Q345D Carbon Steel Square Tube

Q345D carbon steel square tube yog cov khoom siv ntau yam thiab ua tau zoo siv dav hauv ntau qhov kev lag luam vim nws cov khoom tshwj xeeb thiab kev ua haujlwm zoo heev. Kab lus no muab cov ntsiab lus dav dav ntawm Q345D carbon steel square raj, suav nrog nws cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, kev siv, thiab lwm yam.

Q345D carbon steel square tube yog cov hlau tsis tshua muaj hlau nrog cov tshuaj lom neeg tshwj xeeb uas ua rau nws cov khoom tshwj xeeb. Raws li GB / T1591-2008 tus qauv, cov ntsiab lus tseem ceeb hauv Q345D suav nrog carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), thiab lwm yam hauv cov lej. Cov ntsiab lus carbon feem ntau tsawg dua lossis sib npaug rau 0.18%, uas pab tswj kom muaj qhov sib npaug ntawm lub zog thiab ductility. Cov ntsiab lus ntawm silicon thiab manganese kuj tau ua tib zoo tswj los txhim kho cov hlau lub zog thiab hardness, thaum phosphorus thiab sulfur yog khaws cia nyob rau theem qis kom txo lawv qhov tsis zoo ntawm cov hlau plasticity thiab toughness.

Ib qho ntawm lub zog tseem ceeb ntawm Q345D carbon steel square raj yog nws cov cuab yeej tshwj xeeb. Nws nthuav tawm lub zog ua haujlwm siab (feem ntau ntau dua lossis sib npaug ntawm 345 MPa) thiab lub zog tensile (xws li 450 txog 630 MPa), ua rau nws tsim nyog rau cov ntawv thov uas xav tau lub zog thiab kav ntev. Tsis tas li ntawd, Q345D steel muaj qhov zoo ductility, nrog tus nqi elongation ntawm ntau dua lossis sib npaug li 21%, thiab qhov kub thiab txias zoo heev, raws li pom los ntawm nws qhov cuam tshuam toughness ntawm -20 degree (Ntau dua lossis sib npaug rau 34J). Cov khoom no xyuas kom meej tias lub raj square tuaj yeem tiv taus ntau yam kev ntxhov siab thiab kev thauj khoom yam tsis muaj kev poob, txawm tias nyob rau hauv ib puag ncig hnyav.

Q345D carbon steel square raj pom cov ntawv thov thoob plaws ntau qhov kev lag luam. Nws lub zog siab, ua haujlwm ntev, thiab kev ua haujlwm vuam zoo ua rau nws zoo tagnrho rau kev siv hauv cov qauv siv xws li txuas hniav, vaj tse, thiab kev tsim kho. Hauv kev thauj mus los, nws yog siv los tsim cov tsheb thav duab, chassis, thiab lwm yam khoom uas yuav tsum tau muaj zog thiab nruj. Tsis tas li ntawd, Q345D square tube kuj tsim nyog siv rau hauv cov khoom siv kho tshuab, cov hlab ntsha siab, thiab lwm yam kev lag luam uas muaj zog thiab kev ntseeg siab yog qhov tseem ceeb.

Cov txheej txheem tsim khoom ntawm Q345D carbon steel square tube muaj ob peb kauj ruam tseem ceeb, suav nrog steelmaking, kub dov, thiab kev kho cua sov. 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. Thaum kawg, lub raj square tau txais kev kho cua sov los txhim kho nws cov khoom siv kho tshuab thiab microstructure, kom ntseeg tau tias nws ua tau raws li cov cai nruj ntawm GB / T1591-2008 tus qauv.

FAQ:

Q1: Koj puas muab cov qauv? Puas yog dawb lossis ntxiv?
A1: Yog lawm, peb tuaj yeem muab cov qauv dawb thiab cov neeg siv khoom yuav them tus nqi thauj khoom.
Q2: Yuav ua li cas yog tias kuv tsis muaj kev paub txog kev xa tawm?
A2: Peb muaj tus neeg sawv cev txhim khu kev qha uas tuaj yeem xa khoom tuaj rau koj los ntawm hiav txwv / huab cua / Qhia rau koj lub qhov rooj. Txawm li cas los xij, peb yuav pab koj xaiv qhov kev pabcuam xa khoom zoo tshaj plaws.
Q3: Koj lub sijhawm ua haujlwm ntev npaum li cas?
A3: Yog tias nws nyob hauv Tshuag, nws feem ntau yog 5-10 hnub. Los yog, yog tias tsis muaj cov khoom muag, 15 hnub, nyob ntawm seb muaj pes tsawg.
Q4: Koj cov nqe lus them nqi yog dab tsi?
A4: 30% T / T tso nyiaj ua ntej, 70% T / T tshuav nyiaj li cas ua ntej xa khoom.

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