Cov kav hlau tsis muaj seamless rau cov boilers siab hauv GB / T5310-2017 Txheem
| Tus Qauv:GB/T5310-2017 | Cov Hlau Los Yog Tsis Yog: Cov Hlau |
| Pawg Qib: 20G, 20MnG, 25MnG, thiab lwm yam | Daim Ntawv Thov: Boiler Yeeb Nkab |
| Thickness: 1 - 100 hli | Kev Kho Mob Nto: Raws li tus neeg yuav tsum tau ua |
| Sab Nraud Txoj Kab uas hla (Puag ncig): 10 - 1200 hli | Txheej Txheem: Kub Dov |
| Ntev: Ntev ntev lossis ntev random (6-12m) | Kev kho cua sov: Annealing / normalizing |
| Tshooj Puab: Puag ncig | Cov Yeeb Nkab Tshwj Xeeb: Cov Yeeb Nkab Boiler |
| Qhov chaw ntawm keeb kwm: Tuam Tshoj | Kev Siv: Boiler thiab Heat Exchanger |
| Daim Ntawv Pov Thawj: ISO9001: 2008 | Kev Ntsuas: ECT / UT / Hydrau Static |
Nws yog feem ntau yog siv los ua cov hlau zoo carbon, hlau alloy thiab stainless hlau kub-resistant steel seamless steel kav rau siab siab thiab siab dua cov kav dej boiler.
Feem ntau siv rau kev pabcuam siab thiab kub ntawm lub boiler (Tub raj Superheater, tub raj rov ua kom sov, tub raj qhia cua, tub raj pa loj rau cov boiler siab thiab siab heev). Nyob rau hauv qhov kev ua ntawm cov pa roj kub thiab cov pa dej, lub raj yuav oxidize thiab xeb. Nws yog qhov yuav tsum tau ua kom cov yeeb nkab hlau muaj lub zog ruaj khov, tiv taus oxidation thiab corrosion, thiab ruaj khov zoo.
Qib ntawm cov hlau zoo carbon: 20g, 20mng, 25mng
Qib ntawm cov hlau sib xyaw ua ke: 15mog, 20mog, 12crmog, 15crmog, 12cr2mog, 12crmovg, 12cr3movsitib, thiab lwm yam
Qib ntawm cov hlau tiv taus cua sov: 1cr18ni9 1cr18ni11nb
| Qib | Zoo Chav Kawm | Cov Khoom Siv Tshuaj | ||||||||||||||
| C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | Nd | Mo | B | Als" | ||
| Tsis ntau tshaj | feeb | |||||||||||||||
| 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 | ||||||||||||||
| Tsuas yog Q345A thiab Q345B qib, cov hlau yuav tsum muaj tsawg kawg yog ib qho ntawm cov khoom siv ua kom zoo Al, Nb, V, thiab Ti. Raws li qhov xav tau, tus neeg muag khoom tuaj yeem ntxiv ib lossis ntau cov khoom siv ua kom zoo, tus nqi siab tshaj plaws Yuav tsum ua tau raws li qhov yuav tsum tau ua hauv lub rooj. Thaum ua ke, Nb + V + Ti <0.22% ° Rau Q345, Q390, Q420 thiab Q46O qib, Mo + Cr <0.30% o Thaum txhua qib ntawm Cr thiab Ni siv ua cov khoom seem, cov ntsiab lus ntawm Cr thiab Ni yuav tsum tsis pub ntau tshaj 0.30%; thaum nws xav tau ntxiv, nws cov ntsiab lus yuav tsum ua tau raws li qhov yuav tsum tau ua hauv lub rooj lossis txiav txim siab los ntawm tus neeg muag khoom thiab tus neeg yuav khoom los ntawm kev sab laj. J Yog tias tus neeg muag khoom tuaj yeem lav tias cov ntsiab lus nitrogen ua tau raws li qhov yuav tsum tau ua hauv lub rooj, kev tshuaj xyuas cov ntsiab lus nitrogen yuav tsis ua tiav. Yog tias Al, Nb, V, Ti thiab lwm yam khoom siv alloy nrog nitrogen fixation ntxiv rau cov hlau, cov ntsiab lus nitrogen tsis txwv. Cov ntsiab lus nitrogen fixation yuav tsum tau teev tseg hauv daim ntawv pov thawj zoo. Thaum siv txhuas tag nrho, tag nrho cov txhuas ntsiab lus AIt ^ 0.020% B | ||||||||||||||||
| No | Qib | Khoom Siv Kho Tshuab | ||||
|
|
| Tensile | Cov qoob loo | Ntev mus | Kev cuam tshuam (J) | Kev siv tes |
| 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 | ≤ |
Phab Ntsa Thickness thiab Outter Txoj Kab uas hla:
Yog tias tsis muaj cov kev cai tshwj xeeb, cov yeeb nkab yuav raug xa tuaj raws li txoj kab uas hla sab nraud thiab txoj kab uas hla phab ntsa. Raws li ua raws li daim ntawv
| Kev faib tawm | Txoj kev tsim khoom | Qhov loj ntawm cov yeeb nkab | Kev kam rau siab | |||
| Qib ib txwm | Qib siab | |||||
| WH | Cov yeeb nkab kub dov (extrude) | Txoj kab uas hla sab nraud (D) | <57 | ua 0.40 | ±0,30 | |
| 57 〜325 | SW35 | ±0.75%D | ±0.5%D | |||
| S>35 | ±1%D | ±0.75%D | ||||
| >325 〜6。。 | + 1%D los yog + 5. Siv ib qho tsawg dua ib qho 2 | |||||
| >600 | + 1%D los yog + 7, Siv ib qho tsawg dua ib qho 2 | |||||
| Phab Ntsa Thickness (S) | <4.0 | ±|・丨) | ±0.35 | |||
| >4.0-20 | + 12.5%S | ±10%S | ||||
| >20 | DV219 | ±10%S | ±7.5%S | |||
| ib 219 | + 12.5%S -10%S | 土10%S | ||||
| WH | Cov yeeb nkab thermal expansion | Txoj kab uas hla sab nraud (D) | tag nrho | ±1%D | ±0.75%. |
| Phab Ntsa Thickness (S) | tag nrho | + 20%S -10%S | + 15%S -io%s | ||
| Chav Dej | Txias kos (dov) Cov yeeb nkab | Txoj kab uas hla sab nraud (D) | <25.4 | ±'L1j | — |
| >25.4 〜4() | ±0.20 | ||||
| >40 〜50 | |:0.25 | — | |||
| >50 〜60 | ±0.30 | ||||
| >60 | ±0.5%D | ||||
| Phab Ntsa Thickness (S) | <3.0 | ±0.3 | ±0.2 | ||
| >3.0 | S | ±7.5%S |
Ntev:
Qhov ntev ib txwm ntawm cov kav hlau yog 4 000 hli ~ 12 000 hli. Tom qab kev sab laj ntawm tus neeg muag khoom thiab tus neeg yuav khoom, thiab sau daim ntawv cog lus, nws tuaj yeem xa cov kav hlau nrog qhov ntev ntau dua 12 000 hli lossis luv dua I 000 hli tab sis tsis luv dua 3 000 hli; qhov ntev luv Tus naj npawb ntawm cov kav hlau tsawg dua 4,000 hli tab sis tsis tsawg dua 3,000 hli yuav tsum tsis pub tshaj 5% ntawm tag nrho cov kav hlau xa tuaj.
Qhov hnyav xa khoom:
Thaum cov yeeb nkab hlau raug xa tuaj raws li qhov loj ntawm sab nraud thiab qhov tuab ntawm phab ntsa lossis qhov loj ntawm sab hauv thiab qhov tuab ntawm phab ntsa, cov yeeb nkab hlau raug xa tuaj raws li qhov hnyav tiag tiag. Nws kuj tseem tuaj yeem xa tuaj raws li qhov hnyav theoretical.
Thaum cov yeeb nkab hlau raug xa tuaj raws li qhov loj me ntawm sab nraud thiab qhov tuab ntawm phab ntsa tsawg kawg nkaus, cov yeeb nkab hlau raug xa tuaj raws li qhov hnyav tiag tiag; cov neeg muab khoom thiab cov neeg thov khoom sib tham. Thiab nws tau qhia hauv daim ntawv cog lus. Cov yeeb nkab hlau kuj tseem tuaj yeem xa tuaj raws li qhov hnyav theoretical.
Qhov hnyav kam rau siab:
Raws li qhov yuav tsum tau ua ntawm tus neeg yuav khoom, tom qab kev sab laj ntawm tus neeg muag khoom thiab tus neeg yuav khoom, thiab hauv daim ntawv cog lus, qhov sib txawv ntawm qhov hnyav tiag tiag thiab qhov hnyav theoretical ntawm cov yeeb nkab xa khoom yuav tsum ua tau raws li cov hauv qab no:
a) Cov yeeb nkab hlau ib leeg: ± 10%;
b) Txhua pawg ntawm cov kav hlau uas muaj qhov tsawg kawg nkaus ntawm 10 t: ± 7.5%.
Kev Ntsuas Hydraustic:
Cov yeeb nkab hlau yuav tsum tau kuaj hydraulically ib qho los ntawm ib qho. Lub siab tshaj plaws ntawm kev sim siab yog 20 MPa. Nyob rau hauv lub siab sim siab, lub sijhawm ruaj khov yuav tsum tsis pub tsawg dua 10 vib nas this, thiab cov yeeb nkab hlau yuav tsum tsis txhob xau.
Tom qab tus neeg siv pom zoo, qhov kev sim hydraulic tuaj yeem hloov los ntawm kev sim eddy tam sim no lossis kev sim magnetic flux leakage.
Kev Ntsuas Tsis Ua Phem:
Cov kav dej uas xav tau kev tshuaj xyuas ntau dua yuav tsum tau kuaj xyuas ultrasonic ib qho los ntawm ib qho. Tom qab kev sib tham xav tau kev pom zoo ntawm tog neeg thiab tau teev tseg hauv daim ntawv cog lus, lwm yam kev sim tsis puas tsuaj tuaj yeem ntxiv.
Kev Ntsuas Flattening:
Cov raj uas muaj txoj kab uas hla sab nraud loj dua 22 hli yuav tsum raug kuaj kom tiaj. Yuav tsum tsis txhob muaj qhov tawg, cov pob dawb, lossis cov khoom tsis huv tshwm sim thaum lub sijhawm sim tag nrho.
Kev Ntsuas Kub:
Raws li qhov yuav tsum tau ua ntawm tus neeg yuav khoom thiab tau hais hauv daim ntawv cog lus, cov yeeb nkab hlau nrog lub cheeb sab nraud ≤76mm thiab phab ntsa tuab ≤8mm tuaj yeem ua qhov kev sim flaring. Qhov kev sim tau ua tiav ntawm chav tsev kub nrog lub taper ntawm 60 °. Tom qab flaring, qhov nrawm flaring ntawm lub cheeb sab nraud yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm cov lus hauv qab no, thiab cov khoom siv sim yuav tsum tsis txhob pom cov kab nrib pleb lossis rips.
| Hom hlau
| Qhov nrawm ntawm lub cheeb ntawm cov yeeb nkab steel /% | ||
| Txoj Kab Uas Sab Hauv/Txoj Kab Uas Sab Nraud | |||
| <0.6 | >0.6 〜0.8 | >0.8 | |
| Cov hlau ua los ntawm cov pa roj carbon zoo | 10 | 12 | 17 |
| Cov hlau sib xyaw ua ke | 8 | 10 | 15 |
| • Lub cheeb sab hauv yog xam rau cov qauv. | |||
