ASTM A335 P9, kuma aka sani da ASME SA335 P9, bututun ƙarfe ne mara nauyi don sabis na zafi mai zafi tare daUNS No. K90941.
Abubuwan da aka haɗa su da farko sune chromium da molybdenum.Abubuwan chromium sun bambanta daga 8.00 - 10.00%, yayin da abun ciki na molybdenum yana cikin kewayon 0.90% - 1.10%.
P9yana da ƙarfi mai kyau da kuma juriya mai kyau a cikin yanayin zafi mai zafi kuma ana amfani dashi sosai a cikin tukunyar jirgi, kayan aikin petrochemical, da tashoshin wutar lantarki inda ake buƙatar yanayin zafi da matsa lamba.
⇒ AbuASTM A335 P9 / ASME SA335 P9 bututun ƙarfe mara nauyi.
⇒Diamita na waje: 1/8 "- 24".
⇒Kaurin bango: ASME B36.10 bukatun.
⇒JadawalinSCH10, SCH20, SCH30, SCH40, SCH60, SCH80, SCH100, SCH120, SCH140 da SCH160.
⇒Ganewa: STD (misali), XS (ƙarin-ƙarfi), ko XXS (mai ƙarfi biyu).
⇒Tsawon: Tsawon tsayi na musamman ko bazuwar.
⇒Keɓancewa: Ƙananan diamita na waje, kauri na bango, tsayi, da dai sauransu bisa ga bukatun.
⇒Kayan aiki: Za mu iya samar da wannan abu bends, stamping flanges, da sauran karfe bututu-tallafawa kayayyakin.
⇒Takaddun shaida na IBR: Ana iya bayar da takardar shedar IBR idan an buƙata.
⇒Ƙarshe: Ƙarshen ƙarewa, ƙarshen lanƙwasa, ko ƙarshen bututu mai hade.
⇒Shiryawa: shari'ar katako, bel na karfe ko tattarawar waya na karfe, filastik ko mai kare ƙarshen bututun ƙarfe.
⇒Sufuri: ta marine ko jirgin sama.
ASTM A335 karfe bututu dole ne su zama maras kyau.
Bututun ƙarfe mara ƙarfi bututun ƙarfe ne wanda ba shi da walƙiya a ko'ina.
Tun da bututun ƙarfe maras sumul ba shi da ƙwanƙolin welded a cikin tsarinsa, yana guje wa yuwuwar haɗarin aminci waɗanda za su iya haɗawa da lamuran ingancin walda.Wannan fasalin yana ba da damar bututun da ba shi da kyau don jure matsi mafi girma, kuma tsarinsa na ciki na kama yana ƙara tabbatar da amincin bututun a cikin yanayin matsa lamba.
Bugu da ƙari, ana haɓaka amincin bututun ASTM A335 ta hanyar haɓaka takamaiman abubuwan haɗin gwiwa don yanayin zafi da matsa lamba.
Nau'in jiyya na zafi da ake samu don kayan P9 sun haɗa da cikakken ko isothermal annealing, da kuma daidaitawa da haɓakawa.Tsarin daidaitawa da yanayin zafi yana da zafin jiki na 1250°F [675°C].
Babban abubuwan haɗin gwiwa na P9 suneCrkumaMo, wanda su ne chromium-molybdenum gami.
Cr (Chromium): A matsayin babban kashi na gami, Cr yana samar da kyakkyawan ƙarfin zafin jiki da juriya ga iskar shaka.Yana samar da fim din chromium oxide mai yawa a kan saman karfe, yana ƙara kwanciyar hankali da juriya na lalata bututu a yanayin zafi.
Mo (Molybdenum): Bugu da ƙari na Mo yana inganta ƙarfi da ƙarfi na gami, musamman a cikin yanayin zafi mai zafi.Mo kuma yana taimakawa wajen haɓaka ƙarfin abu mai rarrafe, watau ikon yin tsayayya da nakasawa ƙarƙashin ɗaukar zafi mai tsawo.
Tensile Properties
P5, P5b, P5c, P9,P11, P15, P21, da P22: Ƙarfin ƙarfi da ƙarfi iri ɗaya ne.
P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, da P22: Haka elongation.
ATebur na 5 yana ba da mafi ƙarancin ƙididdiga.
Inda kaurin bango ya ta'allaka tsakanin dabi'u biyun da ke sama, mafi ƙarancin ƙimar elongation ana ƙaddara ta hanyar dabara mai zuwa:
Tsayi, P9: E = 48t + 15.00 [E = 1.87t + 15.00]
Mai juyawa, P9: E = 32t + 15.00 [E = 1.25t + 15.00]
inda:
E = tsawo a cikin 2 in. ko 50 mm,%,
t = ainihin kauri na samfurori, in. [mm].
Tauri
P9 baya buƙatar gwajin taurin.
P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, da P921: Ba a buƙatar gwajin tauri.
Lokacin da diamita na waje> 10 in. [250 mm] da kaurin bango ≤ 0.75 in. [19 mm], duk za a gwada ruwa.
Ana iya ƙididdige matsi na gwaji ta amfani da ma'auni mai zuwa.
P = 2St/D
P= gwajin gwajin hydrostatic a psi [MPa];
S= damuwa bangon bututu a psi ko [MPa];
t= ƙayyadadden kauri na bango, ƙayyadaddun kauri na bango bisa ƙayyadadden adadin jadawalin ANSI ko sau 1.143 ƙayyadadden ƙayyadadden kauri na bango, a cikin. [mm];
D= ƙayyadadden diamita na waje, diamita na waje daidai da ƙayyadadden girman bututun ANSI, ko diamita na waje da aka ƙididdige su ta ƙara 2t (kamar yadda aka bayyana a sama) zuwa ƙayyadadden diamita na ciki, in. [mm].
Lokacin gwaji: kiyaye aƙalla 5s, babu zubewa.
Lokacin da ba za a yi amfani da bututun ruwa ba, za a yi gwajin da ba zai lalata ba akan kowane bututu don gano lahani.
Gwajin marasa lalacewa na kayan P9 yakamata a yi ta ɗayan hanyoyinE213, E309 or E570.
E213: Kwarewa don Gwajin Ultrasonic na Metal Bututu da Tubing;
E309: Kwarewa don gwajin Eddy na yanzu na samfuran Tubular Karfe Ta Amfani da Saturation Magnetic;
E570: Kwarewa don Gwajin Leakage Flux na samfuran Tubular Karfe na Ferromagnetic;
Bambance-bambancen da aka halatta a Diamita
Ana iya rarraba karkatattun diamita bisa ga ko dai 1. dangane da diamita na ciki ko 2. dangane da diamita na ƙima ko na waje.
1. Diamita na ciki: ± 1%.
2. NPS [DN] ko diamita na waje: Wannan ya dace da ƙetare halal a cikin teburin da ke ƙasa.
Bambance-bambancen da aka halatta a cikin Kaurin bango
Kaurin bangon bututu a kowane wuri ba zai wuce ƙayyadadden haƙuri ba.
Matsakaicin kauri na bango da diamita na waje don dubawa don bin wannan buƙatun don bututun da NPS [DN] ya umarta da lambar jadawalin ana nunawa a cikiSaukewa: ASME B36.10M.
Abubuwan da ke cikin alamar alama: Sunan mai ƙira ko alamar kasuwanci;daidaitaccen lamba;daraja;tsawo da ƙarin alamar "S".
Alamun don matsa lamba na hydrostatic da gwajin mara lalacewa a cikin tebur da ke ƙasa yakamata a haɗa su.
Alamar wuri: Ya kamata a fara yin alama kamar inci 12 (300 mm) daga ƙarshen bututu.
Don bututu har zuwa NPS 2 ko ƙasa da 3 ft (1 m) tsayi, ana iya haɗa alamar bayanin zuwa alamar.
Ana amfani da bututun ƙarfe na ASTM A335 P9 a cikin tukunyar jirgi, tashoshin wutar lantarki na kayan aikin petrochemical, da sauransu, waɗanda ke buƙatar jure yanayin zafi da matsanancin matsin lamba saboda girman girmansa da juriya mai ƙarfi.
Boilers: Musamman a cikin babban bututun tururi da reheater bututu na supercritical da ultra-supercritical tukunyar jirgi don sosai high yanayin zafi da kuma matsa lamba.
Petrochemical kayan aiki: Irin su bututun ƙwanƙwasa da bututun zafi mai zafi, waɗanda ke ɗaukar tururin zafin jiki da sinadarai, suna buƙatar kayan aiki tare da kyakkyawan yanayin zafi da juriya na lalata.
Tashoshin wutar lantarki: Don manyan bututun tururi da masu dumama zafi, da kuma bututun turbine na ciki don jimre da dogon lokaci na yawan zafin jiki da matsa lamba.
P9 Materials suna da nasu ma'auni a ma'auni na ƙasa daban-daban.
EN 10216-2: 10CrMo9-10;
GB/T 5310: 12Cr2Mo;
JIS G3462: STBA 26;
ISO 9329: 12CrMo195;
GOST 550: 12 ChM;
Kafin zabar kowane kayan da ya dace, ana ba da shawarar cewa a gudanar da cikakken kwatancen aikin da gwaji don tabbatar da cewa madadin kayan zai cika buƙatun ƙirar asali.
Tun lokacin da aka kafa shi a cikin 2014.Botop Karfeya zama babban mai samar da bututun ƙarfe na carbon a Arewacin kasar Sin, wanda aka sani don kyakkyawan sabis, samfurori masu inganci, da cikakkun mafita.
Kamfanin yana ba da nau'ikan bututun ƙarfe na carbon da samfuran da ke da alaƙa, waɗanda suka haɗa da marasa ƙarfi, ERW, LSAW, da bututun ƙarfe na SSAW, da kuma cikakken jeri na kayan aikin bututu da flanges.Kayayyakinsa na musamman sun haɗa da gawa mai daraja da austenitic bakin karafa, waɗanda aka keɓance don biyan buƙatun ayyukan bututun.
Da fatan za a ji daɗin tuntuɓar mu idan kuna da wasu buƙatu ko tambayoyi game da bututun ƙarfe.Muna sa ran samun bayananku kuma muna fatan taimaka muku.
