Yuav ua li cas Thermocouples pab tiv thaiv tsis xws luag hauv Steel Manufacturing?

Thermocouples yog qhov tseem ceeb thiab muaj ntau yam hauv cov txheej txheem nyuaj thiab xav tau ntawm cov hlau tsim hauv kev tiv thaiv tsis xws luag. Cov cuab yeej ntsuas kub yooj yim no yog cov khoom tiv thaiv ntsiag to ua kom cov hlau ua tau zoo.
Raws li Seebeck effect-qhov twg qhov kub sib txawv ua rau muaj qhov sib txawv ntawm qhov sib txuas ntawm ob qhov sib txawv ntawm cov hlau-thermocouples Ib qho tom qab ntawd hloov qhov hluav taws xob no mus rau qhov ntsuas kub. Lub tswv yim yooj yim tab sis zoo no yog siv hauv kev tsim steel los taug qab thiab tswj qhov kub thiab txias ntawm ob peb theem tseem ceeb.
Thermocouples tseem ceeb heev rau kev tiv thaiv kev ua txhaum thaum lub sij hawm melting. Cov ntaub ntawv nyoos muaj xws li cov hlau ore, cov hlau khib nyiab, thiab cov khoom siv alloying yaj hauv lub cub hluav taws xob hluav taws xob lossis lub cub hluav taws xob oxygen hauv qhov kub thiab txias. Muaj ntau qhov teeb meem tuaj yeem ua raws li kev tswj hwm qhov kub tsis raug. Piv txwv li, melting tej zaum yuav ua tsis tiav nyob rau hauv qis kub. Cov khoom sib xyaw hauv cov hlau molten tuaj yeem tshwm sim los ntawm qhov no. Cov kev suav nrog no ua haujlwm raws li cov qauv hlau tsis pub leej twg paub. Kev ntxhov siab ntau uas lawv tsim thaum lub sijhawm ua haujlwm tom qab tuaj yeem ua rau tawg lossis tawg hauv cov khoom tiav. Nws zoo li muaj me ntsis pebbles nyob rau hauv ib tug du, ntws dej; lawv cuam tshuam qhov ntws thiab tej zaum yuav ua rau tej yam hauv qab. Thermocouples muab tso rau hauv lub qhov cub muab qhov ntsuas kub zoo uas cia cov neeg ua haujlwm hloov kho cua sov ua haujlwm kom lav tag nrho cov melting thiab txo cov kev suav no.
Ntawm qhov tod tes, kub dhau heev thaum lub sij hawm yaj tuaj yeem ua rau cov hlau oxidation ntau dhau. Cov hlau molten yuav hnov ​​​​mob nrog oxygen nyob rau hauv lub qhov cub cua, tsim oxides uas ua rau cov hlau tsis zoo. Cov oxides no tuaj yeem cuam tshuam lub zog thiab ductility ntawm cov hlau. Cov khoom oxidation hauv cov hlau matrix tuaj yeem cuam tshuam nws cov kev ua tau zoo, ib yam li xeb tsis muaj zog hlau. Thermocouples nres qhov no los ntawm kev tso cai rau qhov ntsuas kub thiab tswj tsis pub dhau qhov tsim nyog txwv cov oxidation.
Thermocouples tseem tseem ceeb heev nyob rau hauv cov txheej txheem refining. Hauv ladle refining lossis nqus degassing, qhov ntsuas kub tswj kev tshem tawm cov kab mob xws li sulfur, phosphorus, thiab lwm yam kab mob. Cov txheej txheem tshuaj nyob rau hauv tus nqi ntawm steel purification yog heev rhiab heev rau kub. Rau cov txheej txheem desulfurizing, piv txwv li, qhov tshwm sim zoo nyob ntawm qhov kub thiab txias. Yog tias qhov kub thiab txias deviate txawm los ntawm ob peb degrees, cov tshuaj tiv thaiv tsis tuaj yeem mus raws li qhov xav tau thiab ua rau tsis muaj leej faj nyob hauv cov hlau. Tshwj xeeb tshaj yog nyob rau hauv kev ua haujlwm kub, sulfur hauv cov hlau yuav ua rau brittleness. Thermocouples lav tias qhov kub thiab txias yog khaws cia nyob rau hauv qhov zoo tagnrho rau kev tshem tawm cov impurities, yog li txhim khu kev huv ntawm cov hlau thiab txo qis qhov txaus ntshai ntawm kev ua txhaum los ntawm induced embrittlement.
Nyob rau hauv cov nqe lus ntawm casting, thermocouples yog qhov zais cia kom tsis txhob cuam tshuam qhov tsis zoo. Lub molten steel qhov kub thaum nws yog poured rau hauv pwm yuav tsum tau zoo tswj. Qhov kub siab dhau lawm tuaj yeem ua rau cov kab noj hniav shrinkage ntawm lwm yam teeb meem. Raws li cov hlau txias, qhov kub siab pib tuaj yeem ua rau cov txheej txheej sab nrauv kom khov ua ntej, tsim cov voids hauv sab hauv raws li cov ntawv cog lus molten hlau ntxiv. Qhov no zoo li lub khob dej khov ua tsis zoo uas cov dej khov tsis sib xws, tawm hauv qhov dej khov. Tsis tas li ntawd, qhov kub ntawm cov dej kub tuaj yeem ua rau tawg vim kev ntxhov siab thermal. Hloov pauv, yog tias qhov ntsuas kub qis dhau lawm, cov hlau yuav tsis ntws zoo txaus los sau cov pwm kom tiav, ua rau tsis tiav casts. Thermocouples ntsia ze ntawm cov pwm los yog hauv cov txheej txheem pouring muab cov ntaub ntawv ntsuas kub ntawm lub sijhawm, tso cai rau kev hloov kho rau cov txheej txheem pouring thiab qhov cua txias ntawm pwm kom tsis txhob muaj qhov tsis zoo no.
Hauv cov txheej txheem kev kho cua sov nrog rau kev sib tsoo, quenching, thiab tempering, thermocouples yog qhov tseem ceeb rau kev zam qhov tsis xws luag. Nyob rau hauv annealing, cov hlau yog rhuab thiab maj mam txias kom tso tawm sab hauv tensions thiab txhim khu ductility. Annealing hu rau qhov ntsuas kub tsawg. Yog tias qhov ntsuas kub tsis tswj tau, cov txheej txheem ntawm kev txo qhov nro yuav tsis txaus, yog li nthuav tawm cov hlau kom tawg thaum siv tom qab siv lossis tuav. Nyob rau hauv quenching-tus txheej txheem ceev ceev-qhov kub poob yog qhov tseem ceeb heev. Yog tias qhov txias txias dhau lawm, cov hlau tsis tuaj yeem ncav cuag qhov tsim nyog hardness. Yog tias nws nrawm dhau, nws yuav ua rau tawg thiab ua rau muaj kev ntxhov siab ntau dhau. Thermocouples muab qhov xav tau ntawm qhov ntsuas kub kom raug tswj xyuas cov txheej txheem kho cua sov, yog li txo qhov ua tau ntawm cov teeb meem no.
Hauv cov ntsiab lus, cov thermocouples yog qhov tseem ceeb rau kev zam qhov tsis zoo hauv kev tsim steel. Dab tsi tiv thaiv qhov zoo ntawm cov hlau yog lawv lub peev xwm los saib xyuas thiab tswj qhov kub thiab txias ntawm txhua theem ntawm cov txheej txheem-los ntawm melting mus rau refining, casting, thiab kev kho cua sov. Thermocouples tshem tawm ntau qhov ua tau ntawm qhov tsis zoo los ntawm kev lees paub tias qhov kub thiab txias tas li nyob rau hauv qhov zoo tagnrho, yog li ua kom muaj zog dua, muaj kev cia siab rau cov khoom lag luam steel uas ua tau raws li qhov xav tau ntawm ntau qhov sib txawv.