Cas tsis induction melting rauv ua hlau?

Thawj yog kev npaj rau steelmaking nyob rau hauv induction melting rauv:

1. Thaum npaj rau steelmaking, kev soj ntsuam ua ntej yuav tsum tsis txhob ignored. Koj yuav tsum xub nkag siab txog qhov xwm txheej ntawm lub qhov cub hauv ob sab phlu, seb cov cuab yeej tsim khoom puas tiav, thiab seb lub vaj huam sib luag induction melting rauv yog qhov qub.

2. Txhua ob lub cub tawg yog ib txheej, thiab cov khoom tsim nyog xws li ferrosilicon, nruab nrab manganese, hluavtaws slag, tus neeg saib xyuas cov cua sov, thiab lwm yam yuav tsum tau npaj rau hauv qhov chaw thiab muab tso rau hauv nruab nrab ntawm lub qhov cub.

3. Cov khoom siv hlau yuav tsum nyob hauv qhov chaw, thiab lub qhov cub tsis tuaj yeem pib yog tias cov khoom siv hlau tsis tau npaj txhij.

4. Ua tib zoo saib xyuas cov rwb thaiv tsev roj hmab ntawm lub qhov cub induction melting, thiab nws yog nruj me ntsis txwv tsis pub tawm hauv qhov khoob.

Qhov thib ob yog cov xim thaum lub induction melting rauv steelmaking nkag mus rau theem ntau lawm:

1. Lub tshuab cua sov tshiab yuav tsum ci kom nruj raws li qhov yuav tsum tau ua ntawm cov txheej txheem ci ci tshiab, thiab lub sijhawm ci yuav tsum ntau dua 2 teev.

2. Ua ntej ntxiv ib lub khob nqus me me rau hauv lub qhov cub kom tiv thaiv lub qhov cub hauv ob sab phlu. Nws tsis raug tso cai ncaj qha ntxiv cov khoom loj rau hauv lub qhov cub tawg, thiab tom qab ntawd qhib hluav taws xob. Nyob rau lub sijhawm no, tus neeg ua haujlwm ntawm lub cub tawg yuav tsum ntxiv cov khoom me me uas tau tawg nyob ib ncig ntawm lub qhov cub rau hauv lub qhov cub hauv lub sijhawm, thiab nws yog txwv tsis pub tso tseg. Lub qhov cub sab saum toj thiab silicon steel ntawv punch tsuas yog tso cai siv thaum lub qhov cub, thiab tsis pub siv rau lub sijhawm so.

3. Lub disk hoist nqa cov khoom mus rau lub qhov cub los ntawm lub tsev khaws khoom, thiab cov neeg ua haujlwm pem hauv ntej txheeb cov khoom seem. Cov khoom tawg yooj yim thiab cov khoom tawg tau raug muab tso ncaj qha rau hauv lub thawv ntim tshwj xeeb thiab sau npe thiab lees paub los ntawm lub qhov cub ruaj ntseg.

4. Lub thawv ntim tshwj xeeb rau cov khoom siv hluav taws xob thiab cov khoom tawg tau muab tso rau nruab nrab ntawm ob pawg ntawm lub cub tawg, thiab tsis muaj leej twg tuaj yeem txav mus los ntawm qhov xav tau.

5. Kev pub noj nyob rau hauv pem hauv ntej ntawm lub cub tawg yog mas phau ntawv pub. Tom qab lub qhov cub tawg tau ua tib zoo txheeb xyuas, qhov ntev ntawm cov khoom siv tsawg dua 400mm, thiab cov khoom uas tau ua tib zoo xaiv los ntawm tus neeg saib xyuas qhov cub tuaj yeem muab ntxiv los ntawm lub khob nqus. Tus thawj coj tsav tsheb yog qhov me me ntawm txhua lub rooj rau qhov cub. Rauv tus tswv, yog tias lwm tus neeg hais kom tsav lub khob nqus tsev noj mov, tus neeg tsav tsheb tsis raug tso cai noj.

6. Qhov pub mis ntawm lub khob nqus tsev yuav tsum tswj. Tom qab ntxiv, cov seem hlau tsis pub dhau qhov chaw ntawm lub qhov cub qhov ncauj ntawm lub qhov cub induction melting. Cov khoom seem uas tawg nyob ib ncig ntawm lub qhov cub lub qhov ncauj yuav tsum tau ntxuav nrog cov khob nqus dej. Thaum lub sij hawm noj cov txheej txheem, thaj tsam ib puag ncig ntawm lub induction melting rauv yuav tsum tau ceev kom huv si kom tsis txhob cov seem hlau poob thiab ua rau ignition ntawm induction coil los yog cable sib txuas.

7. Nws yog nruj me ntsis txwv tsis pub rau pawg loj ntawm cov khoom seem ntawm lub platform, thiab tag nrho cov nyiaj raug tswj tsis pub dhau 3 lub khob nqus dej kom txo tau qhov nyuaj ntawm cov khoom seem.

8. Thaum muaj kev tawg, tus neeg teb xov tooj yuav tsum tam sim ntawd tig nws rov qab mus rau lub qhov ncauj ntawm lub qhov cub, thiab txav deb ntawm qhov chaw sai sai.

9. Thaum lub sij hawm ua ntej pub mis, cov khoom siv ntev thiab loj yuav tsum tau txhim kho thiab ntxiv rau lub qhov cub kom yaj lawv mus rau hauv lub pas dej molten kom sai li sai tau. Nws yog nruj me ntsis txwv tsis pub ntxiv lawv flatly ua bridging. Yog tias cov khoom siv hauv qhov cub pom tias muaj kev sib txuas, tus choj yuav tsum raug rhuav tshem hauv 3 feeb. Tus nqi yog yaj sai sai rau hauv lub pas dej molten. Yog tias tus choj tsis tuaj yeem raug puas ntsoog li ntawm 3 feeb, lub zog yuav tsum raug txiav tawm lossis tus choj yuav tsum raug rhuav tshem nyob rau hauv lub tshav kub preservation lub xeev ua ntej lub hwj chim yuav raug xa mus rau ib txwm smelting.

10. Rau qee qhov seem hlau uas hnyav hnyav thiab xav tau ntau tshaj 2 tus neeg tsiv mus rau hauv lub qhov cub, nws yog txwv tsis pub muab pov rau hauv qhov cub. Ib qho kev hloov pauv yuav tsum tau ua rau ntawm lub cub tawg, thiab ua tib zoo thawb mus rau hauv lub qhov cub.

11. Lub tubular seem yog ntxiv rau lub qhov cub, thiab lub qhov ncauj ntawm cov yeeb nkab yuav tsum nyob rau hauv cov kev taw qhia ntawm tapping, thiab nws tsis pub nyob rau hauv cov kev taw qhia ntawm manned ua hauj lwm.

Rau cov hlau txias thiab luv-kawg nruam casting slabs nyob rau hauv lub slag ladle thiab tundish, cov hlau molten nyob rau hauv lub induction melting rauv yuav tsum tau ntxiv upright tom qab cov hlau molten ncav cuag ntau tshaj 2/3, thiab nws tsis raug tso cai rau ntaus lub cub tawg. hauv ob sab phlu.

13. Thaum cov hlau molten nyob rau hauv induction melting rauv mus txog ntau tshaj 70%, coj mus kuaj rau kev soj ntsuam. Cov qauv yuav tsum tsis muaj qhov tsis xws luag xws li qhov shrinkage, thiab tsis muaj steel tuav yuav tsum tau muab tso rau hauv cov khob coj mus kuaj. Tom qab cov tshuaj muaj pes tsawg leeg ntawm cov qauv tuaj tawm, cov neeg ua haujlwm uas npaj cov ntsiab lus yuav tsum ua raws li qhov xwm txheej ntawm ob lub raum. Txiav txim siab tus nqi ntawm cov alloy ntxiv.

14. Yog hais tias qhov tshwm sim ntawm kev tshuaj ntsuam xyuas nyob rau hauv pem hauv ntej ntawm lub cub tawg qhia tau hais tias cov pa roj carbon ntau, ntxiv ib co hlau oxide nuggets rau decarburization; yog tias nws pom tias cov pa roj carbon tsawg, ntxiv qee cov npua hlau nuggets rau recarburization; Yog hais tias qhov nruab nrab leej faj ntawm ob lub cub tawg yog tsawg dua los yog sib npaug rau 0.055%, cov rakes yuav raug tso tseg thaum tapping. Oxidized slag, nce tus nqi ntawm hluavtaws slag ntxiv rau desulfurization. Lub sijhawm no, steel tapping kub yuav tsum tau nce kom tsim nyog. Yog hais tias qhov nruab nrab leej faj ntawm ob lub rauv yog ≥0.055%, cov hlau molten yuav tsum tau kho nyob rau hauv ib lub qhov cub cais, uas yog, ib feem ntawm high-sulfur molten steel yog poured rau hauv lub ladle muab tso rau hauv lwm lub cub tawg, ces ntxiv ib co. silicon steel ntawv xuas nrig ntaus rau hauv ob lub qhov cub rau smelting thiab ces tapping. Nyob rau hauv cov ntaub ntawv ntawm phosphorus siab, nws tsuas yog ua tau nyob rau hauv ib tug cais qhov cub.

15. Tom qab tag nrho cov seem hlau nyob rau hauv lub cub tawg tau melted, cov pab pawg nyob rau hauv pem hauv ntej ntawm lub cub tawg yuav co lub cub tawg rau ncuav lub slag. Tom qab ncuav lub slag, nws yog nruj me ntsis txwv tsis pub muab ntub, oily, pleev xim rau thiab tubular seem rau hauv lub qhov cub. Cov ntaub ntawv qhuav thiab huv yog nyob rau hauv cov txheej txheem smelting. Nws yuav tsum tau npaj. Tom qab cov hlau molten nyob rau hauv lub cub tawg puv, ntxuav lub slag dua. Tom qab ntxuav, ceev nrooj ntxiv cov alloy los kho qhov muaj pes tsawg leeg. Cov hlau tuaj yeem tapping ntau tshaj 3 feeb tom qab cov hlau txuas ntxiv. Lub hom phiaj yog ua kom cov hlau muaj ib qho sib xyaw ua ke hauv qhov cub.

16. Tapping kub: Upper nruam casting 1650-1690; molten hlau txog 1450.

17. Ntsuas qhov kub ntawm cov hlau molten nyob rau hauv pem hauv ntej ntawm lub cub tawg, thiab tswj lub hwj chim kis tau tus mob nkhaus raws li tapping kub thiab tapping lub sij hawm yuav tsum tau rau nruam casting. Nws yog nruj me ntsis txwv tsis pub kom lub induction melting rauv nyob rau hauv lub siab kub theem (lub tuav kub yog tswj hauv qab no 1600 ℃)

18. Qhov kub nce sai sai tom qab tau txais kev ceeb toom ntawm nruam casting steel tapping. Qhov cua sov ntawm lub qhov cub induction melting rauv hauv lub xeev cov kua: txog 20 ℃ / min ua ntej 20 lub cub tawg; txog 30 ℃ / min rau 20-40 rauv; kwv yees li 30 ℃ / min rau cov cub tawg siab tshaj 40 Nws yog 40 ° C / min. Nyob rau tib lub sijhawm, nco ntsoov tias qhov kub ntawm qhov cub kub ntau dua, qhov cua sov ceev dua.

19. Thaum lub qhov cub tawg thawj zaug, 100 kg ntawm cov nplaim hluavtaws tau ntxiv rau cov khoom siv rau kev khaws cia kom sov, thiab tom qab lub tshuab ua kom sov thib ob tau siv, 50 kg ntawm tus neeg sawv cev npog tau ntxiv rau cov ladle rau kev txuag hluav taws xob.

20. Tom qab lub qhov cub induction melting tiav lawm, xyuas cov txheej txheem hauv ob sab phlu kom zoo, thiab nws yog nruj me ntsis txwv tsis pub ncuav dej rau hauv lub qhov cub kom txias; Yog tias qee qhov ntawm lub qhov cub hauv ob sab phlu yog qhov hnyav heev, lub qhov cub yuav tsum tau kho kom zoo ua ntej pib lub qhov cub, thiab lub cub tawg yuav tsum tau tos hauv lub cub tawg tom qab kho. Kev pub mis tsuas yog ua tau tom qab tag nrho cov dej tau evaporated. Ua ntej, ntxiv lub khob nqus dej silicon steel punch rau hauv lub qhov cub, thiab tom qab ntawd ntxiv lwm cov khoom seem. Thawj lub cub tawg tom qab kho lub cub tawg yuav tsum tswj lub hwj huam mov nkhaus, kom lub qhov cub hauv ob sab phlu muaj cov txheej txheem sintering los xyuas kom meej qhov zoo ntawm lub cub tawg, nws yog nruj me ntsis txwv tsis pub ntxiv cov khoom loj ntawm cov khib nyiab rau lub cub tawg tam sim ntawd tom qab kho qhov cub. rauv.

21. Thaum lub sij hawm tag nrho cov txheej txheem ntau lawm, nws yog nruj me ntsis txwv tsis pub kom lub cub tawg vaj huam sib luag rau sab nraum, thiab cov insulating roj hmab yuav tsum tau hloov nyob rau hauv lub sij hawm yog hais tias nws puas.