Ma ASTM A213, ma waho aʻe o nā koi no nā waiwai tensile a me ka paʻakikī, pono pū ʻia nā hoʻokolohua aʻe: Hoʻāʻo Palahalaha a me ka Hoʻāʻo Bend.
ASTM A335 P22(ASME SA335 P22) he paipu kila chromium-molybdenum alloy seamless lawelawe wela kiʻekiʻe, i hoʻohana nui ʻia manā paila, nā mea hoʻomehana nui, a me ka welanā mea hoʻololi.
Aia i loko he 1.90%i ka 2.60% chromium a me 0.87% a i 1.13% molybdenum, he kūpaʻa wela maikaʻi loa, a kūpono hoʻi no ke kulou ʻana, flanging, a i ʻole nā hana hana like.
Helu UNS: K21590.
ʻO ASTM A335 ke kikoʻī maʻamau no nā paipu hao hao ferritic seamless i manaʻo ʻia no ka lawelawe wela kiʻekiʻe. Hoʻohana nui ʻia ia i nā paila, nā superheaters, nā mea hoʻololi wela, a me nā noi ʻē aʻe e hana ana ma lalo o nā kūlana wela kiʻekiʻe a me ke kaomi kiʻekiʻe. Ma waho aʻe o ka Papa P22, ʻo nā papa hao hao maʻamau ʻē aʻe e komo pū meP5 (UNS K41545), P9 (UNS K90941), P11 (UNS K11597), a meP91 (UNS P90901).
Mea Hana a me ke Kūlana
Pono nā paipu kila ASTM A335 P22 e hana ʻia ma ke kaʻina hana humuhumu ʻole a e hoʻopau ʻia me ka wela a i ʻole ke anu me ka hana hoʻopau.
Nā paipu kila humuhumu ʻolehe mau paipu me ka ʻole o nā wili ʻia, e hāʻawi ana i nā paipu kila P22 me ke kūpaʻa kiʻekiʻe a me ka hilinaʻi i nā wahi mahana kiʻekiʻe a me ke kaomi kiʻekiʻe.
Ka Lapaʻau Wela
Pono e hoʻomehana hou ʻia nā paipu kila P22 a mālama ʻia me ka wela ma o ka hoʻomehana piha ʻana, ka hoʻomehana isothermal, a i ʻole ka hoʻomaʻamaʻa ʻana a me ka hoʻomāmā ʻana.
| Papa | ʻAno mālama wela | ʻO ka Subcritical Annealing a i ʻole ka mahana |
| ASTM A335 P22 | anneal piha a isothermal paha | — |
| hoʻomaʻamaʻa a hoʻonāukiuki | 1250 ℉ [675 ℃] min |
ʻO Chromium (Cr) a me molybdenum (Mo) nā mea hoʻohuihui koʻikoʻi i ke kila P22, e hoʻomaikaʻi ana i ka ikaika wela kiʻekiʻe, ke kūpaʻa oxidation, a me ke kūpaʻa. Ua hōʻike ʻia ke ʻano kemika kikoʻī ma lalo nei:
| Papa | Ka hoʻonohonoho ʻana, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | 0.025 ka palena kiʻekiʻe | 0.025 ka palena kiʻekiʻe | 0.50 ka palena kiʻekiʻe | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
Pono e hoʻokō ʻia nā hoʻāʻo waiwai mechanical o P22 e like me nā koi kūpono o ASTM A999.
Nā Waiwai Uʻi
| Papa | ASTM A335 P22 | |
| Ikaika tensile, min | 60 ksi [415 MPa] | |
| Ka ikaika hoʻopuka, min | 30 ksi [205 MPa] | |
| Elongation ma 2 ʻīniha a i ʻole 50 mm (a i ʻole 4D), min | ʻO ka lōʻihi | ʻĀwiliwili |
| ʻO ka elongation palena iki no ka paia 5/16 ʻīniha [8 mm] a ʻoi aku ka mānoanoa, nā hoʻāʻo ʻāpana, a no nā nui liʻiliʻi āpau i hoʻāʻo ʻia ma ka ʻāpana piha | 30% | 20% |
| Ke hoʻohana ʻia kahi ana poepoe maʻamau he 2 ʻīniha a i ʻole 50 mm ka lōʻihi o ke ana a i ʻole kahi hāpana liʻiliʻi like me ka lōʻihi o ke ana e like me 4D (4 manawa ke anawaena). | 22% | 14% |
| No nā hoʻāʻo ʻāpana, e hoʻemi ʻia no kēlā me kēia emi ʻana o ka mānoanoa o ka paia ma lalo o 1/32 ʻīniha [0.8 mm] mai ka elongation palena iki o nā helu pakeneka ma lalo nei. | 1.50% | 1.00% |
Nā Waiwai Paʻakikī
ʻAʻole kuhikuhi ke kūlana ASTM A335 i nā koi paʻakikī kikoʻī no nā paipu kila P22.
Nā Mea Hoʻāʻo ʻē aʻe
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.
Ka hoʻomanawanui ʻana i ka 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] | Hoʻomanawanui |
| 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% |
| ASME | ASTM | EN | DIN | JIS |
| ASME SA335 P22 | ASTM A213 T22 | DIN 10216-2 10CrMo9-10 | DIN 17175 10CrMo9-10 | ʻO JIS G 3458 STPA25 |
Mea Hana:ʻO nā paipu kila humuhumu ASTM A335 P22 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;
