Puas yog S355J2W steel phaj xav tau kev tiv thaiv xeb tom qab txiav? - Kev paub

S355J2W steel phaj tsis tas yuav muaj kev kho kab mob xeb (xws li, pleev xim, galvanizing) tom qab txiav, raws li nws yog qib huab cua huab cua tsim los tsim kom muaj qhov ntom ntom, nws tus kheej - kho qhov tiv thaiv patina thaum raug huab cua. Txawm li cas los xij, cov phiaj xwm tshaj tawm - txiav kev saib xyuas yog xav tau los xyuas kom meej lub patina txhim kho zoo ib yam thiab kom tsis txhob muaj kev pheej hmoo corrosion hauv zos.

info-230-223

1. Yog vim li cas ib txwm kev tiv thaiv xeb tsis tsim nyog

S355J2W muaj cov ntsiab lus alloying (Cu, Cr, Ni) uas tsav kev tsim cov hlau oxide patina ruaj khov rau ntawm qhov chaw. Tom qab txiav, cov npoo ntawm cov hlau tshiab yuav oxidize thiab sib xyaw ua ke rau hauv cov txheej txheem patina dhau sijhawm (feem ntau yog 3-6 lub hlis sab nraum zoov). Cov txheej txheem niaj hnub yuav thaiv cov txheej txheem oxidation no, ua rau cov khoom tsis muaj zog tiv thaiv corrosion thiab zoo nkauj.

info-230-221

2. Kev Tshaj Tawm Tseem Ceeb-Txoj Kev Kho Mob

Deburr thiab Smooth Cut Edges

Siv lub tshuab sib tsoo lossis ntawv xuab zeb kom tshem tawm cov burrs ntse, micro- tawg, thiab tshav kub- thaj chaw cuam tshuam (HAZ) seem ntawm qhov chaw txiav. Cov teeb meem no tuaj yeem cuam tshuam cov dej noo thiab ua rau thaj chaw pitting corrosion ua ntej lub patina matures tag nrho.Kho Patina puas (yog tias tsim nyog)

Yog hais tias tus thawj patina ntawm lub phaj nto yog khawb thaum txiav, thov aweathering steel xeb acceleratormus rau thaj chaw puas. Qhov no ua rau sai, tsis sib xws oxidation, ua kom thaj chaw kho kom zoo sib xws ntawm cov patina ib puag ncig thiab zam cov xim tsis sib haum.Tsis txhob sib cuag nrog cov hlau tsis sib xws

Tsis txhob sib dhos lossis ceev txiav S355J2W daim hlau nrog carbon steel, aluminium, lossis galvanized steel yam tsis muaj cov khoom siv insulating (xws li roj hmab, yas). Kev sib cuag ncaj qha tuaj yeem ua rau galvanic corrosion, tshwj xeeb tshaj yog nyob rau hauv qhov chaw ntub dej.Xyuas kom zoo Airflow thiab Drainage

Khaws lossis teeb tsa cov ntawv txiav hauv qhov dej - qhov cua qhov chaw uas tsis muaj dej ruaj khov. Qhov chaw kaw los yog dej nkag yuav tiv thaiv patina los ntawm kev tsim kom zoo, ua rau tsis sib xws.

info-231-221

3. Tshwj xeeb Scenario: hnyav Corrosive ib puag ncig

Rau kev txiav S355J2W daim hlau siv hauv ntug dej hiav txwv ntsev- thaj chaw tshuaj tsuag lossis thaj chaw muaj kev lag luam uas muaj cov sulfur dioxide siab, koj tuaj yeem thovbreathable anti-xeb sealantmus rau cov npoo txiav (tsis yog puv - txheej txheej). Cov sealant no thaiv cov corrosive media infiltration thaum tso cai rau patina kom loj hlob ntawm lub ntsiab nto.

info-236-222