Nyob rau hauv cov txheej txheem ntawm kev tsim cov hlau vuam, yuav muaj qhov tshwm sim ntawm cov hlau tsis xws luag yog tias txoj kev vuam tsis raug.Feem ntau cov tsis xws luag yog kub cracking, txias cracking, lamellar tearing, tsis muaj fusion thiab tsis tiav nkag, stomata thiab slag.

Kub tawg.

Nws yog tsim thaum lub sij hawm txias ntawm lub vuam.Qhov laj thawj tseem ceeb yog cov leej faj thiab phosphorus hauv cov hlau thiab vuam tsim qee qhov sib xyaw eutectic, cov khoom sib tov yog nkig thiab tawv heev.Thaum lub sij hawm txias ntawm lub vuam, cov eutectic sib tov yuav nyob rau hauv lub xeev nro kom yooj yim tawg.

Txias tawg.

Nws tseem hu ua ncua kev tawg, nws yog tsim los ntawm 200℃mus rau chav kub.Nws yuav tawg tom qab ob peb feeb txawm ob peb hnub.Yog vim li cas muaj kev sib raug zoo nrog cov qauv tsim, vuam cov ntaub ntawv, cia, thov thiab vuam txheej txheem.

Lamellar kua muag.

Thaum lub vuam kub tau txias mus rau rho tawm 400 degrees, qee lub phaj tuab yog qhov loj thiab siab impurity cov ntsiab lus, tshwj xeeb tshaj yog cov ntsiab lus ntawm cov sulfur, thiab muaj zog sib npaug rau cov kev taw qhia dov raws li daim ntawv ntawm lub zog siab qis alloy steel segregation thaum nws yog. raug rau ib tug quab yuam perpendicular mus rau thickness kev taw qhia nyob rau hauv lub vuam txheej txheem, nws yuav ua rau dov kev taw qhia stepped tawg.

Tsis muaj fusion thiab tsis tiav kev nkag mus.

Ob qho laj thawj yog qhov pib zoo ib yam, qhov tsis tsim nyog ntawm cov cuab yeej thev naus laus zis, kev ntsuas thiab qhov zawj qhov ntev, qhov huv si tsis txaus ntawm zawj thiab vuam nto lossis vuam tshuab tsis zoo.

Stomata.

Lub ntsiab yog vim li cas ntawm porosity nyob rau hauv lub weld muaj ib tug kev twb kev txuas nrog cov xaiv, khaws cia thiab siv cov khoom siv vuam, kev xaiv ntawm vuam txheej txheem tsis, lub cleanness ntawm zawj thiab kev tiv thaiv degree ntawm weld pas dej ua ke.

Slag.

Hom, cov duab thiab kev faib tawm ntawm cov khoom siv tsis yog hlau yog txuas nrog cov txheej txheem vuam thiab cov tshuaj muaj pes tsawg leeg ntawm vuam, Flux thiab vuam hlau.