ASTM A335 P5 paipu kila huila ʻole

Nānā Mea

ʻO ka ASTM A335 Grade P5 he paipu kila ferritic chromium–molybdenum alloy i manaʻo ʻia no ka lawelawe ʻana i ka wela a me ke kaomi kiʻekiʻe. Me ka chromium ma ka laulā 4-6% a me ka molybdenum ma kahi o 0.45-0.65%, hāʻawi ʻo P5 i kahi hui pono o ka pale ʻana o ka oxidation, ka ikaika creep, a me ka weldability. He koho kūpono kēia no ka paila a me nā laina mahu, ka paipu hoʻoheheʻe hoʻomaʻemaʻe, ka mea hoʻoponopono a me nā laina kaʻina wela kahi e piʻi wikiwiki ai ke kila kalapona a nalowale ka ikaika. Ke hāʻawi ʻia i loko o ke kūlana maʻamau a me ka huhū, mālama ʻo P5 i ke kūpaʻa dimensional a me ka hilinaʻi mechanical i nā wā hana lōʻihi.

Hoʻohui Kimia (maʻamau, %)

ʻElemu	Maʻiʻo (%)	Hana
Kalapona (C)	ʻOi aku a i ʻole like me 0.15	Hāʻawi i ka ikaika, mālama haʻahaʻa no ka weldability
Manganese (Mn)	0.30–0.60	Deoxidation, hoʻomaikaʻi i ka hana wela
Silika (Si)	0.50–1.00	Kākoʻo i ka pale ʻana i ka oxidation
Chromium (Cr)	4.00–6.00	Kiʻekiʻe -māmā a me ka corrosion
Molybdenum (Mo)	0.45–0.65	Ka ikaika o ke kolo a me ka haki
ʻOka (P)	He emi a like paha me 0.025	E mālama i ka paʻakikī
Sulfur (S)	He emi a like paha me 0.025	ʻO ka machinability / paʻakikī kaulike
Nikela (Ni)	He emi a like paha me ka 0.50	ʻOi aku ka paʻakikī i kekahi mau media
Ke keleawe (Cu)	He emi a like paha me 0.40	ʻO ka pale oxidation hou
V, Nb	ʻOi aʻe a like paha me 0.02 kēlā me kēia	ʻO ka hoʻomaʻemaʻe palaoa, ke kūpaʻa kolo

ʻOi aku ka haʻahaʻa o kēia koena huila ma mua o P22/P91, no laila ʻoi aku ka maʻalahi o ka wili a me ka PWHT, akā hāʻawi mau i ka mana oxidation ʻoi aku ka maikaʻi ma mua o nā māka haʻahaʻa-Cr.

Na Waiwai Mechanical

Waiwai	Koi	Ke kumu
Ka ikaika tensile	ʻOi aku a i ʻole like me 415 MPa (60 ksi)	Kū'ē i ka haʻihaʻi ma lalo o ka ukana
E hāʻawi i ka ikaika	ʻOi aku a i ʻole like me 205 MPa (30 ksi)	Kū'ē i ka deformation mau
ʻO ka elongation	ʻOi aku a i ʻole like me 30%	Hāʻawi i ka hana ʻana a me ka hana ʻana
ʻoʻoleʻa	ʻOi aku a i ʻole like me 163 HBW	Mālama i ka paʻakikī a me ka launa pū ʻana

Kūlike kēia mau waiwai i ke kūlana hoʻopuka maʻamau-a-e koi ʻia e ASTM A335.

Hana Hana a me ka wela

Pono e hana ʻia ka P5 a mālama ʻia ka wela-no ka mālama ʻana i ka hana lōʻihi-ma ka wela. Hoʻohana ʻo Octal Pipe i kahi ala maʻemaʻe e hoʻomaka ana mai nā billet Cr-Mo maʻemaʻe. Hoʻomaʻamaʻa ʻia nā pila a hou ʻia a lilo i ʻāwaha, a laila huki ʻia ka wela -a i ʻole ke anu- i ke anawaena o waho a me ka mānoanoa o ka paia. Ma hope o ka hana ʻia ʻana, hoʻomaʻamaʻa ʻia nā paipu ma kahi o 900–950 degere e hoʻomaʻemaʻe i ka matrix ferritic, e hoʻoheheʻe i nā carbide like ʻole a wehe i nā kaumaha. Hoʻihoʻi hou ʻia ka ductility a hoʻoponopono i kahi ʻano hana ferrite-carbide ma hope o ka hana hoʻoheheʻe ʻana ma kahi o 675–750 degere. ʻO kēia ʻelua{16}}pae wela ka mea e hāʻawi iā P5 i kona kūpaʻa ʻana a me ka paʻa ʻana o ka oxidation i ka lawelawe.

Ma hope o ka hoʻomaʻamaʻa ʻana i ka wela, e hoʻāʻo ʻia kēlā me kēia paipu i ka hoʻāʻo hydrostatic, ka nānā ʻana a me ka -ʻike hoʻopōʻino ʻole (ultrasonic a i ʻole eddy current e like me ke kauoha). Hāʻawi ʻia nā paipu ma ke ʻano maʻamau a me ka wela me ka hiki ke ʻike i ka wela piha (EN 10204 3.1 a i ʻole 3.2), he mea nui ia no nā hana mana a me ka hoʻomaʻemaʻe.

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

Launa Ana

ʻĀpana	Laulā / kikoʻī
Mawaho Anawaena	12.7–610 mm (½–24 iniha)
Mānoanoa Pā	1.2–100 mm, komo. SCH 10–SCH 160
Ka lōʻihi	A hiki i 12 m (SRL / DRL / ʻoki -i-lōʻihi)
ʻAno Hoʻopau	Beveled no ka wiliwili a i ʻole ka hopena maʻamau
OD Hoomanawanui	ʻO ka maʻamau ± 1% (ma ka ASTM A999 a i ʻole ka ʻaelike)
WT Hoomanawanui	ʻO ka maʻamau ± 10%
Pololei	ʻOi aku ka liʻiliʻi a i ʻole like me 0.8 mm no ka m

Hoʻopili kēia laulima i nā laina mahu -wauwau a me nā poʻo poʻomanaʻo hoʻomaʻemaʻe/kemika nui.

Kiʻekiʻe -Mahina Hana Hana

Ma ka wela o ka lawelawe a hiki i ka 565 degere (1050 degere F), hana ka P5 i ka chromium -mea waiwai waiwai e hoʻolohi i ka scaling a me ka poho metala. Ma muli o ka hoʻoikaika ʻana o ka molybdenum i ka matrix ferritic, ʻoi aku ka mālie o ka deformation kolo ma mua o ke kila kalapona. Kōkua pū ka microstructure i ka pale ʻana i ka paikikala wela a me ka hoʻohaʻahaʻa ʻana o ka ʻili, no laila e ʻoi aku ka ʻike ʻia o ka ʻili o ka wela a me ka mānoanoa o ka paia i nā wā nānā. No nā noi e koi ana i ka wela kiʻekiʻe a i ʻole ke koʻikoʻi kiʻekiʻe, hiki i nā mea ʻenekinia ke neʻe i ka P11 a i ʻole P22, akā no ka lawelawe ʻana i ka wela -koʻikoʻi,-mea wela, ʻo P5 ke kumu kūʻai.

Nā noi

Nā ʻōnaehana mana a me ka paila: nā laina mahu, nā poʻomanaʻo boiler, superheater a me nā wili hoʻomaʻamaʻa hou i ka hui wela waena.

ʻO nā ʻāpana hoʻomaʻemaʻe a me ka petrochemical: ka umu ahi a me ka hoʻoponopono hou ʻana, nā laina hoʻololi wela, ka lapalapa a me nā poʻo kōkua.

Nā mea kanu kemika a me nā mea hoʻomomona: -mea hoʻololi wela wela, reactor a me nā ʻano hana.

Nā mea hana aila a me ke kinoea: hoʻoheheʻe mahu a me nā laina kaʻina hana wela kahi i kuhikuhi ʻia ai ka paipu Cr-Mo

Hoʻohālikelike me nā Papa Cr -Mo maʻamau

Papa	Cr (%)	M (%)	ʻAno lawelawe maʻamau
P5	4.0–6.0	0.45–0.65	ʻOi aku ka maikaʻi o ka pale ʻana i ka oxidation ma waena -kiʻekiʻe wela, maikaʻi ka weldability
P11	~1–1.5	~0.5	ʻO ka paipu mahu/boiler maʻamau kahi e kaulike ai ka ikaika a me ka ductility
P22	~2–2.5	~1	ʻOi aku ka ʻoi aku ka wela o ka wela wela a me ka hoʻoulu hou ʻana e pono ai ke kūpaʻa kiʻekiʻe o ke kolo ʻana

Kōkua kēia i nā mea ʻenekinia papahana e koho i ka huila kūpono ke ʻae ʻia kekahi mau māka ASTM A335.

Nānā a ho'āʻo

Lawe ʻo Octal Pipe i ka hoʻāʻo e like me nā koi ASTM A335 a me ASTM A999. Hoʻopili kēia i ka hoʻāʻo hydrostatic, NDT o ke kino paipu a me nā hopena, ka hōʻoia ʻana i ka tensile a me ka paʻakikī, a me nā hoʻāʻo hoʻopalapala / flaring e hōʻoia i ka ductility. Hiki ke hoʻohui ʻia ka hopena a i ʻole ka hoʻāʻo radiographic ke koi ʻia ka ʻōlelo kikoʻī o ka papahana no kahi papa nānā kiʻekiʻe. Ua hōʻuluʻulu ʻia nā hopena hōʻike a pau i nā palapala hōʻoia wili a hōʻailona ʻia nā paipu no ka ʻike piha.

No ke aha o Octal Pipe

Hāʻawi i ka paipu maʻa ʻole ʻo ASTM/ASME A335 P5 ma ke ʻano maʻamau a me ka wela.

Nā moʻolelo piha piha, mechanical a me NDT kūpono no ka mana, hoʻomaʻemaʻe a me nā hana kemika

Hoʻokuʻu aku-packing mākaukau, pale hoʻopau a me ka kaha ʻana

Hiki ke hoʻolako i nā māka pili (P11, P22) no nā paipu a me nā ʻōnaehana boiler me nā ʻāpana wela like ʻole

Maʻiʻo a me nā kikoʻī i kākau ʻia i loko o kahi huahana-mua, kaila ʻenehana kūpono no ka hoʻopuka pūnaewele a me ka huli ʻana i ka helu inoa.

Hoʻokaʻaʻike i kēia manawa

FAQ

Q1: He aha ka ASTM A335 P5 paipu i hoʻohana ʻia no?

A1:ʻO ka paipu kila ferritic ala ʻole no ke kiʻekiʻe -mahana, kiʻekiʻe-lawelawe i loko o nā mea hoʻomaʻemaʻe, nā mea kanu mana, a me nā ʻāpana hana.

Q2: He aha ka manaʻo o "5Cr-0.5Mo" no P5 chrome moly pipe?

A2:ʻO ia ka hoʻolālā huila e hoʻomaikaʻi i ka pale ʻana i ka oxidation a me -ikaika wela kiʻekiʻe.

P3: He aha ka paipu wiliwili -like me ASTM A335 P5?

A3:Hōʻike pinepine ʻia ʻo ASTM A691 5CR no ka paipu chrome -moly i wiliwili ʻia mai ka pā kūpono.

Q4: Pehea wau e koho ai i ka P5 vs P9 vs P11 vs P22?

A4:E koho ma ka wela o ka hana, ke kaumaha o ka oxidation/scaling, a me ka kikoʻī o ka papahana -P5 ke koho pinepine ʻia inā makemake ʻia ka Cr kiʻekiʻe no ka lawelawe wela.