Dachang ukuthengiswa kwamapayipi ensimbi engenasici angu-304L
I-American Iron and Steel Institute isebenzisa amadijithi amathathu ukumaka amazinga ahlukahlukene
I-Quasi ithambile. Okukhona:
① Insimbi engagqwali ye-Austenitic iboniswa ngezinombolo zama-200 no-300 uchungechunge,
②Izinsimbi ezingenasici ze-Ferritic ne-martensitic zimelelwa izinombolo zochungechunge ezingu-400. Isibonelo, ezinye zezinsimbi ezingenasici ze-austenitic ezivame kakhulu
Imakwe ku-201, 304L, 316 kanye no-310,
③ Insimbi engagqwali yeFerritic imakwe ngo-430 no-446, kanti insimbi engagqwali ye-martensitic imakwe ngo-410, 420 no-440C.
Qaphela, i-duplex (i-austenite ferrite),
④ Insimbi engagqwali, imvula eqinisa insimbi engagqwali kanye nengxubevange ephezulu enokuqukethwe kwensimbi okungaphansi kuka-50% ngokuvamile kusebenzisa igama lelungelo lobunikazi noma igama lokuhweba.
① Izimpawu zezakhi zamakhemikhali zamazwe ngamazwe nezimpawu zezwe zisetshenziselwa ukumela ukwakheka kwamakhemikhali, futhi izinhlamvu zesi-Arabhu zisetshenziselwa ukumelela ingxenye yokuqukethwe:
Isibonelo: i-China, i-Russia 12CrNi3A
②Sebenzisa izinombolo zedijithi engaguquki ukumela uchungechunge lwensimbi noma izinombolo; Ngokwesibonelo, e-United States, Japan, 300 uchungechunge, 400 uchungechunge kanye 200 uchungechunge.
③ Inombolo ye-serial yenziwe ngezinhlamvu zesiLatini nokuhleleka, okubonisa kuphela inhloso.
Isicelo, i-Chinese Pinyin, insimbi evulekile yeziko: P, insimbi ebilayo: F, insimbi ebulewe: B, isigaba sensimbi: A, T8: te8
GCr15: Ibhola
◆ insimbi eboshiwe nensimbi yasentwasahlobo, njenge-20CrMnTi 60simn, (Okuqukethwe kwe-C kuvezwa ngezinkulungwane eziyishumi)
◆ insimbi engagqwali nensimbi yensimbi yengxubevange (okuqukethwe C kuvezwa ngezinkulungwane), njengenkulungwane engu-1 ye-1Cr18Ni9 (okungukuthi
0.1% C), i-stainless C ≤ 0.08%, njenge-0Cr18Ni9, i-ultra-low carbon C ≤ 0.03%, njenge-0cr17ni13mo
Isisindo imitha ngayinye engu-304L ipayipi lensimbi engagqwali = ububanzi bangaphandle - ukujiya kodonga x ukujiya kodonga x0.02491
Okuqukethwe kwe-elementi engu-304L yepayipi yensimbi engagqwali c ≤ 0.03, ni8.00 ~ 12.00, cr18.00 ~ 20.00, Mn < = 2.0, Si < = 1.0, s < = 0.030, P < = 0.035.
Ipayipi lensimbi engagqwali engu-304L 18cr-8ni-low carbon njengensimbi ye-Low-C 304, ukumelana kwayo nokugqwala kufana nensimbi engu-304 ngokuvamile, kodwa ukumelana nokugqwala komngcele wokusanhlamvu kuhle kakhulu ngemva kokushisela noma ukukhululeka kwengcindezi; Ingakwazi futhi ukugcina ukumelana nokugqwala okuhle ngaphandle kokwelashwa kokushisa, futhi izinga lokushisa lesevisi lingu-196 ℃ ~ 800 ℃. Isetshenziswa emishinini yangaphandle embonini yamakhemikhali, amalahle kanye ne-petroleum enezidingo eziphezulu zokumelana nokugqwala komngcele wokusanhlamvu, izingxenye ezimelana nokushisa zezinto zokwakha kanye nezingxenye ezinobunzima ekwelapheni ukushisa.
Inhloso: ikakhulukazi esetshenziselwa ubunjiniyela bamanzi okuphuza kanye nokunye ukuthuthwa kwamanzi anezidingo eziphezulu
Izici eziyinhloko: impilo ende yesevisi; Izinga lokuhluleka okuphansi kanye nezinga lokuvuza kwamanzi; Izinga lamanzi elidlulisayo lihle, futhi azikho izinto eziyingozi ezizongena emanzini; Udonga lwangaphakathi lwepayipi lubushelelezi futhi lunokumelana okuphansi kokuhambisa amanzi; Ukusebenza kwezindleko eziphezulu, impilo yesevisi kuze kufike eminyakeni eyi-100, akukho sondlo kanye nezindleko eziphansi; Ingakwazi ukumelana nokuguguleka kwezinga eliphezulu lokugeleza kwamanzi okungaphezu kwama-30m/S; Ukubekwa kwamapayipi obala nokubukeka okuhle.
Ukusetshenziswa: imboni yobisi nokudla, imboni yezemithi, izimboni ezinezidingo ezikhethekile zangaphakathi zangaphakathi.
Izici zenqubo: ukwelashwa kokulinganisa ubuhlalu be-weld yangaphakathi, ukwelashwa kwesixazululo esiqinile, ukupholisha kwangaphakathi kwe-electrolytic.
Izici zokusebenza: ubulukhuni bangaphakathi be-Ra bungaphezu kuka-0.2, izinsalela ezilenga odongeni zincane, kulula ukuzihlanza, zivimbela ukukhula kwamagciwane, ukupholishwa kwe-electrolytic kunomphumela wokudlula, futhi udonga lwangaphakathi lunokusebenza okuhle kokuzivikela.
Izindlela zokuhlola: ukucaba okuvundlile, ubude besikhathi eside, ukuhlehla kwesicaba, ukuhlolwa kwe-hydrostatic noma ukutholwa kwephutha lamanje le-eddy, ukuhlolwa kwempahla eyimishini, ukuhlolwa kobulukhuni bangaphakathi.
