Thaum xaiv Q355NH Corten Steel rau cov haujlwm, ntau tus engineers thiab cov neeg yuav khoom tsuas yog tsom rau nws cov huab cua tiv thaiv, saib xyuas lwm yam khoom tseem ceeb uas txiav txim siab nws qhov haum. Kev nkag siab txog txhua yam tseem ceeb ntawm Q355NH yog qhov tseem ceeb rau kev sib piv nws rau koj qhov project load, ib puag ncig, thiab kev xav tau kev tsim khoom. Yog li, dab tsi yog cov yam ntxwv tseem ceeb uas txhais tau tias Q355NH thiab ua rau nws yog qhov kev xaiv nrov rau sab nraum zoov thiab cov haujlwm ua haujlwm? Raws li GB / T 4171 tus qauv thiab cov khoom siv kuaj, cov lus teb tseem ceeb yog qhov tseeb:Q355NH cov khoom tseem ceeb suav nrog huab cua tsis zoo, nruab nrab- siab zog, zoo weldability / formability, thiab txhim khu kev qha qis- kub toughness- txhua qhov sib npaug kom tau raws li qhov xav tau ntawm qhov project.. Hauv qab no yog cov lus qhia yooj yim, ua tau zoo.
1. Huab cua Resistance (Core Trait of Q355NH Corten Steel)
Raws li Corten Steel, huab cua tsis kam yog Q355NH cov cuab yeej tshwj xeeb tshaj plaws, teeb nws sib nrug los ntawm cov pa roj carbon zoo tib yam:
Mechanism: Nws muaj cov kab Cu, Cr, thiab Ni cov ntsiab lus uas hnov mob nrog oxygen, noo noo, thiab huab cua los ua ib qho ntom ntom, adherent patina (tiv thaiv xeb txheej) hauv 6-12 lub hlis.
Kev Ua Tau Zoo: Lub patina txo qis corrosion tsawg dua lossis sib npaug li 0.03mm / xyoo, 3-5 npaug ntau dua corrosion-resistant dua li cov hlau zoo tib yam. Tsis tas li yuav tsum tau pleev xim los yog tu kom zoo rau kev siv sab nraum zoov.
Ib puag ncig tsim nyog: Zoo tagnrho rau me me- rau- ib puag ncig corrosive nruab nrab (lub nroog, suburban, ntug hiav txwv dej nrog lub teeb ntsev tsuag).
2. Nruab nrab-High Strength (Mechanical Core)
Q355NH lub zog ua rau nws haum rau lub teeb - mus rau - nruab nrab load-cov qauv kev coj tus kheej, ntsuas qhov ntev thiab tus nqi:
Cov Metric tseem ceeb (GB/T 4171): Yam tsawg kawg nkaus yield zog Ntau dua los yog sib npaug rau 355MPa, tensile zog 490-630MPa (tus "355" nyob rau hauv nws qib yog hais txog yield zog).
Tus nqi tsim nyog: Muaj zog txaus rau cov khoom siv hauv vaj tse (txoj kev txhawb nqa, warehouse thav duab, guardrails) tab sis tsis hnyav dhau, txo cov nqi tsheb thauj mus los thiab kev tsim khoom.
3. Weldability & Formability (Yooj yim rau Fabricate)
Tsis zoo li siab - lub zog steels uas nyuaj rau txheej txheem, Q355NH tswj kev ua tau zoo, tsim nyog rau ntawm - qhov chaw tsim khoom:
Weldability: Compatible with all common welding processes (SMAW, GMAW, TIG). Only thick plates (>16mm) xav tau me me preheating (80-120 degree) kom tsis txhob tawg.
Formability: Zoo ductility tso cai rau khoov, dov, thiab shearing yam tsis muaj pob txha tawg. Khoov vojvoog Ntau dua los yog sib npaug rau 3 × phaj tuab yog pom zoo kom tau txais txiaj ntsig zoo tshaj plaws.
4. Tsawg-Tsub Toughness (Tshwj xeeb nyob rau hauv huab cua txias)
Q355NH lub toughness ua kom nws ua tau zoo nyob rau hauv qhov chaw txias, tsis txhob nkig tsis ua hauj lwm:
Yam yuav tsum tau muaj: Yam tsawg kawg nkaus Charpy V-notch cuam tshuam lub zog Ntau dua lossis sib npaug rau 40J ntawm 0℃; xaiv tau Ntau dua lossis sib npaug rau 34J ntawm -20℃rau cov haujlwm kub qis.
Kev siv tswv yim: Haum rau cov cheeb tsam uas muaj lub caij ntuj no txias (xws li, Central Europe, North America) tsis muaj kev pheej hmoo ntawm kev tawg thaum huab cua txias.
Cov Khoom Tseem Ceeb Cov ntsiab lus tseem ceeb rau kev xaiv tswv yim
Cov khoom no ua hauj lwm ua ke los ua Q355NH ntau yam - ntawm no yog yuav ua li cas rau leverage lawv:
Ua ntej nws rau cov haujlwm sab nraum zoov xav tau ob qho tib si lub zog thiab huab cua tsis kam (tsis muaj kev saib xyuas tsis tu ncua).
Siv nws rau kev thauj khoom-cov kabmob uas Q295NH tsis muaj zog, tab sis siab - lub zog steel yog kim heev.
Nco tseg: Tsis txhob muaj qhov hnyav corrosive ib puag ncig (hnyav cov chaw lag luam nrog cov chemical fumes) yam tsis muaj txheej txheej ntxiv.
Hauv cov ntsiab lus, Q355NH Corten Steel cov yam ntxwv tseem ceeb- huab cua tsis kam, nruab nrab- lub zog siab, kev ua haujlwm zoo, thiab qis- kub toughness- ua rau nws muaj kev sib npaug, muaj txiaj ntsig zoo rau feem ntau sab nraum zoov thiab lub teeb ua haujlwm. Kev nkag siab txog cov yam ntxwv no yuav pab koj xaiv cov khoom tsim nyog thiab ua kom nws ua tau zoo.
