ASTM A335 P5, i ʻike ʻia hoʻi ʻo ASME SA335 P5, he paipu kila humuhumu haʻahaʻa i hoʻolālā ʻia no ka lawelawe wela kiʻekiʻe.
Loaʻa i ka P5 he 4.00 ~ 6.00% chromium a me 0.45 ~ 0.65% molybdenum, e hāʻawi ana i ka ikaika a me ka hana maikaʻi loa ma lalo o nā mahana a me nā kaomi kiʻekiʻe. Hoʻohana nui ʻia ia i nā lako e like me nā paila, nā superheaters, a me nā mea hoʻololi wela.
ʻO kona inoa UNS ʻo K41545.
Mea Hana a me ke Kūlana
Pono e hana ʻia nā paipu kila ASTM A335 P5 ma ke kaʻina hana humuhumu ʻole a e huki ʻia me ka wela a i ʻole ke anu, e like me ka mea i kuhikuhi ʻia.
ʻO nā paipu i hoʻopau ʻia me ka wela he mau paipu kila wili ʻole i hana ʻia mai nā billets ma o nā kaʻina hana hoʻomehana a me ka ʻōwili ʻana, ʻoiai ʻo nā paipu i huki anu ʻia he mau paipu kila wili ʻole i hana ʻia ma ke kahakiʻi ʻana i nā paipu i hoʻopau ʻia me ka wela ma ka mahana o ka lumi.
Inā makemake ʻoe e aʻo hou aʻe e pili ana i nā kaʻina hana hana o kēia mau ʻano paipu kila humuhumu ʻole ʻelua, hiki iā ʻoe ke kaomi"He aha ka Seamless Steel Pipe?"no nā kikoʻī hou aku.
Ka Lapaʻau Wela
E hoʻomehana hou ʻia nā paipu ASTM A335 P5 no ka mālama wela a mālama ʻia e ka welaannealing piha a isothermal paha or ka hoʻomaʻamaʻa ʻana a me ka hoʻoikaika ʻana.
Ua hōʻike ʻia nā koi kikoʻī ma ka papa ma lalo nei:
| Papa | ʻAno mālama wela | ʻO ka Subcritical Annealing a i ʻole ka mahana |
| ASTM A335 P5 | anneal piha a isothermal paha | — |
| hoʻomaʻamaʻa a hoʻonāukiuki | 1250 ℉ [675 ℃] min |
Pono e ukali ʻia e ka mālama wela kūpono ʻana o nā paipu kila ma luna o ko lākou mahana koʻikoʻi, e like me ka kuʻihao, ka flanging, a me ke kulou wela.
Pono nā ʻano hoʻāʻo no ka hoʻohui kemika a me nā waiwai mechanical o nā paipu kila P5 e kūlike me nā ʻōlelo pili o ASTM A999.
| Papa | Ka hoʻonohonoho ʻana, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P5 | 0.15 ka palena kiʻekiʻe | 0.30 ~ 0.60 | 0.025 ka palena kiʻekiʻe | 0.025 ka palena kiʻekiʻe | 0.50 ka palena kiʻekiʻe | 4.00 ~ 6.00 | 0.45 ~ 0.65 |
Nā Waiwai Uʻi
| Papa | Ikaika Hoʻopaʻa | Ikaika Hāʻawi | Hoʻolōʻihi i loko o 2 ʻīniha a i ʻole 50 mm |
| P5 | 60 ksi [415 MPa] min | 30 ksi [205 MPa] min | 30% minuke |
Nā Waiwai Paʻakikī
ʻAʻole kuhikuhi ke kūlana ASTM A335 i nā koi paʻakikī no nā paipu kila P5.
Hoʻāʻo Hoʻopālahalaha
Pono e hana ʻia ka hoʻāʻo pālahalaha a lawe ʻia kahi laʻana e like me nā koi kūpono o ASTM A999, a hiki ke hoʻohana ʻia nā wēlau paipu i ʻoki ʻia e like me nā laʻana.
Hoʻāʻo Kūlou
No ka paipu nona ke anawaena ma mua o NPS 25 a ʻo ka lakio o ke anawaena i ka mānoanoa o ka paia he 7.0 a emi mai paha, e hoʻokau ʻia i ka hoʻāʻo kūlou ma kahi o ka hoʻāʻo pālahalaha.
E pelu ʻia nā ʻāpana hoʻāʻo kūlou ma ka mahana o ka lumi a hiki i 180° me ka ʻole o ka māwae ʻana ma waho o ka ʻāpana i kūlou ʻia. ʻO ke anawaena o loko o ke kūlou he 1 ʻīniha [25 mm].
helehelena
Pono ka ʻili o ka paipu kila e laumania a like hoʻi, me ka ʻole o nā ʻōpala, nā humuhumu, nā ʻūhā, nā haehae, a i ʻole nā ʻāpana liʻiliʻi.
Inā ʻoi aku ka hohonu o kekahi kīnā ma mua o 12.5% o ka mānoanoa o ka paia maʻamau a i ʻole inā ʻoi aku ka mānoanoa o ka paia i koe ma lalo o ka mānoanoa i kuhikuhi ʻia, e manaʻo ʻia ua hemahema ka ʻāpana.
Ke mau nei ka mānoanoa o ka paia i koe i loko o nā palena i kuhikuhi ʻia, hiki ke wehe ʻia ke kīnā ma ka wili ʻana.
Inā ʻoi aku ka mānoanoa o ka paia i koe ma mua o ka palena iki i koi ʻia, e hoʻoponopono ʻia ke kīnā ma ka hoʻopili ʻana a i ʻole e wehe ʻia ma ka ʻoki ʻana.
Ke ahonui ʻana o ke anawaena
No nā paipu i kauoha ʻia e NPS [DN] a i ʻole ke anawaena o waho, ʻaʻole e ʻoi aku nā ʻokoʻa o ke anawaena o waho ma mua o nā koi i hōʻike ʻia ma ka papa ma lalo nei:
| Mea Hoʻolālā NPS [DN] | Nā ʻokoʻa i ʻae ʻia | |
| i loko. | mm | |
| 1/8 a i 1 1/2 [6 a i 40], ʻīniha. | ±1/64 [0.015] | ±0.40 |
| Ma luna o 1 1/2 a i 4 [40 a 100], ʻīniha. | ±1/32 [0.031] | ±0.79 |
| Ma luna o 4 a 8 [100 a 200], ʻīniha. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Ma luna o 8 a 12 [200 a 300], ʻīniha. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Ma luna o 12 [300] | ±1% o ke anawaena waho i kuhikuhi ʻia | |
No ka paipu i kauoha ʻia i ke anawaena o loko, ʻaʻole e ʻokoʻa ke anawaena o loko ma mua o 1% mai ke anawaena o loko i kuhikuhi ʻia.
Nā Hoʻomanawanui Mānoanoa o ka Paia
Ma waho aʻe o ka palena huna o ka mānoanoa o ka paia no ka paipu i kau ʻia e ka palena ma ke kaumaha ma ASTM A999, ʻo ka mānoanoa o ka paia no ka paipu ma kekahi wahi e pono i loko o nā ʻae ʻia i kuhikuhi ʻia ma ka papa ma lalo nei:
| Mea Hoʻolālā NPS [DN] | Ke ahonui, % ʻano i kuhikuhi ʻia |
| 1/8 a i 2 1/2 [6 a i 65] me nā lakio t/D āpau | -12.5 - +20.0 |
| Ma luna o 2 1/2 [65], t/D ≤ 5% | -12.5 - +22.5 |
| Ma luna o 2 1/2, t/D ＞ 5% | -12.5 - +15.0 |
| t = Mānoanoa o ka paia i kuhikuhi ʻia; D = Anawaena waho i kuhikuhi ʻia. | |
Hoʻohana nui ʻia nā paipu kila ASTM A335 P5 i nā ʻōnaehana paipu e hana ana ma lalo o nā kūlana mahana kiʻekiʻe a me ke kaomi kiʻekiʻe.
Ma muli o ko lākou kūpaʻa maikaʻi loa i ka mahana kiʻekiʻe a me nā waiwai mechanical, hoʻohana nui ʻia lākou i nā ʻoihana petrochemical, hana mana, a me ka hoʻomaʻemaʻe.
ʻO nā noi kikoʻī e komo pū me:
- Nā paipu paila
- Nā mea hoʻololi wela
- Nā laina hana petrochemical
- Nā paipu hana mana
- Nā ipu kaomi paila
| ASME | ASTM | EN | JIS |
| ASME SA335 P5 | ASTM A213 T5 | EN 10216-2 X11CrMo5+I | ʻO JIS G 3458 STPA25 |
Mea Hana:ʻO nā paipu kila ASTM A335 P5 a me nā mea hoʻohui;
Nui:1/8" a 24", a i ʻole i hoʻopilikino ʻia e like me kāu mau koi;
Lōʻihi:Ka lōʻihi kaulele a ʻokiʻoki paha e kauoha;
Pūʻolo:Uhi ʻeleʻele, nā wēlau beveled, nā pale welau paipu, nā pahu lāʻau, a pēlā aku.
Kākoʻo:Palapala hōʻoia IBR, nānā TPI, MTC, ʻoki ʻana, hana ʻana, a me ka hoʻopilikino ʻana;
MOQ:1 mika;
Nā Kūlana Uku:T/T a i ʻole L/C;
Kumukūʻai:E leka uila mai iā mākou no nā kumukūʻai paipu kila T11 hou loa.
