Dab tsi yog qhov kub siab tshaj plaws uas Q235B kauv welded yeeb nkab tuaj yeem tiv taus?
Q235B kauv welded yeeb nkabtuaj yeem tiv taus ntev -lub sij hawm kub ntawm kwv yees li 400-450 degree, thiab lub sij hawm luv luv siab siab txog 480℃. Tshaj qhov ntsuas kub no yuav ua rau muaj kev nkag siab hnyav thiab oxidation, yog li txo lub zog.
Dab tsi los tiv thaiv - kev kho corrosion feem ntau yog siv rau Q235B kauv welded yeeb nkab?
Common anti-kev kho corrosion rauQ235B kauv welded yeeb nkabsuav nrog cov txheej txheem sab nraud xws li epoxy resin (xws li fusion-bonded epoxy lossis FBE) thiab polyethylene (PE), nrog rau kub -dip galvanizing. Lwm cov kev xaiv muaj xws li polyurethane coatings, IPN8710 thiab epoxy thee tar, thiab cathodic tiv thaiv rau faus los yog underwater pipelines.
Dab tsi yog qhov sib txawv tseem ceeb ntawm kauv welded yeeb nkab thiab ncaj seam welded yeeb nkab?
Qhov sib txawv tseem ceeb nyob rau hauv cov kev taw qhia weld: ncaj seam welded yeeb nkab muaj tsuas yog ib tug longitudinal weld, thaum lub weld ntawm kauv welded yeeb nkab yog kauv -zoo li tus, encircling lub yeeb nkab lub cev.
Dab tsi yog cov khoom weldability ntawm Q235B khoom?
Q235Bcov khoom siv, vim nws cov ntsiab lus tsis tshua muaj carbon (qis dua 0.25%), nthuav dav weldability zoo heev thiab yog li ntawd feem ntau siv hauv cov qauv welded xws li txuas hniav thiab cov tsev. Nws feem ntau yuav tsum tsis muaj qhov tshwj xeeb ua ntej - lossis tshaj tawm -weld kev kho cua sov kom ua tiav siab- cov pob qij txha zoo thiab muaj cov kab nrib pleb zoo. Nws zoo plasticity, toughness, thiab dav yas deformation kub ntau ntxiv txhim khu nws superior weldability.
Yuav ua li cas yooj yim txiav txim qhov zoo ntawm Q235B kauv welded yeeb nkab los ntawm tsos?
Los txiav txim qhov zoo ntawmQ235B kauv welded yeeb nkablos ntawm qhov tsos, xyuas seb nws qhov chaw du thiab zoo li cas, tsis muaj qhov pom tseeb protrusions, tawg, los yog deformation, tshwj xeeb tshaj yog nyob ib ncig ntawm cov welded seam. High-welded yeeb nkab zoo yuav tsum muaj qhov zoo nkauj thiab sib luag - ntu, huv si thiab nkig kawg txiav, thiab cov vuam nws tus kheej yuav tsum sib xws thiab sib xyaw ua ke nrog cov yeeb nkab phab ntsa.
