Ọtụtụ ndị mmadụ na-eche na igwe anaghị agba nchara bụ ihe igwe anaghị agba nchara ma bụrụ acid na alkali na-eguzogide.Mana na ndụ kwa ụbọchị, ndị mmadụ na-achọpụta na ite igwe anaghị agba nchara na kettle eletrik e ji esi nri na-enwekarị ntụpọ nchara ma ọ bụ nchara.Gịnị kpọmkwem na-eme?
Ka anyị buru ụzọ ghọta, gịnị bụ igwe anaghị agba nchara?
Dị ka ọkọlọtọ mba GB/T20878-2007 "Stainless Steel and Heat-Resistant Steel Grades and Chemical Compositions", nkọwa nke igwe anaghị agba nchara bụ: igwe anaghị agba nchara na corrosion iguzogide dị ka isi àgwà, na a chromium ọdịnaya nke dịkarịa ala 10,5% na ọdịnaya carbon nke na-erughị 1.2%.ígwè.A na-akpọ ụdị ndị na-eguzogide ọgwụ corrosion media (acid, alkali, nnu, wdg) nchara na-eguzogide acid.
Ya mere, gịnị mere igwe anaghị agba nchara na-eguzogide corrosion?
N'ihi na igwe anaghị agba nchara, mgbe emechara, ga-enweta pickling na passivation zuru oke iji wepụ ụdị mmanụ niile, nchara na unyi ndị ọzọ n'elu.N'elu ga-aghọ edo ọlaọcha, na-akpụ a edo na ok passivation film, si otú mbenata nguzogide nke igwe anaghị agba nchara ka oxidizing media.Ọnụọgụ corrosion dị ọkara yana nguzogide corrosion ka mma.
Ya mere, na ihe nkiri passivation dị otú ahụ na igwe anaghị agba nchara, ọ ga-abụrịrị nchara?
N'ezie, na ndụ anyị kwa ụbọchị, ion chloride dị na nnu nwere mmetụta na-emebi ihe na ihe nkiri igwe anaghị agba nchara, nke nwere ike ime ka mmiri ozuzo nke ihe ígwè dị.
Ugbu a, n'usoro iwu, enwere ụdị mmebi abụọ nke ihe nkiri passivation nke ion chlorine kpatara:
1. Usoro ihe nkiri nke usoro: ion chloride nwere obere radius na ike ntinye ike.Ha nwere ike banye ngwa ngwa banye obere oghere dị na fim oxide, rute n'elu igwe, wee soro igwe na-emekọ ihe iji mepụta ogige soluble, nke na-agbanwe nhazi nke ihe nkiri oxide.
2. Echiche adsorption: ion chloride nwere ikike siri ike nke ọla na-agbakọta ya.Enwere ike iji ọla mee ya nke ọma ma chụpụ oxygen n'elu igwe.Chloride ion na oxygen ion na-asọ mpi maka ihe mgbasa ozi n'elu igwe ma na-emepụta chloride na metal;Mgbasa ozi nke chloride na metal anaghị eguzosi ike, na-emepụta ihe na-edozi ahụ, nke na-eduga n'ịgbaziwanye corrosion.
Maka nyocha igwe anaghị agba nchara:
A na-ekewa nyocha igwe anaghị agba nchara n'ime ule arụmọrụ isii na ọrụ nyocha abụọ
Nnwale arụmọrụ:
Njirimara anụ ahụ, akụrụngwa kemịkalụ, akụrụngwa akụrụngwa, ikike nhazi, nyocha metallographic na nyocha na-adịghị emebi emebi.
Ọrụ nyocha:
Nyocha nke mgbaji, nyocha corrosion, wdg;
Na mgbakwunye na ụkpụrụ eji amata GB/T20878-2007 "Stainless Steel and Heat-Resistant Steel Grades and Chemical Compositions", enwerekwa:
GB/T 13305
GB/T 13671
GB/T 19228.1, GB/T 19228.2, GB/T 19228.3
GB/T 20878 igwe anaghị agba nchara na okpomọkụ na-eguzogide nchara akara ule na chemical mejupụtara
Ụkpụrụ mba maka nyocha igwe anaghị agba nchara nri bụ GB9684-2011 (ngwaahịa igwe anaghị agba nchara).A na-ekewa nyocha nke igwe anaghị agba nchara nri n'ime akụkụ abụọ: isi ihe na ihe ndị na-abụghị isi.
Otu esi arụ ọrụ:
1. Akara: Nnwale igwe anaghị agba nchara na-achọ akara njedebe nke ihe nlele na agba nke agba dị iche iche.
2. Mbipụta: Usoro nke ịgbasa eserese na akụkụ (njedebe, ihu njedebe) akọwapụtara na nyocha, na-egosi ọkwa, ọkọlọtọ, nkọwa, wdg nke ihe.
3. Tag: Mgbe emechara nyocha ahụ, a ga-etinye ihe ahụ n'ime ngwugwu, igbe, na osisi iji gosi ọkwa ya, nha, ịdị arọ, nọmba ọkọlọtọ, onye na-ebubata ya, wdg.
Oge nzipu: Dec-27-2023