Ifektri Ethengisa I-China Seamless Ferritic Alloy-Steel Pipe Yesevisi Yokushisa Okuphezulu I-ASTM A335 P11
Uhlolojikelele
Imiklomelo yethu izindleko eziphansi,ithimba lenzuzo eguqukayo,i-QC ekhethekile,izimboni ezinamandla,izinsizakalo ezisezingeni eliphezulu zepayipi lensimbi ye-alloy kubhayela, Samukela ngokufudumele wonke amakhasimende anentshisekelo ukuthi asithinte ukuze uthole ulwazi olwengeziwe. Silindele ukuhlinzeka ngezixazululo namasevisi kubasebenzisi abaningi kumakethe yangemuva yomhlaba; sethule isu lethu lomenzeli womhlaba ngokuhlinzeka ngempahla yethu ehamba phambili emhlabeni wonke ngenxa yozakwethu abahlonishwayo abavumela abasebenzisi bomhlaba ukuthi bahambisane nokuqanjwa kabusha kobuchwepheshe kanye nezimpumelelo nathi.
Ngokuphathelene nobuchwepheshe bokulawula ukuncibilika kwensimbi ye-boiler, ngaphezu kokwakhiwa kwamakhemikhali ukuze kufinyelele ilitshe, kudinga futhi insimbi ye-boiler ibe nokuhlanzeka okuphezulu kanye nezinto eziyingozi eziphansi ze-S ne-P, ikakhulukazi i-S element kufanele ilawulwe ngokuqinile, ikakhulukazi ngoba Isici sika-S sibangela ikristalu yasekuqaleni Isici esiyinhloko sokungcola esenza buthaka umngcele yisici esiyinhloko esiholela ekungeneni kwensimbi.
Isicelo
Isetshenziswa kakhulu ukwenza insimbi yesakhiwo sekhabhoni yekhwalithi ephezulu, insimbi yesakhiwo sengxubevange kanye namapayipi ensimbi angenamthungo angangeni ekushiseni ngomfutho ophezulu kanye namapayipi abhayela wesitimu.
Isetshenziselwa kakhulu ukucindezela okuphezulu kanye nesevisi yokushisa ephezulu ye-boiler (ishubhu ye-Superheater, ishubhu yokufudumeza kabusha, ishubhu yomhlahlandlela womoya, ishubhu lesitimu eliyinhloko lama-boilers aphezulu kanye ne-ultra high pressure). Ngaphansi kwesenzo sokushisa okuphezulu kwegesi ye-flue kanye nomhwamuko wamanzi, ithubhu izokhipha i-oxidize futhi igle. Kudingeka ukuthi ipayipi lensimbi libe nokuqina okuphezulu, ukumelana okuphezulu ne-oxidation nokugqwala, nokuzinza okuhle kwesakhiwo.
Ibanga Eliyinhloko
Ibanga eliphezulu carbon steel kwesakhiwo: 20g, 20mng, 25mng
Ibanga lensimbi yesakhiwo se-alloy: 15mog, 20mog, 12crmog, 15crmog, 12cr2mog, 12crmovg, 12cr3movsitib, njll.
Ibanga lensimbi ekwazi ukumelana nokugqwala: 1cr18ni9 1cr18ni11nb
Ingxenye Yekhemikhali
| Ibanga | Ikhwalithi Ikilasi | Impahla Yekhemikhali | ||||||||||||||
| 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 | ||||||||||||||
| Ngaphandle kwamabanga e-Q345A ne-Q345B, insimbi kufanele iqukathe okungenani i-elementi eyodwa yezinhlamvu ezicwengisisiwe i-Al, Nb, V, kanye ne-Ti. Ngokwezidingo, umphakeli angakwazi ukwengeza i-elementi eyodwa noma ngaphezulu okusanhlamvu okucolisisiwe, inani eliphakeme Kufanele lihlangabezane nezimfuneko etafuleni. Uma kuhlangene, i-Nb + V + Ti <0.22% °Kumabanga e-Q345, Q390, Q420 kanye ne-Q46O, i-Mo + Cr <0.30% oUma ibanga ngalinye lika-Cr no-Ni lisetshenziswa njengento esele, okuqukethwe kwe-Cr ne-Ni akufanele. kube ngaphezu kuka-0.30%; lapho idinga ukwengezwa, okuqukethwe kwayo kufanele kuhlangabezane nezidingo ezisethebulani noma kunqunywe umphakeli nomthengi ngokubonisana. angenziwa. Uma i-Al, Nb, V, Ti nezinye izakhi ze-alloy ezine-nitrogen fixation zengezwa ensimbi, okuqukethwe kwe-nitrogen akunqunyelwe. Okuqukethwe kokulungisa i-nitrogen kufanele kucaciswe kusitifiketi sekhwalithi. 'Uma usebenzisa yonke i-aluminium, ingqikithi yokuqukethwe kwe-aluminium AIt ^ 0.020% B | ||||||||||||||||
Impahla Mechanical
| No | Ibanga | Impahla Mechanical | ||||
|
|
| I-tensile | Veza | Nweba | I-Impect (J) | Isandla |
| 1 | 20G | 410- | ≥ | 24/22% | 40/27 | - |
| 2 | 20MnG | 415- | ≥ | 22/20% | 40/27 | - |
| 3 | 25MnG | 485- | ≥ | 20/18% | 40/27 | - |
| 4 | 15 MoG | 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 | ≤ |
Ukubekezelelana
Ubukhulu Bodonga kanye Nobubanzi Bangaphandle:
Uma zingekho izidingo ezikhethekile, ipayipi lizolethwa njengobubanzi obuvamile obungaphandle kanye nobukhulu bodonga oluvamile. Njengeshidi lokulandela
| Ukuqokwa kwezigaba | Indlela yokukhiqiza | Usayizi wepayipi | Ukubekezelelana | |||
| Ibanga elijwayelekile | Izinga eliphezulu | |||||
| WH | Ipayipi eligoqiwe elishisayo (extrude) | Ububanzi bangaphandle obujwayelekile (D) | <57 | 0.40 | ±0,30 | |
| 57 〜325 | SW35 | ±0.75%D | ±0.5%D | |||
| S>35 | ±1%D | ±0.75%D | ||||
| >325〜6. | + 1%D noma + 5.Thatha encane 一2 | |||||
| > 600 | + 1%D noma + 7,Thatha encane 一2 | |||||
| Ukuqina Kodonga Olujwayelekile (S) | <4.0 | ±|・丨） | ±0.35 | |||
| >4.0-20 | + 12.5%S | ±10%S | ||||
| >20 | I-DV219 | ±10%S | ±7.5%S | |||
| ngo219 | + 12.5%S -10%S | 土10%S | ||||
| WH | Ipayipi lokunweba elishisayo | Ububanzi bangaphandle obujwayelekile (D) | konke | ±1%D | ±0.75%. |
| Ukuqina Kodonga Olujwayelekile (S) | konke | + 20%S -10%S | + 15%S -io%s | ||
| I-WC | Kuyabanda (kugoqiwe) Ppipe | Ububanzi bangaphandle obujwayelekile (D) | <25.4 | ±'L1j | - |
| >25.4 〜4() | ±0.20 | ||||
| > 40 〜50 | |:0.25 | - | |||
| > 50 〜60 | ±0.30 | ||||
| > 60 | ±0.5%D | ||||
| Ukuqina Kodonga Olujwayelekile (S) | <3.0 | ±0.3 | ±0.2 | ||
| >3.0 | S | ±7.5%S |
Ubude:
Ubude obujwayelekile bamapayipi ensimbi buyi-4 000 mm ~ 12 000 mm. Ngemva kokubonisana phakathi komphakeli nomthengi, bese ugcwalisa inkontileka, ingalethwa amapayipi ensimbi anobude obungaphezu kuka-12 000 mm noma obufushane kuno-I 000 mm kodwa angabi ngaphansi kuka-3 000 mm; ubude obufushane Isibalo samapayipi ensimbi angaphansi kuka-4,000 mm kodwa angabi ngaphansi kuka-3,000 mm angeke adlule ku-5% yenani eliphelele lamapayipi ensimbi alethiwe.
Isisindo sokulethwa:
Lapho ipayipi lensimbi lilethwa ngokuya ngobubanzi obungajwayelekile obungaphandle kanye nobukhulu bodonga lokuzisholo noma ububanzi obungaphakathi obuvamile kanye nobukhulu bodonga olubizwa ngokuthi, ipayipi lensimbi lilethwa ngokuvumelana nesisindo sangempela. Ingabuye ihanjiswe ngokwesisindo sethiyori.
Lapho ipayipi yensimbi ihanjiswa ngokusho kobubanzi obungaphandle obujwayelekile kanye nobukhulu obuncane bodonga, ipayipi yensimbi ihanjiswa ngokwesisindo sangempela; amaqembu okuhlinzeka kanye nesidingo ayaxoxisana. Futhi kukhonjisiwe kunkontileka. Ipayipi lensimbi lingabuye lihanjiswe ngokuvumelana nesisindo sethiyori.
Ukubekezelela isisindo:
Ngokwezidingo zomthengi, ngemva kokubonisana phakathi komphakeli nomthengi, futhi kwinkontileka, ukuchezuka phakathi kwesisindo sangempela nesisindo sethiyori sepayipi lensimbi yokulethwa kuzohlangabezana nezimfuneko ezilandelayo:
a) Ipayipi lensimbi elilodwa: ± 10%;
b) Iqoqo ngalinye lamapayipi ensimbi anobukhulu obuncane be-10 t: ± 7.5%.
Isidingo Sokuhlola
Ukuhlolwa kwe-Hydraustatic:
Ipayipi lensimbi kufanele lihlolwe nge-hydraulic ngayinye ngayinye. Ingcindezi yokuhlola ephezulu ingu-20 MPa. Ngaphansi kwengcindezi yokuhlola, isikhathi sokuzinza akufanele sibe ngaphansi kuka-10 s, futhi ipayipi yensimbi akufanele ivuze.
Ngemuva kokuthi umsebenzisi evumile, ukuhlolwa kwe-hydraulic kungathathelwa indawo ukuhlolwa kwamanje kwe-eddy noma ukuhlolwa kokuvuza kazibuthe.
Ukuhlolwa Okungonakali:
Amapayipi adinga ukuhlolwa okwengeziwe kufanele ahlolwe nge-ultrasonically ngayinye. Ngemuva kokuthi ingxoxo idinga imvume yeqembu futhi icaciswe kunkontileka, okunye ukuhlola okungabhubhisi kungangezwa.
Ukuhlolwa kokucaba:
Amashubhu anobubanzi obungaphandle obungaphezu kuka-22 mm azohlolwa ukuze abhebhetheke. Awekho ama-delamination abonakalayo, amabala amhlophe, noma ukungcola okufanele kwenzeke phakathi nalo lonke ucwaningo.
Ukuhlolwa kwe-Flaring:
Ngokwezidingo zomthengi futhi ezishiwo kunkontileka, ipayipi lensimbi elinobubanzi obungaphandle ≤76mm nokuqina kodonga ≤8mm kungenziwa ukuhlolwa kokuvutha . Ukuhlolwa kwenziwa ekamelweni lokushisa nge-taper engu-60 °. Ngemuva kokuvutha, izinga lokuvutha lobubanzi obungaphandle kufanele lihlangabezane nezidingo zetafula elilandelayo, futhi impahla yokuhlola akumele ibonise imifantu noma ukuklebhuka.
| Uhlobo Lwensimbi
| Isilinganiso sangaphandle sokuvutha kwepayipi lensimbi/% | ||
| Ububanzi Bangaphakathi/Ububanzi Bangaphandle | |||
| <0.6 | >0.6 〜0.8 | >0.8 | |
| Insimbi yesakhiwo sekhabhoni ephezulu | 10 | 12 | 17 |
| Insimbi ye-alloy yesakhiwo | 8 | 10 | 15 |
| •Ububanzi bangaphakathi bubalwa kusampula. | |||
Imininingwane Yomkhiqizo
Amashubhu Ensimbi Angenamthungo Wamabhola Okucindezela Okuphezulu
I-GB/T5310-2017
ASME SA-106/SA-106M-2015
I-ASTMA210(A210M)-2012
ASME SA-213/SA-213M
