Hauv qab no yog ib qho kev qhia txog threading thiab alloy casting.
(1) Lub sijhawm rho nyiaj. Raws li cov txheej txheem smelting txuas ntxiv, ntau thiab ntau cov hlau molten accumulates hauv qhov cub. Ib tug loj npaum li cas ntawm molten hlau nrog muaj zog conductivity accumulates nyob rau hauv lub cub tawg, uas ua rau lub electrode nce thiab ua rau nws nyuaj rau kev khiav hauj lwm. Yog li ntawd, txhawm rau kom ntseeg tau tias cov txheej txheem smelting ib txwm muaj, nws yog ib qho tsim nyog yuav tsum qhib lub qhov dej ntws ntawm cov hlau tsis tu ncua thiab tso tawm ntau cov hlau molten hauv lub cub tawg kom raws sijhawm. Lub sijhawm luv kais thiab lub sijhawm tshem tawm ntev dua yooj yim rau kev ntxig electrode. Txawm li cas los xij, lub sij hawm thim rov qab ntev dua ua rau muaj cua sov ntau dua thiab poob casting. Yog li ntawd, lub sijhawm hloov pauv tsim nyog yuav tsum tau txiav txim siab raws li qhov muaj peev xwm ntawm lub cub tawg thiab qib cua sov. Feem ntau, qhov qis dua cov ntsiab lus ntawm silicon ntawm ferrosilicon, nws yuav siv sij hawm ntev dua. Piv txwv li, thaum smelting 75% ferrosilicon nyob rau hauv lub cub hluav taws xob nrog lub peev xwm ntawm 10000 ~ 30000 kVA, 4 ~ 5 rauv yog tapped hauv 8 teev. Thaum smelting 75% ferrosilicon nyob rau hauv lub cub hluav taws xob ntawm 180 () ~ 9000 kVA-A, 3 ~ 4 lub cub tawg tau mloog hauv 8 teev.
(2) Kev npaj ua ntej tapping. Ua ntej tapping, nws yog ib qho tsim nyog los npaj tag nrho cov cuab yeej rau qhib thiab kaw lub qhov muag ntawm lub qhov cub, nrog rau xyuas lub ladle kom ua raws li qhov yuav tsum tau ua. Npaj cov khoom rau cov cement slurry. Cov ntaub ntawv kaw feem ntau yog coke hmoov (electrode paste), dej thiab me me ntawm graphite hmoov sib xyaw rau hauv cov pob conical ntawm sludge uas tuaj yeem koom ua ke. Cov pob av yog qhov tsim nyog loj.
(3) Plug qhov threaded qhov. Raws li qhov tshwm sim ntawm leaching ntawm high-temperature molten hlau, oxidation thiab ablation ntawm huab cua, threaded qhov yog heev yooj yim rau kev puas tsuaj. Kev xyaum qhia tau hais tias lub neej kev pab cuam ntawm lub qhov threaded feem ntau txiav txim siab lub neej kev pab cuam ntawm lub cub tawg lub cev. Txhawm rau kom ntev lub neej ntawm lub tshuab ua kom sov lub cev, nws yog ib qho tsim nyog yuav tsum siv thiab tswj lub qhov threaded kom raug.
Thaum threading, round steel yuav tsum tau siv los tshem tawm cov seem nyob ze ntawm lub qhov, tuav tawm cov av nyob ib ncig ntawm lub qhov muag ntawm lub qhov cub, ntxuav lub threading trough, thiab ces qhib lub qhov muag rau qhov cub nrog round steel nyob rau hauv lub Upper kawg ntawm lub qhov muag qhov muag centerline. Yog hais tias lub qhov cub qhov muag yog qhov nyuaj rau qhib, nws tuaj yeem qhib nrog lub qhov cub. Yog tias nws tsis tuaj yeem qhib qhov muag, nws tuaj yeem qhib nrog oxygen. Thaum qhib lub qhov muag rau qhov cub tshiab, cov pa oxygen tuaj yeem siv los qhib lub qhov muag ntawm lub qhov cub. Thaum siv cov hlau puag ncig lossis lub tshuab hluav taws xob los cuam tshuam lub qhov muag ntawm lub qhov cub, nws yog nruj me ntsis txwv tsis pub tamper los yog hlawv indiscriminately, tshwj xeeb tshaj yog tamper los yog hlawv randomly hauv qab kab hauv nruab nrab ntawm lub qhov cub qhov muag, txwv tsis pub nws yuav ua rau lub qhov cub qhov muag, rhuav tshem cov duab. ntawm qhov cub qhov muag, uas yog me me sab hauv thiab loj sab nraud, uas yuav ua rau nws nyuaj rau txhaws qhov muag.
(4) Hlau tapping thiab slag tshem tawm. Thaum lub sij hawm cov txheej txheem hlau tapping, lub qhov muag ntawm lub qhov cub yuav cia li nthuav dav vim qhov kev yaig ntawm cov hlau molten. Yog li ntawd, thaum lub qhov muag ntawm lub cub tawg tsuas yog qhib, tshwj xeeb tshaj yog thaum lub qhov cub tshiab tsuas yog qhib, lub qhov muag ntawm lub qhov cub yuav tsum tsis txhob qhib ntau dhau, txwv tsis pub cov dej ntws yuav loj heev, cov slag yuav nyuaj rau tshem tawm, thiab cov hlau ladle. tuaj yeem yooj yim puas. Yog hais tias qhov kub ntawm cov hlau molten yog highjuice, thiab cov dej ntws siab dhau lawm, lub zog yuav tsum raug txo, thiab lub qhov cub qhov muag yuav tsum qhib me me. Feem ntau, thaum molten hlau npog hauv qab ntawm lub ladle lossis nce mus txog 1/3 ntawm lub ladle, lub qhov muag ntawm lub qhov cub yog maj mam loj los ntawm cov hlau puag ncig.
Thaum lub qhov muag ntawm lub qhov cub qhib, lub electrode yuav tsum tau maj mam, nyob ntawm seb lub outflow ntawm molten hlau thiab lub load. Cov electrode ntawm lub qhov hluav taws xob lub qhov ncauj yuav tsum nyob twj ywm li qhov ua tau thaum ntxov ntawm kev tshem tawm npua hlau, thiab nyob rau theem tom qab nws tuaj yeem maj mam tso. Thaum cov hlau molten ntws tawm, yog tias qhov ntws siab dhau lawm, nws tuaj yeem kaw nrog cov hlau puag ncig nrog lub taub hau rake; Yog tias qhov siab ntws qis dhau lawm, siv cov hlau puag ncig txhawm rau txhawm rau qhov muag qhov muag. Rau qhov cub loj, siv lub ladle. Thaum tapping cam khwb cia hlau, txhawm rau tiv thaiv kom tsis txhob ntog los ntawm kev sib zog, nws yog ib qho tsim nyog yuav tsum tau ntxiv cov hmoov coke kom muaj cua sov.
Thaum lub sij hawm txheej txheej txheej, ntau slag yuav tsum tau muab tshem tawm. Tus nqi ntawm slag nyob rau hauv lub cub tawg ferrosilicon tuaj yeem ncav cuag 2-4% ntawm qhov hnyav alloy. Thaum lub cub tawg zoo, nws cov tuab yog li 300 hli nrog hlau. Tom qab lub qhov muag ntawm lub qhov cub qub yog clogged nyob rau hauv ib tug lig theem, qhov tshaj ntawm lub qhov ncauj sab nraud yog hais txog 200 mm.
Lub sealing ntawm lub qhov muag tshem tawm qhov poob ntawm lub qhov cub hauv ob sab phlu thiab lub taub hau zoo thaum txiav. Tsis tas li ntawd, kev saib xyuas yuav tsum tau them rau kev kho cov dej ntws channel. Lub ladle nyob rau hauv uas cov hlau molten khaws cia yog ua los ntawm av nkos cib thiab coated nrog av nkos tov nrog refractory av nplaum thiab coke hmoov los pab txhawb kev tshem tawm ntawm slag. Lub ladle yuav tsum tau qhuav nrog kub slag ua ntej siv.
(6) Alloy casting. Tom qab lub molten hlau yog luv luv solidified nyob rau hauv lub ladle, ib tug me me ntawm slag ntawm lub molten hlau yog scraped tawm, ib tug graphite pas nrig yog ntxiv los thaiv lub slag, thiab ces lub molten hlau yog poured rau hauv lub dub hlau ingot pwm. Nyob rau hauv ib tug trough-shaped cam khwb cia hlau pwm rau me me hluav taws xob furnaces, molten hlau feem ntau yog poured ncaj qha. Ua ntej pouring lub ingot, cov pwm yuav tsum tau ntxuav thiab cia qhuav. Txhawm rau kom tsis txhob ferrosilicon ua rau cov pwm pwm, cov hlau ingot hauv qhov cub yuav tsum tau txias nrog dej tom qab rho tawm, thiab cov graphite hmoov lossis txiv qaub kua mis slurry yuav tsum tau siv rau cov pwm pwm hauv lub xeev kub. Lub tiav lawm ferrosilicon yuav tsum tau muab tso ncaj nraim ntawm qhov cuam tshuam ntawm lub taub hau hlau molten.
Thaum lub sij hawm pouring, qhov tsim nyog kub thiab pouring ceev yuav tsum tau tswj. Kev nrawm nrawm yuav tsum ua raws li lub hauv paus ntsiab lus ntawm tsis muaj hlau molten splashing. Qhov sib piv ntawm qhov ntsuas kub yog feem ntau yog 100-200 degree siab tshaj qhov melting point ntawm ferrosilicon. Txhawm rau ua kom tus qauv tus neeg sawv cev thiab kov yeej qhov tsis sib xws ntawm lub ladle muaj pes tsawg leeg, cov qauv yuav tsum tau nqa tawm thaum ntxov, nruab nrab thiab lig theem ntawm casting.