Hauv kev cob qhia aluminium alloy smelting, siab -kev ua tau zoo aluminium melting rauv yog qhov tseem ceeb rau kev tsim khoom. Ib qho malfunction yuav cuam tshuam tag nrho cov kab ntau lawm. Kev lag luam aluminium melting rauv yog qhov tseem ceeb rau kev tsim khoom thiab cov khoom zoo, thiab kev nkag siab txog kev ua txhaum cai thiab lawv cov laj thawj yog qhov tseem ceeb rau kev nyab xeeb thiab kev ua haujlwm zoo.
Hom thiab Nta ntawm Aluminium Melting Rauv
Muaj aluminium melting furnaces feem ntau cais los ntawm cov qauv thiab cov txheej txheem cua sov. Vertical aluminium melting furnaces yog qhov zoo tagnrho rau cov txheej txheem nruam smelting xws li casting thiab dov. Lawv muab kev siv hluav taws xob tsawg, kev ua haujlwm siab, thiab hneev taw me me, ua rau lawv tsim nyog rau cov txheej txheem smelting hauv nruab nrab xws li nruam casting, tuag casting, thiab nqus casting. Cov furnaces no feem ntau yog siv nrog tuav lub qhov cub.
Kab rov tav aluminium melting furnaces yog dav siv tab sis muaj qis zog efficiency thiab qeeb melting speeds piv rau ntsug furnaces. Regenerative aluminium melting furnaces, siv cov cuab yeej siv hluav taws xob rov ua dua tshiab, rov siv cov khoom siv hluav taws xob rov qab los ntawm cov pa hluav taws xob los ua kom cua sov ua ntej, txhim kho thermal efficiency thiab ua rau lawv qhov kev xaiv tseem ceeb rau lub zog -txuag kev daws teeb meem.
Tej Faults thiab Lawv Ua
Ib qho yuam kev hauv aluminium melting furnaces yog cov tshuaj muaj pes tsawg leeg uas tsis yog - ua raws, uas tshwm sim los ntawm cov khoom siv raw khoom tsis raug, kev sib xyaw cov khoom pov tseg, cov khoom siv tsis raug, lossis kev rov ua dua tshiab. Cov teeb meem no ua rau cov khoom tsis zoo thiab cov khoom seem ntxiv.
Melt overheating tshwm sim thaum qhov kub ntawm cov hlau yaj ntau tshaj qhov siab tshaj plaws tso cai txwv, tshwm sim los ntawm thermocouple tsis ua hauj lwm, ntsuas malfunctions, los yog tsis ua raws li cov txheej txheem. Qee qhov xwm txheej, qhov kub ib txwm nce vim oxidation lossis tawg ntawm qhov cub kub kub.
Cov ntsiab lus hydrogen ntau dhau yog lwm qhov kev txhawj xeeb, ua rau muaj qhov tsis xws luag xws li porosity, huab cua hnab ris, thiab cov pob dawb hauv ingots. Qhov no ua rau muaj qhov tsis xws luag hauv castings thiab txo cov airtightness ntawm wrought aluminium alloy khoom.
Kev puas tsuaj rau lub cub tawg, xws li tev ntawm cov khoom siv refractory los yog teeb meem nrog lub ntuj gas system, tshuab blower, los yog cov kav dej, tuaj yeem cuam tshuam kev ua haujlwm ib txwm muaj thiab ua rau muaj kev nyab xeeb.
Tiv thaiv kev ua yuam kev thiab ua kom muaj kev nyab xeeb
Cov neeg ua haujlwm yuav tsum ua raws li cov txheej txheem ua haujlwm nyab xeeb kom tsis txhob ua haujlwm tsis zoo. Ua ntej pib lub cub tawg, hnav cov iav tiv thaiv tsim nyog thiab tshuaj xyuas txhua lub tshuab- cub tawg, hluav taws xob, thiab cov cuab yeej pabcuam- kom ntseeg tau tias lawv ua haujlwm zoo.
Purging lub kaw lus los ntawm kev khiav lub tshuab ua ntej ignition yog qhov tseem ceeb los tiv thaiv cov roj combustible. Ignition yuav tsum tsuas yog mus tom qab purging tiav kom tsis txhob tawg.
Thaum lub sij hawm them nyiaj, ua tib zoo xyuas qhov zoo, qhov xwm txheej, thiab qhov hnyav ntawm tus nqi. Cov impurities yuav tsum tau muab tshem tawm kom tsis txhob muaj kab mob, thiab cov khoom ntub dej los yog ntub dej yuav tsum raug zam. Cov nqi khoom yuav tsum tau ntxiv rau hauv cov khoom me me kom tsis txhob muaj kev puas tsuaj rau lub tshuab hluav taws xob cov khoom siv refractory.
Nyob rau hauv refining ua hauj lwm, cov nitrogen purity yuav tsum yog tsawg kawg yog 99.95%, siab tsis tshaj 0.13 MPa thiab ib tug txaus tus nqi ntawm 10-20 litres ib feeb. Lub refining kub yuav tsum tsis txhob ntau tshaj 780 degree, thiab refining tus neeg sawv cev yuav tsum yog 1.5-3 ‰ ntawm tag nrho cov loj ntawm txhuas yaj.
Kev saib xyuas tsis tu ncua yog qhov tseem ceeb los tiv thaiv xeb los yog oxide buildup ntawm lub crucible thiab tsis txhob luv circuits. Xyuas kom qhov kev ncua deb ntawm lub crucible thiab nuv cib yog tsawg kawg yog 60 mm los tiv thaiv qhov cub puas.
Los ntawm kev ua raws li cov txheej txheem kev nyab xeeb thiab kev ua haujlwm no, cov neeg ua haujlwm tuaj yeem ua kom lub tshuab hluav taws xob aluminium ua haujlwm tau zoo thiab nyab xeeb, tiv thaiv kev ua txhaum thiab ua rau muaj txiaj ntsig ntau dua rau kev lag luam.