1. Dab tsi yog qhov ceev tshaj plaws UIC 54 kev tsheb nqaj hlau tuaj yeem txhawb nqa kev nyab xeeb?
UIC 54 rails tuaj yeem pab txhawb kev ceev txog 120 km / h, zoo tagnrho rau cov neeg caij tsheb hauv cheeb tsam lossis qis - cov kab xa khoom ceev. Kev nrawm dua (tshaj 120km / h) ua kom muaj kev vibration, ua rau kom hnav sai dua thiab qaug zog. Lawv qhov hnyav 54kg / m tsis muaj qhov rigidity xav tau rau kev kub ceev, tsis zoo li UIC 60 (250km / h +). Rau cov kab xav tau 120km / h +, UIC 54 yog tus nqi - zoo; cov kab nrawm dua yuav tsum tau hnyav dua. Qhov kev txwv ceev no phim UIC 54 tus qauv tsim rau nruab nrab - siv tsheb.
2. Rail steel purity cuam tshuam li cas rau kev qaug zog tiv thaiv rau siab - nrawm nrawm?
Higher rail steel purity (low sulfur, phosphorus, and inclusions) boosts fatigue resistance for high-speed rails like CRTS 300N. Impurities create weak points where fatigue cracks start-pure steel (sulfur ≤0.01%) has fewer such points. High-speed rails face frequent vibration; pure steel handles 10^7+ load cycles without cracking. Low-purity steel (sulfur >0.03%) ua tsis tiav ua ntej, xav tau kev hloov ntau zaus. Purity yog qhov tseem ceeb rau kev siab - kev tsheb ciav hlau ceev kom dhau 30+ xyoo.
3. Dab tsi yog lub luag haujlwm ntawm txoj kev tsheb ciav hlau dav hauv kev tiv thaiv kev pw tsaug zog?
Dav dav rail bases (piv txwv li, UIC 60: 150mm) kis cov tsheb ciav hlau qhov hnyav tshaj qhov chaw pw tsaug zog ntau dua. Qhov no txo qhov siab ntawm cov neeg pw tsaug zog-cov hauv paus nqaim (120mm) mloog zoo siab, tawg pob zeb lossis crushing ntoo. Lub hauv paus dav kom cov tsheb ciav hlau nyob nruab nrab ntawm cov neeg pw tsaug zog, tiv thaiv kev hloov mus rau sab nraud. Rau cov pob zeb pw, 150mm bases phim cov qauv slots, ua kom ruaj khov. Lub hauv paus dav tiv thaiv cov neeg pw tsaug zog thiab tswj kev sib tw khiav.
4. Ntev npaum li cas yuav tsum tau kuaj cov kab sib txuas ntawm AREMA 115RE?
AREMA 115RE rail joint bars (fishplates) yuav tsum tau tshuaj xyuas txhua 3-6 lub hlis, nyob ntawm kev khiav tsheb. High- kab tsheb khiav (30+ tsheb ciav hlau/hnub) xav tau 3-hli kuaj xyuas; qis- cov kab tsheb tuaj yeem tos 6 lub hlis. Kev soj ntsuam xyuas kom xeb, tawg, thiab xoob bolts-xeb tsis muaj zog tuav, tawg ua rau tsis ua haujlwm. Cov kab puas raug hloov tam sim ntawd kom tsis txhob hloov tsheb ciav hlau. Kev kuaj xyuas tsis tu ncua ua kom cov kab sib koom ua haujlwm ua haujlwm thiab tiv thaiv cov teeb meem taug qab.
5. Dab tsi yog qhov txawv ntawm txoj kev sib tsoo rau hnav vs. corrugation?
Sib tsoo rau hnav tshem tawm 0.2-0.5mm ntawm cov khoom siv tsis sib xws ntawm lub taub hau kom rov qab tau qhov qub profile. Nws tau ua tiav thaum hnav tshaj 3 hli, feem ntau nyob rau hauv siab - cov tsheb thauj mus los. Sib tsoo rau lub hom phiaj corrugation yoj-zoo li ridges (10–100mm wavelength), siv cov tshuaj txhuam kom du kom du. Nws xav tau kev hla ntau dua li kev sib tsoo, feem ntau ua txhua 6-12 lub hlis. Hnav sib tsoo kho cov khoom poob; corrugation sib tsoo fixes nto irregularities.