Dab tsi yog non-metallic inclusions? Nws feem ntau tuaj qhov twg?
Cov theem uas tsis yog xim hlau tsim los yog sib xyaw hauv lub sijhawm smelting, casting, thiab solidification ntawm molten steel yog hu ua non-metallic inclusions. Cov theem tsis yog xim hlau yog cov khoom sib txuas tsim los ntawm kev sib xyaw ntawm cov hlau thiab Si nrog cov khoom tsis yog xim hlau, xws li oxides, nitrides, sulfides, thiab lwm yam. Vim tias muaj cov khoom sib txuas, qhov txuas ntxiv ntawm cov hlau matrix cuam tshuam, ua rau cov hlau tsis sib xws. qauv thiab cuam tshuam rau mechanical thiab processing zog ntawm cov hlau. Txawm li cas los xij, cov khoom siv tsis yog hlau kuj tseem muaj txiaj ntsig zoo rau cov hlau, xws li kev tswj cov qoob loo loj, nag lossis daus hardening, txhawb cov nplej orientation, thiab txhim kho kev ua haujlwm ntawm cov hlau.
Piav txog 10 qhov zoo tsis xws luag hauv kub dov sawb hlau?
Scars, npuas, nto inclusions, delamination, kab nrib pleb, oxide scales, roller marks, indentations, khawb, tsis, ntug tawg, thiab pitting.
Dab tsi yog cov haujlwm ntawm kev nruam casting tundish?
Cov haujlwm ntawm qhov nruam casting tundish:
- Txo lub siab zoo li qub ntawm cov hlau molten, tswj cov kua dej ruaj khov ntawm tundish, thiab txhaj cov hlau molten rau hauv crystallizer.
- Txhawb nqa qhov ntab ntawm kev suav nrog hauv cov hlau molten.
- Split molten hlau.
- Khaws cov hlau molten thiab ua tiav ntau lub cub tawg nruam casting.