Qhov cuam tshuam ntawm Decarburized Txheej ntawm Rail Surface Fatigue Performance
Rail decarburization txheej yog dab tsi thiab nws tsim li cas?
Txoj kev tsheb ciav hlau decarburization txheej yog txheej txheej txheej nrog cov pa roj carbon qis tsim thaum lub sij hawm siab -kub dov. Nws yog tshwm sim los ntawm carbon atoms reacting nrog oxygen thiab poob los ntawm steel nto. Nws yog kev hloov pauv microstructure es tsis yog kev puas tsuaj rau sab nraud. Ib txheej nyias nyias ntawm decarburization yog qhov qub, tab sis ntau dhau los ua qhov tsis xws luag. Nws txo qhov tawv tawv thiab ncaj qha cuam tshuam rau hnav thiab qaug zog tiv thaiv.
Dab tsi txaus ntshai ua rau txheej txheej decarburization ntau dhau?
Ib txheej decarburization ntau dhau muaj qhov nyuaj thiab deforms yooj yim hauv lub tsheb ciav hlau thauj khoom. Nws txo qhov qaug zog lub neej thiab ua rau txoj kab tsheb ciav hlau ua rau micro- tawg. Cov kab nrib pleb tuaj yeem tsim mus rau hauv scabbing, shelling lossis txawm spalling. Nws kuj tsis muaj zog vuam zoo thiab sib koom ua ke stability. Nws shortens lub neej kev pab cuam thiab nce nqi kho thiab hloov.
Dab tsi yog qhov txawv ntawm Suav thiab thoob ntiaj teb cov qauv ntawm decarburization?
Suav cov qauv teeb tsa cov kev txwv tsis pub muaj kev sib tw zoo tib yam rau kev dav - cov kab ceev. Cov qauv thoob ntiaj teb xws li UIC, EN thiab AREMA muaj kev txwv nruj dua rau kev siab - nrawm thiab hnyav- tsheb ciav hlau. International rails feem ntau tau txais kev tswj qhov kub thiab txias kom txo qis decarburization. Export rails yuav tsum ua tau raws li qhov nruj dua ib qho ntawm cov qauv tsim nyog. Kev tswj decarburization qhia txog qib kev tsim khoom ntawm cov hlau rail.
Yuav ua li cas txiav txim tau ntau dhau decarburization ntawm qhov chaw?
Hauv - cov neeg ua haujlwm hauv qhov chaw tsis tuaj yeem ntsuas qhov tuab ncaj qha tab sis tuaj yeem soj ntsuam qhov txawv txav ntawm qhov chaw. Kev hnav thaum ntxov, cov hlua tsis sib xws lossis cov yas deformation sai yuav qhia tau tias muaj teeb meem. Lub neej ua haujlwm luv luv hauv ib ntu kuj ua rau muaj kev ceeb toom. Qhov tseeb tshaj plaws yog metallographic sampling thiab kuaj. Kev soj ntsuam kev sib tsoo tsis tu ncua kuj pab txheeb xyuas qhov muaj peev xwm ntawm qhov chaw.
Dab tsi yog qhov txawv ntawm decarburization, nplai thiab xeb?
Decarburization yog ib qho teeb meem sab hauv nrog cov ntsiab lus carbon tsawg, pom tsis pom qhov muag liab qab. Scale yog nto oxide tsim ntawm qhov kub thiab txias, feem ntau raug tshem tawm ua ntej kev teeb tsa. Rust yog tom qab corrosion khoom, tsis cuam tshuam rau cov qauv sab hauv. Decarburization ua rau lub zog thiab qaug zog; nplai thiab xeb feem ntau cuam tshuam rau cov tsos. Lawv muaj ntau qhov laj thawj, txoj haujlwm thiab kev phom sij thiab yuav tsum tsis txhob tsis meej pem.