A656 Carbon Steel Square Tube

A656 carbon steel square tube yog lub zog siab, qis-alloy (HSLA) steel khoom uas ua raws li tus qauv ASTM A656. Cov lus qhia dav dav no muab kev saib tob tob ntawm A656 carbon steel square raj, suav nrog nws cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, qib, kev siv, thiab cov txheej txheem tsim khoom.

ASTM A656 tus qauv qhia cov tshuaj muaj pes tsawg leeg ntawm cov hlau, kom ntseeg tau tias nws ua tau raws li qhov xav tau ntawm cov khoom siv kho tshuab. Cov hlau muaj ntau yam xws li carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), thiab lwm yam kab xws li niobium (Nb), vanadium (V), thiab nitrogen. (N). Cov ntsiab lus carbon feem ntau tsis tshaj 0.18%, thaum silicon thiab manganese cov ntsiab lus raug txwv rau 0.60% thiab 1.65%, feem. Phosphorus thiab sulfur cov ntsiab lus yog nruj me ntsis tswj xyuas kom zoo weldability thiab txhua yam khoom.

A656 carbon steel square tube muaj npe nrov rau nws cov khoom siv kho tshuab zoo heev, uas suav nrog kev ua haujlwm siab, lub zog tensile, thiab zoo ductility. Tus qauv npog ntau qib, txhua tus muaj cov khoom sib txawv kom haum rau ntau yam kev siv. Piv txwv li, Qib 50 muaj qhov tsawg kawg nkaus lub zog ntawm 345 MPa (50 ksi) thiab lub zog tensile yam tsawg kawg nkaus ntawm 450 MPa (65 ksi), thaum Qib 70 muaj qhov tsawg kawg nkaus lub zog ntawm 485 MPa (70 ksi) thiab lub zog tensile yam tsawg kawg nkaus. 585 MPa (85 ksi). Lub ductility ntawm cov hlau, ntsuas raws li elongation, kuj yog siab, kom ntseeg tau tias cov khoom muaj peev xwm tiv taus qhov tseem ceeb deformation yam tsis ua tsis tiav.

ASTM A656 tus qauv suav nrog ntau qib ntawm cov hlau, txhua tus muaj cov khoom siv tshwj xeeb. Cov qib feem ntau yog Qib 50, Qib 60, thiab Qib 70, nrog rau qee qhov chaw kuj hais txog Qib 80 thiab Qib 100. Txhua qib yog tsim los ua kom tau raws li qhov tshwj xeeb ntawm lub zog, ductility, thiab weldability. Piv txwv li, Qib 70 feem ntau yog siv rau hauv cov ntawv thov uas xav tau lub zog siab thiab zoo toughness, xws li txuas hniav thiab cov khoom siv hnyav.

A656 carbon steel square raj pom dav siv nyob rau hauv ntau yam kev lag luam vim nws cov khoom zoo heev thiab zoo weldability. Nws yog feem ntau siv rau hauv kev tsim cov choj, cov tsev, thiab lwm yam khoom siv uas yuav tsum tau muaj zog thiab kav ntev. Cov hlau muaj peev xwm tiv taus cov khoom hnyav thiab kev ntxhov siab ua rau nws zoo tagnrho rau siv hauv cov khoom siv hnyav, tshuab, thiab tsheb. Tsis tas li ntawd, nws zoo formability thiab weldability tso cai rau yooj yim fabrication thiab sib dhos, ua rau nws yog ib tug nrov kev xaiv rau manufacturers thiab fabricators.

Kev tsim cov txheej txheem ntawm A656 carbon steel square raj muaj ob peb kauj ruam tseem ceeb. Cov hlau yog thawj zaug tsim nyob rau hauv lub cub tawg steel, qhov twg cov ntaub ntawv raw yog yaj thiab ua kom zoo kom ua tiav cov tshuaj lom neeg xav tau. Cov hlau molten yog ces cam khwb cia rau hauv ingots los yog tsis tu ncua cam khwb cia rau hauv slabs, uas yog tom qab kub dov mus rau hauv lub xav tau thiab loj. Lub raj square txuas ntxiv ua tiav, xws li txiav, khoov, thiab vuam, kom ua tau raws li qhov tshwj xeeb ntawm daim ntawv thov kawg. Thoob plaws hauv cov txheej txheem tsim khoom, kev tswj xyuas nruj nruj yog nyob rau hauv qhov chaw kom ntseeg tau tias cov khoom kawg ua tau raws li ASTM A656 tus qauv thiab haum rau nws txoj kev siv.

Q1. Kuv tuaj yeem tau txais cov lus hais los ntawm koj li cas?
A1: Koj tuaj yeem tso peb cov lus, thiab peb yuav teb txhua cov lus hauv lub sijhawm. Los yog peb tuaj yeem tham hauv kab los ntawm Tus Thawj Saib Xyuas Kev Lag Luam. Thiab koj tuaj yeem pom peb cov ntaub ntawv tiv toj ntawm nplooj ntawv tiv tauj.
Q2. Kuv tuaj yeem tau txais cov qauv ua ntej kev txiav txim?
A2: Yog lawm, tau kawg. Feem ntau peb cov qauv yog dawb. peb tuaj yeem tsim los ntawm koj cov qauv lossis cov duab kos duab. Peb tuaj yeem tsim cov pwm thiab cov khoom siv.
Q3. Koj lub sijhawm xa khoom yog dab tsi?
A3: Lub sijhawm xa khoom feem ntau yog nyob ib ncig ntawm 15-20 hnub. Peb tuaj yeem xa tawm hauv 2 hnub, yog tias nws muaj Tshuag.
Q4. Koj cov nqe lus them nqi yog dab tsi?
A4: Peb lub sijhawm them nyiaj ib txwm yog 30% tso nyiaj, thiab so ua ntej xa khoom. L/C kuj txais tau. EXW, FOB, CFR, CIF, DDU.

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