As tingting bilong 'salt spray' tes long 'pre-coated steel em long skelim 'corrosion resistance' na 'protective capabilities' bilong 'coating' na 'substrate' bilong en insait long wanpela 'simulated marine atmospheric environment'.
Ol bikpela as tingting em:
Simulated Corrosion Environment: Salt spray testing i kamapim wanpela hariap, hai-humiditi, hai-solt envairomen, na i soim ol korosen kondisen we inap kamap long ol ples klostu long nambis o indastrial envairomen.
Accelerated Aging Testing: Lukluk long ol samting we i save kamap long ol samting we i save kisim planti mun o planti yia long kamap insait long sotpela taim (olsem, sampela de o wik) dispela i save sevim taim na kos.
Pefomens Komparisen na Kwaliti Kontrol:** Skelim korosen resistens bilong ol narapela narapela koting sistem, saplaia, o prodaksen betj i helpim long makim gutpela samting na mekim kwaliti bilong prodak i inapim ol standet rikwaemen.
Failure Mode Analysis:** Lukluk long ples (olsem, ol makmak, arere, pes) na fom (olsem, ol sua, skin, ros) bilong korosen i helpim long skelim ol as bilong feil bilong 'coating' na stretim ol proses o fomulasen.
Prodak Standet Kompliens Verifikasen:** Verifikasen sapos prodak i inapim ol spesifik indastri standet o kastoma-rekwair korosen resistens laip indiketa.
Salt spray testing bilong pre-coated steel i save makim ol intanesenel o nesenel standet (olsem ASTM B117, GB/T 10125, o ISO 9227, na ol narapela), na yusim nambawan 'neutral salt spray test' (NSS) rot. Ol spesifik step na ol samting yu mas mekim em olsem:
1. Redi long tes
Wok bilong redim ol samting: Katim ol samting bilong ol 'specimen' we ol i makim long 'steel sheet' we ol i bin kotim pinis. Sapos i no gat narapela toksave insait long standet, ol i mas skrapim pes bilong spesimen (skrapim i mas go insait long koting i go long sabstret) long skelim strong bilong koting long korosen propagesen long arere we i bagarap.
Klinim Spesimen: Pastaim long tes, ol i mas klinim gut pes bilong spesimen bihainim rot we standet i makim long rausim oil na ol pipia, tasol ol i mas lukaut gut long abrusim bagarapim koting.
Redim Sol Solusen: Redim 5% (mas pesen) sol solusen yusim sodium klorait (NaCl) na wara we i no gat aion long en.
pH veliu bilong solusen i mas stap namel long 6.5 na 7.2, na skelim long 35 digri.
Redim ol samting: Mekim gut olsem 'salt spray test chamber' (sol sprei bokis) i wok gut, wantaim ol samting yu ken bosim olsem tempereja, humiditi, sprei volium, na koleksen reit.
2. Test Prosedur:
Putim sampela: Putim sampela insait long rum bilong tes wantaim pes bilong tes i lukluk i go antap long wanpela angle bilong 15 digri i go inap 30 digri long vertikal. Noken bungim ol sempel na namel long sempel na bodi bilong rum bilong mekim sol i ken go daun long olgeta hap.
Seting Kondisen:
Tempereja insait long rum bilong tes i mas stap long 35 digri ± 2 digri.
Presa bilong sprei i mas stap namel long 70 kPa na 170 kPa.
Sol sprei koleksen reit i mas stap namel long 1.0 na 2.0 mL/80cm2/h.
Spreim oltaim: Statim ol ikwipmen na wok long spreim sol solusen oltaim long pulapim rum wantaim wankain sol sprei atmosfera.
Test Cycle: Ol i save makim taim bilong tes bihainim ol standet bilong prodak o ol agrimen namel long saplaia na baia. Ol taim bilong kisim piksa em 240 aua, 480 aua, na 1440 aua tu. Ol i no ken stopim dispela tes, tasol ol i mas mekim sotpela sekim o kisim bek marasin.
3. Skelim ol samting i kamap
Pinisim Tes: Bihain long taim yu makim pinis, rausim sempel.
Klinim sampela: Larim sampela i drai insait long haus inap 0.5 i go inap 1 aua, na bihain wasim isi isi olgeta sol i stap yet wantaim klinpela wara we i no ken winim 40 digri, na draim wantaim win we i gat presa.
Lukluk na Reting: Kwiktaim mekim wanpela lukluk inspeksen bilong sempel long skelim mak bilong korosen, olsem ros, blistering, peeling, krek, na korosen i go long ol mak. Ol i save givim mak long ol standet olsem ISO 4628 series.
Rekodim na Ripot: Rekodim olgeta lukluk, ol tes kondisen, na ol paramita, na painimaut sapos korosen resistens bilong kala-kotim ain i kwalifait bihainim ol standet we i stret.
