S355j0h seamless steel yeeb nkab zoo kev ruaj ntseg
en10216-1 specification: φ 10.2 ~ φ 356 * 1.6mm ~ 20.0mm
European txheem: en10216-2 specification: φ10.2 ~ φ168.2 * 1.6mm ~ 20.0mm
Kev kub siab steel yeeb nkab muaj cov cuab yeej zoo txhua yam ntawm chav tsev kub thiab kub thiab kev tswj xyuas nruj. Nws yog haum rau ntau lub sijhawm ua haujlwm nyob rau hauv siab. Kev kub siab steel kav yog tsuas yog siv nyob rau hauv lub teb ntawm boilers, siab siab roj kav dej ntawm diesel xyaw, tshuaj chiv khoom thiab kav.
Cov kev xav tau rau kev teeb tsa cov kav dej siab siab zoo ib yam li cov kev teeb tsa ntawm cov kav dej nruab nrab thiab qis qis, tab sis cov kev xav tau siab dua thiab cov kev cai nruj dua. Yog li ntawd, ntxiv rau ua kom tau raws li qhov yuav tsum tau ua ntawm cov kav dej nruab nrab thiab qis qis, cov kev cai hauv qab no yuav tsum ua raws.
Cov khoom siv hluav taws xob siab, cov yeeb nkab fittings, fasteners thiab li qub siv rau kev teeb tsa yuav tsum dhau qhov kev tshuaj xyuas thiab txuas nrog cov ntaub ntawv txhawb nqa kev sib raug zoo. Tom qab lawv thauj mus rau qhov chaw, lawv yuav tsum tau khaws cia kom zoo, cim thiab muab tso rau kom zoo. Ua ntej kev teeb tsa, sab hauv thiab sab nrauv yuav tsum tau muab ntxuav kom huv, thiab cov channel sab hauv yuav tsum tau kuaj xyuas cov khoom txawv teb chaws thiab smoothness. Xyuas seb qhov roughness ntawm nozzle sealing nto thiab gasket ua tau raws li qhov yuav tsum tau ua. Yuav tsum tsis muaj khawb (tshwj xeeb tshaj yog radial khawb), me ntsis thiab lwm yam tsis xws luag cuam tshuam rau kev ua tau zoo ntawm sealing nto. Tsuas yog cov kav dej uas yuav tsum tau degreasing, lub nozzle sealing nto thiab gasket yuav tsum tau coated nrog roj cav lossis butter lossis vaseline dawb rau kev tiv thaiv. Cov threaded ib feem ntawm cov yeeb nkab kawg ntawm cov yeeb nkab uas tsim nyog yuav tsum tau coated nrog molybdenum disulfide roj los yog graphite cav roj rau kev tiv thaiv, tshwj tsis yog rau cov kav dej uas degreased raws li tau teev tseg.
Thaum lub sij hawm installation, cov yeeb nkab khib yuav tsum tau siv rau fixation, thiab cov casing tiv thaiv yuav tsum tau muab ntsia rau ntawm cov yeeb nkab khib nyob rau hauv kev sib cuag nrog high-pressure kav thiab fittings raws li tsim nyog. Thaum txhim kho lub siab-siab flange, lub chamfer ntawm cov yeeb nkab kawg xov yuav tsum raug nthuav tawm. Thaum txhim kho lub sealing gasket, tsis txhob dai nws nrog hlau hlau. Roj yuav tsum tau muab tso rau hauv cov yeeb nkab orifice thiab gasket ua ntej, thiab cov hlau mos siab-siab gasket yuav tsum raug muab tso rau hauv lub rooj sib khi. Lub flange bolts yuav tsum nruj symmetrically thiab sib npaug yam tsis muaj ntau dhau. Tom qab cov bolts tau nruj, ob lub flanges yuav tsum ua tib yam thiab concentric. Cov xov tawm sab nraud ntawm cov txiv ntseej yuav tsum yog 2 ~ 3 threads, yam tsawg kawg 2 threads, thiab qhov ntev ntawm txhua lub bolts yuav tsum yog tib yam. Thaum lub sij hawm kev teeb tsa, nws tsis raug tso cai los them nyiaj rau kev tsim khoom lossis kev teeb tsa tsis raug los ntawm kev muaj zog rub, thawb, sib tw lossis hloov kho lub thickness ntawm sealing gasket. Yog tias qhov kev teeb tsa lub raj xa dej tsis tuaj yeem ua tiav thiab ua tiav tas li, qhov qhib cov kav dej yuav tsum raug kaw rau lub sijhawm. Qhov chaw ntawm qhov ntsuas ntsuas qhov ntsuas ntawm lub raj xa dej yuav tsum tau teeb tsa tib lub sijhawm raws li cov kav dej.
Kev kub siab boiler raj yog ib hom boiler raj, uas belongs rau qeb ntawm seamless steel raj. Txoj kev tsim khoom yog tib yam li cov yeeb nkab seamless, tab sis muaj cov kev cai nruj rau cov qib steel siv hauv kev tsim cov yeeb nkab steel. Kev kub siab boiler raj feem ntau yog nyob rau hauv qhov kub thiab txias txias. Cov hlab yuav oxidized thiab corroded nyob rau hauv qhov kev txiav txim ntawm kub flue roj thiab chav. Cov yeeb nkab steel yuav tsum muaj lub zog ntev, siab tiv thaiv oxidation thiab corrosion kev ua tau zoo thiab kev ruaj ntseg zoo. Kev kub siab boiler raj feem ntau yog siv los tsim cov raj superheater, reheater raj, cua ducts, lub ntsiab chav boilers, thiab lwm yam ntawm high-pressure thiab ultra-high-pressure boilers.
Kev kub siab boiler raj yog ib hom boiler raj, uas belongs rau qeb ntawm seamless steel raj. Txoj kev tsim khoom yog tib yam li seamless high-pressure boiler raj, tab sis muaj cov kev cai nruj rau cov qib steel siv hauv kev tsim cov raj steel. Kev kub siab boiler raj feem ntau yog nyob rau hauv qhov kub thiab txias txias. Kev kub siab boiler raj feem ntau yog siv los tsim cov raj superheater, reheater raj, cua ducts, lub ntsiab chav boilers, thiab lwm yam ntawm high-pressure thiab ultra-high-pressure boilers.
Vim yog kev ua haujlwm ntev nyob rau hauv qhov kub thiab txias, cov khoom ntawm boiler raj yuav nkag mus, txo cov plasticity thiab toughness, hloov cov qauv qub thiab tsim corrosion. Cov yeeb nkab steel rau boiler yuav tsum muaj: (1) lub zog ntev 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, natural gas corrosion nyob rau hauv siab kub, chav thiab kev nyuaj siab corrosion kuj; (5) Kev ruaj ntseg zoo thiab cov txheej txheem zoo. Cov hlau hom ntawm high-pressure boiler raj muaj xws li carbon steel, pearlite, ferrite thiab austenite stainless hlau thaum tshav kub kub-resistant hlau. Txhawm rau txhim kho cov thermal efficiency ntawm thermal hwj chim units thiab txo cov roj noj, lub teb chaws thoob plaws lub ntiaj teb no tsom mus rau kev loj hlob muaj peev xwm thiab siab parameter (siab kub thiab siab siab) thermal hwj chim units (tshaj 1000MW). Lub chav siab nce mus rau 31.5 ~ 34.3mpa, lub superheated chav kub nce mus txog 595 ~ 650 ℃, thiab txhim kho rau ultra-siab siab tseem ceeb siab, uas tso rau pem hauv ntej cov kev xav tau ntau dua rau kev kub siab boiler raj. Yog li ntawd, cov qib steel tshiab tau tsim los ua kom tau raws li qhov xav tau ntawm cov khoom siv hluav taws xob siab siab.
