Q345B loj-inch seamless square steel yeeb nkab yog cov khoom siv hlau ntev uas muaj qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob. Piv nrog cov khoom siv steel hlau xws li cov hlau puag ncig, cov kav dej loj loj seamless square steel yeeb nkab yog qhov sib dua ntawm qhov hnyav thaum qhov khoov thiab lub zog torsional zoo ib yam. Lawv yog cov kev lag luam hla ntu hlau thiab tau siv dav hauv kev tsim cov khoom siv thiab cov khoom siv tshuab.

Q345B loj-inch seamless square steel kav yuav muab faib ua square steel kav thiab tshwj xeeb-zoo li tus steel kav raws li qhov sib txawv cross-sectional cheeb tsam duab. Thaum lub voj voog hla ntu yog raug rau sab hauv lossis sab nraud radial siab, lub zog sib xws. Yog li ntawd, feem ntau ntawm cov kav hlau steel yog cov kav dej. Txawm li cas los xij, cov kav dej ncig kuj muaj qee yam kev txwv. Piv txwv li, nyob rau hauv cov xwm txheej ntawm lub dav hlau dabtsi yog khoov, lub voj voog yeeb nkab yuav tsis muaj zog li seamless square steel kav thiab cov kav dej nyob rau hauv bending zog. Cov kav dej square thiab cov duab plaub feem ntau yog siv rau hauv qee lub tshuab ua liaj ua teb thav ntawv, steel thiab ntoo rooj tog, thiab lwm yam. Cov kav dej tshwj xeeb zoo li steel nrog lwm cov duab hla ntu kuj yuav tsum tau ua raws li kev siv sib txawv.

Qhov zoo ntawm Q345B loj txoj kab uas hla square steel yeeb nkab yog dab tsi?
1. Qhov saum npoo ntawm Q345B loj-inch square steel yeeb nkab yog ntau ruaj thiab muaj kev tiv thaiv xeb thiab tiv thaiv xeb. oxidation tus nqi yuav tsis ceev heev thiab dawb xeb yuav tsis tsim nyob rau hauv square steel yeeb nkab.
2. Nws muaj cov khoom tiv thaiv corrosion thiab hnav-resistant, ua rau seamless steel yeeb nkab muaj lub neej ntev kev pab cuam.
3. Seamless steel kav yog tiv thaiv. Tom qab cua sov, kub-dip galvanizing yog ua nyob rau hauv txhua txoj hauj lwm ntawm seamless steel yeeb nkab, thiab lub convex thiab concave txoj hauj lwm yog tiv thaiv.
4. Vim tias cov yeeb nkab steel seamless yog kub-dip galvanized rau sab nraud, nws txuag lub sijhawm ntawm kev pleev xim lossis txhuam hniav, ua rau kev tsim kho yooj yim dua.
5. Kub-dip galvanized steel kav yuav tsis khov lossis tawg txawm tias tsis pub dhau 39 hnub, ua rau lawv zoo heev rau cov cheeb tsam sab qaum teb.

Thaum lub sij hawm qhov kev lees txais ntawm Q345B loj-inch square steel yeeb nkab, nws yog ib qho tseem ceeb uas yuav tsum tau xyuam xim rau qhov sib xws ntawm plaub fab, thiab qhov sib txawv ntawm plaub sab yog nyob rau hauv lub Scope ntawm lub teb chaws tus qauv. Lub teb chaws tus qauv rau kev hloov seamless square thiab cov kav dej yog feem ntau: GB / T3094-2008, thiab nws tseem nyob hauv tus qauv no. Qhov kev ua yuam kev loj ntawm R lub kaum sab xis tau raug kho. Lub ci square steel yeeb nkab muaj zog ntau dua qhov ncaj seam square steel yeeb nkab nyob rau hauv cov nqe lus ntawm bearing siab. Tus nqi ntawm lub ci square steel yeeb nkab yog tsawg kawg yog ntau dua. Lub ci ci square steel yeeb nkab yuav muaj cov yeeb nkab kawg thaum ua tiav. Nyob rau hauv rooj plaub ntawm tus Tsov tus tw tiaj tus, xaiv tus Tsov tus tw yog ib qho kev ntsuas ntxiv.

Vim li cas Q345B loj-inch square steel kav yuav tsum tau siv? Qhov laj thawj tseem ceeb yog txhawm rau txhim kho qhov zoo ntawm Q345B loj-inch square steel kav, suav nrog:
(1) Hais txog cov pa roj carbon siab thiab cov hlau alloy siab, quenching tuaj yeem txhim kho nws lub zog los txhim kho drillability.
(2) Hais txog cov pa roj carbon tsawg, quenching tuaj yeem hloov kho cua sov los npaj rau induction quenching tuaj yeem txo qhov deformation ntawm seamless kav thiab txo cov nqi tsim khoom.
(3) Hais txog high-carbon steel, quenching tuaj yeem tshem tawm cov qauv ntawm cov cementite faib, uas yog qhov zoo rau spheroidizing annealing.
(4) Rau cov kav dej loj thiab nruab nrab tsis muaj seamless lossis steel castings nrog kev hloov pauv loj, quenching tuaj yeem siv los hloov kho cua sov kom txo tau qhov kev xav ntawm deformation thiab tawg los yog npaj rau kev kho cua sov.
(5) Kev kho cua sov los tiv thaiv qhov chaw ntawm cov kav dej seamless tuaj yeem tua kom tshem tawm qhov kub thiab txias kom lawv tuaj yeem rov kho dua.
(6) Siv nyob rau hauv txhuas tuag castings kom nce cov ntsiab lus ferrite ib txwm thiab txhim kho lub zog thiab hnav tsis kam ntawm castings.