Seamless hlau yeeb nkabe yog ib daim hlau ntev nrog ib qho hollow cross-section thiab tsis muaj seams nyob ib puag ncig. Vim yog qhov tshwj xeeb ntawm nws cov txheej txheem tsim khoom, nws muaj lub zog siab thiab zoo tiv taus siab. Cov kav dej hlau seamless uas tau qhia lub sijhawm no suav nrog ob yam khoom siv thiab cov lus qhia: 15CrMoG qib, qhov kev qhia tshwj xeeb 325 × 14 thiab12Cr1MoVGqib, qhov tshwj xeeb 325 × 10.

Cov yam ntxwv thiab kev siv ntawm15CrMoGyeeb nkab hlau
15CrMoG yog cov hlau chromium-molybdenum alloy, cov khoom siv tshuaj lom neeg tseem ceeb suav nrog carbon (C), chromium (Cr), molybdenum (Mo), thiab lwm yam. Cov khoom siv no muaj lub zog siab, tiv taus oxidation zoo thiab tiv taus kub siab, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias siab. Tsis tas li ntawd, 15CrMoG kuj muaj kev ua haujlwm vuam zoo thiab ua haujlwm tau zoo.

Siv
Cov kav hlau tsis muaj qhov sib txuas ua los ntawm 15CrMoG feem ntau yog siv rau cov kav dej kub thiab siab thiab cov khoom siv, thiab siv dav hauv cov teb hauv qab no:

Kev lag luam fais fab: boiler superheaters, reheaters, headers thiab cov kav dej loj hauv cov chaw tsim hluav taws xob thermal.
Kev lag luam tshuaj lom neeg: cov kav dej rau cov reactors kub siab hauv cov khoom siv tshuaj lom neeg.
Kev lag luam roj av: cov kav dej kub thiab cov cua sov sib hloov hauv cov chaw ua roj.
Cov yeeb nkab hlau no tuaj yeem tswj tau cov khoom siv kho tshuab zoo heev ntawm qhov kub siab, thiab tshwj xeeb tshaj yog rau kev ua haujlwm ntev ntawm 500 ° C thiab 580 ° C.
Cov yam ntxwv thiab kev siv ntawm 12Cr1MoVG steel kav dej
12Cr1MoVG yog cov hlau chromium-molybdenum-vanadium alloy zoo uas muaj lub zog siab, tiv taus kev nkag mus zoo, thiab muaj zog tiv taus corrosion thiab oxidation. Piv nrog 15CrMoG, nws ntxiv me ntsis vanadium (V), uas ua rau nws tiv taus kub thiab ruaj khov dua.
Siv
Cov kav hlau tsis muaj qhov sib txuas ua los ntawm 12Cr1MoVG feem ntau siv rau hauv qhov kub thiab txias thiab qhov siab, thiab lawv cov ntawv thov suav nrog:
Lub zog hluav taws xob: cov tshuab ua kom sov kub, cov tshuab ua kom sov dua thiab cov kav dej hauv cov chaw tsim hluav taws xob thermal thiab cov chaw tsim hluav taws xob nuclear.
Kev lag luam petrochemical: cov khoom siv tshuaj lom neeg kub thiab siab thiab cov kav dej.
Kev tsim cov boiler: tsim cov raj boiler siab rau cov khoom siv uas muaj kev ua haujlwm siab dua.
Cov yeeb nkab hlau no yog tsim rau kev siv mus sij hawm ntev ntawm qhov kub ua haujlwm tshaj 570 ° C thiab muaj kev tiv taus nkag thiab ductility muaj zog heev.
Cov yeeb nkab hlau 15CrMoG uas muaj qhov loj me ntawm 325 × 14 thiab cov yeeb nkab hlau 12Cr1MoVG uas muaj qhov loj me ntawm 325 × 10 muaj lawv lub hom phiaj. Ob qho tib si yog cov yeeb nkab hlau tsis muaj qhov sib txuas thiab siv dav hauv kev lag luam kub thiab siab xws li lub zog, petrochemicals, thiab tshuaj lom neeg. Nyob ntawm qhov chaw siv, cov neeg siv tuaj yeem xaiv cov khoom siv yeeb nkab hlau uas tsim nyog dua los ua kom tau raws li qhov xav tau ntawm kev tsim khoom.