Te Whakamahinga o te Paipa Kowiri tira
Ko nga putorino kowiri tira e whakamahia nuitia ana i roto i te umanga hinu me te hau mo te kawe i nga wai penei i te hinu, te hau, me nga matū pirau, i roto hoki i nga tipu matū me te petrochemical mo te kawe i nga matū me nga wai, i roto i te ahumahi kai me te inu mo te kawe wai me te hau, i roto i te ahumahi aerospace mo nga tono penei i nga punaha waka rererangi, raina wahie, me te hanganga.
Nga waahanga o te paipa kowiri tira korekore
-Austenitic Kowiri tira Paipa Tukino
Austenitic kowiri tira he austenite tona wahanga tuatahi i te teitei me te rūma pāmahana. Kei roto i te maitai hanganga austenite pūmau e pā ana ki 18% Cr, 8% ~ 10% Ni me e pā ana ki 0.1% C. Chrome-nickel austenitic kowiri tira tae atu te tino waia kowiri tira 18Cr-8Ni (TP304) me te raupapa o Cr-Ni teitei maitai whakawhanakehia e te whakanui ake Cr, ihirangi Ni me te tāpiri Mo, Cu, Si, Nb, Ti. Ko te Austenitic kowiri tira e tohuhia ana e te kore-aukume, te kirihou teitei me te ductility engari he iti ake te kaha. Ka taea anake te whakakaha ma te mahi makariri (ma te taapiri S, Ca, Se, Te me etahi atu, ka taea e te kowiri tira austenitic te machinability pai).
Koeke: 304/L/H/LN, 316/L/H/LN/Ti/LMod, 310S/H, 317/L, 321/H, 347/H/HFG,S30815
Whakatakotoranga:
ASME SA213 Whakatakotoranga mo te Puawai Korewhara me te Austenitic Alloy-Steel Boiler, Whakawera, me nga Kore Whakawhiti Wera
ASME SA312 Whakatakotoranga mo nga Paipa Kowiri tira Austenitic Korekore, Paiherea, Tino Makao
ASTM A269 Whakatakotoranga mo te Tuinga Kowiri tira Austenitic me te paiherea mo te Ratonga Whanui
EN1016-5 Ko nga ngongo rino koretake mo nga kaupapa pehanga Nga tikanga tuku Hangarau Wāhanga 5: Nga ngongo kowiri tira.
Āhuatanga:
1.Excellent waikura ātete
2.He pai mo te mahi makariri, te mahi wera ranei
3.High kirihou me te ductility
4.Optimum mahi whānui
5.He whanuitanga o nga tono
-Super Austenitic Kowiri tira paipa me te ngongo
A, no te nui atu i te rite ki te 40% ranei te uara rite o Cr-Ni austenitic austenitic parenga waikura, ka taea te kiia he kowiri tira super austenitic. Super austenitic kowiri tira te nuinga whakawhanakehia ki te whakaoti i te kohakore o pitting te waikura ātete, kapiti ātete waikura me te rawakore pūmautanga waiariki o te taketake teitei molybdenum (neke atu i te 4%) Cr-Ni austenitic kowiri tira i raro i ngā āhuatanga waikura nui kei roto katote pūhaumāota.
Kōeke: N08366,N08367,N08904（904L）, N08925,N08926,S31254
Whakatakotoranga:
ASME SA213 Whakatakotoranga mo te Puawai Korewhara me te Austenitic Alloy-Steel Boiler, Whakawera, me nga Kore Whakawhiti Wera
ASME SA312 Whakatakotoranga mo nga Paipa Kowiri tira Austenitic Korekore, Paiherea, Tino Makao
ASTM A269 Whakatakotoranga mo te Tuinga Kowiri tira Austenitic me te paiherea mo te Ratonga Whanui
ASME SB677 Whakatakotoranga mo UNS N08904, UNS N08925, me UNS N08926 Paipa Tuai me te Tube
ASME SB690 Whakatakotoranga mo te Iron-Nickel-Chromium-Molybdenum Alloys (UNS N08366 me UNS N08367) Paipa Tukino me te Tube
Āhuatanga:
1.Superior ātete ki te rua pūhaumāota, waikura kapiti i roto i te taiao pukuriri
2.Ko nga taonga miihini pai me te kaha o te hua
3.Excellent machinability
-Duplex Stainless Steel Seamless Paipa me te Tube
Duplex Stainless Steel (DSS, poto mo Duplex Stainless Steel), e pā ana ki te ferrite me te austenite ia pūkete mo e pā ana ki 50%, te ihirangi o te whānui ko te ahua taitamariki me hoki ki te whakatutuki i te iti rawa 30% o te Kowiri tira. Kei te whakauruhia ki te 18% -28% Cr me te 3% -10% Ni i roto i te ahua o te iti o te C, Ko etahi o nga tira kei roto ano hoki nga huinga huinga penei i te Mo, Cu, Nb, Ti me N, etc.
Ina teitei ake i te 40% te parenga pitting o te kowiri tira matarua (PREN=[Cr]+3.3[Mo]+16[N]), ka taea te kii he kowiri tira super duplex.
Ko te tira kowiri rua (DSS) e whakaatuhia ana me te hanganga o nga waahanga e rua (α me te γ) me nga ahuatanga o te kowiri tira ferritic me te austenitic. He pai te waikura me te kaha teitei. Kei te whakauru ki te 18% -28% Cr me te 3% -10% Ni i roto i te ahua o te iti C. Ko etahi o nga tira kei roto ano hoki nga huinga huinga penei i te Mo, Cu, Nb, Ti me N, etc.
Ki te whakatairite ki te kowiri tira, he kowiri tira matarua he kirihou teitei ake, he ngawari me te pai ake o te parenga waikura intergranular me te weldability. He rite tonu te 475 ℃ te pakarutanga me te kowiri tira me te kawe wera nui. Ko te Duplex kua pai ake te kaha tuku, te aukati ki te waikura intergranular, te waikura ahotea, te ngenge o te waikura me te abrasion me te waikura ka whakaritea ki te kowiri tira austenitic.
Koeke: S31500,S31803,S32205,S32304,S32750,S32760
Whakatakotoranga:
ASME SA789 Whakatakotoranga mo te Kowiri tira Ferritic/Austenitic Kowiri tira mo te Ratonga Whanui
ASME SA790 Whakatakotoranga mo te paipa me te paiherea Ferritic/Austenitic kowiri tira paipa
GB/T 21833-2008 Austenitic-Ferritic (ruarua) karaehe kowiri tira ngongo tuitui me nga putorino
EN1016-5 Ko nga ngongo rino koretake mo nga kaupapa pehanga Nga tikanga tuku Hangarau Wāhanga 5: Nga ngongo kowiri tira.
Āhuatanga :
1. He pai ake te atete ki te waikura whanui me te rohe, ina koa ki te whakapouri i te waikura, te waikura poka, te waikura kapiti, te ngoikore o te waikura me te abrasion & te waikura.
2.Weldability pai
3.Nga taonga miihini pai
4.Excellent intergranular parenga waikura
5.High utu-whai hua, te wa roa
-Ferritic Kowiri tira Pupa Tuaro me te Tube
Ferritic kowiri tira (400) o te ihirangi chromium i roto i te 15% ~ 30%, ki te tinana pūtoru hanganga karaihe pūtoru. Ko te tikanga e kore e roto i te nickel, i etahi wa kei roto hoki te iti o Mo, Ti, Nb, penei i tenei momo maitai he nui te kawe waiariki, te whakareatanga iti o te whakarea, te pai o te waikura, te pai o te aukati ki te waikura ahotea, me etahi atu. Ferritic kowiri tira he whānui tono whānui, pai mahi matawhānui, ko te wāhanga tino nui o te nickel kowiri.
Ko te kowiri tira Ferritic he momo koranu chromium he hanganga ferritic i te teitei me te pāmahana rūma me nga hanganga karaihe kohanga-a-tinana. He hanganga matū kei roto ko C≤0.02% me te Cr 10.5%~32% kaore e taea te whakapakeke i te maimoatanga wera. Ka whakamahia te kowiri tira Ferritic i roto i nga tono matawhānui me nga taonga whanui tino pai, a ka tangohia hei ahua o nga tira kowiri tira tuatahi.
Koeke: 409, 410,439, 444
Whakatakotoranga:
ASME SA213 Whakatakotoranga mo te Puawai Korewhara me te Austenitic Alloy-Steel Boiler, Whakawera, me nga Kore Whakawhiti Wera
ASME SA731 Whakatakotoranga mo te Kowiri tira, Paiherea Ferritic, me Martensitic Kowiri tira Paipa
Āhuatanga:
1.High kawe werawera
2.Low whakarea roha
3.Good taonga antioxidant
4.Excellent ahotea waikura ātete
Te Tukatuka Hangahanga o te Paipa Kowiri Tiaki
