Amintaccen hanyar amfani da na’urar ƙararrawa mai ƙyalli mai ƙyalli na tanderun narkewar ƙarfe

The crucible leakage alarm device of the ƙarfe mai yin sulɓi 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.

Sabon rufin ƙarfe na narkewar tanderun yana cikin matakin farko na narkewar tanda mai rufi. Saboda adsorption na ruwa da hazo na boric acid crystal ruwa a saman rufin, juriya na rufi yana raguwa, kuma karatun ammeter na ƙararrawa ya tashi. Lokacin da yake da girma, ana iya isa ƙimar ƙararrawa, amma halin yanzu gabaɗaya yana tashi a hankali a wannan lokacin. Bayan an narkar da ‘yan murhun wuta, sannu a hankali zai ragu kuma ya koma cikin kewayon al’ada, wanda za’a iya bambanta shi da ƙararrawar ƙararrawa gabaɗaya. Wani lokaci ƙararrawar ƙararrawa, wadda ta kasance a kan yanayin ƙasa yayin lokacin bushewa, ya fara tashi kuma. A wannan lokacin, an duba tanderun kuma an gano cewa saboda rashin kula da aikin da aka yi, ƙarar kayan ƙera ƙarfe ya sa ƙananan narkakken ƙarfe ya tashi da ƙarfi kuma ya zarce yanayin zafi. (Sama da 1600°C), gaba dayan labulen tanderun yana daɗaɗawa tare da kusan madaidaicin faifai mai tsauri mai ƙarfi, ba tare da jujjuyawar juyi da sako-sako ba, don haka yana haifar da haɗarin fashewar tanderu. A wannan lokacin, ƙararrawar yayyan tanderu a lokacin tanda daidai ne. Matsakaicin mitar mai narkewa na 3t yana amfani da wata na’urar ƙararrawa, ɗaya bayan ɗaya na’urar gano ɗigon ƙasa. Na’urar ta haɗa da na’urar gano ƙasa da aka haɗa da wutar lantarki da kuma binciken ɗigon ƙasa dake cikin tanderun. Idan ruwan alloy ɗin ya tuntuɓar nada, binciken ɗigon ƙasa zai jagoranci coil current zuwa ƙasa, kuma tsarin binciken ƙasa zai gano shi ya yanke shi. Samar da wutar lantarki don dakatar da rugujewar arc na nada da kuma hana ruwa mai ƙarfi daga ɗaukar babban ƙarfin lantarki. Za a iya amfani da na’urar gwajin ɗigon ƙasa da ke hannun hannu don bincika akai-akai ko tsarin binciken ɗigogin ƙasa na tanderun yana da inganci kuma abin dogaro ne don tabbatar da cewa binciken yaɗuwar ƙasa ya kasance ƙasa gaba ɗaya, ta yadda amincin ma’aikacin da tanderun da aka tabbatar.