Ho ASTM A213, ntle le litlhoko tsa thepa e thata le boima, liteko tse latelang li boetse lia hlokahala: Teko ea Flattening le Bend Test.
ASTM A335 P22(ASME SA335 P22) ke tšebeletso ea mocheso o phahameng e se nang seamless chromium-molybdenum alloy pipe, e sebelisoang haholoboilers, licheso tse matla, le mochesoba ananyang.
E na le 1.90%ho isa ho 2.60% chromium le 0.87% ho 1.13% molybdenum, e na le ho hanyetsa mocheso o babatsehang, hape e loketse bakeng sa ho kobeha, ho phunya, kapa ho etsa mesebetsi e tšoanang ea ho etsa.
Nomoro ea UNS: K21590.
ASTM A335 ke litekanyetso tse tloaelehileng bakeng sa liphaephe tsa tšepe tse seamless ferritic alloy-steel tse reretsoeng ts'ebeletso ea mocheso o phahameng. E sebelisoa haholo ho li-boilers, li-superheaters, li-heaters tsa mocheso, le lisebelisoa tse ling tse sebetsang tlas'a maemo a phahameng a mocheso le khatello e phahameng. Ntle le Kereiti ea P22, limaraka tse ling tse tloaelehileng tsa alloy li kenyelletsaP5 (UNS K41545), P9 (UNS K90941), P11 (UNS K11597), leP91 (UNS P90901).
Moetsi le Boemo
Liphaephe tsa tšepe tsa ASTM A335 P22 li tla etsoa ka mokhoa o se nang moeli 'me li tla felloa ke mocheso kapa li huleloe ka mokhoa o batang ka ho qeta kalafo.
Lipeipi tsa tšepe tse se nang moelike liphaephe tse se nang li-welds, tse fanang ka liphaephe tsa tšepe tsa P22 tse nang le botsitso bo phahameng le ho tšepahala libakeng tse phahameng tsa mocheso le khatello e phahameng.
Kalafo ea Mocheso
Liphaephe tsa tšepe tsa P22 li tla futhumatsoa hape 'me li tlosoe mocheso ka ho kolobisoa ka ho feletseng, ka ho futhumatsa mocheso, kapa ho tloaeleha le ho futhumatsa.
| Kereiti | Mofuta oa phekolo ea mocheso | Subcritical Annealing kapa Mocheso |
| ASTM A335 P22 | e tletseng kapa e isothermal | - |
| normalize le bohale | 1250 ℉ [675 ℃] mets |
Chromium (Cr) le molybdenum (Mo) ke likarolo tsa bohlokoa tsa motsoako ka tšepe ea P22, e ntlafatsang matla a mocheso o phahameng, ho hanyetsa oxidation, le ho tšoarella. Motsoako o khethehileng oa lik'hemik'hale o bontšitsoe ka tlase:
| Kereiti | Moetso, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0,15 | 0,30 ~ 0,60 | 0.025 boholo | 0.025 boholo | 0.50 max | 1,90 ~ 2,60 | 0.87 ~ 1.13 |
Liteko tsa thepa ea mochini tsa P22 li tla etsoa ho latela litlhoko tse amehang tsa ASTM A999.
Tensile Properties
| Kereiti | ASTM A335 P22 | |
| Matla a tsitsitseng, min | 60 ksi [415 MPa] | |
| Ho hlahisa matla, min | 30 ksi [205 MPa] | |
| Elongation ho 2 in. kapa 50 mm (kapa 4D), min | Longitudinal | Phatlalatso |
| Bophahamo bo tlase ba lebota la 5/16 ho [limilimithara tse 8] le ho feta ka botenya, liteko tsa ho hlobolisa, le litekanyo tsohle tse nyane tse lekiloeng ka botlalo. | 30% | 20% |
| Ha ho sebelisoa mokhoa o tloaelehileng oa ho pota-pota 2 ho kapa 50 mm bolelele kapa boholo bo lekanang le boholo bo lekanang le bolelele ba gage bo lekanang le 4D (makhetlo a 4 bophara) | 22% | 14% |
| Bakeng sa liteko tsa ho hlobolisa, phokotso bakeng sa karolo e 'ngoe le e 'ngoe ea 1/32 ho [0.8 limilimithara] ho fokotseha ha lebota ka tlase ho 1/32 in. | 1.50% | 1.00% |
Lintho tse thata
Tekanyetso ea ASTM A335 ha e hlakise litlhoko tse khethehileng tsa boima ba liphaephe tsa tšepe tsa P22.
Lintho Tse Ling Tsa Tlhahlobo
Mamello ea Diameter
Bakeng sa phaephe e laetsoeng ke NPS [DN] kapa bophara bo ka ntle, liphapano tsa bophara ba kantle li ke ke tsa feta litlhoko tse bontšitsoeng tafoleng e ka tlase:
| NPS [DN] Moqapi | Liphetoho tse lumelletsoeng | |
| ho. | mm | |
| 1/8 ho isa ho 1 1/2 [6 ho isa ho 40], inch. | ±1/64 [0.015] | ±0.40 |
| Ho feta 1 1/2 ho isa ho 4 [40 ho ea ho 100], inch. | ±1/32 [0.031] | ±0.79 |
| Ho feta 4 ho isa ho 8 [100 ho isa ho 200], inch. | -1/32 - +1/16 [-0.031 - +0.062] | -0,79 - +1,59 |
| Ho feta 8 ho isa ho 12 [200 ho isa ho 300], inch. | -1/32 - +3/32 [-0.031 - 0.093] | -0,79 - +2,38 |
| Ka holimo ho 12 [300] | ± 1% ea bophara bo boletsoeng ka ntle | |
Bakeng sa phala e laetsoeng hore e kene ka hare ho bophara, bophara ba ka hare bo ke ke ba fapana ho feta 1% ho tloha bophara bo boletsoeng ka hare.
Mamello ea Botenya ba Lerako
Ntle le moeli o hlakileng oa botenya ba lebota bakeng sa phala e behiloeng ke moeli oa boima ba 'mele ho ASTM A999, botenya ba lebota la phaephe sebakeng sefe kapa sefe bo tla ba ka har'a mamello e boletsoeng tafoleng e ka tlase:
| NPS [DN] Moqapi | Mamello |
| 1/8 ho isa ho 2 1/2 [6 ho isa ho 65] incl. likarolo tsohle tsa t/D | -12.5% ~ +20.0% |
| Ka holimo ho 2 1/2 [65], t/D ≤ 5% | -12.5% ~ +22.5% |
| Ka holimo ho 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 |
Boitsebiso:ASTM A335 P22 liphaephe tsa tšepe tse se nang moeli le lisebelisoa;
Boholo:1/8" ho isa ho 24", kapa e hlophisitsoeng ho latela litlhoko tsa hau;
Bolelele:Bolelele bo sa reroang kapa sehiloeng ho laela;
Sephutheloana:Ho roala ho ntšo, lipheletso tse betliloeng, litšireletseho tsa liphaephe, mabokose a lehong, jj.
Tšehetso:Setifikeiti sa IBR, tlhahlobo ea TPI, MTC, ho itšeha, ho sebetsa le ho e etsa;
MOQ:1 m;
Melao ea Tefo:T/T kapa L/C;
Theko:Ikopanye le rona bakeng sa litheko tsa morao-rao tsa lipeipi tsa tšepe tsa T11;
