Ho ASTM A213, ho phaella ho ditlhoko tsa thepa ya ho thaepa le ho thatafala, diteko tse latelang le tsona di a hlokahala: Teko ya ho Foforetsa le Teko ya ho Kobeha.
ASTM A335 P22(ASME SA335 P22) ke phaephe ea tšepe e se nang sekoli ea chromium-molybdenum alloy e fanang ka litšebeletso tsa mocheso o phahameng, e sebelisoang haholo holiboiler, li-superheater, le mochesoba fapanyetsanang.
E na le 1.90%ho fihlela ho 2.60% chromium le 0.87% ho isa ho 1.13% molybdenum, e na le ho hanyetsa mocheso hantle, 'me e boetse e loketse bakeng sa ho kobeha, ho flanging, kapa ts'ebetso e tšoanang ea ho bopa.
Nomoro ea UNS: K21590.
ASTM A335 ke tlhaloso e tloaelehileng bakeng sa liphaephe tsa tšepe ea tšepe e se nang seamless tse reretsoeng tšebeletso ea mocheso o phahameng. E sebelisoa haholo ho li-boiler, li-superheater, li-heat exchanger, le lits'ebetsong tse ling tse sebetsang tlas'a maemo a mocheso o phahameng le khatello e phahameng. Ntle le Sehlopha sa P22, mefuta e meng e tloaelehileng ea alloy e kenyelletsaP5 (UNS K41545), P9 (UNS K90941), P11 (UNS K11597)leP91 (UNS P90901).
Moetsi le Boemo
Liphaephe tsa tšepe tsa ASTM A335 P22 li lokela ho etsoa ka mokhoa o se nang sekoli 'me li lokela ho qetoa ka mocheso kapa ka serame ka mokhoa oa ho qetela.
Liphaephe tsa tšepe tse se nang seamlesske liphaephe tse se nang li-weld, tse fanang ka liphaephe tsa tšepe tsa P22 botsitso le ts'epo e phahameng libakeng tse nang le mocheso o phahameng le khatello e phahameng.
Kalafo ea Mocheso
Liphaephe tsa tšepe tsa P22 li lokela ho futhumatsoa hape le ho phekoloa ka mocheso ka ho kenya li-annealing ka botlalo, ho kenya li-annealing ka mokhoa o sa fetoheng mochesong, kapa ho normalizing le ho futhumatsa.
| Sehlopha | Mofuta oa phekolo ea mocheso | Ho Hlophisoa ha Mocheso kapa Mocheso o sa Bonahaleng |
| ASTM A335 P22 | anneal e felletseng kapa e sa fetoheng mochesong | — |
| tloaeleha le ho halefa | 1250 ℉ [675 ℃] mets |
Chromium (Cr) le molybdenum (Mo) ke likarolo tsa bohlokoa tsa ho kopanya tšepe ea P22, tse ntlafatsang matla a mocheso o phahameng, ho hanyetsa oxidation le ho tšoarella. Sebopeho se ikhethileng sa lik'hemik'hale se bontšitsoe ka tlase:
| Sehlopha | Sebopeho, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P22 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | 0.025 max | 0.025 max | 0.50 max | 1.90 ~ 2.60 | 0.87 ~ 1.13 |
Liteko tsa thepa ea mechini tsa P22 li tla etsoa ho latela litlhoko tse amehang tsa ASTM A999.
Matlo a ho Tenyetseha
| Sehlopha | ASTM A335 P22 | |
| Matla a ho teneha, bonyane | 60 ksi [415 MPa] | |
| Matla a tlhahiso, bonyane | 30 ksi [205 MPa] | |
| Ho lelefatsa ka lisenthimithara tse 2 kapa 50 mm (kapa 4D), metsotso | Longitudinal | Ho fapanyetsana |
| Bolelele bo fokolang ba motheo bakeng sa lebota la 5/16 ka hare ho [8 mm] le ho feta ka botenya, liteko tsa strip, le bakeng sa boholo bohle bo bonyenyane bo lekiloeng karolong e felletseng. | 30% | 20% |
| Ha ho sebediswa mohlala o tloaelehileng wa bolelele ba gage ba 2 in kapa 50 mm kapa mohlala o monyane ka ho lekana o nang le bolelele ba gage bo lekanang le 4D (bophara ba makgetlo a 4) | 22% | 14% |
| Bakeng sa liteko tsa strip, ho tla etsoa phokotso bakeng sa phokotso e 'ngoe le e 'ngoe ea 1/32 ho [0.8 mm] ea botenya ba lebota ka tlase ho 1/32 in. [8 mm] ho tsoa ho bolelele ba mantlha ba lintlha tse latelang tsa peresente. | 1.50% | 1.00% |
Matlotlo a ho tiea
Tekanyetso ea ASTM A335 ha e hlalose litlhoko tse itseng tsa ho thatafala bakeng sa liphaephe tsa tšepe tsa P22.
Lintho Tse Ling tsa Teko
Mamello ea bophara
Bakeng sa phaephe e odarilweng ke NPS [DN] kapa bophara ba kantle, diphetoho tsa bophara ba kantle di ke ke tsa feta ditlhoko tse bontshitsweng tafoleng e ka tlase:
| Moqapi oa NPS [DN] | Mefuta e Lumelloang | |
| ka hare. | mm | |
| 1/8 ho isa ho 1 1/2 [6 ho isa ho 40], lisenthimithara. | ±1/64 [0.015] | ± 0.40 |
| Ho feta 1 1/2 ho isa ho 4 [40 ho isa ho 100], lisenthimithara. | ±1/32 [0.031] | ± 0.79 |
| Ho feta 4 ho isa ho 8 [100 ho isa ho 200], lisenthimithara. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Ho feta 8 ho isa ho 12 [200 ho isa ho 300], lisenthimithara. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Ba fetang 12 [300] | ± 1% ea bophara bo boletsoeng ka ntle | |
Bakeng sa phaephe e laetsoeng ho ba bophara ba kahare, bophara ba kahare ha boa lokela ho fapana ho feta 1% ho tloha bophara bo boletsoeng ba kahare.
Mamello ea Botenya ba Lebota
Ntle le moedi o sa bonahaleng wa botenya ba lebota bakeng sa phaephe o behilweng ke moedi wa boima ho ASTM A999, botenya ba lebota bakeng sa phaephe neng kapa neng bo tla ba ka hara mamello e boletsweng tafoleng e ka tlase:
| Moqapi oa NPS [DN] | Mamello |
| 1/8 ho isa ho 2 1/2 [6 ho isa ho 65] ho kenyeletsoa le dikarolelano tsohle tsa t/D | -12.5 % ~ +20.0 % |
| Kaholimo ho 2 1/2 [65], t/D ≤ 5% | -12.5 % ~ +22.5 % |
| Kaholimo 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:liphaephe le lisebelisoa tsa tšepe tse se nang mohele tsa ASTM A335 P22;
Boholo:1/8" ho isa ho 24", kapa e etselitsoe ho latela litlhoko tsa hau;
Bolelele:Bolelele bo sa reroang kapa sehiloeng ho latela odara;
Sephutheloana:Sekoahelo se setšo, lipheletso tse betliloeng, litšireletso tsa pheletso ea liphaephe, mabokose a lehong, jj.
Tšehetso:Setifikeiti sa IBR, tlhahlobo ea TPI, MTC, ho seha, ho sebetsana le eona le ho e etsa ka tsela e ikhethileng;
MOQ:1 m;
Melao ea Tefo:T/T kapa L/C;
Theko:Ikopanye le rona bakeng sa litheko tsa morao-rao tsa liphaephe tsa tšepe tsa T11;
