Theko ea Tlholisano Astm Standard Seamless Steel Pipe
Re ikemiselitse ho fana ka thuso e bonolo, e bolokang nako le ea ho boloka chelete hang-hang ea bareki bakeng sa Competitive Price Astm Standard Seamless Steel Pipe, Re tšepa ka tieo ho u sebeletsa le khoebo ea hau e nyane ka qalo e ntle. Haeba ho e-na le ntho leha e le efe eo re ka khonang ho u etsetsa eona ka bouena, re tla thabela ho etsa joalo ho feta tekano. Rea u amohela setsing sa rona sa tlhahiso bakeng sa ho ema.
Re ikemiselitse ho fana ka thuso e bonolo, e bolokang nako le ho boloka chelete hang-hang ea bareki bakeng saphala ea tšepe ea motsoako, Liphaephe tsa Boiler, Pipe ea tšepe ea carbon, Pipe ea tšepe ea Carbon e se nang Mokotla, phala ea tšepe e se nang moroalo, SMLS, Re itlhompha re le k'hamphani e nang le sehlopha se matla sa litsebi tse nang le boiphihlelo le boiphihlelo khoebong ea machabeng, nts'etsopele ea khoebo le nts'etsopele ea lihlahisoa. Ho feta moo, k'hamphani e lula e ikhethile har'a bahlolisani ba eona ka lebaka la maemo a holimo a boleng ba tlhahiso, le katleho ea eona le ho feto-fetoha ha ts'ehetso ea khoebo.
Kakaretso
Kopo
Haholo-holo e sebelisoa ho etsa tšepe ea boleng bo holimo ea carbon, alloy structural steel le tšepe e sa cheseheng mocheso.phala ea tšepe e se nang moroalos bakeng sa khatello e phahameng le holim'a lipeipi tsa boiler tsa mouoane.
Haholo-holo e sebelisoa bakeng sa tšebeletso ea khatello e phahameng le mocheso o phahameng oa boiler (Superheater tube, reheater tube, air guide tube, main steam tube for high and Ultra high pressure boilers). Tlas'a ketso ea mocheso o phahameng oa mocheso oa mocheso le mouoane oa metsi, tube e tla oxidize le ho senya. Ho hlokahala hore phala ea tšepe e be le nako e telele ea nako e telele, e hanyetsanang haholo le oxidation le corrosion, le botsitso bo botle ba sebopeho.
Kereiti e ka Sehloohong
Kereiti ea boleng bo phahameng ba tšepe ea sebopeho sa carbon: 20g, 20mng, 25mng
Kereiti ea tšepe ea sebopeho sa motsoako: 15mog, 20mog, 12crmog, 15crmog, 12cr2mog, 12crmovg, 12cr3movsitib, joalo-joalo.
Mophato oa tšepe e sa keneleng mocheso: 1cr18ni9 1cr18ni11nb
Karolo ea Lik'hemik'hale
Kereiti | Boleng Sehlopha | Thepa ea Lik'hemik'hale | ||||||||||||||
C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | Nd | Mo | B | Als” | ||
不大于 | 不小于 | |||||||||||||||
Q345 | A | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.30 | 0.50 | 0.20 | 0.012 | 0.10 | - | - | |||
B | 0.035 | 0.035 | ||||||||||||||
C | 0.030 | 0.030 | 0.07 | 0.15 | 0.20 | 0.015 | ||||||||||
D | 0.18 | 0.030 | 0.025 | |||||||||||||
E | 0.025 | 0.020 | ||||||||||||||
Q390 | A | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.07 | 0.20 | 0.20 | 0.3. | 0.50 | 0.20 | 0.015 | 0.10 | - | - |
B | 0.035 | 0.035 | ||||||||||||||
C | 0.030 | 0.030 | 0,015 | |||||||||||||
D | 0.030 | 0.025 | ||||||||||||||
E | 0.025 | 0.020 | ||||||||||||||
Q42O | A | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.07 | 0.2. | 0.20 | 0.30 | 0.80 | 0.20 | 0.015 | 0.20 | - | - |
B | 0.035 | 0.035 | ||||||||||||||
C | 0.030 | 0.030 | 0.015 | |||||||||||||
D | 0.030 | 0.025 | ||||||||||||||
E | 0.025 | 0.020 | ||||||||||||||
Q46O | C | 0.20 | 0.60 | 1.80 | 0.030 | 0.030 | 0.11 | 0.20 | 0.20 | 0.30 | 0.80 | 0.20 | 0.015 | 0.20 | 0.005 | 0.015 |
D | 0.030 | 0.025 | ||||||||||||||
E | 0.025 | 0.020 | ||||||||||||||
Q500 | C | 0.18 | 0.60 | 1.80 | 0.025 | 0.020 | 0.11 | 0.20 | 0.20 | 0.60 | 0.80 | 0.20 | 0.015 | 0.20 | 0.005 | 0.015 |
D | 0.025 | 0.015 | ||||||||||||||
E | 0.020 | 0.010 | ||||||||||||||
Q550 | C | 0.18 | 0.60 | 2.00 | 0.025 | 0,020 | 0.11 | 0.20 | 0.20 | 0.80 | 0.80 | 0.20 | 0.015 | 0.30 | 0.005 | 0.015 |
D | 0.025 | 0,015 | ||||||||||||||
E | 0.020 | 0.010 | ||||||||||||||
Q62O | C | 0.18 | 0.60 | 2.00 | 0.025 | 0.020 | 0.11 | 0.20 | 0.20 | 1.00 | 0.80 | 0.20 | 0.015 | 0.30 | 0.005 | 0.015 |
D | 0.025 | 0.015 | ||||||||||||||
E | 0.020 | 0.010 | ||||||||||||||
Ntle le limaraka tsa Q345A le Q345B, tšepe e lokela ho ba le bonyane karolo e le 'ngoe ea lijo-thollo tse hloekisitsoeng Al, Nb, V, le Ti. Ho ea ka litlhoko, mofani oa thepa a ka eketsa karolo e le 'ngoe kapa tse ngata tsa lijo-thollo tse hloekisitsoeng, boleng bo phahameng ka ho fetisisa E lokela ho finyella litlhoko tse tafoleng. Ha li kopantsoe, Nb + V + Ti <0.22% °Bakeng sa Q345, Q390, Q420 le Q46O limaraka, Mo + Cr <0.30% oHa sehlopha ka seng sa Cr le Ni se sebelisoa e le karolo e setseng, litaba tsa Cr le Ni ha lia lokela ho e be ho feta 0.30%; ha e hloka ho eketsoa, litaba tsa eona li lokela ho fihlela litlhoko tse tafoleng kapa ho khethoa ke mofani oa thepa le moreki ka lipuisano. J Haeba mofani wa thepa a ka netefatsa hore naetrojene e kgotsofatsa ditlhoko tse tafoleng, tshekatsheko ya diteng tsa naetrojene e ka nna ya se etswe. Haeba Al, Nb, V, Ti le lisebelisoa tse ling tsa alloy tse nang le naetrojene fixation li kenngoa ka tšepe, litaba tsa naetrojene ha li na moeli. Likahare tsa ho lokisa naetrojene li lokela ho boleloa setifikeiting sa boleng. 'Ha u sebelisa aluminium kaofela, kakaretso ea aluminium AIt ^ 0.020% B |
Thepa ea Mechini
No | Kereiti | Thepa ea Mechini | ||||
|
| Tensile | Khefutsa | Eketsa | Tšusumetso (J) | Handness |
1 | 20G | 410- | ≥ | 24/22% | 40/27 | - |
2 | 20MnG | 415- | ≥ | 22/20% | 40/27 | - |
3 | 25MnG | 485- | ≥ | 20/18% | 40/27 | - |
4 | 15MoG | 450- | ≥ | 22/20% | 40/27 | - |
6 | 12CrMoG | 410- | ≥ | 21/19% | 40/27 | - |
7 | 15CrMoG | 440- | ≥ | 21/19% | 40/27 | - |
8 | 12Cr2MoG | 450- | ≥ | 22/20% | 40/27 | - |
9 | 12Cr1MoVG | 470- | ≥ | 21/19% | 40/27 | - |
10 | 12Cr2MoWVTiB | 540- | ≥ | 18/-% | 40/- | - |
11 | 10Cr9Mo1VNbN | ≥ | ≥ | 20/16% | 40/27 | ≤ |
12 | 10Cr9MoW2VNbBN | ≥ | ≥ | 20/16% | 40/27 | ≤ |
Mamello
Botenya ba Lebota le Bophara ba Kantle:
Haeba ho se na litlhoko tse khethehileng, phaephe e tla tsamaisoa e le bophara bo tloaelehileng ba kantle le botenya ba lebota bo tloaelehileng. Joalo ka leqephe la ho latela
Tlhaloso ea lihlopha | Mokhoa oa ho etsa | Boholo ba phala | Mamello | |||
Sekolo se tloaelehileng | Kereiti e phahameng | |||||
WH | Peipi e kentsoeng e chesang (extrude) | Norminal outer Diameter (D) | <57 | Setšoantšo sa 0.40 | ±0,30 | |
57 〜325 | SW35 | ±0.75%D | ±0.5%D | |||
S>35 | ±1%D | ±0.75%D | ||||
>325 le 6. | + 1%D kapa + 5.Nka e nyenyane 一2 | |||||
> 600 | + 1%D kapa + 7,Nka e nyenyane 一2 | |||||
Tloaelehileng Lebota Botenya (S) | <4.0 | ±|・丨) | ±0.35 | |||
>4.0-20 | + 12,5%S | ±10%S | ||||
>20 | DV219 | ±10%S | ±7.5%S | |||
心219 | + 12,5%S -10%S | 土10%S |
WH | Pipe ea ho atolosa mocheso | Norminal outer Diameter (D) | kaofela | ±1%D | ± 0.75%. |
Tloaelehileng Lebota Botenya (S) | kaofela | + 20%S -10%S | + 15%S -io%s | ||
WC | E batang (e phuthoa) Ppipe | Norminal outer Diameter (D) | <25.4 | ±L1j | - |
>25.4 〜4() | ±0.20 | ||||
> 40 〜50 | |:0.25 | - | |||
> 50 〜60 | ±0.30 | ||||
> 60 | ±0.5%D | ||||
Tloaelehileng Lebota Botenya (S) | <3.0 | ±0.3 | ±0.2 | ||
>3.0 | S | ±7.5%S |
Bolelele:
Bolelele bo tloaelehileng ba lipeipi tsa tšepe ke 4 000 mm ~ 12 000 mm. Ka mor'a ho buisana pakeng tsa mofani oa thepa le moreki, 'me u tlatse konteraka, e ka tsamaisoa liphaephe tsa tšepe tse nang le bolelele bo fetang 12 000 mm kapa bokhutšoane ho feta I 000 mm empa e se khutšoanyane ho feta 3 000 mm; bolelele bo bokhuts'oanyane Palo ea lipeipi tsa tšepe tse ka tlase ho 4,000 mm empa e seng ka tlase ho 3,000 mm ha e na ho feta 5% ea palo eohle ea lipeipi tsa tšepe tse fanoeng.
Boima ba thomello:
Ha phala ea tšepe e fanoa ho ea ka bophara bo ka ntle ba lebitso le botenya ba lebota la lebitso kapa bophara bo ka hare bo ka hare le botenya ba lerako, phala ea tšepe e fanoa ho latela boima ba 'nete. E ka boela ea fanoa ho ea ka boima ba theory.
Ha phala ea tšepe e fanoa ho ea ka bophara bo ka ntle ba lebitso le bonyane botenya ba lerako, phala ea tšepe e fanoa ho latela boima ba 'nete; mekhatlo ea phepelo le tlhokahalo e buisana. 'Me e bontšitsoe konteraka. Pipe ea tšepe e ka boela ea fanoa ho ea ka boima ba theory.
Boima ba 'mele:
Ho ea ka litlhoko tsa moreki, ka mor'a ho buisana pakeng tsa mofani oa thepa le moreki, 'me tumellanong, ho kheloha pakeng tsa boima ba' mele le boima ba khopolo ea pipe ea tšepe ea pelehi ho tla finyella litlhoko tse latelang:
a) Pipe ea tšepe e le 'ngoe: ± 10%;
b) Sehlopha se seng le se seng sa liphaephe tsa tšepe tse nang le bonyane ba boholo ba 10 t: ± 7.5%.
Tlhokahalo ea Teko
Teko ea Hydraustatic:
Pipe ea tšepe e lokela ho lekoa ka hydraulically ka bonngoe. Khatello e phahameng ea teko ke 20 MPa. Tlas'a khatello ea teko, nako ea botsitso ha ea lokela ho ba ka tlase ho 10 s, 'me pipe ea tšepe ha ea lokela ho tsoa.
Kamora hore mosebelisi a lumele, tlhahlobo ea hydraulic e ka nkeloa sebaka ke tlhahlobo ea eddy ea hajoale kapa tlhahlobo ea ho lutla ha magnetic flux.
Teko e sa Senyeheng:
Liphaephe tse hlokang tlhahlobo e eketsehileng li lokela ho hlahlojoa ka ultrasonically ka bonngoe. Ka mor'a hore puisano e hloke tumello ea mokga mme e hlalositsoe konteraka, liteko tse ling tse sa senyeheng li ka eketsoa.
Teko ea ho batalatsa:
Li-tubes tse nang le bophara ba ka ntle ho feta 22 mm li tla etsoa teko ea ho batalla. Ha ho na delamination e bonahalang, matheba a masoeu, kapa litšila tse lokelang ho etsahala nakong ea teko eohle.
Flaring Test:
Ho ea ka litlhoko tsa moreki le tse boletsoeng ka konteraka, phala ea tšepe e nang le bophara bo ka ntle ≤76mm le botenya ba lerako ≤8mm e ka etsoa tlhahlobo ea mollo . Teko e ne e etsoa ka mocheso oa kamore ka taper ea 60 °. Kamora ho phatloha, sekhahla sa ho phatloha ha bophara ba ka ntle se lokela ho fihlela litlhoko tsa tafole e latelang, 'me lisebelisoa tsa tlhahlobo ha lia lokela ho bonts'a mapheo kapa mapheo.
Mofuta oa tšepe
| Sekhahla sa ho phatloha ka ntle sa phala ea tšepe /% | ||
Diameter ka hare / Kantle Diameter | |||
<0.6 | >0.6 〜0.8 | >0.8 | |
Litšepe tsa boleng bo phahameng ba carbon structural | 10 | 12 | 17 |
Mohaho alloy tšepe | 8 | 10 | 15 |
• Bophara bo ka hare bo baloa bakeng sa sampuli. |