Transverse cracks yuav cuam tshuam rau cov khoom tiav lawm tom qab dov.Ua kom lub sij hawm tshem tawm billet, ob qho tib si zoo heev.Lub slab kub yog brittle cheeb tsam ntawm 700-900 ℃.Yog vim li cas cov kab nrib pleb hauv qab yog 1050-1100 ℃, transverse kab nrib pleb ntawm qhov yog vim li cas yog lub pob zeb nto los ntawm ib ntu loj ncaj ncaj ncaj kev ntxhov siab.Niobium nitride nyob rau hauv austenite grain ciam teb txo cov binding quab yuam, lub grain ciam los nag.Nyob rau ntawm no nyob rau hauv lub nkhaus seem slab hlws ris arc tsis zoo, uas ua rau ib tug qis nto tawg.Ntsug kab nrib pleb thiab tshuaj muaj pes tsawg leeg, pwm txias dej kub, pwm khoom, tshuaj muaj pes tsawg leeg ntawm slag, nruam casting tshuab precision theem nrab cua txias system ntsig txog.Cov kev tiv thaiv ntsig txog:
1. Tswj steel muaj pes tsawg leeg.Sim tiv thaiv wC yog 0.12% -0.16% D36 steel carbon cov ntsiab lus nyob rau hauv cov txheej txheem smelting tswj txoj kev raws li lub sab sauv txwv.Ua tau zoo txo ​​cov kab nrib pleb.Peritectic tshuaj tiv thaiv cheeb tsam.
2. Tswj crystallization kub tsis tu ncua pwm kub, pwm kub hloov txoj kev zoo los txhim kho yog ua kom cov pwm txias dej preheating ntaus ntawv.Tiv thaiv qhov tshwm sim ntawm cov kab nrib pleb thaum huab cua hloov.Nws kuj tseem tuaj yeem siv tom qab txhua qhov tso tawm thiab lub sijhawm nchuav tsis qhib thaum dej kub qis dua 20 ℃ pwm pwm txias dej, kom ntseeg tau tias qhov kub ntawm cov pwm pwm zam.
3. Kho cov txheej txheem crystallization tsis tau kho cov dej qhov loj ntawm pwm, raws li qhov sib txawv tooj liab thickness.Los ntawm kev kho tus nqi ntawm cov dej kom ntseeg tau tias cov theem sib txawv ntawm tib lub pwm txias siv.
4. Txhawm rau txhim kho cov cua txias thib ob, txhim kho qhov chaw ncaj qha qhov kub thiab txias, los ntawm kev ua kom zoo dua qhov cua txias thib ob.Tiv thaiv brittle cheeb tsam billet straightening, tuaj yeem txo qhov tshwm sim ntawm slab transverse tawg.
5. Strand los ntawm strand zoo li ntxuav thiab tshem tawm ntawm slab scarfing ces kaum, yog ib tug zoo txhais tau tias los ntxuav lub slab billet zaum kawg kev ruaj ntseg zoo.Peb tuaj yeem txhim kho qhov zoo kawg nkaus ntawm slab.