Railhead thiab Tread Kho thiab Log -} bail sib cuag optimization rau lub teb chaws txheem ntsia
- Yuav kho tus 2.5mm hnav GB 60kg / m tsheb nqaj hlau (18mm² chwv thaj) ntawm profile sib tsoo, thiab dab tsi yog tus ncej?
Hnav ua rau 400MPA kev ntxhov siab, 0.8mm / xyoo rail hnav. Kho: ① 80-grit profile grinder (LM nkhaus), 50mm txhua sab; ② Kev sib tsoo 3-kauj ruam (0.8-0.9mm / theem, tsawg dua los yog sib npaug rau 150 degree); ③ tsawg dua lossis sib npaug ± 0.1mm profile sib txawv. Cov Qauv: Tsawg dua lossis sib npaug rau 0.3mm hnav, 26-28mm² thaj, 320mpa kev ntxhov siab, ra tsawg dua lossis sib npaug rau 3.2μm. Qhov tshwm sim: 0.3mm / xyoo hnav, 0.2 hli / 10kkm Flange hnav, haum 25t dog dig dog dig.
- Yuav ua li cas txhim kho HB280 Hardness ntawm GB 75kg / m tsheb nqaj hlau (30t thauj khoom) ntawm cov khoom tawv nqaij tawv, thiab hnav zoo li cas?
Tsawg hardness ua rau 1.2mm hnav / 6 lub hlis. Hardening: ① Induction Quenching (920 Degree × 10s, 3 - 5 hli martensite txheej); ② 200℃× 30min tempering; ③ tsawg dua lossis sib luag rau HB20 hardness sib txawv. Yuav tsum muaj: HB320-350, 50% zoo dua hnav (tsawg dua lossis sib npaug nrog 0.4mm / xyoo), ntau dua los yog sib luag rau 200MPA Bonding zog. Qhov tshwm sim: 12-hli txij nkawm (6-hli ua ntej), haum 30t hnyav-haul rail.
- Dab tsi yog lub log - rail garts chwv, thiab yuav ua li cas kho rail cov hau, thiab yuav ua li cas los kho cov kab sib tw, thiab yuav ua li cas los kho cov kab sib tw, thiab yuav ua li cas los kho cov kab sib tw
Kuaj: ① 20kn load nyob LM log; {-} Cov ntawv rau thaj; ③ Siv lub ntsuas ntsuas rau kev ntxhov siab. Cov Qauv: 25 {- 30 hli patch, tsawg dua los yog sib npaug rau 330mpa kev ntxhov siab, tsawg dua lossis sib npaug rau 1mm offset. Tuav: ① Ntxiv 0.3mm sib tsoo rau 10mm chaw; ② tsawg dua lossis sib npaug rau ± 0.05mm profile sib txawv; Rest-Kev kuaj xyuas kom muaj cov khoom lag luam uas tsim nyog.
- Dab tsi yog cov sib tsoo precision / hardness txawv rau GB Rail hauv dog dig / neeg caij tsheb / hnyav {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{} haul scenarios, thiab ua li cas nrog mismatch?
Qhov sib txawv: ① (120km / h, 25T): ± 0.15mm, hb300- 320; ② Cov Neeg Nrog Caij (200km / h, 25T): ± 0.1mm, HB310 - 330; ③ Hnyav-Haul (80km / h, 30T): ± 0.08mm, HB320-350. Mismatch: hnyav-hau nrog tus qauv zoo tib yam: 1.5mm hnav / 3 lub hlis, 380MPA kev ntxhov siab, 800K RMB / 100kM tus nqi.
- Dab tsi yog re {{{{0} Kev tshuaj ntsuam mus ncig / cov ntsiab lus rau kev kho GB ntsia, thiab yuav ua li cas los kho GB ntsia, thiab yuav ua li cas 0.8 hli hnav (tsawg dua los yog sib npaug rau 0.3mm) hauv ntu?
Cycles: ① dog dig: 3 hlis; ② Cov Neeg Nrog: 2 Hlis; ③ Hnyav - log: 1 hlis. Cov ntsiab lus: ① hnav qhov tob (± 0.01 hli); ② thaj chaw thaj chaw; ③ Lub Hardness (ib 500m); Profile Kev sib txawv (ib 1km). Thaum muaj xwm ceev: ① sib tsoo ib ntus hauv 72h (tsawg dua los yog sib npaug nrog 0.3mm); ② Kev Log Rov -} profiling yog xav tau; ③ Rov qab- Saib txhua 15 hnub.