Cov hlau kaum sab xis, feem ntau hu ua hlau kaum sab xis, yog cov hlau carbon rau kev tsim kho, uas yog cov hlau seem yooj yim, feem ntau yog siv rau cov khoom siv hlau thiab cov thav duab ua haujlwm. Yuav tsum muaj kev vuam zoo, kev ua haujlwm yas deformation thiab qee lub zog kho tshuab. Cov hlau billets nyoos rau kev tsim cov hlau kaum sab xis yog cov hlau billets square uas muaj cov pa roj carbon tsawg, thiab cov hlau kaum sab xis tiav lawm raug xa mus rau hauv cov xwm txheej kub-dov, normalized lossis kub-dov.
Cov hlau kaum sab xis muaj cov hlau kaum sab xis sib npaug thiab tsis sib npaug. Ob sab ntawm lub kaum sab xis sib npaug yog qhov dav sib npaug. Nws cov lus qhia yog qhia hauv millimeters ntawm qhov dav sab × qhov dav sab × qhov tuab sab. Xws li "∟ 30 × 30 × 3", nws qhia tias qhov dav ntawm 30 hli, thaum cov hlau kaum sab xis sib npaug yog 3 hli. Kuj tseem siv tau tus qauv, hais tias tus qauv yog tus lej ntawm centimeters dav, xws li ∟ 3 # qauv tsis sawv cev rau qhov loj ntawm tib hom ntawm qhov tuab ntug sib txawv, yog li daim ntawv cog lus thiab lwm cov ntaub ntawv yuav tsum sau rau ntawm ntug ntawm cov hlau kaum sab xis, qhov tuab ntug tiav lawm, zam kev qhia hauv tus qauv ib leeg.
Cov lus qhia tshwj xeeb ntawm cov hlau sib npaug rau 2 # -20 #, Cov hlau sib npaug tuaj yeem tsim raws li qhov xav tau sib txawv ntawm cov qauv ntawm ntau yam sib txawv ntawm cov tswv cuab, kuj tseem siv tau ua kev sib txuas ntawm cov tswv cuab. Siv dav hauv ntau yam qauv tsev thiab cov qauv engineering, xws li beam, choj, transmission tower, lifting machinery, ships, industrial furnace, reaction tower.
Lub sijhawm tshaj tawm: Lub Ob Hlis-20-2023
