Hauj lwm lawm
Kev tsis
Rail Dog Spike Fastening System
CovRailway Dog Spikeyog ib qho -daim forged steel fastener nrog L- lub taub hau zoo li lub taub hau thiab square tapered shank, tsim los kom ruaj ntseg thiab khi daim hlau rau cov ntoo pw tsaug zog los ntawm kev hloov chaw es tsis yog xov kev sib koom tes. Tsim los ntawm nruab nrab- carbon steels suav nrog 45 # thiab 55 # nrog cov ntsiab lus carbon ntawm 0.42-0.60%, cov spikes no ua tiav lub zog tensile ntawm 550-700 MPa los ntawm kub forging thiab tswj cov txheej txheem txias.
Technical Specifications:
| Hom kev ua tsis tiav | Qhov Tseem Ceeb | Yam ntxwv nta | Txoj kev tiv thaiv | Kev Tshawb Fawb |
|---|---|---|---|---|
| Fatigue Fracture | Cyclic loading ntawm lub taub hau -shank fillet | Puam marks, striations ntawm tawg nto | Txhaj peening fillet radius; 3-5mm radius tsim | Magnetic particle soj ntsuam; kev kuaj ultrasonic |
| Overload Failure | Kev cuam tshuam loj heev (derailment) | Ductile dimpling, microvoid coalescence | Tsim nyog spike length xaiv | Kev tshuaj xyuas qhov muag; load keeb kwm tsom xam |
| Hydrogen embrittlement | Kev tu cov kua qaub tsis raug / plating | Intergranular "pob zeb khoom qab zib" tawg | Ci ntawm 200℃rau 4-24 teev tom qab plating | ncua kev kuaj pob txha; hydrogen tsom xam |
| Corrosion qaug zog | Pitting nyob rau hauv ntug dej hiav txwv ib puag ncig | Ntau qhov chaw pib tawg los ntawm qhov pits | Kub-dip galvanizing (50-80µm); zinc- nplua nuj txheej | Eddy tam sim no soj ntsuam; kev soj ntsuam corrosion |
| Ntoo Splitting | Oversized spike los yog undersized pilot qhov | Longitudinal tawg nyob rau hauv pw tsaug zog | Pilot qhov taub 85-90% ntawm shank kab pheeb ces kaum | Kev soj ntsuam pom thaum lub sijhawm teeb tsa |
Installation & Maintenance Perspective:
- Kub forging ntawm 1,050-1,150℃nyob rau hauv kev vam meej tuag nyob rau hauv 300-500 tuj presses xyuas kom meej lub taub hau geometry thiab square shank qhov ntev
- Kev tswj kom txias qeeb hauv cov thawv insulated txo cov kev ntxhov siab sab hauv thiab ua kom zoo ib yam 85–95 HRB hardness thoob plaws hauv cross-section
- Automated optical soj ntsuam tshuab ntsuas shank dav (± 0.4mm), lub taub hau qhov siab, thiab taw tes kaum (30-35 degree) ntawm 120+ spikes ib feeb
Kev Saib Xyuas & Kev Pom Kev Ua Haujlwm
- Wedge point displaces ntoo fibers ntau dua li txiav lawv, tsim compressed fiber ntau cheeb tsam uas exert nruam radial siab ntawm shank
- Square shank (14-16mm) tsim 30-40% kev sib txhuam ntau dua li puag ncig shanks vim yog kaum siab concentration ntawm plaub thaj chaw sib cuag
- Pilot qhov optimization: 80-85% ntawm qhov siab tshaj plaws rub- tawm qhov kev tawm tsam ua tiav thaum lub qhov taub sib npaug 85-90% ntawm shank kab pheeb ces kaum
Gnee Professional tsum
Cim npe nrov: rail dog spike rau lub teeb rail kho, Tuam Tshoj rail dog spike rau lub teeb rail fixing manufacturers, lwm tus neeg, Hoobkas
