Letlapa le duplex le boreleli le bolela ntho eo likokoana-hloko tsa eona li entsoe ka mouoane le nako, e 'ngoe le e' ngoe ea chelete e ka bang 50%. Ha e sebelisoa, e loketse haholo ho e 'ngoe ea mekhahlelo e pakeng tsa 40-60%.
Ho latela litšobotsi tsa sebopeho sa mekhahlelo e 'meli, ka ho jala sebopeho sa lik'hemik'hale, le ho lekanngoa le chorurate ea moea o mongata, ho etsa hore ho be le letsoalo le boreleli Tšebeliso ea tšepe e kopanyang khanyetso e mpe ea lijalo, matla a phahameng le ts'ebetso e bonolo le tlhahiso. Metsi a bona ea 'mele oa nama ke pakeng tsa tšepe le tšepe e se nang mabele, empa u be haufi le tšepe e seng molaong le tšepe ea khabone. Ho hanyetsa le ho ts'oaroa ha chloride le Clovice ke tšepe e lerootho ho amana le litaba tsa chromium, molybegen le naetbejene. Its resistance to pitting and crevice corrosion can be similar to that of 316 stainless steel, or higher than that of stainless steel for seawater, such as 6%MO austenitic stainless steel. All duplex stainless steels are significantly more resistant to chloride stress corrosion cracking than 300 series austenitic stainless steels, and their strength is also much higher than austenitic stainless steels, while showing good plasticity and toughness.
Mefuta e fapa-fapaneng ea sehlahisoa sa tšepe e boreleli: Liplate le li-pipeps tsa peipi le li-pipes tse se nang letho
Letlapa le duplex le boreleli ka kakaretso le ka aroloa ka mekhahlelo e mene:
E le 'ngoe: Mobu o tlase oa alloy o sa lefelloeng, tšepe ha e na molybenem, pren: 24-25, e ka nka sebaka sa khanyetso ea khatello ea maikutlo.
Tse peli: Mobu o bohareng oa allores, o sa sebetseng, o pele: 32-33, ho hanyetsa kharale ho pakeng tsa Aisi316L le 6% Mo + n + n aus tiintic steins.
Boraro: Mofuta o phahameng oa alloy, hape o na le koporo le naetrose, Pren:
Bane: Mofuta oa tšepe o tukang o tukang, o nang le monko o phahameng le naetrojene. seaele sa ausnitic. (Tlhokomeliso: Pren: Preseteble boleng bo lekanang)
Khetho ea lik'hemik'hale e na le likarolo tse ka sehloohong tsa lifofane tsa Duplex ea Duplex e leng Mon, Mon, Mon, K. Har'a bona, Tr li sebelisoa ho eketsa dikahare tse seng tsa 'nete Lihlahisoa tse ling tsa tšepe le tsona li na le lintho tse kang MN, CR, CR, Cr, NI, LE W., LE MO KOLOTSO. Ho hanyetsa ha eona ho PLING LE CORVICE Corronion e ntle haholo libakeng tse nang le chloride-e nang le thepa.
Melemo ea tšepe e sa tsitsang
1. Ha e bapisoa le tšepe ea leoatle e se nang mabele
1) Matla a fanang ka chaike a le habeli ho feta feela tšepe e sa tloaelehang ea ausnitic e sa tloaelehang, 'me e hlokahala polasetiki e lekaneng ebile e hlokahala bakeng sa ho theha. Boghnes ea litanka tsa polokelo kapa likepe tsa khatello tse entsoeng ka tšepe e lerootho e se nang letsoai ke 30-50% e ka tlase ho litlolo tse tloaelehileng tsa ho fokotsa litšenyehelo tsa ho fokotsa litšenyehelo.
2) E na le khanyetso e ntle haholo ho khatello ea maikutlo ea khatello ea maikutlo e hlahang, haholo-holo maemong a nang le liqhomane tse nang le chloride Is. Le tšepe e lerootho e se nang mabele e nang le litaba tse tlase tse nang le lifofane e na le khatello e phahameng ea khatello ea maikutlo ho feta tšepe e se nang mabili. Khatello ea maikutlo ke bothata bo hlahelletseng boo tšepe e tloaelehileng ea Ausnitic e sa tloaelehang e leng thata ho e rarolla. 3) The corrosion resistance of the most common 2205 duplex stainless steel used in many media is better than that of ordinary 316L austenitic stainless steel, and super duplex stainless steel has extremely high corrosion resistance. In some media, such as acetic acid and formic acid, it can even replace high-alloy austenitic stainless steel and even corrosion-resistant alloys. 4) E na le khanyetso e ntle ea naha ea lehae. Compared with austenitic stainless steel with the same alloy content, its wear corrosion resistance and corrosion fatigue resistance are better than austenitic stainless steel. 5) The linear expansion coefficient is lower than that of austenitic stainless steel, close to that of carbon steel, suitable for connection with carbon steel, and has important engineering significance, such as the production of composite plates or linings.
2. Ha e bapisoa le tšepe e se nang mabele, melemo ea tšepe e telele e se nang mabele e tjena:
1) Litlamorao tse lumellanang le tsona li phahame ho feta tsa tšepe e se nang mabele, haholo-holo ho ba thata. Ha e amehe ho bolotsana e le tšepe e se nang mabele.
2) Ntle le ha khatello ea maikutlo ea khatello ea maikutlo, khanyetso e ngoe ea ho loantšana e molemo ho feta tšepe e se nang majoe.
3) Ts'ebetso e batang ea ho sebetsa le ts'ebetso e batang e ntle haholo ho feta tšepe e se nang mabele.
4) Ts'ebetso ea welding e ntle haholo ho feta tšepe e se nang mabele. Ka kakaretso, ha ho na ntho e utloang e hlokahala pele e teneha, 'me ha ho na phekolo ea mocheso e hlokahalang kamora ho bopa.
5) Bohareng ba kopo ke ho pharalla ho feta sa tšepe e se nang mabele.
Kopo
Due to the high strength of duplex steel, it can often save materials, such as reducing the wall thickness of the pipe. Take SAF2205 and SAF2507W as examples. SAF2205 is suitable for use in chlorine-containing environments. This material is suitable for oil refining or other process media mixed with chlorides. SAF2205 is particularly suitable for heat exchangers that use chlorine-containing aqueous solutions or slightly salty water as cooling media. This material is also suitable for diluted sulfuric acid solutions and pure organic acids and their mixtures. Mohlala: Ka mohlala oa oli ka indasteri ea oli le ea khase: Ho tlola oli ea oli e sa reroang. cooling systems using slightly salty water or chlorine-containing solutions.
Poso: Hlakubele-05-2025