I roto i te ASTM A213, hei tāpiritanga ki ngā whakaritenga mō ngā āhuatanga kume me te pakeke, e hiahiatia ana hoki ēnei whakamātautau e whai ake nei: Whakamātautau Papatahi me te Whakamātautau Piko.
ASTM A335 P22(ASME SA335 P22) he paipa maitai koranu chromium-molybdenum kore hononga, he mea whakamahi whānuitia i roto ingā kohua, ngā whakamahana nui, me te werangā kaiwhakawhitiwhiti
Kei roto ko te 1.90%ki te 2.60% chromium me te 0.87% ki te 1.13% molybdenum, he tino ātete ki te wera, ā, he pai hoki mō te piko, te flanging, me ngā mahi hanga rite.
Nama UNS: K21590.
Ko te ASTM A335 te paerewa mō ngā paipa maitai-konumohe ferritic kore hononga e whakamahia ana mō te mahi pāmahana teitei. He whānuitia te whakamahinga i roto i ngā kohua, ngā whakamahana nui, ngā whakawhiti wera, me ētahi atu tono e mahi ana i raro i ngā āhuatanga pāmahana teitei me te pēhanga teitei. Haunga te Wāhanga P22, ko ētahi atu wāhanga konumohe noa koP5 (UNS K41545), P9 (UNS K90941), P11 (UNS K11597), meP91 (UNS P90901).
Kaihanga me te Āhua
Me hanga ngā paipa maitai ASTM A335 P22 mā te tukanga tuimotu, ā, me whakakī wera, me tōia matao rānei me te maimoatanga whakaoti.
Ngā paipa maitai kore-tuituihe paipa kāhore he whakarewa, e whakarato ana i te pumau me te pono o ngā paipa maitai P22 i roto i ngā taiao pāmahana teitei me te pēhanga teitei.
Te Maimoatanga Wera
Me whakamahana anō ngā paipa maitai P22, ā, me whakamahana anō mā te whakamahana katoa, te whakamahana isothermal rānei, te whakataurite me te whakamahana rānei.
| Tau | Momo maimoatanga wera | Te Whakamahana, te Pāmahana rānei i raro i te Hiranga |
| ASTM A335 P22 | te whakamahana katoa, te whakamahana isothermal rānei | — |
| whakataurite me te whakangāwari | 1250 ℉ [675 ℃] meneti |
Ko te Chromium (Cr) me te molybdenum (Mo) ngā huānga whakarewa matua i roto i te maitai P22, e whakapai ake ana i te kaha pāmahana teitei, te ātete ki te waikura, me te roa. Kei raro nei te hanganga matū motuhake:
| Tau | Te hanganga, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | 0.025 mōrahi | 0.025 mōrahi | 0.50 mōrahi | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
Me whakahaere ngā whakamātautau āhuatanga ā-pūkaha o te P22 i runga anō i ngā whakaritenga e tika ana o te ASTM A999.
Ngā Āhuatanga Kume
| Tau | ASTM A335 P22 | |
| Kaha kume, min | 60 ksi [415 MPa] | |
| Te kaha o te tuku, min | 30 ksi [205 MPa] | |
| Te toronga i roto i te 2 inihi, 50 mm rānei (4D rānei), min | Roa | Whakapae |
| Te roanga iti rawa mō te pakitara 5/16 inihi [8 mm] me te matotoru ake, ngā whakamātautau rīpene, me ngā rahi iti katoa i whakamatautauria i te wāhanga katoa | 30% | 20% |
| Ina whakamahia he tauira porowhita paerewa he 2 inihi, he 50 mm rānei te roa, he tauira iti ake rānei te rahi me te roa o te ine he rite ki te 4D (4 ngā wā o te whānui) | 22% | 14% |
| Mō ngā whakamātautau rīpene, me tango he tangohanga mō ia hekenga 1/32 inihi [0.8 mm] o te matotoru o te pakitara i raro i te 1/32 inihi [8 mm] mai i te roanga iti rawa taketake o ngā ōrau e whai ake nei. | 1.50% | 1.00% |
Ngā Āhuatanga Pakari
Kāore te paerewa ASTM A335 e whakapūtā ana i ngā whakaritenga pakeke motuhake mō ngā paipa maitai P22.
Ētahi atu Tuemi Whakamātautau
Te Manawanui Diameter
Mō ngā paipa i tonoa e te NPS [DN] me te diameter o waho rānei, kaua ngā rerekētanga o te diameter o waho e neke ake i ngā whakaritenga e whakaaturia ana i te ripanga i raro nei:
| Kaitohu NPS [DN] | Ngā Huringa Whakaaetia | |
| i roto i | mm | |
| 1/8 ki te 1 1/2 [6 ki te 40], inihi. | ±1/64 [0.015] | ±0.40 |
| Neke atu i te 1 1/2 ki te 4 [40 ki te 100], inihi. | ±1/32 [0.031] | ±0.79 |
| Neke atu i te 4 ki te 8 [100 ki te 200], inihi. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Neke atu i te 8 ki te 12 [200 ki te 300], inihi. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Neke atu i te 12 [300] | ±1% o te diameter waho kua tohua | |
Mō ngā paipa kua whakaritea kia rite ki te diameter o roto, kaua te diameter o roto e neke atu i te 1% mai i te diameter o roto kua tohua.
Te Manawanui ki te Matotoru o te Pakitara
Haunga te herenga ā-pūmau o te matotoru o te pakitara mō ngā paipa i whakatakotoria e te herenga taumaha i roto i te ASTM A999, me noho te matotoru o te pakitara mō ngā paipa i tētahi wāhi ki roto i ngā manawanui kua tohua i te ripanga i raro nei:
| Kaitohu NPS [DN] | Manawanui |
| 1/8 ki te 2 1/2 [6 ki te 65] tae atu ki ngā ōwehenga t/D katoa | -12.5% ~ +20.0% |
| Neke atu i te 2 1/2 [65], t/D ≤ 5% | -12.5% ~ +22.5% |
| Neke atu i te 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 | JIS G 3458 STPA25 |
Rauemi:Ngā paipa me ngā hononga maitai kore hononga ASTM A335 P22;
Rahi:1/8" ki te 24", ka taea rānei te whakarite kia rite ki ō hiahia;
Roa:Te roa matapōkere, te tapahi rānei kia rite ki te tono;
Tākai:He paninga pango, he pito whakarara, he parenga pito paipa, he pouaka rakau, me ētahi atu.
Tautoko:Te tiwhikete IBR, te tirotiro TPI, te MTC, te tapahi, te tukatuka, me te whakaritenga;
MOQ:1 mita;
Ngā Ture Utu:T/T, L/C rānei;
Utu:Whakapā mai ki a mātou mō ngā utu hou mō ngā paipa maitai T11;
