ASTM A335 P5 Bututun Karfe Ba Ya Kashe - BLOG

Bayanin Kayan Aiki

ASTM A335 Grade P5 bututun ƙarfe ne na chromium-molybdenum gami da ƙarfe wanda aka yi niyya don ɗaukar nauyi{2}}zazzabi da matsa lamba{3}} sabis. Tare da chromium a cikin kewayon 4-6% da molybdenum a kusa da 0.45-0.65%, P5 yana ba da haɗin amfani mai amfani na juriya na iskar shaka, ƙarfin creep, da weldability. Wannan ya sa ya zama zaɓi mai amfani don tukunyar jirgi da layukan tururi, bututun dumama matatar, mai gyarawa da layukan aiwatar da zafi inda ƙarfen carbon zai yi girma da sauri ko rasa ƙarfi. Lokacin da aka isar da shi a cikin yanayin daidaitacce da yanayin zafi, P5 yana kiyaye daidaiton girma da amincin injina tsawon lokutan aiki.

Haɗin Sinadari (na al'ada, %)

Abun ciki	Abun ciki (%)	Aiki
Carbon (C)	Kasa da ko daidai da 0.15	Yana ba da ƙarfi, kiyaye ƙasa don weldability
Manganese (Mn)	0.30–0.60	Deoxidation, inganta zafi aiki
Silicon (Si)	0.50–1.00	Yana goyan bayan juriya na iskar shaka
Chromium (Cr)	4.00–6.00	Maɗaukakin zafin jiki{0} da juriya na lalata
Molybdenum (Mo)	0.45–0.65	Ƙarfin ɓarna da fashewa
Phosphorus (P)	Kasa da ko daidai da 0.025	Yana kiyaye tauri
Sulfur (S)	Kasa da ko daidai da 0.025	Daidaitaccen machinability/tauri
Nickel (Ni)	Kasa da ko daidai da 0.50	Ƙarin tauri a wasu kafofin watsa labarai
Copper (Cu)	Kasa da ko daidai da 0.40	Ƙarin kariyar oxidation
V, Nb	Kasa da ko daidai da 0.02 kowanne	Gyaran hatsi, kwanciyar hankali

Wannan ma'aunin alloy ya yi ƙasa da P22/P91, don haka yana da sauƙin walda da zuwa PWHT, amma har yanzu yana ba da mafi kyawun sarrafa iskar oxygen fiye da ƙananan maki -Cr.

Kayayyakin Injini

Dukiya	Bukatu	Manufar
Ƙarfin ƙarfi	Yafi ko daidaita 415 MPa (60 ksi)	Yana tsayayya da karaya a ƙarƙashin kaya
Ƙarfin bayarwa	Yafi ko daidaita 205 MPa (30 ksi)	Yana tsayayya da nakasu na dindindin
Tsawaitawa	Yafi ko daidaita 30%	Yana ba da damar ƙirƙira da ƙirƙira
Tauri	Kasa da ko daidai da 163 HBW	Yana kiyaye tauri da daidaitawar walda

Waɗannan dabi'u sun yi daidai da daidaitaccen yanayin isar da yanayi na - da{1}} wanda ASTM A335 ke buƙata.

Masana'antu da Maganin Zafi

Dole ne a samar da P5 kuma a kula da zafi a hankali don tabbatar da aikin dogon lokaci a yanayin zafi. Octal Pipe yana amfani da hanyar da ba ta dace ba wacce ta fara daga tsaftataccen Cr{4}}Mo billets. Ana dumama kwalabe da huda su zama ramuka, sannan zafi{6}} birgima ko sanyi{7}} zuwa diamita na waje da kaurin bango. Bayan kafa, ana daidaita bututu a kusan digiri 900-950 don tace matrix na ferritic, narkar da carbides na Uniform da cire damuwa. Matakin zafin na gaba a kusan digiri 675-750 yana dawo da ductility kuma yana gyara tsayayyen tsarin ferrite-carbide. Wannan zagayowar yanayin zafi guda biyu{16} shine abin da ke baiwa P5 juriya mai raɗaɗi da kwanciyar hankali a cikin sabis.

Bayan maganin zafi, kowane bututu ana fuskantar gwajin hydrostatic, duban ƙima da gwaji marasa lahani (ultrasonic ko eddy current kamar yadda aka yi oda). Ana ba da bututu a cikin yanayin daidaitacce da yanayin zafi tare da cikakken yanayin zafi (EN 10204 3.1 ko 3.2), wanda ke da mahimmanci ga ayyukan wutar lantarki da matatar.

asme sa335 p5 chrome moly 5cr 0.5mo seamless pipe - octal pipe asme sa335 p5 alloy steel pipe ends close up wall thickness - octal pipe

Girman Rage

Siga	Range / Cikakkun bayanai
Waje Diamita	12.7-610 mm (½-24 in)
Kaurin bango	1.2-100 mm, ciki har da. SCH 10-SCH 160
Tsawon	Har zuwa 12 m (SRL / DRL / yanke -zuwa{2}} tsayi)
Nau'in Ƙarshe	Beveled don walda ko ƙarshen ƙarshen
Haƙuri OD	Yawanci ± 1% (kowace ASTM A999 ko yarjejeniya)
Hakuri WT	Yawanci ± 10%
Madaidaici	Yawanci ƙasa da ko daidai da 0.8 mm kowace m

Wannan kewayon ya ƙunshi duka matsakaita{0}} layukan tururi da manyan matatar mai/masu kaifin sinadarai.

Babban -Aikin Zazzabi

A yanayin zafi na sabis har zuwa kusan digiri 565 (digiri 1050 F), P5 yana samar da ƙaramin chromium{3}} wadataccen oxide wanda ke rage ƙima da asarar ƙarfe. Saboda molybdenum yana ƙarfafa matrix na ferritic, nakasawa mai rarrafe yana gudana a hankali fiye da a fili na carbon karfe. Ƙaƙƙarfan ƙananan ƙaƙƙarfan yanayi kuma yana taimakawa tsayayya da hawan keke na zafi da lalata ƙasa, don haka canjin zafi da kauri na bango sun kasance mafi tsinkaya fiye da tazarar dubawa. Don aikace-aikacen da ke buƙatar ƙarin zafin jiki ko damuwa mai girma, injiniyoyi na iya ƙaura zuwa P11 ko P22, amma don oxidation{9}}mahimmanci, matsakaici{10}} sabis na yanayin zafi, P5 galibi shine farashi{12} zaɓi mai inganci.

Aikace-aikace

Tsarin wutar lantarki da tukunyar jirgi: layin tururi, masu kai ruwa, superheater da coils na reheater a cikin rukunin zazzabi na matsakaici

Refining da petrochemical raka'a: tanderu da reformer bututu, zafi canja wuri Lines, flare da taimako headers

Sinadarai da tsire-tsire taki: manyan masu musayar zafi, reactor da manifolds

Wuraren sarrafa mai da iskar gas: allurar tururi da layin tsari mai zafi inda aka ƙayyade bututun Cr{{0}Mo

Kwatanta tare da Common Cr{0}}Maki

Daraja	Cr (%)	Mo (%)	Halin sabis na yau da kullun
P5	4.0–6.0	0.45–0.65	Mafi kyawun juriya na iskar oxygen a matsakaici{0} babban zafin jiki, kyakkyawan walƙiya
P11	~1–1.5	~0.5	Gabaɗaya bututun tururi/ tukunyar jirgi inda ƙarfi da ductility dole ne a daidaita
P22	~2–2.5	~1	Mafi zafi superheater/reheater yanayi yana buƙatar mafi girma juriya creep/rupture

Wannan yana taimaka injiniyoyin aikin su zaɓi madaidaicin gami lokacin da aka ba da izinin makin ASTM A335 da yawa.

Dubawa da Gwaji

Octal Pipe yana aiwatar da gwaji daidai da buƙatun ASTM A335 da ASTM A999. Wannan ya haɗa da gwajin hydrostatic, NDT na jikin bututu da ƙarewa, tabbatarwa mai ƙarfi da taurin, da gwaje-gwajen flattening/flaring don tabbatar da ductility. Za'a iya ƙara tasirin tasiri ko gwajin hoto lokacin da ƙayyadaddun aikin ya buƙaci ajin dubawa mafi girma. An taƙaita duk sakamakon gwajin a cikin takaddun gwajin niƙa kuma ana yiwa bututun alama don cikakken ganewa.

Domin Octal Pipe

Yana ba da ainihin ASTM/ASME A335 P5 bututu mara nauyi a cikin yanayin daidaitacce da yanayin zafi.

Cikakken juzu'i, injiniyoyi da bayanan NDT masu dacewa da aikin wutar lantarki, matatun mai da sinadarai

Fitarwa{0}} shirye-shiryen tattarawa, ƙare kariya da yin alama

Ability don samar da maki kusa (P11, P22) don bututun mai da tsarin tukunyar jirgi tare da yankuna daban-daban na zafin jiki.

Abun ciki da ƙayyadaddun bayanai da aka rubuta a cikin samfur - na farko, salon fasaha wanda ya dace da bugu na yanar gizo da firikwensin bincike

Tuntuɓi yanzu

FAQ

Q1: Menene ASTM A335 P5 bututu da ake amfani dashi?

A1:Bututun ƙarfe mai ƙarfi mara ƙarfi don matsanancin zafi, sabis mai girma{1} a cikin matatun mai, masana'antar wutar lantarki, da na'urori masu sarrafawa.

Q2: Menene ma'anar "5Cr-0.5Mo" ga P5 chrome moly bututu?

A2:Ƙirar gami ce ke inganta juriya da iskar oxygen da haɓaka ƙarfin zafin jiki{0}.

Q3: Menene bututun welded - daidai da ASTM A335 P5?

A3:ASTM A691 5CR yawanci ana keɓance shi don welded chrome{1}}moly pipe wanda aka yi daga faranti mai jituwa.

Q4: Ta yaya zan zabi P5 vs P9 vs P11 vs P22?

A4:Zaɓi ta yanayin zafin aiki, oxidation/ tsananin girman, da ƙayyadaddun aikin{0}}P5 galibi ana zaɓar lokacin da ake buƙatar Cr mafi girma don sabis mai zafi.