Thaum xaiv Corten Steel rau sab nraum zoov lossis cov haujlwm ua haujlwm, Q355GNH thiab Q355NH yog ob feem ntau tsis meej pem qib-ntau tus neeg yuav khoom xav tias lawv hloov pauv tau, tsuas yog ntsib kev ua haujlwm tsis sib haum lossis tsis tsim nyog raug nqi overruns. Ob leeg ua tau raws li GB / T 4171 tus qauv, muaj kev tiv thaiv corrosion zoo heev, thiab sib qhia tib lub hauv paus lub zog, tab sis qhov sib txawv me me ntawm cov hlau alloy ua rau lawv haum rau cov xwm txheej sib txawv. Yog li, ob qib Corten Steel piv li cas, thiab qhov twg haum rau koj qhov project zoo tshaj? Raws li cov qauv khoom siv thiab kev ua lag luam, cov lus teb tseem ceeb yog qhov tseeb:Q355GNH thiab Q355NH zoo sib xws hauv lub zog yooj yim thiab kev tiv thaiv corrosion, tab sis Q355GNH tau txhim kho qis- qhov kub thiab txias- ua rau nws zoo dua rau cov cheeb tsam txias, thaum Q355NH yog tus nqi ntau dua -zoo rau qhov chaw me me. Hauv qab no yog cov lus qhia yooj yim, ua tau zoo.
Qhov Tseem Ceeb Zoo sib xws: Vim Li Cas Lawv Muaj Kev Nyuaj Siab
Q355GNH thiab Q355NH qhia cov yam ntxwv tseem ceeb uas ua rau lawv ob qho kev xaiv Corten Steel, tshwj xeeb tshaj yog siv rau sab nraum zoov:
Lub zog ntawm lub hauv paus: Ob leeg muaj qhov tsawg kawg nkaus tawm lub zog ntawm Ntau dua lossis sib npaug ntawm 355MPa ("355" hauv lawv cov qib) thiab tensile zog ntawm 490-630MPa, haum rau nruab nrab-load structural xav tau.
Corrosion Resistance: Ob qho tib si tsim kom muaj qhov ntom ntom, tiv thaiv patina (nrog Cu, Cr alloy ntsiab) uas txo qis corrosion tsawg dua lossis sib npaug li 0.03mm / xyoo-4-6 npaug zoo dua li cov pa roj carbon zoo tib yam.
Weldability & Processability: Ob leeg yog ib qho yooj yim rau weld (tshaj nrog E5015 electrodes, ER50-6 hlau) thiab daim ntawv, tsis muaj preheating xav tau rau nyias daim hlau (tsawg dua los yog sib npaug rau 16 hli).
Cov Qauv Tsim Khoom: Ob leeg ua raws li GB / T 4171, tus qauv tseem ceeb Suav rau huab cua -cov hlau tsis muaj zog[4].
Qhov txawv ntawm qhov tseem ceeb: Tsawg-Temperature Toughness
Qhov tseem ceeb tsuas yog qhov sib txawv ntawm ob qib yog nyob rau hauv qis -kev ua haujlwm kub- qhov no yog qhov Q355GNH sawv tawm, ua tsaug rau kev tsim cov hlau alloy zoo tshaj plaws (kab Ni ntxiv)[4]:
Q355GNH: Yam tsawg kawg nkaus Charpy V-qhov cuam tshuam lub zog Ntau dua lossis sib npaug ntawm 34J ntawm -20℃(qib tus qauv); xaiv tau qib siab mus txog siab dua lossis sib npaug rau 27J ntawm -40℃rau qhov txias txias. Nws tiv taus cov pob txha tawg hauv qhov chaw khov, ua rau nws zoo tagnrho rau thaj chaw txias (xws li, sab qaum teb Europe, sab qaum teb North America).
Q355NH: Yam tsawg kawg nkaus lub zog loj dua lossis sib npaug ntawm 34J ntawm 0℃(tsuas yog). Nws ua tau zoo nyob rau hauv me me kom txias txias tab sis tej zaum yuav nkig qis dua -10 degree, pheej hmoo tawg nyob rau hauv load.
Lwm yam kev sib txawv (Nqi & Muaj)
Tus nqi: Q355GNH yog 5-10% kim dua Q355NH, vim cov ntsiab lus alloy ntxiv (Ni, refined Mn) xav tau los txhim kho qhov kub thiab txias.
Availability: Q355NH is more widely stocked (common thicknesses 3-40mm) with shorter lead times, as it's used in more general outdoor projects. Q355GNH may require custom orders for thick plates (>40 mm).
Qhov twg xaiv? (Practical Selection Guide)
Muab cov qhab nia rau koj qhov project qhov chaw ib puag ncig- qhov no ua kom muaj kev ua tau zoo thiab tus nqi- ua tau zoo:
Xaiv Q355GNH Yog tias: Koj qhov project yog nyob rau hauv qis- cheeb tsam kub (-10℃rau -40℃), xws li cov ntug dej hiav txwv txias lossis cov haujlwm sab qaum teb (kev txhawb nqa choj, warehouse thav duab).
Xaiv Q355NH Yog tias: Koj qhov project yog nyob rau hauv qhov chaw txias txias (0℃thiab siab dua), xws li hauv nroog / suburban sab nraum zoov cladding, guardrails, los yog tsis yog -coj ntug hiav txwv hniav zoo nkauj qauv- qhov no txuag nqi yam tsis muaj kev cuam tshuam corrosion.
Hauv cov ntsiab lus, Q355GNH thiab Q355NH yog ob qho tib si siab - zoo Corten Steels, nrog rau qhov sib txawv tseem ceeb yog qis - kub toughness. Q355GNH ua tau zoo nyob rau hauv qhov chaw txias, thaum Q355NH muab cov nqi zoo dua -kev ua tau zoo rau cov mob me- nkag siab qhov txawv no pab koj xaiv cov qib zoo rau koj cov kev xav tau.
