Ukulethwa Okusheshayo kwe-China Heavy Thickness Alloy Ipayipi Lensimbi Elingenamthungo le-High Pressure Boiler
Uhlolojikelele
Ngokuphatha kwethu okuhle kakhulu, amandla obuchwepheshe anamandla kanye nezindlela zokulawula eziqinile zekhwalithi ephezulu, siyaqhubeka nokuhlinzeka abathengi bethu ngamanani athembekile, afanele kanye nezinsizakalo ezivelele. Sihlose ukuba ngokuqinisekile omunye wozakwethu abathembeke kakhulu futhi sizuze ukwaneliseka kwakho nge-Alloy Seamless Steel Pipe ye-High Pressure Boiler, Siyakwamukela amakhasimende omhlaba wonke ukuze asithinte ngebhizinisi nokubambisana kwesikhathi eside. Sizoba uzakwethu onokwethenjelwa kanye nomphakeli wakho. Inkampani yethu ingumnikezeli wamazwe ngamazwe ngalolu hlobo lokuthengiswayo. Sinikeza ukukhetha okumangalisayo kwezixazululo zekhwalithi ephezulu. Umgomo wethu uwukujabulisa wena ngeqoqo lethu elihlukile lezinto ezinengqondo ngenkathi sinikeza inani kanye nesevisi enhle kakhulu. Umgomo wethu ulula: Ukunikeza imikhiqizo nesevisi engcono kakhulu kumakhasimende ethu ngamanani aphansi kakhulu ngangokunokwenzeka.
Ubhayela wezitshalo zamandla kagesi izinto ezisetshenziswa kakhulu ezisetshenziswa kakhulu i-15 crmog15 crmog iyipayipi lensimbi elingenamthungo elingu-15, luhlobo lwensimbi yesakhiwo esinengxubevange ephansi, ilungele ukubala izinga lokushisa odongeni alikho ngaphezu kuka-550 ℃ ingcindezi ephezulu namandla okucindezela okukhulu. Ipayipi le-steam boilers main. Ibanga lensimbi lezinga likazwelonke le-GB5310-2017, ekulethweni okujwayelekile kwezinhlinzeko zesimo sokwelashwa kokushisa kwensimbi eyi-15 crmog ngokuningiliziwe.
Ngenxa yokwengezwa kwezakhi ze-alloy, kanye nokubalwa kwensimbi yensimbi elingana ne-CE 0.43 ~ 0.63, kukhombisa ukushiselwa kwensimbi okungu-15 crmog kubi kakhulu ku-20 g yensimbi. Ibonakala kalula i-weld crack ebandayo, ishisa kabusha i-crack kanye ne- temper brittleness, njll. Ngokuvamile, izimo ezifanayo zamandla angu-15 crmog, ubulukhuni kanye nezinye izakhiwo zemishini zingcono kune-20 g, ngaphezu kwalokho, ukungezwa kwe-Cr element ukuthuthukisa i-oxidation. ukumelana kwezinto, ukungezwa kwe-Mo element ukuthuthukisa amandla okushisa ezinto ezibonakalayo, ngakho-ke, insimbi engu-15 crmog kubhayela wesitsha samandla amapayipi amakhulu omusi asetshenziswa ngaphansi kwesimo sokushisa okuphezulu, ngesisekelo sezidingo zokusebenza kwemishini, ngasikhathi sinye. abe namandla okwanele okumelana ne-oxidation kanye nokumelana nokushisa. Njengohlobo lwensimbi ekwazi ukumelana nokushisa, usayizi we-pearl 15 crmog isigaba se-microstructure se-ferrite ne-pearlite, isikhathi eside ngaphansi kwezimo zokushisa eziphakeme ezisetshenziswayo kuzokhiqiza i-pearlite spheroidization. Ngokusho kwe-DL/T787-2001 izitshalo zamandla kagesi amalahle ezinamazinga okulinganisa ayi-15 crmo pearlitic steel spheroidizing, ngokusho kwezinhlamvu zenhlangano ye-pearlite spheroidization level spheroidizing level ingahlukaniswa ngamaleveli 1 kuye ku-5, ngokukhuphuka kwezinga le-spheroidizing, 15 Izakhiwo ze-crmog mechanical kanye nezakhiwo ezishisayo zensimbi ziyancipha.
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
