1. Yuav ua li cas koj xam rail residual stress?
Lub qhov-drilling strain gauge method ntsuas:
σ_residual=E·(ε_0 + ε_45 + ε_90)/3
Qhov twg: E=Elastic modulus ε=Ntsuas hom ntawm 0 degree, 45 degree, 90 degree
Txais kev txwv yog<150MPa tensile or <200MPa compressive.
2. Dab tsi yog qhov yuav tsum tau ua rau txoj hlua txuas txuas?
Cov kev cai tshwj xeeb suav nrog:
Maj mam txhav kev hloov chaw
Kev nthuav dav pob qij txha nrog ± 50mm zog muaj peev xwm
Anti-crawl fasteners
Txoj kev daws teeb meem yuav tsum yog<5mm differential over 10m.
3. Yuav ua li cas tiv thaiv lub log los ntawm lub log hnyav?
Cov tswv yim tiv thaiv:
Lubrication txhua 200m nyob rau hauv lub braking aav
Log swb tiv thaiv kab ke
Thermite weld hardening ntawm qhov chaw nres
Cov koob yees duab infrared saib xyuas hotspots thaum ua haujlwm.
4. Txoj kev tsheb ciav hlau zoo tshaj plaws rau kev sib xyaw ua ke yog dab tsi?
Rau cov neeg caij tsheb sib koom / freight kab:
1:40 uaoptimizes neeg nrog caij
1:20 uazoo dua suits hnyav freight
Kev sib haum xeeb ntawm1:30yog ib txwm muaj, nrog rau kev txwv ceev rau cov tsheb thauj khoom thauj ntawm siab -kov tsis tau.
5. Yuav ua li cas rails sib dhos tom qab tamping?
Ncej -tamping alignment siv:
Laser -cov txheej txheem hauv ob sab phlu
Inertial ntsuas units
Ballast txhaj tshuaj stabilization
Qhov kawg kam rau ua yog 2 hli sib txawv tshaj 10m chord ntev.