Cov yam ntxwv uas cuam tshuam rau kev tsim tus nqi ntawm cov txheej txheem patina ntawm SPA-H weathering steel
Qhov tsim ceev ntawm qhov ruaj khov, ntom ntom patina nyob ntawm qhov chaw ib puag ncig, cov khoom muaj pes tsawg leeg, qhov chaw nyob, thiab cov qauv tsim. Cov yam tseem ceeb muaj xws li:
Atmospheric humidity thiab nag
Cov av noo nruab nrab (60-80%) thiab cov voj voog ntub-qhuav kom nrawm nrawm tsim patina. High humidity txhawb oxidation nto, thaum lub sij hawm ziab yuav pab densify oxide txheej. Qhuav, arid climates qeeb cov tshuaj tiv thaiv.
Kub thiab solar exposure
Ua kom sov, me ntsis kub (10-30 degree) ua kom muaj tshuaj lom neeg ntawm cov hlau nto thiab huab cua / noo. Muaj zog UV hluav taws xob thiab lub hnub ci txaus pab oxidize thiab ruaj khov patina. Tsis tshua muaj kub los yog kub heev txo cov tshuaj tiv thaiv thiab ncua sij hawm tag nrho patina tsim.
Atmospheric muaj pes tsawg leeg (pollutants thiab ntsev tsuag)
Cov qib me me ntawm cov khoom muaj kuab paug (SO₂, plua plav) tuaj yeem ua kom oxidation ntxov thiab patina maturation. Tsawg-concentration ntsev tsuag (me me ntug dej hiav txwv cheeb tsam) txhawb kev tsim patina sai. Txawm li cas los xij,ntsev ntau dhau los yog hnyav acid kuab paugua rau tsis sib xws, xoob xeb es tsis txhob ruaj khov patina.
Deg mob ua ntej raug
Ntxuav, nplai-dawb qhov chaw (xws li, tom qab Sa2.5 moj tej tawg tu) tsim patina sai dua zeb-scale los yog oily nto. Rough, zoo profiled nto txhim kho oxide adhesion thiab ua kom muaj kev tiv thaiv zoo ib yam. Cov kab mob sib kis (roj, roj, plua plav) thaiv kev sib cuag ntawm cov hlau thiab cua, qeeb patina kev loj hlob.
Qhov cua thiab tso dej
Qhov cua zoo thiab cov dej tsis muaj dej tiv thaiv tsis tu ncua ntub dej thiab ua kom cov oxidation zoo ib yam. Cov dej ntub dej, qhov chaw ntxoov ntxoo, los yog qhov khoob khoob khoob ua rau qeeb, tsis sib xws patina los yog pheej xoob xoob.
Alloy cov ntsiab lus thiab cov khoom sib xws
SPA-H cov qib tswj ntawm Cu, Cr, Ni, thiab P ncaj qha txiav txim siab sai npaum li cas cov ntaub ntawv patina tuab. Kev sib raug zoo chemistry ua kom zoo ib yam thiab kwv yees kev txhim kho patina thoob plaws qhov chaw.
Kev taw qhia kev pom thiab chaw nyob
Tag nrho nthuav tawm, ntsug nto tsim patina ceev tshaj plaws thiab feem ntau sib npaug.
Kab rov tav, sheltered, lossis feem ntau ntxoov ntxoo qhov chaw tsim patina qeeb qeeb thiab tsis sib xws.
