Kub siab resistant boiler raj chaw tsim tshuaj paus qhov chaw
Nruab nrab thiab tsis tshua muaj siab boiler raj yog cov zoo carbon steel qauv kub-kuav los tiag thiab txias drawn (dov) seamless hlab siv los tsim superheated chav raj, dov hlab rau qis thiab nruab nrab siab boilers ntawm ntau yam qauv, superheated chav tubes, cov pa luam yeeb loj. , me me pa luam yeeb raj thiab arch cib raj rau locomotive boilers. Nws yog tsuas yog siv rau pipelines conveying qis thiab nruab nrab siab kua nyob rau hauv industrial boilers thiab domestic boilers. Cov ntaub ntawv sawv cev yog 10 thiab 20 steel.
Boiler raj yog ib hom seamless 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. Raws li qhov kev pabcuam kub, nws tau muab faib ua cov raj boiler dav dav thiab siab-siab boiler raj.
Cov cuab yeej cuab tam ntawm boiler raj yog qhov ntsuas tseem ceeb los xyuas kom meej qhov kev pabcuam zaum kawg (cov cuab yeej cuab tam) ntawm cov hlau, uas nyob ntawm cov tshuaj muaj pes tsawg leeg thiab kev kho cua sov ntawm cov hlau. Nyob rau hauv cov txheej txheem steel yeeb nkab, raws li cov kev pabcuam sib txawv, cov khoom siv tensile (lub zog tensile, yield zog los yog yield point, elongation), hardness thiab toughness indexes, raws li zoo raws li lub siab thiab tsis kub khoom yuav tsum tau los ntawm cov neeg siv.
① Feem ntau, qhov kev pabcuam kub ntawm boiler raj yog qis dua 350 ℃, thiab cov raj hauv tsev feem ntau yog ua los ntawm No.
②Kev 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.
① General boiler hlab yog tsuas yog siv los tsim cov phab ntsa hauv dej, cov raj dej kub npau npau, cov raj cua sov, cov kav dej superheated rau locomotive boilers, cov pa luam yeeb loj thiab me thiab cov hlab cib.
②Kev 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. Cov khoom siv thiab kev xav tau ntawm kev lag luam siab siab boiler raj yog feem ntau ruaj khov, tab sis cov khoom siv thiab kev xav tau ntawm txhua qhov kev lag luam me yuav sib txawv ntxiv. Cov neeg sab hauv tau taw qhia tias qhov txuas tseem ceeb tshaj plaws yog kev siv thiab kev txhawb nqa lub zog tshiab-txuag thiab thermal rwb thaiv tsev 20g high-pressure boiler tube khoom.
Tshiab zog-txuag 20g high-pressure boiler raj khoom yog maj nce nyob rau hauv kev ua lag luam, xws li ntsuab ib puag ncig tiv thaiv coatings, lub zog-txuag thiab dej-txuag huv si khoom, ib puag ncig tiv thaiv pob zeb, ib puag ncig tiv thaiv sab nrauv cement npuas rwb thaiv tsev board, thiab lwm yam. Kev cia siab ntawm kev txuag hluav taws xob thiab kev tiv thaiv ib puag ncig cov khoom lag luam hauv kev lag luam dav ntawm 20g kev lag luam siab boiler raj yog cog lus[1]
(1)GB / t5310-2008 seamless steel raj rau kev kub siab boilers. Txoj kev kuaj tshuaj muaj pes tsawg leeg yuav tsum ua raws li cov khoom siv hauv gb222-84, cov txheej txheem rau kev tshuaj xyuas tshuaj ntawm hlau, hlau thiab hlau thiab gb223 txoj hauv kev rau tshuaj xyuas cov hlau, hlau thiab hlau.
(2) Cov tshuaj muaj pes tsawg leeg ntawm imported boiler steel kav yuav tsum tau soj ntsuam raws li cov qauv tsim nyog teev nyob rau hauv daim ntawv cog lus.
