MuASTM A213, pamusoro pezvinodiwa zvehunhu hwekusimba uye kuomarara, bvunzo dzinotevera dzinodiwawo: Kuedza Kutsetseka uye Kuedza Kukombama.
ASTM A335 P22(ASME SA335 P22) ipombi yesimbi ye chromium-molybdenum alloy ine musono uye inopisa zvakanyanya, inoshandiswa zvakanyanya mumabhoyira, ma superheater, uye kupisavanotsinhana.
Ine 1.90%kusvika ku2.60% chromium uye 0.87% kusvika 1.13% molybdenum, ine simba rekudzivirira kupisa, uye yakakodzerawo kukotama, kuputira, kana mamwe mabasa akafanana ekuumba.
Nhamba yeUNS: K21590.
ASTM A335 ndiyo nzira yakajairika yekuisa mapaipi esimbi akagadzirwa nesimbi isina musono akagadzirirwa kushanda pakupisa kwakanyanya. Inoshandiswa zvakanyanya mumaboiler, masuperheater, maheat exchangers, uye mamwe maapplication anoshanda mumamiriro ekupisa kwakanyanya uye ekumanikidzwa kwakanyanya. Kuwedzera kuGiredhi P22, mamwe magiredhi esimbi akajairika anosanganisiraP5 (UNS K41545), P9 (UNS K90941), P11 (UNS K11597)uyeP91 (UNS P90901).
Mugadziri uye Mamiriro
Mapaipi esimbi eASTM A335 P22 anofanira kugadzirwa nenzira isina musono uye anofanira kunge akagadzirwa nekupisa kana kudhonzwa nechando nekupedzisa.
Mapaipi esimbi asina musonomapaipi asina welds, izvo zvinopa mapaipi esimbi eP22 kugadzikana kwakanyanya uye kuvimbika munzvimbo dzinopisa zvakanyanya uye dzine kumanikidzwa kwakanyanya.
Kurapa Kupisa
Mapaipi esimbi eP22 anofanira kudziiswazve uye kugadziriswa nekupisa nekushandisa zvizere, isothermal annealing, kana normalizing uye tempering.
| Giredhi | Rudzi rwekupisa | Kupisa kana Kupisa Kusina Kukosha |
| ASTM A335 P22 | anneal yakazara kana kuti isingatsvedzere | — |
| kugadzirisa uye kushatirwa | 1250 ℉ [675 ℃] maminiti |
Chromium (Cr) uye molybdenum (Mo) zvinhu zvakakosha muP22 steel, zvichivandudza simba rekupisa kwakanyanya, kuramba oxidation, uye kugara kwenguva refu. Makemikoro chaiwo anoratidzwa pazasi:
| Giredhi | Kuumbwa, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | 0.025 yepamusoro | 0.025 yepamusoro | 0.50 yakakwira | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
Kuedzwa kwehunhu hwemakanika hweP22 kunofanirwa kuitwa zvichienderana nezvinodiwa zveASTM A999.
Zvivakwa zveKusimba
| Giredhi | ASTM A335 P22 | |
| Simba rekusimba, min | 60 ksi [415 MPa] | |
| Simba rekupa, min | 30 ksi [205 MPa] | |
| Kureba kwe 2 in. kana 50 mm (kana 4D), min | Kureba | Kuchinja-chinja |
| Kureba kwemadziro emadziro ane ukobvu hwe5/16 mu [8 mm] zvichikwira, bvunzo dzemitsetse, uye kune ese madiki akaedzwa muchikamu chakazara. | 30% | 20% |
| Kana chifananidzo chedenderedzwa che 2 in kana 50 mm chakareba kana kuti chidiki zvakanyanya chine urefu hwe 4D (ka4 dhayamita) chikashandiswa | 22% | 14% |
| Pakuyedzwa kwezvidimbu, kubviswa kwechikamu chimwe nechimwe che 1/32 mu [0.8 mm] pakukora kwemadziro pasi pe 1/32 in. [8 mm] kubva pakureba kwepakati pezvikamu zvinotevera kunofanira kuitwa. | 1.50% | 1.00% |
Zvimiro zveKuoma
Mutemo weASTM A335 hautsananguri zvinodiwa pakuomarara kwemapaipi esimbi eP22.
Zvimwe Zvinhu Zvekuyedza
Dhayamita Kushivirira
Pamapaipi akarairwa neNPS [DN] kana dhayamita yekunze, kusiyana kwedhayamita yekunze hakufanirwe kudarika zvinodiwa zvinoratidzwa mutafura iri pazasi:
| Mugadziri weNPS [DN] | Misiyano Inobvumidzwa | |
| mukati. | mm | |
| 1/8 kusvika 1 1/2 [6 kusvika 40], inchi. | ±1/64 [0.015] | ± 0.40 |
| Inopfuura 1 1/2 kusvika 4 [40 kusvika 100], inchi. | ±1/32 [0.031] | ± 0.79 |
| Kupfuura 4 kusvika 8 [100 kusvika 200], inchi. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Kupfuura 8 kusvika 12 [200 kusvika 300], inchi. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Vanopfuura 12 [300] | ± 1% yedhayamita yekunze yakatarwa | |
Kana mapaipi akarongwa kuita dhayamita yemukati, dhayamita yemukati haifanirwe kusiyana ne1% kubva padhayamita yemukati yakatarwa.
Kushivirira Ukobvu hweMadziro
Pamusoro pekuganhurira kusina kujeka kweukobvu hwemadziro epombi hunokonzerwa nekuganhurira kwehuremu muASTM A999, ukobvu hwemadziro epombi chero nguva hunofanira kunge huri mukati memiganhu yakatarwa mutafura iri pazasi:
| Mugadziri weNPS [DN] | Kushivirira |
| 1/8 kusvika 2 1/2 [6 kusvika 65] kusanganisira zviyero zvese zve t/D | -12.5 % ~ +20.0 % |
| Pamusoro pe 2 1/2 [65], t/D ≤ 5% | -12.5 % ~ +22.5 % |
| Pamusoro pe 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 |
Zvinyorwa:mapaipi esimbi asina musono eASTM A335 P22 uye zvinosungirirwa;
Saizi:1/8" kusvika 24", kana kuti yakagadzirirwa zvinoenderana nezvaunoda;
Kureba:Kureba kusingatarisirwi kana kuchekwa zvichienderana nekuraira;
Kurongedza:Kupfeka kwakasviba, magumo akachekwa, zvidziviriro zvemapombi, mabhokisi emapuranga, nezvimwewo.
Tsigiro:Chitupa cheIBR, kuongororwa kweTPI, MTC, kucheka, kugadzirisa, uye kugadzirisa;
MOQ: (Zvinyorwa zveMOQ):1 m;
Mitemo Yekubhadhara:T/T kana L/C;
Mutengo:Tibatei kuti muwane mitengo yemapaipi esimbi eT11 yazvino;
