ASTM A672he paipu kila i hana ʻia mai ka pā maikaʻi o ka ipu kaomi,Uila-Fusion-Welded (EFW)no ka lawelawe puʻe kiʻekiʻe ma nā mahana kūpono.
Nā pihi hoʻokele
ʻO ka helu helu ASTM A672
ʻO ka papa helu ASTM A672
ASTM A672 Nui Nui
Hoʻomalu Welding
Hoʻomaʻamaʻa Wela
Nā ʻāpana Kemika
Ho'āʻo Kuʻuna
Nā ho'āʻo ʻana i alakaʻi ʻia-Weld-Bend
Ho'āʻo Paʻi
ʻO ka hōʻike radiographic
Nā ʻae ʻana no ka ASTM A672
ASTM A672 Nānā
Nā hemahema a me ka hoʻoponopono
ASTM A672 hōʻailona
Hoʻohana i ka ASTM A672 Steel Pipe
ʻO kā mākou huahana pili
ʻO ka helu helu ASTM A672
Hoʻokaʻawale ʻia e like me ke ʻano o ka pā i hoʻohana ʻia no ka hana ʻana i nā paipu kila.
Hōʻike nā māka ʻokoʻa i nā haku mele ʻokoʻa a me nā waiwai mechanical no nā kūlana paʻi a me nā kūlana wela.
| Papa Paipu | ʻAno kila | Hōʻike ʻo ASTM | |
| ʻAʻole. | Papa | ||
| A 45 | kalapona maʻemaʻe | A285 / A285M | A |
| A50 | kalapona maʻemaʻe | A285 / A285M | B |
| A 55 | kalapona maʻemaʻe | A285 / A285M | C |
| B 60 | kalapona maʻemaʻe, pepehi ʻia | A515 / A515M | 60 |
| B 65 | kalapona maʻemaʻe, pepehi ʻia | A515 / A515M | 65 |
| B 70 | kalapona maʻemaʻe, pepehi ʻia | A515 / A515M | 70 |
| C 55 | kalapona maʻemaʻe, pepehi ʻia, palaoa maikaʻi | A516 / A516M | 55 |
| C 60 | kalapona maʻemaʻe, pepehi ʻia, palaoa maikaʻi | A516 / A516M | 60 |
| C 65 | kalapona maʻemaʻe, pepehi ʻia, palaoa maikaʻi | A516 / A516M | 65 |
| C 70 | kalapona maʻemaʻe, pepehi ʻia, palaoa maikaʻi | A516 / A516M | 70 |
| D 70 | manganese-silicon, maʻamau | A537 / A537M | 1 |
| D 80 | manganese-silikona, Q&TA | A537 / A537M | 2 |
| H 75 | manganese-molybdenum, maʻamau | A302 / A302M | A |
| H 80 | manganese-molybdenum, maʻamau | A302 / A302M | B, C, a i ʻole D |
| J 80 | manganese-molybdenum, Q&TA | A533 / A533M | Cl-1B |
| J 90 | manganese-molybdenum, Q&TA | A533 / A533M | Cl-2B |
| J 100 | manganese-molybdenum, Q&TA | A533 / A533M | Cl-3B |
| L 65 | molybdenum | A204 / A204M | A |
| L 70 | molybdenum | A204 / A204M | B |
| L 75 | molybdenum | A204 / A204M | C |
| N 75 | manganese-silikona | A299 / A299M | A |
AQ&T = kinai a huhū.
ВHiki ke hoʻolako ʻia kēlā me kēia papa.
Hiki iā mākou ke hoʻoholo mua i ke ʻano o ka paipu kila ma nā leka i ka papa.
Hōʻike maʻamau nā papa e hoʻomaka ana me nā leka A, B, a me Cpaipu kila kalapona.
Hōʻike nā papa e hoʻomaka ana me nā leka D, H, J, L, a me Npaipu kila kila.
ʻO ka papa helu ASTM A672
Hoʻokaʻawale ʻia nā paipu e like me ke ʻano o ka mālama wela i loaʻa iā lākou i ka wā o ke kaʻina hana a inā i nānā ʻia a ʻaʻole i nānā ʻia a hoʻāʻo ʻia ke kaomi.
| Papa | Hana wela ma ka paipu | Radiography, e nānā i ka leka: | ʻO ka hoʻāʻo paʻi, e ʻike i ka memo: |
| 10 | ʻaʻohe | ʻaʻohe | ʻaʻohe |
| 11 | ʻaʻohe | 9 | ʻaʻohe |
| 12 | ʻaʻohe | 9 | 8.3 |
| 13 | ʻaʻohe | ʻaʻohe | 8.3 |
| 20 | hoʻomaha ʻia ke kaumaha, e ʻike i ka 5.3.1 | ʻaʻohe | ʻaʻohe |
| 21 | hoʻomaha ʻia ke kaumaha, e ʻike i ka 5.3.1 | 9 | ʻaʻohe |
| 22 | hoʻomaha ʻia ke kaumaha, e ʻike i ka 5.3.1 | 9 | 8.3 |
| 23 | hoʻomaha ʻia ke kaumaha, e ʻike i ka 5.3.1 | ʻaʻohe | 8.3 |
| 30 | maʻamau, e nānā i ka 5.3.2 | ʻaʻohe | ʻaʻohe |
| 31 | maʻamau, e nānā i ka 5.3.2 | 9 | ʻaʻohe |
| 32 | maʻamau, e nānā i ka 5.3.2 | 9 | 8.3 |
| 33 | maʻamau, e nānā i ka 5.3.2 | ʻaʻohe | 8.3 |
| 40 | maʻamau a me ka huhū, e nānā i ka 5.3.3 | ʻaʻohe | ʻaʻohe |
| 41 | maʻamau a me ka huhū, e nānā i ka 5.3.3 | 9 | ʻaʻohe |
| 42 | maʻamau a me ka huhū, e nānā i ka 5.3.3 | 9 | 8.3 |
| 43 | maʻamau a me ka huhū, e nānā i ka 5.3.3 | ʻaʻohe | 8.3 |
| 50 | kinai a huhu, nana 5.3.4 | ʻaʻohe | ʻaʻohe |
| 51 | kinai a huhu, nana 5.3.4 | 9 | ʻaʻohe |
| 52 | kinai a huhu, nana 5.3.4 | 9 | 8.3 |
| 53 | kinai a huhu, nana 5.3.4 | ʻaʻohe | 8.3 |
Pono e uku nui ʻia i ka mahana lawelawe i manaʻo ʻia i ke koho ʻana i ka papa mea kūpono.E nānā i ka kikoʻī ASTM A20/A20M.
ASTM A672 Nui Nui
Paipai ʻia nā pae nui: DN≥400mm[16 in] a me WT≤75mm[3 in].
No nā nui ʻē aʻe o ka paipu, inā kūpono ia i nā koi ʻē aʻe o kēia kikoʻī, hiki ke hoʻohana ʻia.
Hoʻomalu Welding
E hoʻopaʻa ʻia nā hili ʻelua, e hoʻopili piha ʻia.
E hana ʻia nā welds me ka lima a i ʻole ma ke kaʻina hana uila e pili ana i ka waiho ʻana o ka metala filler.
Hiki ke nānā ʻia nā welds me ka hoʻohana ʻana i ka lekiō a pono e hahai i nā ʻōlelo ma ka Pauku VII UW-51 o ka ASME Boiler and Pressure Vessel Code.
ʻAʻole ʻoi aku ke kiʻekiʻe o ka weld ma mua o 3 mm [1/8 in].
Hoʻomaʻamaʻa Wela
ʻO nā papa ʻē aʻe ma mua o 10, 11, 12, a me 13 e mālama ʻia i ka wela i loko o ka umu i hoʻomalu ʻia i ± 25 °F[± 15°C]:
Nā papa 20, 21, 22, a me 23
E hoʻomāhana like ʻia ka paipu i loko o ka pae wela o ka wela ma hope o ka weld i hōʻike ʻia ma ka Papa 2 no ka liʻiliʻi o 1 h/in.[0.4 h/cm] o ka mānoanoa a i ʻole no 1 hola, ʻo ia ka mea i ʻoi aku ka nui.
Nā papa 30, 31, 32, a me 33
E hoʻomaʻamaʻa like ʻia ka paipu i kahi wela ma ka austenitizing range a ʻaʻole i ʻoi aku ma mua o ka wela maʻamau maʻamau i hōʻike ʻia ma ka Papa 2 a ma hope iho e hoʻomaha ʻia i ka lewa ma ka lumi wela.
Nā papa 40, 41, 42, a me 43
E hoʻomaʻamaʻa ʻia ka paipu.
E hoʻomaʻamaʻa hou ʻia ka paipu i ka wela wela i hōʻike ʻia ma ka Papa 2 ma ke ʻano he haʻahaʻa a mālama ʻia ma kahi wela no ka liʻiliʻi o 0.5 h/in.[0.2 h/cm] o ka mānoanoa a i ʻole no ka1/2h, ka mea i oi aku, a me ka ea.
Nā papa 50, 51, 52, a me 53
E hoʻomāhana like ʻia ka paipu i nā mahana i loko o ka pae austenitizing a ʻaʻole i ʻoi aku ma mua o ka wela hoʻopau kiʻekiʻe i hōʻike ʻia ma ka Papa 2.
A laila e kinai i ka wai a i ʻole ka aila.Ma hope o ke kinai ʻana, e hoʻomaʻamaʻa hou ʻia ka paipu i ka wela haʻahaʻa haʻahaʻa i hōʻike ʻia ma ka Papa 2 a paʻa i kēlā.
ka mahana no ka liʻiliʻi o 0.5 h/ini [0.2 h/cm] o ka mānoanoa a i ʻole 0.5 h, ʻo ia ka mea i ʻoi aku ka nui, a ua hoʻoluʻu ea.
Nā ʻāpana Kemika
ʻO ia ke kuleana o ka mea hana e hoʻāʻo i ka hoʻohui kemika o ka pā a me nā welds no ka hoʻokō ʻana i nā koi o ka ʻōlelo kikoʻī no ka mea i kauoha ʻia a me ke kaʻina hana welding no ka waiho ʻana i ka weld metala, kēlā me kēia.
Ho'āʻo Kuʻuna
Ka pinepine hoʻokolohua: hoʻokahi mea hoʻohālike no ka hailona.
Hana Hoao: E hana ʻia nā mea hoʻāʻo e like me QW-150 ma ka Pauku IX o ka ASME Boiler and Pressure Vessel Code.E hoʻāʻo ʻia nā mea hoʻohālike ma ka lumi wela e like me nā ʻano hoʻāʻo a me ka wehewehe A370.
Ma waho aʻe o nā papa Dxx, Hxx, Jxx, a me Nxx i loko o nā papa 3x, 4x, a me 5x transverse tensile waiwai o ka pā kumu, e hoʻoholo ʻia ma nā mea kikoʻī i ʻoki ʻia mai ka paipu wela.
Nā koi no nā hopena: E hoʻokō nā waiwai tensile transverse o ka hui welded i nā koi liʻiliʻi no ka ikaika tensile hope loa o ka mea pā i kuhikuhi ʻia.
Nā ho'āʻo ʻana i alakaʻi ʻia-Weld-Bend
Ka helu o na hoao: ʻO ka pinepine hoʻokolohua: hoʻokahi manawa i kēlā me kēia pūʻulu, ʻelua mau hiʻohiʻona
ʻano hoʻokolohua: E hoʻokō ʻia nā koi hoʻāʻo o nā ʻano hoʻāʻo a me nā wehewehe A370, pauku A2.5.1.7.
No ka mānoanoa o ka pā ma luna3/ 8i loko [10 mm] akā emi mai3/4in. [19 mm] Hiki ke hana ʻia nā hoʻāʻo ʻaoʻao ʻaoʻao ma kahi o ka hoʻāʻo ʻana i ka alo a me ke aʻa.
No ka mānoanoa o ka pā3/4in. [19 mm] a ma luna o nā mea hoʻohālike ʻelua e kau ʻia i ka hoʻāʻo ʻaoʻao-piʻo.
Nā koi no nā hopena: E ʻae ʻia ka hoʻāʻo piko inā ʻaʻohe māwae a i ʻole nā hemahema ʻē aʻe1/8i. [3 mm] ma kekahi ʻaoʻao aia i loko o ka weld metala a i ʻole ma waena o ka weld a me ka metala kumu ma hope o ke kulou ʻana.
ʻO nā māwae i puka mai ma nā ʻaoʻao o ka hōʻailona i ka wā o ka hoʻāʻo ʻana, a ʻoi aku ka liʻiliʻi ma mua1/4in. [6 mm] ana ma kekahi aoao aole e noonooia.
Ho'āʻo Paʻi
E hoʻāʻo ʻia nā papa X2 a me X3 paipu e like me ka Specification A530/A530M, Hydrostatic Test Requirements.
ʻO ka hōʻike radiographic
E nānā ʻia ka lōʻihi piha o kēlā me kēia weld o nā Papa X1 a me X2 e like me nā koi o ka ASME Boiler and Pressure Vessel Code, Section VIII, Paragraph UW-51.
Hiki ke hana ʻia ka hoʻokolohua radiographic ma mua o ka mālama ʻana i ka wela.
Nā ʻae ʻana no ka ASTM A672
| Haʻuki | Waiwai hoʻomanawanui | Nānā |
| Anawaena waho | ±0.5% | Ma muli o ke ana puni |
| Poe-waho | 1%. | ʻO ka ʻokoʻa ma waena o nā anawaena nui a me ka liʻiliʻi ma waho |
| Hoʻopololei | 1/8 iniha [3 mm] | E hoʻohana ana i kahi ʻaoʻao pololei 10 kapuaʻi [3 m] i hoʻopili ʻia nā welau ʻelua me ka paipu |
| mānoanoa | 0.01 iniha [0.3 mm] | ʻOi aku ka mānoanoa o ka paia liʻiliʻi ma mua o ka mānoanoa nominal i kuhikuhi ʻia |
| Nā lōʻihi | 0-+0.5in [0-+13mm] | nā hopena i hana ʻole ʻia |
ASTM A672 Nānā
ʻO ka paipu i hoʻopau ʻia ʻaʻole ia me nā pōʻino ʻino a loaʻa ka hopena e like me ka hana.
ʻO nā koi like e like me ka kikoʻī ASTM A20/A20M no ka hoʻopau ʻana i ka ʻili o nā papa kila.
Nā hemahema a me ka hoʻoponopono
Hoʻoholo hewa
ʻAʻole kuhikuhi ka maʻamau ASTM A672 i nā pae kūpono o nā hemahema a me nā pae hoʻoholo no ka paipu a pili pinepine i nā kūlana ʻenehana kūpono a me nā hana ʻoihana.
Nā hemahema o loko: Hiki i nā hemahema o loko ke komo i ka porosity, slag, inclusions, etc.
Nā hemahema o waho: Hiki i nā hemahema o waho ke komo i nā māwae, nā niho, nā ʻōpala, a pēlā aku.
Wehe ʻia ma ka hoʻopili hou ʻana
Hiki ke hoʻoneʻe ʻia nā pōʻino o ka ʻili ma o ka wili ʻana a i ʻole ka mīkini ʻana me ke koena mānoanoa ʻaʻole emi ma lalo o 0.3 mm ma lalo o ka mānoanoa maʻamau.
Pono e hoʻohui like ʻia ka hoʻohaʻahaʻa hou ʻana i ka ʻili a puni.
Hooponopono wiliwili
E hoʻoneʻe ʻia nā hemahema e ka ʻoki mīkini a i ʻole ka wela a i ʻole ke ʻano dicing a mākaukau e hoʻoponopono i nā lua welded.
a nānā ʻia me ka radiologically e like me ka ASME Boiler and Pressure Vessel Code, Section VIII, Paragraph UW-51.
ʻO ka lōʻihi piha o ka paipu i hoʻoponopono ʻia e mālama ʻia i ka wela ma hope o ka hoʻoponopono ʻana e like me nā koi o ka papa paipu.
ASTM A672 hōʻailona
ʻO ka hōʻailona ʻana i kēia mau mea:
ʻO ka mea hōʻailona o ka mea hana, e like me kahi hōʻailona a i ʻole logo.
Hōʻike o ka paipu (ka nui, ka mānoanoa o ka paia, a me nā mea ʻē aʻe).
Papa waiwai a i ʻole ʻano paipu.Laʻana: C60-22 (pōkole no ka papa: C60 a me ka papa 22).
ʻO ke kūlana hana o ka paipu ʻo ASTM A672.
Ka lā hana a i ʻole ka helu hailona hana.
Hoʻohana i ka ASTM A672 Steel Pipe
I ka ʻoihana mana uila, hoʻohana pinepine ʻia ʻo ASTM A672 Electric Welded Steel Pipe e lawe i ka mahu i nā ʻōnaehana boiler.
I ka ʻoihana kemika, hoʻohana pinepine ʻia ka paipu kila welded ASTM A672 no ka lawe ʻana i nā kemika like ʻole, ka waikawa, a me nā hopena alkali, a me nā mea hoʻolaha ʻē aʻe.
I ka ʻoihana aila a me ke kinoea, hoʻohana maʻamau ka ASTM A672 welded steel pipe no ka lawe ʻana i ka aila ʻaila, kinoea maoli, a me nā wai a me nā kinoea ʻē aʻe.
ʻO mākou kahi mea hana kiʻekiʻe kiʻekiʻe welded carbon steel paipu a me ka mea hoʻolako mai Kina, a me kahi mea hoʻoheheʻe paipu kila maʻemaʻe, hāʻawi iā ʻoe i kahi ākea o nā paipu kila!
Tags: ASTM a672, efw, paipu kila kalapona, papa.
Ka manawa hoʻouna: Apr-23-2024