Metòd itilize san danje nan aparèy alam flit kreze nan gwo founo fonn metal

The crucible leakage alarm device of the fonn metal fonn 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.

Nouvo pawa nan fou a fonn metal se nan etap nan byen bonè nan k ap fonn nan fou a pawa. Akòz adsorption nan dlo ak presipitasyon nan dlo kristal asid borik sou sifas la nan pawa a, rezistans nan pawa a diminye, ak lekti nan ammèt alam la leve. Lè li wo, yo ka rive jwenn valè alam la, men aktyèl la jeneralman monte piti piti nan moman sa a. Apre kèk founo yo fonn, li pral piti piti diminye epi retounen nan seri nòmal la, ki ka distenge ak kouran alam jeneral la. Pafwa alam aktyèl la, ki te sou yon tandans anba pandan peryòd siye a, te kòmanse monte ankò. Nan moman sa a, yo te enspekte gwo founo dife a epi li te jwenn ke akòz operasyon neglijans, te ajoute echafodaj materyèl fè a te lakòz pi ba tanperati a fonn fè fonn monte sevè ak depase tanperati a SINTERING. (Pi wo pase 1600 ° C), pawa a tout antye de founo se sintered ak prèske sèlman yon kouch grav vitrifye ak difisil, san yon kouch tranzisyon ak kouch ki lach, konsa sa ki lakòz yon aksidan fwit founo. Nan moman sa a, alam la fuite founo pandan fou a kòrèk. 3t entèmedyè frekans fusion founo a sèvi ak yon lòt aparèy alam, youn pa youn aparèy deteksyon flit tè. Aparèy la gen ladan yon modil deteksyon tè ki konekte ak ekipman pou pouvwa a ak yon pwofonde flit tè ki sitiye nan gwo fou a. Si likid alyaj la kontakte bobin la, sond la flit tè a pral mennen aktyèl la bobin nan tè a, ak modil la sond tè a pral detekte li epi koupe li. Ekipman pouvwa pou sispann dekonpozisyon arc bobin la epi anpeche likid alyaj la pote vòltaj segondè. Aparèy tès flit tè ki kenbe men yo ka itilize pou tcheke souvan ak regilyèman si sistèm pwofonde leakage tè a nan gwo founo dife a entak ak serye pou asire ke pwofonde flit tè a konplètman chita, se konsa ke sekirite operatè a ak la. founo se garanti.