Kev xa khoom sai rau Tuam Tshoj Hnyav Thickness Alloy Seamless Steel Yeeb Nkab rau Kev Kub Siab Boiler
Txheej txheem cej luam
Nrog rau peb cov kev tswj hwm zoo, muaj peev xwm ua tau zoo thiab cov txheej txheem tswj kev tswj xyuas zoo, peb txuas ntxiv muab peb cov neeg siv khoom muaj txiaj ntsig zoo, tus nqi tsim nyog thiab cov kev pabcuam zoo. Peb lub hom phiaj ntawm kev ua ib qho ntawm koj cov neeg koom tes uas ntseeg siab tshaj plaws thiab tau txais koj txaus siab rau Alloy Seamless Steel Yeeb Nkab rau Kev Kub Siab Boiler, Zoo siab txais tos cov neeg siv khoom thoob ntiaj teb tiv tauj peb rau kev lag luam thiab kev koom tes ntev. Peb yuav yog koj tus khub txhim khu kev qha thiab tus neeg muag khoom. Peb lub tuam txhab yog cov khoom lag luam thoob ntiaj teb ntawm cov khoom lag luam zoo li no. Peb muab kev xaiv zoo kawg nkaus ntawm cov kev daws teeb meem zoo. Peb lub hom phiaj yog ua kom zoo siab rau koj nrog peb cov khoom sib txawv ntawm cov khoom zoo siab thaum muab tus nqi thiab kev pabcuam zoo heev. Peb lub hom phiaj yog yooj yim: Muab cov khoom zoo tshaj plaws thiab kev pabcuam rau peb cov neeg siv khoom ntawm tus nqi qis tshaj plaws.
Fais fab nroj tsuag boiler lub ntsiab chav piping cov ntaub ntawv uas nquag siv 15 crmog15 crmog yog 15 crmo steel seamless steel yeeb nkab, yog ib yam uas tsis muaj alloy structural steel, feem ntau yog haum rau xam cov phab ntsa kub tsis ntau tshaj 550 ℃ siab siab thiab siab siab zog. chaw nres tsheb boiler lub ntsiab chav yeeb nkab. Cov qib steel ntawm lub teb chaws tus qauv GB5310-2017, nyob rau hauv tus txheej txheem xa ntawm 15 crmog steel tshav kub kho lub xeev cov kev cai nyob rau hauv kom meej.
Vim tias qhov sib ntxiv ntawm cov hlau alloy, thiab kev suav ntawm cov hlau carbon sib npaug CE 0.43 ~ 0.63, qhia 15 crmog steel weldability tseem ceeb heev hauv 20 g steel. Pom tau yooj yim dua weld txias tawg, reheating tawg thiab temper brittleness, thiab lwm yam. Feem ntau, tib yam kev mob ntawm 15 crmog lub zog, hardness thiab lwm yam txhua yam khoom yog zoo dua li ntawm 20 g, ntxiv rau, ntxiv Cr keeb los txhim kho oxidation. tsis kam ntawm cov khoom, qhov sib ntxiv ntawm Mo lub hauv paus los txhim kho cov cua sov siv ntawm cov khoom, yog li ntawd, 15 crmog steel nyob rau hauv fais fab nroj tsuag boiler lub ntsiab chav piping siv nyob rau hauv lub kub kub, lub hauv paus ntawm mechanics kev ua tau zoo yuav tsum tau, nyob rau tib lub sij hawm muaj txaus oxidation tsis kam thiab thermal kuj. Raws li ib yam ntawm cov cua sov resistant steel, pearl loj 15 crmog theem microstructure ntawm ferrite thiab pearlite, ntev nyob rau hauv kub kub tej yam kev mob siv yuav tsim pearlite spheroidization. Raws li DL / T787-2001 thee-fired fais fab nroj tsuag nrog 15 crmo pearlitic steel spheroidizing cov qauv ntsuas, raws li cov cim ntawm pearlite spheroidization lub koom haum spheroidizing qib tuaj yeem muab faib ua qib 1 txog 5, nrog kev nce qib ntawm spheroidizing, 15 crmog mechanical zog thiab thermal zog ntawm steel txo.
Daim ntawv thov
Nws yog tsuas yog siv los ua cov pa roj carbon zoo steel, alloy steel qauv thiab stainless hlau kub-resistant steel seamless steel kav rau kev kub siab thiab siab dua chav boiler kav.
Feem ntau yog siv rau kev kub siab thiab kub kev pab cuam ntawm boiler (Superheater raj, reheater raj, cua qhia raj, lub ntsiab chav tub raj rau siab thiab ultra siab siab boilers). Nyob rau hauv qhov kev txiav txim ntawm kub flue roj thiab dej vapor, lub raj yuav oxidize thiab corrode. Nws yuav tsum tau hais tias cov yeeb nkab steel muaj cov kav ntev, siab tiv thaiv oxidation thiab corrosion, thiab cov qauv zoo.
Qib tseem ceeb
Qib ntawm cov khoom zoo carbon steel: 20g, 20mng, 25mng
Qib ntawm alloy structural steel: 15mog, 20mog, 12crmog, 15crmog, 12cr2mog, 12crmovg, 12cr3movsitib, thiab lwm yam
Qib ntawm xeb-resistant kub-resistant steel: 1cr18ni9 1cr18ni11nb
Chemical Component
| Qib | Zoo Chav kawm | Chemical Property | ||||||||||||||
| C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | Nd | Mo | B | Als" | ||
| 不大于 | 不小于 | |||||||||||||||
| q345 ua | A | 0.20 ib | 0.50 ib | 1.70 ib | 0.035 ib | 0.035 ib | 0.30 Nws | 0.50 ib | 0.20 ib | 0.012 ib | 0.10 | — | — | |||
| B | 0.035 ib | 0.035 ib | ||||||||||||||
| C | 0.030 Nws | 0.030 Nws | 0.07 ib | 0.15 | 0.20 ib | 0.015 ib | ||||||||||
| D | 0.18 | 0.030 Nws | 0.025 ib | |||||||||||||
| E | 0.025 ib | 0.020 ib | ||||||||||||||
| q390 ua | A | 0.20 ib | 0.50 ib | 1.70 ib | 0.035 ib | 0.035 ib | 0.07 ib | 0.20 ib | 0.20 ib | 0.3 ua. | 0.50 ib | 0.20 ib | 0.015 ib | 0.10 | — | — |
| B | 0.035 ib | 0.035 ib | ||||||||||||||
| C | 0.030 Nws | 0.030 Nws | 0,015 ib | |||||||||||||
| D | 0.030 Nws | 0.025 ib | ||||||||||||||
| E | 0.025 ib | 0.020 ib | ||||||||||||||
| qw 42o | A | 0.20 ib | 0.50 ib | 1.70 ib | 0.035 ib | 0.035 ib | 0.07 ib | 0.2 ua. | 0.20 ib | 0.30 Nws | 0.80 ib | 0.20 ib | 0.015 ib | 0.20 ib | — | — |
| B | 0.035 ib | 0.035 ib | ||||||||||||||
| C | 0.030 Nws | 0.030 Nws | 0.015 ib | |||||||||||||
| D | 0.030 Nws | 0.025 ib | ||||||||||||||
| E | 0.025 ib | 0.020 ib | ||||||||||||||
| qw 46o | C | 0.20 ib | 0.60 ib | 1.80 ib | 0.030 Nws | 0.030 Nws | 0.11 | 0.20 ib | 0.20 ib | 0.30 Nws | 0.80 ib | 0.20 ib | 0.015 ib | 0.20 ib | 0.005 ib | 0.015 ib |
| D | 0.030 Nws | 0.025 ib | ||||||||||||||
| E | 0.025 ib | 0.020 ib | ||||||||||||||
| q500 ua | C | 0.18 | 0.60 ib | 1.80 ib | 0.025 ib | 0.020 ib | 0.11 | 0.20 ib | 0.20 ib | 0.60 ib | 0.80 ib | 0.20 ib | 0.015 ib | 0.20 ib | 0.005 ib | 0.015 ib |
| D | 0.025 ib | 0.015 ib | ||||||||||||||
| E | 0.020 ib | 0.010 ib | ||||||||||||||
| q550 ua | C | 0.18 | 0.60 ib | 2.00 Nws | 0.025 ib | 0,020 ua | 0.11 | 0.20 ib | 0.20 ib | 0.80 ib | 0.80 ib | 0.20 ib | 0.015 ib | 0.30 Nws | 0.005 ib | 0.015 ib |
| D | 0.025 ib | 0,015 ib | ||||||||||||||
| E | 0.020 ib | 0.010 ib | ||||||||||||||
| qw 62o | C | 0.18 | 0.60 ib | 2.00 Nws | 0.025 ib | 0.020 ib | 0.11 | 0.20 ib | 0.20 ib | 1.00 Nws | 0.80 ib | 0.20 ib | 0.015 ib | 0.30 Nws | 0.005 ib | 0.015 ib |
| D | 0.025 ib | 0.015 ib | ||||||||||||||
| E | 0.020 ib | 0.010 ib | ||||||||||||||
| Tsuas yog Q345A thiab Q345B qib, cov hlau yuav tsum muaj tsawg kawg yog ib qho ntawm cov khoom ua kom zoo zoo Al, Nb, V, thiab Ti. Raws li qhov xav tau, tus neeg muag khoom tuaj yeem ntxiv ib lossis ntau dua cov khoom ua kom zoo zoo, qhov siab tshaj plaws yuav tsum ua kom 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% oThaum txhua qib ntawm Cr thiab Ni siv los ua cov khoom seem, cov ntsiab lus ntawm Cr thiab Ni yuav tsum tsis txhob ntau tshaj 0.30%; Thaum nws yuav tsum tau ntxiv, nws cov ntsiab lus yuav tsum ua kom 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 sib tham.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, cov ntsiab lus nitrogen tsom xam yuav tsis tau ua. Yog tias Al, Nb, V, Ti thiab lwm yam hlau alloy nrog nitrogen fixation ntxiv rau cov hlau, cov ntsiab lus nitrogen tsis txwv. Cov ntsiab lus ntawm nitrogen fixation yuav tsum tau teev nyob rau hauv daim ntawv pov thawj zoo. 'Thaum siv tag nrho cov txhuas, tag nrho cov ntsiab lus txhuas AIt ^ 0.020% B | ||||||||||||||||
Mechanical Property
| No | Qib | Mechanical Property | ||||
|
|
| Tensile | Yield | Txuas ntxiv | Impect (J) | Tes tes |
| 1 | 20 G | 410- | ≥ | 24/22% | 40/27 ib | — |
| 2 | 20 MnG | 415- | ≥ | 22/20% | 40/27 ib | — |
| 3 | 25 MnG | 485- | ≥ | 20/18% | 40/27 ib | — |
| 4 | 15 MOG | 450- | ≥ | 22/20% | 40/27 ib | — |
| 6 | 12 CrMoG | 410- | ≥ | 21/19% | 40/27 ib | — |
| 7 | 15 CrMoG | 440- | ≥ | 21/19% | 40/27 ib | — |
| 8 | 12Cr2MoG | 450- | ≥ | 22/20% | 40/27 ib | — |
| 9 | 12Cr1MoVG | 470- | ≥ | 21/19% | 40/27 ib | — |
| 10 | 12Cr2MoWVTiB | 540- | ≥ | 18/-% | 40/- | — |
| 11 | 10Cr9Mo1VNbN | ≥ | ≥ | 20/16% | 40/27 ib | ≤ |
| 12 | 10Cr9MoW2VNbBN | ≥ | ≥ | 20/16% | 40/27 ib | ≤ |
Ua siab ntev
Phab ntsa Thickness thiab Outter Diameter:
Yog tias tsis muaj qhov tshwj xeeb xav tau, cov yeeb nkab yuav raug xa tawm raws li cov kab nruab nrab sab nraud thiab cov phab ntsa tuab. Raws li daim ntawv
| Classification npe | Txoj kev tsim khoom | Qhov loj ntawm cov kav dej | Ua siab ntev | |||
| Qib ib txwm | Qib siab | |||||
| WH | Kub Rolled (extrude) yeeb nkab | Norminal sab nraud Diameter (D) | <57 | ua 0.40 | ± 0,30 | |
| 57-325 Ib | SWB 35 | ± 0.75% D | ± 0.5% D | |||
| S > 35 | ± 1% D | ± 0.75% D | ||||
| > 325-6.. | + 1%D lossis + 5.Ua ib qho tsawg dua ib 2 | |||||
| > 600 | + 1% D lossis + 7, Noj tsawg dua ib 2 | |||||
| Norminal Phab Ntsa Thickness (S) | <4.0 | ±|・丨) | ± 0.35 | |||
| > 4.0-20 | + 12.5% S | ± 10% S | ||||
| > 20 | SIB DV219 | ± 10% S | ± 7.5% S | |||
| ib 219 | + 12.5%S -10%S | 土10% S | ||||
| WH | Thermal expansion yeeb nkab | Norminal sab nraud Diameter (D) | tag nrho | ± 1% D | ± 0.75%. |
| Norminal Phab Ntsa Thickness (S) | tag nrho | + 20% S -10% S | + 15% S -io%s | ||
| WC | Cold drawn (kub) Ppipe | Norminal sab nraud Diameter (D) | <25.4 | ±'L1j | — |
| > 25.4 ~ 4() | ± 0.20 | ||||
| > 40-50 | |:0.25 | — | |||
| > 50-60 | ± 0.30 | ||||
| > 60 | ± 0.5% D | ||||
| Norminal Phab Ntsa Thickness (S) | <3.0 | ± 0.3 | ± 0.2 | ||
| > 3.0 | S | ± 7.5% S |
Ntev:
Qhov ntev ntev ntawm cov kav hlau yog 4 000 mm ~ 12 000 mm. Tom qab kev sib tham ntawm tus neeg muag khoom thiab tus neeg yuav khoom, thiab sau rau hauv daim ntawv cog lus, nws tuaj yeem xa cov kav hlau steel nrog qhov ntev ntau dua 12 000 mm lossis luv dua kuv 000 mm tab sis tsis luv dua 3 000 mm; luv luv Cov kav hlau steel tsawg dua 4,000 hli tab sis tsis pub tsawg dua 3,000 hli yuav tsum tsis pub tshaj 5% ntawm tag nrho cov kav hlau xa tawm.
Delivery luj:
Thaum cov yeeb nkab steel xa tawm raws li qhov nominal txheej kab thiab nominal phab ntsa thickness los yog lub nominal puab txoj kab uas hla thiab nominal phab ntsa thickness, cov yeeb nkab steel yog xa raws li qhov tseeb qhov hnyav. Nws kuj tuaj yeem raug xa tawm raws li qhov hnyav theoretical.
Thaum cov yeeb nkab steel xa tawm raws li qhov nominal txheej kab thiab qhov tsawg kawg nkaus phab ntsa thickness, cov yeeb nkab steel yog xa raws li qhov tseeb qhov hnyav; cov khoom thiab cov neeg thov kev sib tham. Thiab nws yog qhia nyob rau hauv daim ntawv cog lus. Cov yeeb nkab steel kuj tuaj yeem xa tau raws li qhov ntsuas qhov hnyav.
Qhov hnyav kam rau ua:
Raws li cov kev xav tau ntawm tus neeg yuav khoom, tom qab kev sib tham 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 ntsuas theoretical ntawm tus xa khoom steel yeeb nkab yuav tsum ua raws li cov hauv qab no:
a) Ib leeg steel yeeb nkab: ± 10%;
b) Txhua batch ntawm steel kav nrog qhov tsawg kawg nkaus ntawm 10 t: ± 7.5%.
Kev Xeem Xeem
Hydraustatic Test:
Cov yeeb nkab steel yuav tsum tau sim hydraulically ib los ntawm ib qho. Qhov ntsuas siab tshaj plaws yog 20 MPa. Nyob rau hauv qhov kev sim siab, lub sij hawm stabilization yuav tsum tsis pub tsawg tshaj 10 s, thiab cov yeeb nkab steel yuav tsum tsis txhob xau.
Tom qab tus neeg siv pom zoo, qhov kev ntsuam xyuas hydraulic tuaj yeem hloov tau los ntawm kev ntsuas tam sim no los yog kev ntsuam xyuas qhov sib nqus flux.
Nondestructive Test:
Cov kav dej uas xav tau kev tshuaj xyuas ntau dua yuav tsum tau kuaj xyuas ultrasonically ib los ntawm ib qho. Tom qab kev sib tham xav tau kev tso cai los ntawm tog thiab tau teev tseg hauv daim ntawv cog lus, lwm yam kev sim uas tsis muaj kev puas tsuaj tuaj yeem raug ntxiv.
Flattening Test:
Cov raj uas muaj ib txoj kab uas hla sab nraud ntau dua 22 hli yuav tsum raug kuaj kom haum. Tsis pom delamination, dawb me ntsis, los yog impurities yuav tsum tshwm sim thaum lub sij hawm tag nrho kev sim.
Flaring Test:
Raws li qhov yuav tsum tau muaj ntawm tus neeg yuav khoom thiab tau teev nyob rau hauv daim ntawv cog lus, cov yeeb nkab steel nrog lub taub sab nraud ≤76mm thiab phab ntsa thickness ≤8mm tuaj yeem ua tiav kev sim ntsuas. Qhov kev sim tau ua nyob rau hauv chav tsev kub nrog ib tug taper ntawm 60 °. Tom qab qhov flaring, qhov flaring tus nqi ntawm lub sab nraud yuav tsum tau raws li qhov yuav tsum tau ntawm cov lus hauv qab no, thiab cov khoom siv kuaj yuav tsum tsis txhob pom cov kab nrib pleb lossis rips.
| Hom hlau
| Sab nraud txoj kab uas hla flaring tus nqi ntawm cov yeeb nkab steel /% | ||
| Inner Diameter/Outter Diameter | |||
| <0.6 | > 0.6-0.8 | > 0.8 | |
| High-zoo carbon structural steel | 10 | 12 | 17 |
| Cov qauv hlau alloy | 8 | 10 | 15 |
| •Lub puab txoj kab uas hla yog xam rau tus qauv. | |||
Product Detail
Seamless Steel Tubes Rau High-Pressure Boilers
GB/T5310-2017
ASME SA-106/SA-106M-2015
ASTMA210 (A210M)-2012
ASME SA-213/SA-213M
