Njia salama ya utumiaji wa kifaa cha kengele ya kuvuja ya tanuru ya kuyeyuka ya chuma

The crucible leakage alarm device of the chuma tanuru ya tanuru 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.

Uwekaji mpya wa tanuru ya kuyeyuka ya chuma iko katika hatua ya awali ya kuyeyuka kwa tanuru ya bitana. Kutokana na adsorption ya maji na mvua ya maji ya kioo ya asidi ya boroni kwenye uso wa bitana, upinzani wa bitana hupungua, na usomaji wa ammeter ya kengele huongezeka. Wakati iko juu, thamani ya kengele inaweza kufikiwa, lakini sasa kwa ujumla hupanda hatua kwa hatua kwa wakati huu. Baada ya tanuu chache kuyeyuka, itapungua polepole na kurudi kwenye safu ya kawaida, ambayo inaweza kutofautishwa na sasa ya kengele ya uvujaji wa jumla. Wakati mwingine sauti ya kengele, ambayo imekuwa katika mwelekeo wa kushuka wakati wa kukausha, imeanza kuongezeka tena. Kwa wakati huu, tanuru ilikaguliwa na iligunduliwa kuwa kwa sababu ya operesheni isiyojali, kiunzi kilichoongezwa cha nyenzo za chuma kilisababisha joto la chini la kuyeyuka la kuyeyuka kupanda kwa kasi na kuzidi joto la sintering. (Juu ya 1600 ° C), bitana nzima ya tanuru imechomwa kwa karibu tu safu kali ya vitrified na ngumu ya sintered, bila safu ya mpito na safu huru, hivyo kusababisha ajali ya kuvuja tanuru. Kwa wakati huu, kengele ya kuvuja tanuru wakati wa tanuri ni sahihi. Tanuru ya kuyeyusha ya masafa ya kati ya 3t hutumia kifaa kingine cha kengele, kifaa kimoja baada ya kingine cha kugundua uvujaji wa ardhi. Kifaa kinajumuisha moduli ya kugundua kutuliza iliyounganishwa na usambazaji wa nguvu na uchunguzi wa uvujaji wa kutuliza ulio kwenye tanuru. Ikiwa kioevu cha alloy kinawasiliana na coil, uchunguzi wa uvujaji wa kutuliza utaongoza sasa ya coil chini, na moduli ya uchunguzi wa kutuliza itaigundua na kuikata. Ugavi wa nguvu ili kuacha kuvunjika kwa arc ya coil na kuzuia kioevu cha alloy kutoka kubeba voltage ya juu. Kifaa cha kupima uvujaji wa ardhini kinachoshikiliwa kwa mkono kinaweza kutumika mara kwa mara na mara kwa mara kuangalia kama mfumo wa uchunguzi wa uvujaji wa ardhini wa tanuru ni mzima na unategemewa ili kuhakikisha kuwa uchunguzi wa uvujaji wa ardhi umesimamishwa kabisa, ili usalama wa opereta na tanuru ni uhakika.