Dab tsi yog cov yam ntxwv thiab qhov zoo ntawm lub tshuab nqus tsev melting furnaces?

Dab tsi yog cov yam ntxwv thiab qhov zoo ntawm lub tshuab nqus tsev melting furnaces?

1. Lub tshuab nqus tsev melting (lub tshuab nqus tsev melting rauv) hloov cov physicochemical tshuaj tiv thaiv tej yam kev mob uas tshwm sim nyob rau hauv atmospheric siab, feem ntau los ntawm ib tug txo nyob rau hauv roj theem siab. Ntev npaum li lub sijhawm gaseous koom nrog cov tshuaj tiv thaiv metallurgical, thiab tus naj npawb ntawm cov molars ntawm cov pa hauv cov khoom siv tshuaj tiv thaiv yog ntau dua li cov molars ntawm cov pa hauv cov reactants, txo lub zog siab tuaj yeem hloov qhov sib npaug ntawm cov tshuaj tiv thaiv rau kev nce hauv cov khoom gaseous. Qhov no yog cov yam ntxwv tseem ceeb ntawm physicochemical cov tshuaj tiv thaiv hauv lub tshuab nqus tsev melting.

2. Ib qho ntawm qhov tsis zoo ntawm atmospheric melting (lub tshuab nqus tsev melting furnace) thiab casting yog qhov nyuaj ntawm kev tswj cov alloy muaj pes tsawg leeg (feem ntau yog qee cov ntsiab lus reactive) vim yog hlawv -tawm. Lub tshuab nqus tsev melting, txawm li cas los xij, tsis muaj paug los ntawm qhov chaw nyob ib puag ncig. Cov hlau molten yog decoupled los ntawm oxygen thiab nitrogen nyob rau hauv cov huab cua, tso cai rau nruj tswj cov ntsiab lus ntawm reactive ntsiab xws li txhuas thiab titanium nyob rau hauv lub alloy. Qhov no ua rau cov alloy muaj pes tsawg leeg nyob rau hauv qhov nqaim heev, yog li ua kom cov hlau ua haujlwm zoo, zoo, thiab ruaj khov.

3. Carbon Deoxidation Reaction: Nyob rau hauv atmospheric melting, cov pa roj carbon - cov tshuaj tiv thaiv oxygen ua tus neeg saib xyuas degassing thiab muab cov neeg kho tshuab nplawm rau cov hlau molten. Txawm li cas los xij, vim muaj peev xwm deoxidizing tsis muaj zog, nws tsis tuaj yeem siv ib leeg ua deoxidizer; nag lossis daus deoxidation feem ntau yuav tsum tau siv hlau deoxidizers xws li silicon lossis txhuas. Nyob rau hauv lub tshuab nqus tsev melting, cov roj theem siab siab thiab kev tshem tawm tas li ntawm CO npuas tsim los ntawm cov pa roj carbon - cov tshuaj tiv thaiv oxygen hloov qhov sib npaug ntawm CO tsim, piv txwv li, [C] + [O]={CO} cov tshuaj tiv thaiv txuas ntxiv mus rau sab xis, yog li txhim kho cov pa roj carbon deoxidizing muaj peev xwm.

Cov ntaub ntawv siv tau dav dav qhia tau hais tias lub tshuab nqus tsev melting nce carbon lub peev xwm deoxidizing los ntawm kwv yees li 100 npaug piv rau atmospheric melting. Txo cov pa oxygen ntawm nickel{2}}raws li alloys kom qis dua 20 × 10⁻⁶ tsis yooj yim thaum lub tshuab nqus tsev melting. Cov pa roj carbon deoxidation nyob rau hauv lub tshuab nqus tsev tsis tsuas yog muaj peev xwm deoxidation siab, tab sis nws cov khoom deoxidation kuj yog gaseous, uas yog yooj yim tshem tawm thiab tsis paug cov molten hlau pas dej ua ke. Qhov no zoo dua li deoxidizers uas siv silicon, aluminium, thiab lwm yam los tsim cov khoom deoxidation. Yog li ntawd, carbon yog ib qho zoo tshaj plaws deoxidizer nyob rau hauv lub tshuab nqus tsev melting.