining. Ngenxa ye-adsorption yamanzi kunye nemvula ye-boric acid crystal yamanzi ebusweni bomgca, ukuchasana kwe-lining kunciphisa, kwaye ukufundwa kwe-ammeter ye-alarm kuphakama. Xa iphezulu, ixabiso le-alarm linokufikelelwa, kodwa ngoku ngokubanzi likhuphuka ngokuthe ngcembe ngeli xesha. Emva kokuba ii-furnaces ezimbalwa ziyancibilika, ziya kuncipha ngokuthe ngcembe kwaye zibuyele kuluhlu oluqhelekileyo, olunokuthi luhluke kwi-alamu yokuvuza ngokubanzi. Ngamanye amaxesha i-alarm current, ebisoloko ihla ngexesha lokumisa, iqalise ukunyuka kwakhona. Ngeli xesha, isithando somlilo sahlolwa kwaye kwafunyaniswa ukuba ngenxa yokusebenza ngokungakhathali, i-scaffolding yentsimbi eyongeziweyo yabangela ukuba ubushushu obuphantsi obunyibilikayo bentsimbi bunyuke ngokukhawuleza kwaye budlule ubushushu be-sintering. (Ngaphezu kwe-1600 ° C), yonke i-furnace lining ifakwe i-sintered phantse kuphela i-vitrified enzima kunye ne-hard sintered layer, ngaphandle kwe-transition layer kunye ne-loose layer, ngaloo ndlela ibangela ingozi yokuvuza kwesithando somlilo. Ngeli xesha, i-alamu yokuvuza kwesithando somlilo ngexesha le-oven ichanekile. I-3t intermediate intermediate smelting furnace isebenzisa esinye isixhobo se-alam, esinye ngesinye isixhobo sokubona ukuvuza. Isixhobo sibandakanya imodyuli yokufumanisa umhlaba oxhunywe kumandla ombane kunye neprobe yokuvuza komhlaba efumaneka kwisithando somlilo. Ukuba i-alloy liquid idibanisa i-coil, i-probe yokuvuza komhlaba iya kukhokelela i-coil yangoku emhlabeni, kwaye imodyuli ye-grounding probe iya kuyibona kwaye iyinqumle. Ukunikezelwa kwamandla ukumisa ukuphuka kwe-arc yekhoyili kunye nokuthintela ulwelo lwe-alloy ekuthwaleni i-voltage ephezulu. Isixhobo esibanjwa ngesandla sokuvavanya ukuvuza okuvuzayo sinokusetyenziswa rhoqo kwaye rhoqo ukujonga ukuba inkqubo yokuvuza komhlaba yesithando somlilo ikhuselekile kwaye ithembekile ukuqinisekisa ukuba iprobe yokuvuza komhlaba isekelwe ngokupheleleyo, ukuze ukhuseleko lomsebenzisi kunye iziko liqinisekisiwe.