Txoj kev tsim khoom
1. Qhov dav dav boiler raj kub yog qis dua 450 ℃, cov yeeb nkab hauv tsev yog tsim los ntawm No. 10, tsis yog.20 carbon bonded steel kub dov yeeb nkab los yog txias drawn yeeb nkab.
2. High-pressure boiler raj feem ntau yog siv nyob rau hauv qhov kub thiab txias siab.Nyob rau hauv qhov kev txiav txim ntawm kub flue roj thiab dej vapor, oxidation thiab corrosion yuav tshwm sim.Cov yeeb nkab steel yuav tsum muaj lub zog ruaj khov, siab oxidation corrosion kuj thiab zoo microstructure stability.
3. Kev kub siab boiler raj yog ib hom boiler raj, belongs rau seamless steel raj qeb.Txoj kev tsim khoom yog tib yam li seamless raj siab siab boiler raj, tab sis muaj cov kev cai nruj ntawm qib steel siv los tsim steel raj.High-pressure boiler raj feem ntau yog siv nyob rau hauv qhov kub thiab txias txias.Kev kub siab boiler raj yog tsuas yog siv los tsim superheater raj, reheater raj, conduit yeeb nkab, lub ntsiab chav yeeb nkab thiab lwm yam ntawm kev kub siab thiab ultra siab boiler.
4. Vim tias boiler tube ua haujlwm nyob rau hauv qhov kub thiab txias siab rau lub sijhawm ntev, cov khoom siv yuav nkag mus, plasticity thiab toughness poob, thawj koom haum hloov, corrosion thiab lwm yam.Cov raj steel siv los ua boilers yuav tsum muaj:
(1) Lub zog ruaj khov txaus;
(2) Muaj peev xwm deformation yas txaus;
(3) Tsawg kawg kev laus nyiam thiab thermal brittleness;
(4) High oxidation tsis kam, thee tshauv tsis kam, kub tsis kam mus rau natural gas corrosion, chav thiab kev nyuaj siab corrosion kev ua tau zoo;
(5) Lub koom haum zoo ruaj khov thiab kev ua haujlwm zoo.
Cov hlau ntawm kev kub siab boiler raj yog carbon steel thiab pearlite, ferritic thiab austenitic stainless hlau thaum tshav kub kub resistant hlau.Txhawm rau txhim kho cov thermal efficiency ntawm thermal zog generating units thiab txo cov roj noj, kev loj hlob muaj peev xwm, siab parameter (high temperature, high pressure) thermal power generating units (ntau tshaj 1000MW) yog muab qhov tseem ceeb nyob rau hauv lub ntiaj teb no.Chav siab nce mus rau 31.5 ~ 34.3MPa, superheated chav kub txog 595 ~ 650 ℃, mus rau kev loj hlob ntawm ultra-siab siab tseem ceeb siab, yog li kev kub siab boiler raj tso rau pem hauv ntej cov kev xav tau ntau dua.Cov qib steel tshiab tau tsim los ua kom tau raws li qhov xav tau ntawm qhov siab parameter fais fab nroj tsuag boiler.
Kev kub siab boiler tube ntau lawm txoj kev, Siv kev faib tawm
Rau qis thiab nruab nrab siab boiler (ua hauj lwm siab yog feem ntau tsis ntau tshaj 5.88mpa, ua hauj lwm kub hauv qab no 450 ℃) cua sov nto yeeb nkab;Siv rau kev kub siab boiler (kev ua hauj lwm siab feem ntau siab tshaj 9.8mpa, ua hauj lwm kub ntawm 450 ℃ ~ 650 ℃) cua sov nto yeeb nkab, economizer, superheater, reheater, petrochemical kev lag luam yeeb nkab, thiab lwm yam.
Raws li qhov muaj pes tsawg leeg ntawm cov khoom faib tuaj yeem muab faib ua 20G high-pressure boiler raj, 12Cr1MoVG high-pressure boiler raj, steel kev tshawb fawb 102 high-pressure boiler raj, 15CrMoG high-pressure boiler raj, 5310 high-pressure boiler raj, 3087 Tsawg thiab nruab nrab siab boiler raj, 40Cr high-pressure boiler raj, 1Cr5Mo siab boiler raj, 42CrMo siab boiler raj.
Kev kub siab boiler raj ntau lawm txoj kev, Specifications thiab tsos zoo
(1) GB3087-2008 "Seamless Steel yeeb nkab rau Tsawg thiab nruab nrab siab boiler" cov kev cai.Specifications ntawm steel raj rau ntau yam qauv boilers, diameters 10 ~ 426mm, 43 yam nyob rau hauv tag nrho.Muaj 29 hom phab ntsa thickness ntawm 1.5 hli mus rau 26 hli.Txawm li cas los xij, sab nraud thiab phab ntsa thickness ntawm superheated chav yeeb nkab, cov pa luam yeeb loj, cov pa luam yeeb me me thiab cov kab cib cib siv nyob rau hauv locomotive boiler yog txwv tsis pub.
(2) GB5310-2008 "Seamless Steel Tube rau Kev Kub Siab Boiler" kub dov yeeb nkab txoj kab uas hla 22 ~ 530mm, phab ntsa thickness 20 ~ 70mm.Cold drawn (txias dov) raj txoj kab uas hla 10 ~ 108mm, phab ntsa thickness 2.0 ~ 13.0mm.
(3) GB3087-82 "Seamless steel raj rau qis thiab nruab nrab siab boiler" thiab GB5310-95 "seamless steel raj rau siab boiler" cov kev cai.Cov tsos mob zoo: tawg, folding, dov, caws pliav, sib cais thiab wrinkles tsis pub rau sab hauv thiab sab nrauv ntawm cov yeeb nkab steel.Cov teeb meem no yuav tsum tau muab tshem tawm tag nrho.Qhov tob clearance yuav tsum tsis txhob ntau tshaj qhov tsis zoo sib txawv ntawm nominal phab ntsa thickness, thiab qhov tseeb phab ntsa thickness ntawm clearance yuav tsum tsis txhob tsawg tshaj li qhov tsawg kawg nkaus tso cai phab ntsa thickness.
Post lub sij hawm: May-23-2022